CISL OpenSky Publications
Select a year and/or affiliation to see the peer-reviewed publications involving authors from CISL. The publications span data assimilation, machine learning, visualization, data analysis, model development, research computing operations, and data management services. You can view the full publications and search for specific publications in OpenSky, the open access repository of scholarly works developed and managed by the NSF NCAR Library.
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NAIRR pilot statistics and opportunities Hart, D. L.. (2025). NAIRR pilot statistics and opportunities. The NAIRR was established to provide researchers and educators with access to computing resources, data, educational tools, and other assets needed for AI research and development. It aims to democratize access to these resources, particula... CISL Affiliations: CISLAODEPT Publication Genre: Conference Material View on OpenSky |
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Chapter 5: Why Has Walker’s Climate Research Stood the Test of Time? Katz, R.. (2025). Chapter 5: Why Has Walker’s Climate Research Stood the Test of Time?. , doi:https://doi.org/10.1142/9789811294808_0005 This chapter considers why Sir Gilbert Walker’s climate research has stood the test of time. Reasons include being skeptical about popular approaches such as “period-hunting” and instead relying on more statistically rigorous methods ... CISL Affiliations: CISLAODEPT Publication Genre: Chapter View on OpenSky |
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A Statistical Investigation of the CESM Ensemble Consistency Testing Framework - Part II Molinari, S., Milroy, D., Hammerling, D.. (2024). A Statistical Investigation of the CESM Ensemble Consistency Testing Framework - Part II. , doi:http://doi.org/10.5065/y541-x174 Weather is the archetype for chaotic dynamical system. As such, improvements, updates, and modifications to large scale climate simulation demand there be quality checks in place to ensure that new climate simulations are consistent in thei... CISL Affiliations: CISLVISITORS Publication Genre: Technical Report View on OpenSky |
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Snapp-Childs, W. G., Hart, D. L., Costa, C. M., Wernert, J. A., Jankowski, H. E., et al. (2024). Evaluating return on investment for cyberinfrastructure using the International Integrated Reporting This paper investigates the return on investment (ROI) in cyberinfrastructure (CI) facilities and services by comparing the value of end products created to the cost of operations. We assessed the cost of a US CI facility called XSEDE and t... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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From vision to evaluation: A metrics framework for the ACCESS allocations service Hart, D. L., Deems, S. L., Herriott, L. T.. (2024). From vision to evaluation: A metrics framework for the ACCESS allocations service. SN Computer Science, doi:https://doi.org/10.1007/s42979-024-02787-4 The Allocations Service for the Advanced Cyberinfrastructure Coordination Ecosystem: Services & Support (ACCESS) program is charged with accepting, reviewing, and processing researchers' requests to use resources that are integrated into th... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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Empowering earth system science research: Federated data and compute for Earth system predictability Hauser, T.. (2023). Empowering earth system science research: Federated data and compute for Earth system predictability. CISL Affiliations: CISLAODEPT Publication Genre: Conference Material View on OpenSky |
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From vision to evaluation: A metrics framework for the ACCESS allocations service Hart, D. L., Deems, S., Herriott, L.. (2023). From vision to evaluation: A metrics framework for the ACCESS allocations service. CISL Affiliations: CISLAODEPT Publication Genre: Conference Material View on OpenSky |
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Klema, M., Venayagamoorthy, S. K., Pouquet, A., Rosenberg, D., Marino, R.. (2023). Effect of rotation on mixing efficiency in homogeneous stratified turbulence using unforced direct numerical simulations. Environmental Fluid Mechanics, doi:https://doi.org/10.1007/s10652-022-09869-y CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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Pouquet, A., Rosenberg, D., Marino, R., Mininni, P.. (2023). Intermittency scaling for mixing and dissipation in Rotating Stratified Turbulence at the edge of instability. Atmosphere, doi:https://doi.org/10.3390/atmos14091375 Many issues pioneered by Jackson Herring deal with how nonlinear interactions shape atmospheric dynamics. In this context, we analyze new direct numerical simulations of rotating stratified flows with a large-scale forcing, which is either ... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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The Inclusive Conferences Survey: Analysis and validation of inclusivity at HPC conferences Lauer, A., Galbraith, M. C., Wolff, M., Hart, D. L.. (2023). The Inclusive Conferences Survey: Analysis and validation of inclusivity at HPC conferences. PEARC '23: Practice and Experience in Advanced Research Computing, doi:https://doi.org/10.1145/3569951.3597580 As conferences and events take steps to welcome a broader range of people, it is important to accurately assess these efforts. We present and validate the Inclusive Conferences Survey, a tool to measure perceptions of a welcoming atmosphere... CISL Affiliations: CISLAODEPT Publication Genre: Chapter View on OpenSky |
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McGovern, A., Gagne, D. J., Wirz, C. D., Ebert-Uphoff, I., Bostrom, A., et al. (2023). Trustworthy Artificial Intelligence for environmental sciences: An innovative approach for summer school. Bulletin of the American Meteorological Society, doi:https://doi.org/10.1175/BAMS-D-22-0225.1 Many of our generation's most pressing environmental science problems are wicked problems, which means they cannot be cleanly isolated and solved with a single "correct" answer. (AI2ES) seeks to address such problems by developing synergist... CISL Affiliations: TDD, MILES, CISLAODEPT Publication Genre: Article View on OpenSky |
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Zheng, Z., Fiore, A. M., Westervelt, D. M., Milly, G. P., Goldsmith, J., et al. (2023). Automated machine learning to evaluate the information content of tropospheric trace gas columns for fine particle estimates over India: A modeling testbed. Journal of Advances in Modeling Earth Systems, doi:https://doi.org/10.1029/2022MS003099 India is largely devoid of high-quality and reliable on-the-ground measurements of fine particulate matter (PM2.5). Ground-level PM2.5 concentrations are estimated from publicly available satellite Aerosol Optical Depth (AOD) products combi... Publication Genre: Article View on OpenSky |
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Stewart, C. A., Costa, C. M., Wernert, J. A., Snapp-Childs, W., Bland, M., et al. (2023). Use of accounting concepts to study research: Return on investment in XSEDE, a US cyberinfrastructure service. Scientometrics, doi:https://doi.org/10.1007/s11192-022-04539-8 This paper uses accounting concepts-particularly the concept of Return on Investment (ROI)-to reveal the quantitative value of scientific research pertaining to a major US cyberinfrastructure project (XSEDE-the eXtreme Science and Engineeri... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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Extending ensemble Kalman filter algorithms to assimilate observations with an unknown time offset Gorokhovsky, E., Anderson, J. L.. (2023). Extending ensemble Kalman filter algorithms to assimilate observations with an unknown time offset. Nonlinear Processes in Geophysics, doi:https://doi.org/10.5194/npg-30-37-2023 Data assimilation (DA), the statistical combination ofcomputer models with measurements, is applied in a variety of scientificfields involving forecasting of dynamical systems, most prominently inatmospheric and ocean sciences. The existenc... CISL Affiliations: TDD, DARES Publication Genre: Article View on OpenSky |
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Raeder, K. D., Gharamti, M. E., Johnson, B. K., Kershaw, H., Huo, X., et al. (2023). The latest from the data assimilation research testbed: Powerful new assimilation algorithms, advances in efficiency and capabilities, new model and observation interfaces, and novel results. CISL Affiliations: TDD, DARES Publication Genre: Conference Material View on OpenSky |
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A CESM+DART atmospheric reanalysis for forcing ocean, land, and other surface models Raeder, K. D., Anderson, J. L., Gharamti, M. E., Kershaw, H., Raczka, B., et al. (2023). A CESM+DART atmospheric reanalysis for forcing ocean, land, and other surface models. CISL Affiliations: TDD, DARES, CISLVISITORS Publication Genre: Conference Material View on OpenSky |
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Dashti, H., Smith, W. K., Huo, X., Fox, A. M., Javadian, M., et al. (2023). Underestimation of the impact of land cover change on the biophysical environment of the Arctic and boreal region of North America. Environmental Research Letters, doi:https://doi.org/10.1088/1748-9326/ac8da7 The Arctic and Boreal Region (ABR) is subject to extensive land cover change (LCC) due to elements such as wildfire, permafrost thaw, and shrubification. The natural and anthropogenic ecosystem transitions (i.e. LCC) alter key ecosystem cha... CISL Affiliations: CISLVISITORS Publication Genre: Article View on OpenSky |
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Raeder, K. D., Anderson, J. L., Gharamti, M. E., Kershaw, H., Raczka, B., et al. (2022). The latest from the Data Assimilation Research Testbed: New algorithms for non-gaussian distributions and sampling errors; new memory management for larger models and faster execution; new model and o. CISL Affiliations: TDD, DARES Publication Genre: Conference Material View on OpenSky |
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Eroglu, O., Zacharias, A., Sizemore, M., Kootz, A., Craker, H. R., et al. (2022). The Geoscience Community Analysis Toolkit: An open development, community driven toolkit in the scientific Python ecosystem. Proceedings of the 21st Python in Science Conference (SciPy 2022), doi:https://doi.org/10.25080/majora-212e5952-01c The Geoscience Community Analysis Toolkit (GeoCAT) team develops and maintains data analysis and visualization tools on structured and unstructured grids for the geosciences community in the Scientific Python Ecosystem (SPE). In response to... CISL Affiliations: TDD, VAST Publication Genre: Article View on OpenSky |
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Hart, D. L., Wernert, J., Chalker, A., Smallen, S., Samuel, T., et al. (2022). Measuring XSEDE: Usage Metrics for the XSEDE Federation of Resources: A comparison of evolving resource usage patterns across TeraGrid and XSEDE. PEARC '22: Practice and Experience in Advanced Research Computing, doi:https://doi.org/10.1145/3491418.3530765 The Extreme Science and Engineering Discovery Environment (XSEDE) program and its predecessor, the TeraGrid, have provided a range of advanced computing resources to the U.S. research community for nearly two decades. The continuously colle... CISL Affiliations: CISLAODEPT Publication Genre: Chapter View on OpenSky |
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An informal introduction to numerical weather models with low-cost hardware Foust, W. E.. (2022). An informal introduction to numerical weather models with low-cost hardware. Bulletin of the American Meteorological Society, doi:https://doi.org/10.1175/BAMS-D-20-0146.1 Weather, climate, and other Earth system models are growing in complexity as computing resources and technologies continue to evolve with time. Thus, models are and will remain a vital tool for scientific research. Exposure and education on... CISL Affiliations: CODE Publication Genre: Article View on OpenSky |
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A new CAM6 + DART reanalysis with surface forcing from CAM6 to other CESM models Raeder, K. D., Hoar, T. J., Gharamti, M. E., Johnson, B. K., Collins, N. S., et al. (2021). A new CAM6 + DART reanalysis with surface forcing from CAM6 to other CESM models. Scientific Reports, doi:https://doi.org/10.1038/s41598-021-92927-0 An ensemble Kalman filter reanalysis has been archived in the Research Data Archive at the National Center for Atmospheric Research. It used a CAM6 configuration of the Community Earth System Model (CESM), several million observations per d... CISL Affiliations: TDD, DARES, HPCD, HPCDSEC, CSG Publication Genre: Article View on OpenSky |
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Optimization of DNS code and visualization of entrainment and mixing phenomena at cloud edges Kumar, B., Rehme, M., Suresh, N., Cherukuru, N., Jaroszynski, S., et al. (2021). Optimization of DNS code and visualization of entrainment and mixing phenomena at cloud edges. Parallel Computing, doi:https://doi.org/10.1016/j.parco.2021.102811 Entrainment and mixing processes occur during the entire life of a cloud. These processes change the droplet size distribution, which determines rain formation and radiative properties. Since it is a microphysical process, it cannot be reso... CISL Affiliations: TDD, VAST Publication Genre: Article View on OpenSky |
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Proceedings of the 2021 Improving Scientific Software Conference Hu, W., Vento, D. D., Su, S., Acharya, N., Cervone, G., et al. (2021). Proceedings of the 2021 Improving Scientific Software Conference. , doi:https://doi.org/10.26024/p6mv-en77 The Software Engineering Assembly (SEA) is a loosely structured group of software engineers and scientists who write scientific software, mostly but not only at NCAR and mostly but not only in the field of atmospheric sciences. The mission ... CISL Affiliations: USS, CSG, CISLAODEPT Publication Genre: Technical Report View on OpenSky |
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The potential for geostationary remote sensing of NO2 to improve weather prediction Liu, X., Mizzi, A., Anderson, J. L., Fung, I., Cohen, R. C.. (2021). The potential for geostationary remote sensing of NO2 to improve weather prediction. Atmospheric Chemistry and Physics, doi:https://doi.org/10.5194/acp-21-9573-2021 Observations of winds in the planetary boundary layer remain sparse making it challenging to simulate and predict atmospheric conditions that are most important for describing and predicting urban air quality. Short-lived chemicals are obse... CISL Affiliations: CISLVISITORS, TDD, DARES Publication Genre: Article View on OpenSky |
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A scalable and efficient workflow for compressing high-resolution Earth system model data Xu, H., Loft, R. D., Paul, K., Banihirwe, A.. (2021). A scalable and efficient workflow for compressing high-resolution Earth system model data. CISL Affiliations: TDD, ASAP, CISLAODEPT, VAST Publication Genre: Conference Material View on OpenSky |
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Raeder, K. D., Anderson, J. L., Hoar, T. J., Gharamti, M. E., Johnson, B. K., et al. (2021). The CAM6+DART Ensemble Reanalysis provides a variety of datasets for machine learning training and verification algorithms. CISL Affiliations: TDD, DARES Publication Genre: Conference Material View on OpenSky |
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An overview of GPU enablement activities in STP and ASAP Dennis, J. M., Suresh, S. M., Brown, C., Dobbins, B., Baker, A., et al. (2021). An overview of GPU enablement activities in STP and ASAP. CISL Affiliations: TDD, ASAP Publication Genre: Conference Material View on OpenSky |
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Estimating parameters in a sea ice model using an ensemble Kalman filter Zhang, Y., Bitz, C. M., Anderson, J. L., Collins, N. S., Hoar, T. J., et al. (2021). Estimating parameters in a sea ice model using an ensemble Kalman filter. The Cryosphere, doi:https://doi.org/10.5194/tc-15-1277-2021 Uncertain or inaccurate parameters in sea ice models influence seasonal predictions and climate change projections in terms of both mean and trend. We explore the feasibility and benefits of applying an ensemble Kalman filter (EnKF) to esti... CISL Affiliations: TDD, DARES Publication Genre: Article View on OpenSky |
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Cherukuru, N., Manuel, R., Lauer, A., Scheitlin, T. W., Bhagchandani, B.. (2021). Using augmented reality (AR) to create immersive and accessible museums for people with vision-impairments. Augmented Reality (AR) technology has been predominantly used to develop applications that visually augment physical spaces. However, the enabling technologies of AR such as image detection and Simultaneous Localization and Mapping could be... CISL Affiliations: TDD, VAST, CISLAODEPT Publication Genre: Conference Material View on OpenSky |
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Rosenberg, D., Pouquet, A., Marino, R.. (2021). Correlation between buoyancy flux, dissipation and potential vorticity in rotating stratified turbulence. Atmosphere, doi:https://doi.org/10.3390/atmos12020157 We study in this paper the correlation between the buoyancy flux, the efficiency of energy dissipation and the linear and nonlinear components of potential vorticity, PV, a point-wise invariant of the Boussinesq equations, contrasting the t... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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Statistical issues in detection of trends in losses from extreme weather and climate events Katz, R., Lyubchich, V., Gel, Y. R., Kilbourne, K. H., Miller, T. J., et al. (2021). Statistical issues in detection of trends in losses from extreme weather and climate events. Evaluating Climate Change Impacts, doi:https://doi.org/10.1201/9781351190831-8 This chapter focuses on issues arising in the statistical analysis of losses from extreme weather and climate events, especially for the purpose of the detection of trends. Making use of extreme value theory, we attempt to reconcile the dif... CISL Affiliations: CISLAODEPT Publication Genre: Chapter View on OpenSky |
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Foust, W. E.. (2021). Pi-WRF instructions. , doi:https://doi.org/10.5065/sdhd-ft24 Instructions for running Weather Research Forecast Model (WRF) on a Raspberry Pi (version 3 or higher). CISL Affiliations: CODE Publication Genre: Manuscript View on OpenSky |
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Raeder, K. D., Hoar, T. J., Anderson, J. L., Gharamti, M. E., Johnson, B. K., et al. (2020). A new CAM6+DART 80-member ensemble reanalysis for 2011-2019: Atmospheric forcing for CLM, POP, CICE, and more. NCAR's Data Assimilation Research Testbed (DART) has generated an 80 member ensemble, global, atmospheric reanalysis with the Community Atmosphere Model v6 configuration of NCAR's Community Earth System Model (CESM), the same configuration ... CISL Affiliations: TDD, DARES Publication Genre: Conference Material View on OpenSky |
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Pangeo benchmarking analysis: Object storage vs. POSIX file system Xu, H., Paul, K., Banihirwe, A.. (2020). Pangeo benchmarking analysis: Object storage vs. POSIX file system. 2020 IEEE/ACM Fifth International Parallel Data Systems Workshop (PDSW), doi:https://doi.org/10.1109/PDSW51947.2020.00012 Pangeo is a community of scientists and software developers collaborating to enable Big Data Geoscience analysis interactively in the public cloud and on high-performance computing (HPC) systems. At the core of the Pangeo software stack is ... CISL Affiliations: TDD, IOWA Publication Genre: Article View on OpenSky |
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Buaria, D., Pumir, A., Feraco, F., Marino, R., Pouquet, A., et al. (2020). Single-particle Lagrangian statistics from direct numerical simulations of rotating-stratified turbulence. Physical Review Fluids, doi:https://doi.org/10.1103/PhysRevFluids.5.064801 Geophysical fluid flows are predominantly turbulent and often strongly affected by the Earth's rotation, as well as by stable density stratification. Using direct numerical simulations of forced Boussinesq equations, we study the influence ... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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Proceedings of the 2020 Improving Scientific Software Conference Hu, W., Vento, D. D., Su, S., Banihirwe, A., Burnhart-Lupo, N., et al. (2020). Proceedings of the 2020 Improving Scientific Software Conference. , doi:https://doi.org/10.5065/p2jj-9878 The Software Engineering Assembly (SEA) is a loosely structured group of software engineers and scientists who write scientific software, mostly but not only at NCAR and mostly but not only in the field of atmospheric sciences. The mission ... CISL Affiliations: USS, CSG, TDD, IOWA, CISLAODEPT Publication Genre: Technical Report View on OpenSky |
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Pouquet, A., Stawarz, J. E., Rosenberg, D. L.. (2020). Coupling large eddies and waves in turbulence: Case study of magnetic helicity at the ion inertial scale. Atmosphere, doi:https://doi.org/10.3390/atmos11020203 In turbulence, for neutral or conducting fluids, a large ratio of scales is excited because of the possible occurrence of inverse cascades to large, global scales together with direct cascades to small, dissipative scales, as observed in th... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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Barlow, M., Gutowski, W. J., Gyakum, J. R., Katz, R., Lim, Y., et al. (2019). North American extreme precipitation events and related large-scale meteorological patterns: A review of statistical methods, dynamics, modeling, and trends. Climate Dynamics, doi:https://doi.org/10.1007/s00382-019-04958-z This paper surveys the current state of knowledge regarding large-scale meteorological patterns (LSMPs) associated with short-duration (less than 1 week) extreme precipitation events over North America. In contrast to teleconnections, which... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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Pouquet, A., Rosenberg, D., Marino, R.. (2019). Linking dissipation, anisotropy, and intermittency in rotating stratified turbulence at the threshold of linear shear instabilities. Physics of Fluids, doi:https://doi.org/10.1063/1.5114633 Analyzing a large database of high-resolution three-dimensional direct numerical simulations of decaying rotating stratified flows, we show that anomalous mixing and dissipation, marked anisotropy, and strong intermittency are all observed ... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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Experience with mixed-precision within physics parameterizations Dennis, J. M., Milroy, D., Baker, A., Gettelman, A., Hammerling, D.. (2019). Experience with mixed-precision within physics parameterizations. CISL Affiliations: TDD, ASAP, CISLVISITORS, IOWA Publication Genre: Conference Material View on OpenSky |
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A multivariate global spatiotemporal stochastic generator for climate ensembles Edwards, M., Castruccio, S., Hammerling, D.. (2019). A multivariate global spatiotemporal stochastic generator for climate ensembles. Journal of Agricultural, Biological and Environmental Statistics, doi:https://doi.org/10.1007/s13253-019-00352-8 In order to understand and quantify the uncertainties in projections and physics of a climate model, a collection of climate simulations (an ensemble) is typically used. Given the high-dimensionality of the input space of a climate model, a... CISL Affiliations: CISLVISITORS Publication Genre: Article View on OpenSky |
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XSEDE integration with ORCID for research resources Hart, D. L., Soriano, E., Arnold, C., Peckins, S., Light, R., et al. (2019). XSEDE integration with ORCID for research resources. PEARC '19: Proceedings of the Practice and Experience in Advanced Research Computing on Rise of the Machines, doi:https://doi.org/10.1145/3332186.3333252 Many research infrastructure providers face the challenge of identifying the science output of their user communities. The XSEDE Resource Allocations Service (XRAS) has recently completed integration with the ORCID ecosystem, allowing XSEDE... CISL Affiliations: USS, USSSEC, CISLVISITORS Publication Genre: Article View on OpenSky |
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VAPOR: A visualization package tailored to analyze simulation data in Earth system science Li, S., Jaroszynski, S., Pearse, S., Orf, L., Clyne, J. P.. (2019). VAPOR: A visualization package tailored to analyze simulation data in Earth system science. Atmosphere, doi:https://doi.org/10.3390/atmos10090488 Visualization is an essential tool for analysis of data and communication of findings in the sciences, and the Earth System Sciences (ESS) are no exception. However, within ESS, specialized visualization requirements and data models, partic... CISL Affiliations: TDD, VAST Publication Genre: Article View on OpenSky |
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A Shallow-Tree Multi-resolution Approximation for Distributed and High-Performance Computing Systems Blake, L., Huang, H., Vanderwende, B., Hammerling, D.. (2019). A Shallow-Tree Multi-resolution Approximation for Distributed and High-Performance Computing Systems. , doi:https://doi.org/10.5065/hvvq-j471 We implement a parallel Multi-resolution Approximation (MRA) in Matlab using a Shallow-Tree approach designed for distributed computing environments and High-Performance Computing (HPC) systems. We significantly increase the data size that ... CISL Affiliations: USS, CSG, CISLVISITORS Publication Genre: Technical Report View on OpenSky |
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Planetary boundary layer height visualization Abouali, M., Bagusetty, A., Cherukuru, N., Clyne, J. P., Eroglu, O., et al. (2019). Planetary boundary layer height visualization. Planetary Boundary Layer (PBL) is the lowest part of the atmosphere which is directly influenced by the Earth's surface. The top of the PBL often acts like a cap to trap air in the layers below thus having a major influence on atmospheric p... CISL Affiliations: TDD, VAST Publication Genre: Data Visualization View on OpenSky |
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Elliott, S., Kumar, R. R. P., Flyer, N., Ta, T., Loft, R. D.. (2019). Implementation of a scalable, performance portable shallow water equation solver using radial basis function-generated finite difference methods. The International Journal of High Performance Computing Applications, doi:https://doi.org/10.1177/1094342018797170 In this article, we describe and analyze the computational performance of a parallel shallow water equation (SWE) solver for atmospheric simulation using radial basis function-finite difference (RBF-FD) methods. The inherent "meshless" natu... CISL Affiliations: TDD, STP, AIML, CISLAODEPT Publication Genre: Article View on OpenSky |
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Jones, M., Katz, R., Rajagopalan, B.. (2019). Climate change or climate regimes? Examining multi-annual variations in the frequency of precipitation extremes over the Argentine Pampas. Climate Dynamics, doi:https://doi.org/10.1007/s00382-018-4581-9 A recent period of increased precipitation over the Argentinian Pampas expanded the boundary of rain-fed agriculture. However, such changes may not be sustainable if they arose from transient climate regime shifts. Considerable research exi... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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Schreiber, M., Schaeffer, N., Loft, R. D.. (2019). Exponential integrators with parallel-in-time rational approximations for the shallow-water equations on the rotating sphere. Parallel Computing, doi:https://doi.org/10.1016/j.parco.2019.01.005 High performance computing trends towards many-core systems are expected to continue over the next decade. As a result, parallel-in-time methods, mathematical formulations which exploit additional degrees of parallelism in the time dimensio... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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Baker, A., Hammerling, D., Turton, T. L.. (2019). Evaluating image quality measures to assess the impact of lossy data compression applied to climate simulation data. Computer Graphics Forum, doi:https://doi.org/10.1111/cgf.13707 Applying lossy data compression to climate model output is an attractive means of reducing the enormous volumes of data generated by climate models. However, because lossy data compression does not exactly preserve the original data, its ap... CISL Affiliations: TDD, IOWA, CISLVISITORS Publication Genre: Article View on OpenSky |
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Review of the monograph by Pierre Sagaut and Claude Cambon entitled Homogeneous Turbulence Dynamics Pouquet, A.. (2019). Review of the monograph by Pierre Sagaut and Claude Cambon entitled Homogeneous Turbulence Dynamics. Journal of Turbulence, doi:https://doi.org/10.1080/14685248.2019.1579993 CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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A parallel time integrator for solving the linearized shallow water equations on the rotating sphere Schreiber, M., Loft, R. D.. (2019). A parallel time integrator for solving the linearized shallow water equations on the rotating sphere. Numerical Linear Algebra with Applications, doi:https://doi.org/10.1002/nla.2220 With the stagnation of processor core performance, further reductions in the time to solution for geophysical fluid problems are becoming increasingly difficult with standard time integrators. Parallel-in-time exposes and exploits additiona... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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Reduced precision microphysics parameterizations in CAM Dennis, J. M., Milroy, D., Gettelman, A., Baker, A.. (2019). Reduced precision microphysics parameterizations in CAM. CISL Affiliations: TDD, ASAP, CISLVISITORS, IOWA Publication Genre: Conference Material View on OpenSky |
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Jurek, M., Hammerling, D.. (2018). Parallel Implementation of the Multi-resolution Approximation for Large-scale Spatial Gaussian Models in Python. , doi:https://doi.org/10.26024/c04h-fd33 Gaussian processes have become a standard tool for modeling large atmospheric data sets. Traditional methods used in this context, such as kriging, are computationally infeasible for many data sets encountered in practice due to their size.... CISL Affiliations: TDD, AIML Publication Genre: Technical Report View on OpenSky |
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A Statistical Investigation of the CESM Ensemble Consistency Testing Framework Molinari, S., Milroy, D., Hammerling, D.. (2018). A Statistical Investigation of the CESM Ensemble Consistency Testing Framework. , doi:https://doi.org/10.26024/bfdr-nz31 Constant evolution and improvement of large scale climate simulation codes such as the Community Earth System Model (CESM) necessitate quality checks to verify the constitution of new climate simulations. The CESM Ensemble Consistency Test ... CISL Affiliations: TDD, AIML Publication Genre: Technical Report View on OpenSky |
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Modeling and emulation of nonstationary Gaussian fields Nychka, D., Hammerling, D., Krock, M., Wiens, A.. (2018). Modeling and emulation of nonstationary Gaussian fields. Spatial Statistics, doi:https://doi.org/10.1016/j.spasta.2018.08.006 Geophysical and other natural processes often exhibit nonstationary covariances and this feature is important for statistical models that attempt to emulate the physical process. A convolution-based model is used to represent nonstationary ... CISL Affiliations: CISLAODEPT, TDD, AIML Publication Genre: Article View on OpenSky |
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Proceedings of the 8th International Workshop on Climate Informatics: CI 2018 Chen, C., Cooley, D., Runge, J., Szekely, E., Ebert-Uphoff, I., et al. (2018). Proceedings of the 8th International Workshop on Climate Informatics: CI 2018. , doi:https://doi.org/10.5065/D6BZ64XQ Climate informatics is an emerging research area that combines the fields of climate science and data science (specifically machine learning, data mining and statistics) to accelerate scientific discovery in climate science. The annual clim... CISL Affiliations: TDD, AIML Publication Genre: Technical Report View on OpenSky |
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Parallel Python tools for handling big climate data Mickelson, S., Paul, K.. (2018). Parallel Python tools for handling big climate data. CISL Affiliations: TDD, IOWA Publication Genre: Conference Material View on OpenSky |
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Parallel implementation and computational analysis of the multi-resolution approximation Blake, L., Simonson, P., Hammerling, D.. (2018). Parallel implementation and computational analysis of the multi-resolution approximation. , doi:https://doi.org/10.5065/D6XW4HNH We design and implement a parallel version of the multi-resolution approximation (MRA) and analyze its computational performance for large geospatial datasets. Our parallelization extends to calculating the prior distribution, posterior dis... CISL Affiliations: TDD, AIML Publication Genre: Technical Report View on OpenSky |
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Evaluating the performance of the NEC Vector Engine and Cavium Thunder X2 on NCAR kernels Dennis, J. M., Dobbins, B., Kim, Y.. (2018). Evaluating the performance of the NEC Vector Engine and Cavium Thunder X2 on NCAR kernels. CISL Affiliations: TDD, ASAP, IOWA Publication Genre: Conference Material View on OpenSky |
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Using machine learning to simplify the identification of code optimization Uppala, R. K., Dennis, J. M., Kim, Y.. (2018). Using machine learning to simplify the identification of code optimization. Many of the scientific applications that execute on large scale parallel computing platforms run in a suboptimal fashion. Frequently, modest changes or optimizations to the internal calculation of the applications can significantly reduce t... CISL Affiliations: TDD, OSG, ASAP Publication Genre: Conference Material View on OpenSky |
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Reduced basis kriging for big spatial fields Pazdernik, K., Maitra, R., Nychka, D., Sain, S.. (2018). Reduced basis kriging for big spatial fields. Sankhya A, doi:https://doi.org/10.1007/s13171-018-0129-7 In spatial statistics, a common method for prediction over a Gaussian random field (GRF) is maximum likelihood estimation combined with kriging. For massive data sets, kriging is computationally intensive, both in terms of CPU time and memo... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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Insights on sea ice data assimilation from perfect model observing system simulation experiments Zhang, Y., Bitz, C. M., Anderson, J. L., Collins, N. S., Hendricks, J., et al. (2018). Insights on sea ice data assimilation from perfect model observing system simulation experiments. Journal of Climate, doi:https://doi.org/10.1175/JCLI-D-17-0904.1 Simulating Arctic sea ice conditions up to the present and predicting them several months in advance has high stakeholder value, yet remains challenging. Advanced data assimilation (DA) methods combine real observations with model forecasts... CISL Affiliations: DARES Publication Genre: Article View on OpenSky |
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Scaling laws for mixing and dissipation in unforced rotating stratified turbulence Pouquet, A., Rosenberg, D. L., Marino, R., Herbert, C.. (2018). Scaling laws for mixing and dissipation in unforced rotating stratified turbulence. Journal of Fluid Mechanics, doi:https://doi.org/10.1017/jfm.2018.192 We present a model for the scaling of mixing in weakly rotating stratified flows characterized by their Rossby, Froude and Reynolds numbers. This model is based on quasi-equipartition between kinetic and potential modes, sub-dominant vertic... Publication Genre: Article View on OpenSky |
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High performance computing and spatial data: An overview of recent work at NCAR Hammerling, D., Chen, S., Guinness, J., Jurek, M., Katzfuss, M., et al. (2018). High performance computing and spatial data: An overview of recent work at NCAR. CISL Affiliations: TDD, AIML, CISLAODEPT Publication Genre: Conference Material View on OpenSky |
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Climate, ecosystems, and planetary futures: The challenge to predict life in Earth system models Bonan, G. B., Doney, S.. (2018). Climate, ecosystems, and planetary futures: The challenge to predict life in Earth system models. Science, doi:https://doi.org/10.1126/science.aam8328 Many global change stresses on terrestrial and marine ecosystems affect not only ecosystem services that are essential to humankind, but also the trajectory of future climate by altering energy and mass exchanges with the atmosphere. Earth ... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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PySpark for "big" atmospheric data analysis Banihirwe, A., Paul, K., Vento, D. D.. (2018). PySpark for "big" atmospheric data analysis. Using NCAR's high performance computing systems, scientists perform many kinds of atmospheric data analysis with a variety of tools and workflows. Some of these, such as climate data analysis, are time intensive from both a human and comput... CISL Affiliations: TDD, IOWA, USS, CSG Publication Genre: Conference Material View on OpenSky |
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Data quality assurance and provenance tracking in ICOADS Release 3.0 Cram, T. A., Worley, S. J., Ji, Z., Schuster, D. C.. (2017). Data quality assurance and provenance tracking in ICOADS Release 3.0. CISL Affiliations: OSD, DSS Publication Genre: Conference Material View on OpenSky |
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Quality assurance and error identification for the Community Earth System Model Baker, A., Milroy, D., Hammerling, D., Xu, H.. (2017). Quality assurance and error identification for the Community Earth System Model. CISL Affiliations: TDD, ASAP, IOWAG, AIML Publication Genre: Conference Material View on OpenSky |
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Dual constant-flux energy cascades to both large scales and small scales Pouquet, A., Marino, R., Mininni, P. D., Rosenberg, D. L.. (2017). Dual constant-flux energy cascades to both large scales and small scales. Physics of Fluids, doi:https://doi.org/10.1063/1.5000730 In this paper, we present an overview of concepts and data concerning inverse cascades of excitation towards scales larger than the forcing scale in a variety of contexts, from two-dimensional fluids and wave turbulence to geophysical flows... Publication Genre: Article View on OpenSky |
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Inverse cascades and resonant triads in rotating and stratified turbulence Oks, D., Mininni, P. D., Marino, R., Pouquet, A.. (2017). Inverse cascades and resonant triads in rotating and stratified turbulence. Physics of Fluids, doi:https://doi.org/10.1063/1.5001740 Kraichnan's seminal ideas on inverse cascades yielded new tools to study common phenomena in geophysical turbulent flows. In the atmosphere and the oceans, rotation and stratification result in a flow that can be approximated as two-dimensi... Publication Genre: Article View on OpenSky |
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Spatiotemporal wavelet compression for visualization of scientific simulation data Li, S., Sane, S., Orf, L., Mininni, P. D., Clyne, J. P., et al. (2017). Spatiotemporal wavelet compression for visualization of scientific simulation data. Data reduction through compression is emerging as a promising approach to ease I/O costs for simulation codes on supercomputers. Typically, this compression is achieved by techniques that operate on individual time slices. However, as simul... CISL Affiliations: TDD, VAST Publication Genre: Conference Material View on OpenSky |
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Atmospheric data visualization in mixed reality Cherukuru, N., Calhoun, R., Scheitlin, T. W., Rehme, M., Kumar, R. R. P.. (2017). Atmospheric data visualization in mixed reality. Bulletin of the American Meteorological Society, doi:https://doi.org/10.1175/BAMS-D-15-00259.1 Mixed reality taps into intuitive human perception by merging computer-generated views of digital objects (or flow fields) with natural views. Digital objects can be positioned in 3D space and can mimic real objects in the sense that walkin... CISL Affiliations: TDD, VAST, SVSG, STP Publication Genre: Article View on OpenSky |
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Accelerating CMIP data analysis with parallel computing in R Milroy, D., Chen, S., Vanderwende, B., Hammerling, D.. (2017). Accelerating CMIP data analysis with parallel computing in R. , doi:https://doi.org/10.5065/D61V5CP8 In this Technical Note we examine eight schemes for parallelizing Extreme Value Analysis (EVA) on Coupled Model Intercomparison Project data via R foreach, doParallel, and doMPI packages. We perform strong scaling studies to delineate the p... CISL Affiliations: TDD, SDSS, OSD, USS, CSG Publication Genre: Technical Report View on OpenSky |
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Toy, M., Nair, R.. (2017). A potential enstrophy and energy conserving scheme for the shallow-water equations extended to generalized curvilinear coordinates. Monthly Weather Review, doi:https://doi.org/10.1175/MWR-D-16-0250.1 An energy and potential enstrophy conserving finite-difference scheme for the shallow-water equations is derived in generalized curvilinear coordinates. This is an extension of a scheme formulated by Arakawa and Lamb for orthogonal coordina... CISL Affiliations: CMG Publication Genre: Article View on OpenSky |
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Estimating the accuracy of user surveys for assessing the impact of HPC systems Hart, D. L., Rishel, M., Nychka, D.. (2016). Estimating the accuracy of user surveys for assessing the impact of HPC systems. Proceedings of the XSEDE16 Conference on Diversity, Big Data, and Science at Scale, doi:https://doi.org/10.1145/2949550.2949640 Each year, the Computational & Information Systems Laboratory (CISL) conducts a survey of its current and recent user community to gather a number of metrics about the scientific impact and outcomes from the use of CISL's high-performance c... CISL Affiliations: OSD, USS Publication Genre: Article View on OpenSky |
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Milroy, D. J., Baker, A., Hammerling, D., Dennis, J. M., Mickelson, S., et al. (2016). Towards characterizing the variability of statistically consistent Community Earth System Model simulations. Procedia Computer Science, doi:https://doi.org/10.1016/j.procs.2016.05.489 Large, complex codes such as earth system models are in a constant state of development, requiring frequent software quality assurance. The recently developed Community Earth System Model (CESM) Ensemble Consistency Test (CESM-ECT) provides... CISL Affiliations: TDD, ASAP, GSP, IOWAG Publication Genre: Article View on OpenSky |
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A high-order multiscale global atmospheric model Nair, R., Bao, L., Toy, M., Kloefkorn, R.. (2016). A high-order multiscale global atmospheric model. CISL Affiliations: CMG Publication Genre: Conference Material View on OpenSky |
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A Tutorial for Using 'Rmpi' on the NCAR/Wyoming Supercomputer Lenssen, N., Nychka, D., Hammerling, D., McGinnis, S. A.. (2016). A Tutorial for Using 'Rmpi' on the NCAR/Wyoming Supercomputer. , doi:https://doi.org/10.5065/D6X63K5S The recent growth in the size and complexity of climate data as well as the availability of cluster and supercomputing resources has brought parallel programming to the attention of geostatisticans. The National Center for Atmospheric Resea... CISL Affiliations: RISC Publication Genre: Technical Report View on OpenSky |
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KGEN: A divide-and-conquer approach for Fortran application modernization [poster] Kim, Y., Dennis, J. M., Baker, A., Kumar, R. R. P., Mickelson, S.. (2016). KGEN: A divide-and-conquer approach for Fortran application modernization [poster]. CISL Affiliations: TDD, ASAP, IOWAG, STP Publication Genre: Conference Material View on OpenSky |
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Anderson, A., Browning, J., Comeaux, J., Hering, A., Nychka, D.. (2016). A comparison of automated statistical quality control methods for error detection in historical radiosonde temperatures. International Journal of Climatology, doi:https://doi.org/10.1002/joc.4327 This paper presents a comparison of statistical methods for automated random error detection in historic radiosonde temperatures through a rigorous simulation study. We simulate temperature data designed to mimic observed radiosonde tempera... CISL Affiliations: OSD, DSS Publication Genre: Article View on OpenSky |
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Large-scale anisotropy in stably stratified rotating flows [poster] Marino, R., Mininni, P., Rosenberg, D., Pouquet, A.. (2015). Large-scale anisotropy in stably stratified rotating flows [poster]. Publication Genre: Conference Material View on OpenSky |
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Turbulence and waves: What's different? The case of rotating stratified turbulence [presentation] Pouquet, A., Marino, R., Mininni, P., Rorai, C., Rosenberg, D.. (2015). Turbulence and waves: What's different? The case of rotating stratified turbulence [presentation]. Publication Genre: Conference Material View on OpenSky |
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The effect of moderate rotation on stratified turbulence: A case for Bolgiano-Obukhov scaling Rosenberg, D. L., Pouquet, A., Marino, R., Mininni, P.. (2015). The effect of moderate rotation on stratified turbulence: A case for Bolgiano-Obukhov scaling. We report on decaying rotating stratified turbulence with large scale isotropic initial conditions using direct numerical simulation (DNS) on grids of up to N3p = 40963 points. The Reynolds and Froude numbers are Re = 5.4x104 and F r = 0.02... Publication Genre: Conference Material View on OpenSky |
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Small-scale behavior of Hall magnetohydrodynamic turbulence Stawarz, J. E., Pouquet, A.. (2015). Small-scale behavior of Hall magnetohydrodynamic turbulence. Physical Review E, doi:https://doi.org/10.1103/PhysRevE.92.063102 Decaying Hall magnetohydrodynamic (HMHD) turbulence is studied using three-dimensional (3D) direct numerical simulations with grids up to 768(3) points and two different types of initial conditions. Results are compared to analogous magneto... CISL Affiliations: CISLAODEPT Publication Genre: Article View on OpenSky |
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Marino, R., Rosenberg, D., Herbert, C., Pouquet, A.. (2015). Interplay of waves and eddies in rotating stratified turbulence and the link with kinetic-potential energy partition. Europhysics Letters, doi:https://doi.org/10.1209/0295-5075/112/49001 The interplay between waves and eddies in stably stratified rotating flows is investigated by means of world-class direct numerical simulations using up to 30723 grid points. Strikingly, we find that the shift from vortex- to wave-dominated... Publication Genre: Article View on OpenSky |
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The dynamic nature of congestion in InfiniBand Lu, Q., Russell, R. D., Mizero, F.. (2015). The dynamic nature of congestion in InfiniBand. The InfiniBand Congestion Control (CC) mechanism is able to reduce congestion and improve performance in many situations. In this paper we study the characteristics of congestion in InfiniBand by monitoring and analyzing the CC mechanism wi... CISL Affiliations: CISLAODEPT Publication Genre: Conference Material View on OpenSky |
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Many-core optimization of the Community Earth System Model [presentation] Dennis, J. M., Kerr, C. L., Kim, Y., Kumar, R. R. P., Oak, R., et al. (2015). Many-core optimization of the Community Earth System Model [presentation]. CISL Affiliations: TDD, ASAP Publication Genre: Conference Material View on OpenSky |
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KGEN: Fortran Kernel Generator [presentation] Kim, Y., Dennis, J. M., Kumar, R. R. P., Simha, A.. (2015). KGEN: Fortran Kernel Generator [presentation]. CISL Affiliations: TDD, ASAP Publication Genre: Conference Material View on OpenSky |
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Estimating the accuracy of user surveys for assessing the impact of HPC systems [poster] Rishel, M., Hart, D. L., Nychka, D.. (2015). Estimating the accuracy of user surveys for assessing the impact of HPC systems [poster]. NCAR's Computational & Information Systems Laboratory (CISL) operates supercomputing, data storage and archive systems that support more than a thousand users each year. These users pursue science objectives in the areas of climate, atmosph... CISL Affiliations: OSD Publication Genre: Conference Material View on OpenSky |
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Incorporating MAGMA into the 'fields' spatial statistics package Paige, J., Lyngaas, I., Ramakrishnaiah, V., Hammerling, D., Kumar, R. R. P., et al. (2015). Incorporating MAGMA into the 'fields' spatial statistics package. , doi:https://doi.org/10.5065/D6KP8078 In this report we describe how to incorporate the Cholesky decomposition from the Matrix Algebra on GPU and Multicore Architectures (MAGMA) library into some of the calculations of the 'fields' spatial statistics package in R. We provide MA... CISL Affiliations: TDD Publication Genre: Technical Report View on OpenSky |
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'fieldsMAGMA': A MAGMA-accelerated extension to the 'fields' spatial statistics R package Paige, J., Nychka, D., Hammerling, D.. (2015). 'fieldsMAGMA': A MAGMA-accelerated extension to the 'fields' spatial statistics R package. , doi:https://doi.org/10.5065/D6FX77HJ This report introduces the 'fieldsMAGMA' R package, an extension to the 'fields' package for spatial data analysis that is available on github. fieldsMAGMA uses the Cholesky decomposition functionality of the MAGMA multi-GPU, multi-CPU comp... Publication Genre: Technical Report View on OpenSky |
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Advanced user environment design and implementation on integrated multi-architecture supercomputers Kelly, R., LIU, S., Ghosh, S. S., Vento, D. D., Hart, D. L., et al. (2015). Advanced user environment design and implementation on integrated multi-architecture supercomputers. Proceedings of the 2015 XSEDE Conference: Scientific Advancements Enabled by Enhanced Cyberinfrastructure, doi:https://doi.org/10.1145/2792745.2792778 Scientists and engineers using supercomputer clusters should be able to focus on their scientific and technical work instead of worrying about operating their user environment. However, creating a convenient and effective user environment o... CISL Affiliations: OSD, HSS, CSG Publication Genre: Article View on OpenSky |
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Asteroseismic Modeling Portal (AMP) development [poster] Metcalfe, T., Xu, H., Middleton, D. E.. (2015). Asteroseismic Modeling Portal (AMP) development [poster]. CISL Affiliations: TDD, ASAP Publication Genre: Conference Material View on OpenSky |
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Asteroseismic Modeling Portal (AMP) development [presentation] Metcalfe, T., Xu, H., Middleton, D. E.. (2015). Asteroseismic Modeling Portal (AMP) development [presentation]. CISL Affiliations: TDD, ASAP Publication Genre: Conference Material View on OpenSky |
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Integrating Globus into the NCAR Research Data Archive User Services [presentation] Cram, T. A., Schuster, D. C., Ji, Z., Dattore, R. E., Worley, S. J.. (2015). Integrating Globus into the NCAR Research Data Archive User Services [presentation]. The NCAR Research Data Archive (RDA) contains a large and diverse collection of meteorological and oceanographic observations, operational and reanalysis outputs, and remote sensing datasets to support atmospheric and geoscience research. T... CISL Affiliations: OSD, DSS Publication Genre: Conference Material View on OpenSky |
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Integrating Globus into the NCAR Research Data Archive User Services [presentation] Cram, T. A., Schuster, D. C., Ji, Z., Dattore, R. E., Worley, S. J.. (2015). Integrating Globus into the NCAR Research Data Archive User Services [presentation]. The NCAR Research Data Archive (RDA) contains a large and diverse collection of meteorological and oceanographic observations, operational and reanalysis outputs, and remote sensing datasets to support atmospheric and geoscience research. T... CISL Affiliations: OSD, DSS Publication Genre: Conference Material View on OpenSky |
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Integrating Globus into the NCAR Research Data Archive User Services [poster] Cram, T. A., Schuster, D. C., Ji, Z., Dattore, R. E., Worley, S. J.. (2015). Integrating Globus into the NCAR Research Data Archive User Services [poster]. The NCAR Research Data Archive (RDA) contains a large and diverse collection of meteorological and oceanographic observations, operational and reanalysis outputs, and remote sensing datasets to support atmospheric and geoscience research. T... CISL Affiliations: OSD, DSS Publication Genre: Conference Material View on OpenSky |
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A time-split discontinuous galerkin transport scheme for Global Atmospheric Model Nair, R., Bao, L., Toy, M.. (2015). A time-split discontinuous galerkin transport scheme for Global Atmospheric Model. Procedia Computer Science, doi:https://doi.org/10.1016/j.procs.2015.05.471 A time-split transport scheme has been developed for the high-order multiscale atmospheric model (HOMAM). The spacial discretization of HOMAM is based on the discontinuous Galerkin method, combining the 2D horizontal elements on the cubed-s... CISL Affiliations: CMG Publication Genre: Article View on OpenSky |
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A multiresolution Gaussian process model for the analysis of large spatial datasets Nychka, D., Bandyopadhyay, S., Hammerling, D., Lindgren, F., Sain, S.. (2015). A multiresolution Gaussian process model for the analysis of large spatial datasets. Journal of Computational and Graphical Statistics, doi:https://doi.org/10.1080/10618600.2014.914946 We develop a multiresolution model to predict two-dimensional spatial fields based on irregularly spaced observations. The radial basis functions at each level of resolution are constructed using a Wendland compactly supported correlation f... Publication Genre: Article View on OpenSky |