R
Randal D. Koster
Researcher at Goddard Space Flight Center
Publications - 218
Citations - 37196
Randal D. Koster is an academic researcher from Goddard Space Flight Center. The author has contributed to research in topics: Precipitation & Data assimilation. The author has an hindex of 78, co-authored 211 publications receiving 31598 citations. Previous affiliations of Randal D. Koster include Massachusetts Institute of Technology.
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Journal ArticleDOI
MERRA: NASA’s Modern-Era Retrospective Analysis for Research and Applications
Michele M. Rienecker,Max J. Suarez,Ronald Gelaro,Ricardo Todling,Julio T. Bacmeister,Julio T. Bacmeister,Emily Liu,Emily Liu,Michael G. Bosilovich,Siegfried D. Schubert,Lawrence L. Takacs,Lawrence L. Takacs,Gi-Kong Kim,S. C. Bloom,S. C. Bloom,Junye Chen,Junye Chen,Douglas Collins,Douglas Collins,Austin Conaty,Austin Conaty,Arlindo da Silva,Wei Gu,Wei Gu,Joanna Joiner,Randal D. Koster,Robert A. Lucchesi,Robert A. Lucchesi,Andrea Molod,Andrea Molod,Tommy Owens,Tommy Owens,Steven Pawson,Philip Pegion,Philip Pegion,Christopher R. Redder,Christopher R. Redder,Rolf H. Reichle,Franklin R. Robertson,Albert G. Ruddick,Albert G. Ruddick,Meta Sienkiewicz,Meta Sienkiewicz,John S. Woollen +43 more
TL;DR: The Modern-Era Retrospective Analysis for Research and Applications (MERRA) was undertaken by NASA's Global Modeling and Assimilation Office with two primary objectives: to place observations from NASA's Earth Observing System satellites into a climate context and to improve upon the hydrologic cycle represented in earlier generations of reanalyses as mentioned in this paper.
Journal ArticleDOI
The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2)
Ronald Gelaro,Will McCarty,Max J. Suarez,Max J. Suarez,Ricardo Todling,Andrea Molod,Lawrence L. Takacs,Cynthia A. Randles,Cynthia A. Randles,Anton Darmenov,Michael G. Bosilovich,Rolf H. Reichle,Krzysztof Wargan,Lawrence Coy,Richard I. Cullather,Richard I. Cullather,Clara S. Draper,Clara S. Draper,Santha Akella,V. Buchard,V. Buchard,Austin Conaty,Arlindo da Silva,Wei Gu,Gi-Kong Kim,Randal D. Koster,Robert A. Lucchesi,Dagmar Merkova,J. E. Nielsen,Gary Partyka,Steven Pawson,William M. Putman,Michele M. Rienecker,Siegfried D. Schubert,Meta Sienkiewicz,Bin Zhao,Bin Zhao +36 more
TL;DR: An overview of the MERRA-2 system and various performance metrics is provided, including the assimilation of aerosol observations, several improvements to the representation of the stratosphere including ozone, and improved representations of cryospheric processes.
Journal ArticleDOI
Regions of Strong Coupling Between Soil Moisture and Precipitation
Randal D. Koster,Paul A. Dirmeyer,Zhichang Guo,Gordon B. Bonan,Edmond Chan,Peter M. Cox,C. T. Gordon,Shinjiro Kanae,Eva Kowalczyk,David M. Lawrence,Ping Liu,Cheng-Hsuan Lu,Sergey Malyshev,Bryant J. McAvaney,Kenneth E. Mitchell,David Mocko,Taikan Oki,Keith W. Oleson,Andrew J. Pitman,Yogesh C. Sud,Christopher M. Taylor,Diana Verseghy,R. Vasic,Yongkang Xue,Tomohito J. Yamada +24 more
TL;DR: A multimodel estimation of the regions on Earth where precipitation is affected by soil moisture anomalies during Northern Hemisphere summer indicates potential benefits of this estimation may include improved seasonal rainfall forecasts.
Journal ArticleDOI
The Soil Moisture Active Passive (SMAP) Mission
Dara Entekhabi,Eni G. Njoku,Peggy O'Neill,Kent Kellogg,Wade T. Crow,W. Edelstein,Jared Entin,Shawn D Goodman,Thomas J. Jackson,Joel T. Johnson,John S. Kimball,Jeffrey R. Piepmeier,Randal D. Koster,Neil R.W. Martin,Kyle C. McDonald,Mahta Moghaddam,Susan Moran,Rolf H. Reichle,Jiancheng Shi,Michael W. Spencer,Samuel W Thurman,Leung Tsang,Jakob van Zyl +22 more
TL;DR: The Soil Moisture Active Passive mission is one of the first Earth observation satellites being developed by NASA in response to the National Research Council's Decadal Survey to make global measurements of the soil moisture present at the Earth's land surface.
The GEOS-5 Data Assimilation System-Documentation of Versions 5.0.1, 5.1.0, and 5.2.0
Max J. Suarez,Michele M. Rienecker,Ricardo Todling,Julio T. Bacmeister,Lawrence L. Takacs,H. C. Liu,Wei Gu,Meta Sienkiewicz,Randal D. Koster,Ronald Gelaro,Ivanka Stajner,J. E. Nielsen +11 more
TL;DR: The GEOS-5 global atmospheric model and data assimilation system (DAS) as discussed by the authors has been developed by NASA for the Modem Era Retrospective analysis for Research and Applications (MERRA).