globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-16-0609.1
Scopus记录号: 2-s2.0-85020612229
论文题名:
The MERRA-2 aerosol reanalysis, 1980 onward. Part I: System description and data assimilation evaluation
作者: Randles C.A.; da Silva A.M.; Buchard V.; Colarco P.R.; Darmenov A.; Govindaraju R.; Smirnov A.; Holben B.; Ferrare R.; Hair J.; Shinozuka Y.; Flynn C.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期:17
起始页码: 6823
结束页码: 6850
语种: 英语
Scopus关键词: Aerosols ; Aircraft instruments ; Atmospheric aerosols ; Earth (planet) ; NASA ; Remote sensing ; Space platforms ; Systems analysis ; Data assimilation ; Model evaluation/performance ; Radiative fluxes ; Reanalysis ; Satellite observations ; Quality control
英文摘要: The Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2), updates NASA's previous satellite-era (1980 onward) reanalysis system to include additional observations and improvements to the Goddard Earth Observing System, version 5 (GEOS-5), Earth system model. As a major step toward a full Integrated Earth Systems Analysis (IESA), in addition to meteorological observations, MERRA-2 now includes assimilation of aerosol optical depth (AOD) from various ground- and space-based remote sensing platforms. Here, in the first of a pair of studies, the MERRA-2 aerosol assimilation is documented, including a description of the prognostic model (GEOS-5 coupled to the GOCART aerosol module), aerosol emissions, and the quality control of ingested observations. Initial validation and evaluation of the analyzed AOD fields are provided using independent observations from ground, aircraft, and shipborne instruments. The positive impact of the AOD assimilation on simulated aerosols is demonstrated by comparing MERRA-2 aerosol fields to an identical control simulation that does not include AOD assimilation. After showing the AOD evaluation, this paper takes a first look at aerosol-climate interactions by examining the shortwave, clear-sky aerosol direct radiative effect. The companion paper (Part II) evaluates and validates available MERRA-2 aerosol properties not directly impacted by the AOD assimilation (e.g., aerosol vertical distribution and absorption). Importantly, while highlighting the skill of the MERRA-2 aerosol assimilation products, both studies point out caveats that must be considered when using this new reanalysis product for future studies of aerosols and their interactions with weather and climate. © 2017 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49892
Appears in Collections:气候变化事实与影响

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作者单位: Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Goddard Earth Sciences Technology and Research, Universities Space Research Association, Columbia, MD, United States; Atmospheric Chemistry and Dynamics Lab, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Science Systems and Applications, Inc., Lanham, MD, United States; NASA Biospheric Sciences Laboratory, Greenbelt, MD, United States; NASA Langley Research Center, Hampton, VA, United States; Bay Area Environmental Research Institute, Petaluma, CA, United States; NASA Ames Research Center Cooperative for Research in Earth Science and Technology, Moffett Field, CA, United States; Pacific Northwest National Laboratory, Richland, WA, United States; ExxonMobil Research and Engineering Company, Annandale, NJ, United States

Recommended Citation:
Randles C.A.,da Silva A.M.,Buchard V.,et al. The MERRA-2 aerosol reanalysis, 1980 onward. Part I: System description and data assimilation evaluation[J]. Journal of Climate,2017-01-01,30(17)
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