DOI: 10.1175/JCLI-D-16-0089.1
Scopus记录号: 2-s2.0-84995484532
论文题名: The seasonal cycle of the radiation budget and cloud radiative effect in the amazon rain forest of Brazil
作者: Collow A.B.M. ; Miller M.A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 21 起始页码: 7703
结束页码: 7722
语种: 英语
Scopus关键词: Atmospheric radiation
; Budget control
; Forestry
; Radiation
; Radiometry
; Rain
; Water vapor
; Amazon region
; Cloud radiative effects
; Long-wave radiation
; Radiation budget
; Radiative fluxes
; Short-wave radiation
; Radiation effects
英文摘要: Changes in the climate system of the Amazon rain forest of Brazil can impact factors that influence the radiation budget such as clouds, atmospheric moisture, and the surface albedo. This study examines the relationships between clouds and radiation in this region using surface observations from the first year of the deployment of the Atmospheric Radiation Measurement (ARM) Program's Mobile Facility 1 (AMF1) in Manacapuru, Brazil, and satellite measurements from the Clouds and the Earth's Radiant Energy System (CERES). The seasonal cycles of the radiation budget and cloud radiative effects (CREs) are evaluated at the top of the atmosphere (TOA), at the surface, and within the atmospheric column using these observations and are placed into a regional context using the Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2). Water vapor and clouds are abundant throughout the year, even though slight decreases are observed in the dry season. The column water vapor load is large enough that the longwave radiative flux divergence is nearly constant throughout the year. Clouds produce a significant shortwave CRE at the surface and TOA, exceeding 200 W m-2 during the wet season. Discrepancies, especially in column shortwave radiative absorption, between the observations and MERRA-2 are demonstrated that warrant additional analysis of the microphysical and macrophysical cloud properties in MERRA-2. More trustworthy fields in the MERRA-2 product suggest that the expansive nearby river system impacts the regional radiation budget and thereby renders AMF1 observations potentially biased relative to regions farther removed from rivers within the Amazon rain forest. © 2016 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50207
Appears in Collections: 气候变化事实与影响
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作者单位: Universities Space Research Association, Colombia; Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Institute of Earth, Ocean and Atmospheric Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ, United States
Recommended Citation:
Collow A.B.M.,Miller M.A.. The seasonal cycle of the radiation budget and cloud radiative effect in the amazon rain forest of Brazil[J]. Journal of Climate,2016-01-01,29(21)