气候变化领域集成服务门户(CCPortal): Surface-Atmosphere Coupling Scale, the Fate of Water, and Ecophysiological Function in a Brazilian Forest

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DOI	10.1029/2019MS001650
	Surface-Atmosphere Coupling Scale, the Fate of Water, and Ecophysiological Function in a Brazilian Forest
	Baker I.T.; Denning A.; Dazlich D.A.; Harper A.B.; Branson M.D.; Randall D.A.; Phillips M.C.; Haynes K.D.; Gallup S.M.
发表日期	2019
ISSN	19422466
起始页码	2523
结束页码	2546
卷号	11 期号:8
英文摘要	Tropical South America plays a central role in global climate. Bowen ratio teleconnects to circulation and precipitation processes far afield, and the global CO2 growth rate is strongly influenced by carbon cycle processes in South America. However, quantification of basin-wide seasonality of flux partitioning between latent and sensible heat, the response to anomalies around climatic norms, and understanding of the processes and mechanisms that control the carbon cycle remains elusive. Here, we investigate simulated surface-atmosphere interaction at a single site in Brazil, using models with different representations of precipitation and cloud processes, as well as differences in scale of coupling between the surface and atmosphere. We find that the model with parameterized clouds/precipitation has a tendency toward unrealistic perpetual light precipitation, while models with explicit treatment of clouds produce more intense and less frequent rain. Models that couple the surface to the atmosphere on the scale of kilometers, as opposed to tens or hundreds of kilometers, produce even more realistic distributions of rainfall. Rainfall intensity has direct consequences for the “fate of water,” or the pathway that a hydrometeor follows once it interacts with the surface. We find that the model with explicit treatment of cloud processes, coupled to the surface at small scales, is the most realistic when compared to observations. These results have implications for simulations of global climate, as the use of models with explicit (as opposed to parameterized) cloud representations becomes more widespread. ©2019. The Authors.
英文关键词	carbon cycle; land-atmosphere interaction; multiscale modeling; tropical ecophysiology
语种	英语
scopus关键词	Carbon; Growth rate; Rain; Carbon cycle process; Carbon cycles; Ecophysiology; Explicit treatments; Land atmosphere interaction; Multi-scale Modeling; Precipitation process; Surface atmosphere interaction; Climate models; air-soil interaction; Bowen ratio; ecophysiology; global climate; precipitation (climatology); seasonality; telecommuting; teleconnection; tropical region; Brazil
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156880
作者单位	Atmospheric Science Department, Colorado State University, Fort Collins, CO, United States; College of Engineering, Mathematics, and Physical Sciences, University of Exeter, Exeter, United Kingdom
推荐引用方式 GB/T 7714	Baker I.T.,Denning A.,Dazlich D.A.,et al. Surface-Atmosphere Coupling Scale, the Fate of Water, and Ecophysiological Function in a Brazilian Forest[J],2019,11(8).
APA	Baker I.T..,Denning A..,Dazlich D.A..,Harper A.B..,Branson M.D..,...&Gallup S.M..(2019).Surface-Atmosphere Coupling Scale, the Fate of Water, and Ecophysiological Function in a Brazilian Forest.Journal of Advances in Modeling Earth Systems,11(8).
MLA	Baker I.T.,et al."Surface-Atmosphere Coupling Scale, the Fate of Water, and Ecophysiological Function in a Brazilian Forest".Journal of Advances in Modeling Earth Systems 11.8(2019).