气候变化领域集成服务门户(CCPortal): Terrestrial and Atmospheric Controls on Surface Energy Partitioning and Evaporative Fraction Regimes Over the Tibetan Plateau in the Growing Season

CCPortal

DOI	10.1029/2021JD035011
	Terrestrial and Atmospheric Controls on Surface Energy Partitioning and Evaporative Fraction Regimes Over the Tibetan Plateau in the Growing Season
	Yang, Chenyi; Ma, Yaoming; Yuan, Yuan
通讯作者	Ma, YM (通讯作者)
发表日期	2021
ISSN	2169-897X
EISSN	2169-8996
卷号	126 期号:21
英文摘要	Land-atmosphere interactions are an essential component of the climate system. However, no detailed description of the underlying effects of the surface forcing of the atmosphere has been established. In this study, GLEAM, MODIS, and ERA5 were the input set of multiple analysis algorithms, segmentation was the core idea of the analysis method. The study area is segmented into six surface response functional groups, and the multidimensional evaporation regime function was segmented into piecewise functions controlled by segment authoritative variables. Inspired by the surface heat balance equation and moisture-limited, energy-limited evaporation regimes, we chose soil moisture content and the net radiation flux to represent the moisture and energy status, respectively, and chose the leaf area index (LAI) to characterize the vegetation cover to investigate the primary effects of surface parameters on the energy partitioning of the land surface and evaporative regime. The results show that though a coupling strength 1.8 times greater was obtained when the LAI was used as the response variable instead of soil moisture, soil moisture was still the highest response variable in the regression tree analysis. This is consistent with the essence of the evaporative fraction and indicates that water should be the most fundamental response variable. The evaporative regime was subdivided from two phases into five phases according to the effects such as water extraction by vegetation, photosynthesis, soil shading, and roughness changes, each with an authoritative response variable.
关键词	SOIL-MOISTURE BOUNDARY-LAYER LAND-SURFACE CLIMATE-CHANGE PRECIPITATION VEGETATION FEEDBACKS EVAPOTRANSPIRATION ASSIMILATION DIAGNOSTICS
英文关键词	land-atmosphere interactions; land heterogeneous components; water-energy interactions; evaporative fraction; Tibetan Plateau
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000716774200018
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260244
推荐引用方式 GB/T 7714	Yang, Chenyi,Ma, Yaoming,Yuan, Yuan. Terrestrial and Atmospheric Controls on Surface Energy Partitioning and Evaporative Fraction Regimes Over the Tibetan Plateau in the Growing Season[J]. 中国科学院青藏高原研究所,2021,126(21).
APA	Yang, Chenyi,Ma, Yaoming,&Yuan, Yuan.(2021).Terrestrial and Atmospheric Controls on Surface Energy Partitioning and Evaporative Fraction Regimes Over the Tibetan Plateau in the Growing Season.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(21).
MLA	Yang, Chenyi,et al."Terrestrial and Atmospheric Controls on Surface Energy Partitioning and Evaporative Fraction Regimes Over the Tibetan Plateau in the Growing Season".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.21(2021).