DOI: 10.1002/2015GL066563
论文题名: A submonthly database for detecting changes in vegetation-atmosphere coupling
作者: Zscheischler J. ; Orth R. ; Seneviratne S.I.
刊名: Geophysical Research Letters
ISSN: 0094-8427
EISSN: 1944-8158
出版年: 2015
卷: 42, 期: 22 起始页码: 9816
结束页码: 9824
语种: 英语
英文关键词: FPAR
; land-atmosphere coupling
Scopus关键词: Climatology
; Soil moisture
; Climate feedbacks
; Different class
; Extreme climates
; FPAR
; High temporal resolution
; Land-atmosphere couplings
; Moisture state
; Photosynthetic activity
; Vegetation
; atmosphere-biosphere interaction
; climate feedback
; climate prediction
; database
; detection method
; drought
; evaporation
; extreme event
; future prospect
; heat flux
; index method
; photosynthesis
; precision
; temperature anomaly
; vegetation dynamics
; Amazonia
; Russian Federation
英文摘要: Land-atmosphere coupling and changes in coupling regimes are important for making precise future climate predictions and understanding vegetation-climate feedbacks. Here we introduce the Vegetation-Atmosphere Coupling (VAC) index which identifies regions and times of concurrent strong anomalies in temperature and photosynthetic activity. The different classes of the index determine whether a location is currently in an energy-limited or water-limited regime, and its high temporal resolution allows to investigate how these regimes change over time at the regional scale. We show that the VAC index helps to distinguish different evaporative regimes. It can therefore provide indirect information about the local soil moisture state. We further demonstrate how the index can be used to understand processes leading to and occurring during extreme climate events, using the 2010 heat wave in Russia and the 2010 Amazon drought as examples. Key Points The Vegetation-Atmosphere Coupling (VAC) index between FPAR and temperature is introduced The VAC index distinguishes between atmospheric and land-driven evaporative regimes The VAC index indicates strong coupling particularly during droughts and heat waves. ©2015. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956890946&doi=10.1002%2f2015GL066563&partnerID=40&md5=70d118f2782e1ae856d7ddd96acb2472
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8043
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland
Recommended Citation:
Zscheischler J.,Orth R.,Seneviratne S.I.. A submonthly database for detecting changes in vegetation-atmosphere coupling[J]. Geophysical Research Letters,2015-01-01,42(22).