DOI: 10.5194/hess-21-409-2017
Scopus记录号: 2-s2.0-85010338573
论文题名: Land surface albedo and vegetation feedbacks enhanced the millennium drought in south-east Australia
作者: Evans J ; P ; , Meng X ; , McCabe M ; F
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2017
卷: 21, 期: 1 起始页码: 409
结束页码: 422
语种: 英语
Scopus关键词: Atmospheric pressure
; Climate models
; Climatology
; Soil moisture
; Solar radiation
; Surface measurement
; Vegetation
; Land surface albedo
; Millennium droughts
; Precipitation anomalies
; Regional climate modeling (RCM)
; Southern oscillation
; Surface characteristics
; Vegetation feedbacks
; Vegetation fractions
; Drought
; albedo
; climate modeling
; drought
; El Nino-Southern Oscillation
; land surface
; precipitation (climatology)
; regional climate
; soil moisture
; vegetation cover
; Australia
英文摘要: In this study, we have examined the ability of a regional climate model (RCM) to simulate the extended drought that occurred throughout the period of 2002 through 2007 in south-east Australia. In particular, the ability to reproduce the two drought peaks in 2002 and 2006 was investigated. Overall, the RCM was found to reproduce both the temporal and the spatial structure of the drought-related precipitation anomalies quite well, despite using climatological seasonal surface characteristics such as vegetation fraction and albedo. This result concurs with previous studies that found that about two-thirds of the precipitation decline can be attributed to the El Ninõ–Southern Oscillation (ENSO). Simulation experiments that allowed the vegetation fraction and albedo to vary as observed illustrated that the intensity of the drought was underestimated by about 10ĝ% when using climatological surface characteristics. These results suggest that in terms of drought development, capturing the feedbacks related to vegetation and albedo changes may be as important as capturing the soil moisture–precipitation feedback. In order to improve our modelling of multi-year droughts, the challenge is to capture all these related surface changes simultaneously, and provide a comprehensive description of land surface–precipitation feedback during the droughts development. © 2017 The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79289
Appears in Collections: 气候变化事实与影响
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作者单位: Climate Change Research Centre, ARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney, NSW, Australia; Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou, China; Water Desalination and Reuse Center, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
Recommended Citation:
Evans J,P,, Meng X,et al. Land surface albedo and vegetation feedbacks enhanced the millennium drought in south-east Australia[J]. Hydrology and Earth System Sciences,2017-01-01,21(1)