globalchange  > 气候变化事实与影响
DOI: 10.5194/hess-20-1459-2016
Scopus记录号: 2-s2.0-84966318657
论文题名:
Global root zone storage capacity from satellite-based evaporation
作者: Wang-Erlandsson L; , Bastiaanssen W; G; M; , Gao H; , Jägermeyr J; , Senay G; B; , Van Dijk A; I; J; M; , Guerschman J; P; , Keys P; W; , Gordon L; J; , Savenije H; H; G
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2016
卷: 20, 期:4
起始页码: 1459
结束页码: 1481
语种: 英语
Scopus关键词: Buffer storage ; Drought ; Evaporation ; Surface measurement ; Table lookup ; Uncertainty analysis ; Vegetation ; Atmosphere modeling ; Direct measurement ; Earth observations ; Energy balance equations ; Global land surface ; Hydrological modeling ; Land surface modelling ; Uncertain parameters ; Digital storage ; drought ; EOS ; evaporation ; hydrological modeling ; hydrology ; land cover ; rainforest ; rhizosphere ; root ; seasonality ; terrestrial ecosystem ; vegetation ; water storage
英文摘要: This study presents an "Earth observation-based" method for estimating root zone storage capacity-a critical, yet uncertain parameter in hydrological and land surface modelling. By assuming that vegetation optimises its root zone storage capacity to bridge critical dry periods, we were able to use state-of-the-art satellite-based evaporation data computed with independent energy balance equations to derive gridded root zone storage capacity at global scale. This approach does not require soil or vegetation information, is model independent, and is in principle scale independent. In contrast to a traditional look-up table approach, our method captures the variability in root zone storage capacity within land cover types, including in rainforests where direct measurements of root depths otherwise are scarce. Implementing the estimated root zone storage capacity in the global hydrological model STEAM (Simple Terrestrial Evaporation to Atmosphere Model) improved evaporation simulation overall, and in particular during the least evaporating months in sub-humid to humid regions with moderate to high seasonality. Our results suggest that several forest types are able to create a large storage to buffer for severe droughts (with a very long return period), in contrast to, for example, savannahs and woody savannahs (medium length return period), as well as grasslands, shrublands, and croplands (very short return period). The presented method to estimate root zone storage capacity eliminates the need for poor resolution soil and rooting depth data that form a limitation for achieving progress in the global land surface modelling community. © 2016 Author(s).
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78869
Appears in Collections:气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden; Department of Water Management, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, Netherlands; UNESCO-IHE, Institute for Water Education, Delft, Netherlands; Global Institute of Sustainability, Arizona State University, Tempe, AZ, United States; Research Domain Earth System Analysis, Potsdam Institute for Climate Impact Research, Potsdam, Germany; US Geological Survey, Earth Resources Observation and Science Centre, North Central Climate Science Centre, Fort Collins, CO, United States; Fenner School of Environment and Society, Australian National University, Canberra, Australia; CSIRO Land and Water, Canberra, Australia; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States

Recommended Citation:
Wang-Erlandsson L,, Bastiaanssen W,G,et al. Global root zone storage capacity from satellite-based evaporation[J]. Hydrology and Earth System Sciences,2016-01-01,20(4)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Wang-Erlandsson L]'s Articles
[, Bastiaanssen W]'s Articles
[G]'s Articles
百度学术
Similar articles in Baidu Scholar
[Wang-Erlandsson L]'s Articles
[, Bastiaanssen W]'s Articles
[G]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Wang-Erlandsson L]‘s Articles
[, Bastiaanssen W]‘s Articles
[G]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.