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Evidence of the recent decade change in global fresh water discharge and evapotranspiration revealed by reanalysis and satellite observations

Cited 4 time in scopus
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Title
Evidence of the recent decade change in global fresh water discharge and evapotranspiration revealed by reanalysis and satellite observations
Other Titles
인공위성 원격탐사와 재분석장 자료를 이용한 전지구 담수 양의 변화 연구
Authors
Sohn, Byung-Ju
Masayoshi Ishii
Steve Cocke
Duane E.Waliser
Park, Seong-Chan
Kim, Baek-Min
Baijun Tian
Seo, Ki-Weon
Subject
Meteorology & Atmospheric Sciences
Keywords
Discharge; Evapotranspiration; Reanalysis; Remote Sensing; Water Cycle
Issue Date
2012
Publisher
Springer
Citation
Sohn, Byung-Ju, et al. 2012. "Evidence of the recent decade change in global fresh water discharge and evapotranspiration revealed by reanalysis and satellite observations". Asia-Pacific Journal of Atmospheric Sciences, 48: 153-158.
Abstract
Variations of global evapotranspiration (ET) and fresh water discharge from land to oceans (D) are important components of global climate change, but have not been well monitored. In this study, we present an estimate of twenty years (1989 to 2008) variations of global D and ET derived from satellite remote-sensed measurements and recent reanalysis products, ERA-Interim and CFSR, by using a novel application of the water balance equations separately over land and over oceans. Time series of annual mean global D and ET from both satellite observations and reanalyses show clear positive and negative trends, respectively, as a result of modest increase of oceanic evaporation (Eo). The inter-annual variations of D are similar to the in-situ-based observations, and the negative trend of ET supports the previous result that relative humidity has decreased while temperature has increased on land. The results suggest considerable sensitivity of the terrestrial hydrological cycles (e.g. D and ET) to small changes in precipitation and oceanic evaporation.989 to 2008) variations of global D and ET derived from satellite remote-sensed measurements and recent reanalysis products, ERA-Interim and CFSR, by using a novel application of the water balance equations separately over land and over oceans. Time series of annual mean global D and ET from both satellite observations and reanalyses show clear positive and negative trends, respectively, as a result of modest increase of oceanic evaporation (Eo). The inter-annual variations of D are similar to the in-situ-based observations, and the negative trend of ET supports the previous result that relative humidity has decreased while temperature has increased on land. The results suggest considerable sensitivity of the terrestrial hydrological cycles (e.g. D and ET) to small changes in precipitation and oceanic evaporation.
URI
http://repository.kopri.re.kr/handle/201206/6207
DOI
http://dx.doi.org/10.1007/s13143-012-0015-5
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