Journal
ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES
Volume 48, Issue 2, Pages 153-158Publisher
KOREAN METEOROLOGICAL SOC
DOI: 10.1007/s13143-012-0015-5
Keywords
Discharge; evapotranspiration; water cycle; remote sensing; reanalysis
Categories
Funding
- Korea Polar Research Institute (KOPRI) [PE11070]
- National Aeronautics and Space Administration
- National Research Council of Science & Technology (NST), Republic of Korea [pe11070] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
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 (E-o ). 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available