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|a Satellite-based global-ocean mass balance estimates of interannual variability and emerging trends in continental freshwater discharge |h [electronic resource]. |
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|a [S.l.] : |b Proceedings of the National Academy of Sciences, |c 2010-08-27. |
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|a Please contact the owning institution for licensing and permissions. It is the user's responsibility to ensure use does not violate any third party rights. |
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|a Freshwater discharge from the continents is a key component of
Earth’s water cycle that sustains human life and ecosystem health.
Surprisingly, owing to a number of socioeconomic and political obstacles,
a comprehensive global river discharge observing system
does not yet exist. Here we use 13 years (1994–2006) of satellite
precipitation, evaporation, and sea level data in an ocean mass
balance to estimate freshwater discharge into the global ocean.
Results indicate that global freshwater discharge averaged
36,055 km3∕y for the study period while exhibiting significant
interannual variability driven primarily by El Niño Southern Oscillation
cycles. The method described here can ultimately be used to
estimate long-term global discharge trends as the records of
sea level rise and ocean temperature lengthen. For the relatively
short 13-year period studied here, global discharge increased by
540 km3∕y2, which was largely attributed to an increase of globalocean
evaporation (768 km3∕y2). Sustained growth of these flux
rates into long-term trends would provide evidence for increasing
intensity of the hydrologic cycle. |
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|a Electronic reproduction. |c Florida International University, |d 2015. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15042562/00001 |y Click here for full text |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/04/25/62/00001/FI15042562_thm.jpg |