Mathematics – Logic
Scientific paper
Apr 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3408706w&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 8, CiteID L08706
Mathematics
Logic
5
Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513), Global Change: Oceans (1616, 3305, 4215, 4513), Global Change: Climate Dynamics (0429, 3309), Global Change: Water Cycles (1836), Hydrology: Climate Impacts
Scientific paper
An intensification of the hydrological cycle is a likely consequence of global warming. But changes in the hydrological cycle could affect sea-surface temperature by modifying diffusive ocean heat transports. We investigate this mechanism by studying a coupled general circulation model sensitivity experiment in which the hydrological cycle is artificially amplified. We find that the amplified hydrological cycle depresses sea-surface temperature by enhancing ocean heat uptake in low latitudes. We estimate that a 10% increase in the hydrological cycle will contribute a basin-scale sea-surface temperature decrease of around 0.1°C away from high latitudes, with larger decreases locally. We conclude that an intensified hydrological cycle is likely to contribute a weak negative feedback to anthropogenic climate change.
Gregory Jonathan
Guilyardi Eric
Madec Gurvan
Sutton Rowan
Williams Paul D.
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