Physics
Scientific paper
Feb 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3603703w&link_type=abstract
Geophysical Research Letters, Volume 36, Issue 3, CiteID L03703
Physics
1
Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513), Hydrology: Climate Impacts, Hydrology: Hydroclimatology, Hydrology: Water/Energy Interactions (0495)
Scientific paper
The 11-year solar cycle is used as the basis of imparting variability in solar forcing in a General Circulation Model. Using different amplitude solar forcing it was found that the resulting global atmospheric moisture content exhibited a high power in its wavelet spectrum at the 11-year frequency. To identify long term climatic trends, the Earth's atmosphere was conceptualized as a storage reservoir filling and depleting the atmospheric moisture with time. A high required storage implied that the climate of that region exhibits larger climate variations leading to a larger moisture scarcity or drought. It was found that regions that had relatively small storage requirements experienced an increase in storage required due to the 11-year solar cycle, while regions with relatively large storage requirements experiencing a decrease in storage. It is concluded that the 11-year solar cycle may act to reduce sustained variations in moisture availability across significant climatic regions.
Sharma Ashish
Wasko Conrad
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