期刊
JOURNAL OF CLIMATE
卷 23, 期 23, 页码 6133-6142出版社
AMER METEOROLOGICAL SOC
DOI: 10.1175/2010JCLI3700.1
关键词
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资金
- United States-Israel Binational Science Foundation
- Prize Postdoctoral Fellowship through Caltech's Division of Geological and Planetary Sciences
- NOAA
- NSF [ATM-0902844]
- Div Atmospheric & Geospace Sciences
- Directorate For Geosciences [0902844] Funding Source: National Science Foundation
Although the sun crosses the equator 2 times per year at the equinoxes, at times in the past the equatorial Insolation has had only one maximum and one minimum throughout the seasonal cycle because of Milankovitch orbital variations. Here a state-of-the-art coupled atmosphere-ocean general circulation model is used to study the effect of such insolation forcing on equatorial surface properties, including air and sea temperature, salinity, winds, and currents. It is shown that the equatorial seasonality is altered according to the insolation with, for example, either maximum sea surface temperature (SST) close to the vernal equinox and minimum SST close to the autumnal equinox or vice versa. The results may have Important implications for understanding tropical climate as well as for the interpretation of proxy data collected from equatorial regions
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