Tropical Warm Pool Surface Heat Budgets and Temperature: Contrasts between 1997-98 El Nino and 1998-99 La Nina.

摘要

Seasonal and interannual variations of the net surface heating and sea surface temperature tendency in the tropical eastern Indian and western Pacific Oceans are studied. The surface heat fluxes are derived from the Special Sensor Mmicrowave/Imager and Japanese Geostationary Meteorological Satellite radiance measurements for the period October 1997-September 2000. It is found that the magnitude of solar heating is lager than that of evaporative cooling, but the spatial variation of the latter is significantly large than the former. As a result, the spatial variations of seasonal and interannual variability of the net surface heating follow closely that of evaporative cooling. Seasonal variations of the net surface heating and sea surface temperature tendency are significantly correlated, except for the equatorial western Pacific. The high correlation is primarily attributable to high correlation between seasonal cycles of solar heating and sea surface temperature tendency.