Surface and subsurface temperature variations during 2009 El Nino manifestation over central and tropical Pacific Ocean

摘要

Tropical Pacific Ocean is an important to study for identifying the influence on Global circulation. El Nino /La Nina even occurs over the tropical Pacific Ocean, with temperatures oscillations. With respect to increase in temperatures, the intensity of El Nino can be divided into strong, moderate and weak. As per the intensity, the year 2009 is a moderate El Nino, but is peculiar due to delay in formation. In this article, TAO/TRITON data is used for analysis between November 2008 and December 2009 to check the variations in the surface and sub-surface temperatures during the manifestation of El Nino. Actually El Nino manifest during December, but during 2009 El Nino it manifested in January. There is a clear evidence in surface and sub-surface temperatures as they are increasing from January 2009, which can explains the manifestation of El Nino.