Sea surface temperature and salinity seasonal changes in the western Solomon and Bismarck Seas
作者： Thierry Delcroix , Marie-Hélène Radenac , Sophie Cravatte , Gaël Alory , Lionel Gourdeau
DOI: 10.1002/2013JC009733
关键词:
摘要: We analyze mean and seasonal change of Sea Surface Temperature (SST) Salinity (SSS) in the Solomon Bismarck Seas, using 1977–2009 situ data collected from Voluntary Observing Ships. Covariability these two variables with surface wind, altimeter-derived model-derived horizontal currents, precipitation, Sepik River discharge are examined. SST SSS show large annual oscillations Sea, coldest saltiest waters occurring July/August mainly due to horizontal advection. In contrast, they semiannual Sea. There, and saltiest happen January/February, when northwest monsoon winds drive coastal upwelling, and July/August, New Guinea Coastal Current advects cold high-salinity the Solomon through Vitiaz Strait. The low values observed April/May, stuck between January/ February maxima, further enhanced by maximum. A high-resolution model strengthens conclusions we derive observations. impacts ENSO on SST also discussed with, for instance, saltier-than-average fresher-than-average during the 2002–2003 El Ni~no 2007–2008 La Ni~na, respectively.
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