Delcroix Thierry auteur aut IRD Radenac Marie-Hélène auteur aut IRD Cravatte Sophie auteur aut IRD Alory G. auteur aut IRD Gourdeau L. auteur aut IRD Léger F. auteur aut IRD Singh A. auteur aut IRD Varillon David auteur aut IRD text journalArticle eng text/pdf born digital access We analyze mean and seasonal change of Sea Surface Temperature (SST) and Salinity (SSS) in the Solomon and Bismarck Seas, using 1977-2009 in situ data collected from Voluntary Observing Ships. Covariability of these two variables with surface wind, altimeter-derived and model-derived horizontal currents, precipitation, and Sepik River discharge are examined. SST and SSS show large annual oscillations in the Solomon Sea, with the coldest and saltiest waters occurring in July/August mainly due to horizontal advection. In contrast, they show large semiannual oscillations in the Bismarck Sea. There, the coldest and saltiest waters happen in January/February, when the northwest monsoon winds drive coastal upwelling, and in July/August, when the New Guinea Coastal Current advects cold and high-salinity waters from the Solomon Sea through Vitiaz Strait. The low SSS values observed in April/May, stuck between the January/February and July/August SSS maxima, are further enhanced by the Sepik River discharge annual maximum. A high-resolution model strengthens the conclusions we derive from observations. The impacts of ENSO on SST and SSS are also discussed with, for instance, saltier-than-average and fresher-than-average waters during the 2002-2003 El Nino and 2007-2008 La Nina, respectively. specialized INTERACTION OCEAN ATMOSPHERE TEMPERATURE DE SURFACE SALINITE COURANT GEOSTROPHIQUE ADVECTION MARINE UPWELLING EL NINO PRECIPITATION VENT ESTUAIRE VARIATION MENSUELLE VARIATION SAISONNIERE VARIATION ANNUELLE PACIFIQUE SALOMON BISMARCK PAPOUASIE NOUVELLE GUINEE 032CLIMET 021CLIMAT 119 4 2642-2657 2014 2169-9275 https://www.documentation.ird.fr/hor/fdi:010062177 10.1002/2013JC009733 2169-9275 [F B010062177] https://www.documentation.ird.fr/hor/fdi:010062177 https://www.documentation.ird.fr/intranet/publi/depot/2014-06-18/010062177.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2014-06-18 2014-12-23 fdi:010062177 fre