Indo-Pacific upper ocean thermohaline interannual variability

Nicolas Kolodziejczyk, LOPS (UBO), Plouzane, France, William Llovel, NASA Jet Propulsion Laboratory, Pasadena, CA, United States, Fabienne Gaillard, IFREMER, Plouzane, France and Laurent Terray, CERFACS European Centre for Research and Advanced Training in Scientific Computation, Toulouse Cedex 01, France
Abstract:
Interannual variability of thermohaline content is estimated in global ocean from various Argo data gridded products from 2002 to 2015 (ISAS, MetOffice, IPRC, JAMSTEC, NOAA and SCRIPPS). Difference among products is evaluated and discussed to represent the distribution of Heat and Salt Content and Sea Level Height at interannual to decadal time scales. Horizontal and vertical distributions are investigated in term of vertical and isopycnal coordinates. This work focuses on the Indo-Pacific Ocean where strong decadal trends have been recently found, the so-called 'hiatus'; and strong interannual variability is observed due to a series of ENSO events since 2009. Decomposition in heaving and spice part of thermohaline signal is performed in order to determine the mechanism involved to explain the interannual variability of thermohaline budget.
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