FN Archimer Export Format PT J TI Validation of Salinity Data from Surface Drifters BT AF REVERDIN, Gilles MORISSET, S. BOUTIN, Jacqueline MARTIN, Nicolas SENA-MARTINS, M. GAILLARD, Fabienne BLOUCH, P. ROLLAND, J. FONT, J. SALVADOR, J. FERNANDEZ, Pili STAMMER, D. AS 1:1;2:1;3:1;4:1;5:2;6:3;7:4;8:4;9:5;10:5;11:5;12:2; FF 1:;2:;3:;4:;5:;6:PDG-ODE-LPO;7:;8:;9:;10:;11:;12:; C1 UMR CNRS UPMC IRD MNHN, LOCEAN IPSL, Paris, France. Univ Hamburg, Ctr Earth Syst Res & Sustainabil, Hamburg, Germany. IFREMER, Lab Phys Oceans, Plouzane, France. Meteo France, Ctr Meteorol Marine, Brest, France. CSIC, Inst Ciencies Mar, Barcelona, Spain. C2 UNIV PARIS 06, FRANCE UNIV HAMBURG, GERMANY IFREMER, FRANCE CNRM, FRANCE CSIC, SPAIN SI AUTRE BREST SE AUTRE PDG-ODE-LPO IN WOS Ifremer jusqu'en 2018 copubli-france copubli-europe IF 1.725 TC 9 UR https://archimer.ifremer.fr/doc/00190/30095/28748.pdf LA English DT Article CR STRASSE BO Thalassa DE ;Surface observations;Surface layer;Data quality control;Buoy observations AB Salinity measurements from 119 surface drifters in 2007-12 were assessed; 80% [Surface Velocity Program with a barometer with a salinity sensor (SVP-BS)] and 75% [SVP with salinity (SVP-S)] of the salinity data were found to be usable, after editing out some spikes. Sudden salinity jumps are found in drifter salinity records that are not always associated with temperature jumps, in particular in the wet tropics. A method is proposed to decide whether and how to correct those jumps, and the uncertainty in the correction applied. Northeast of South America, in a region influenced by the Amazon plume and fresh coastal water, drifter salinity is very variable, but a comparison with data from the Soil Moisture and Ocean Salinity satellite suggests that this variability is usually reasonable. The drifter salinity accuracy is then explored based on comparisons with data from Argo floats and from thermosalinographs (TSGs) of ships of opportunity. SVP-S/SVP-BS drifter records do not usually present significant biases within the first 6 months, but afterward biases sometimes need to be corrected (altogether, 16% of the SVP-BS records). Biases start earlier after 3 months for drifters not protected by antifouling paint. For the few drifters for which large corrections were applied to portions of the record, the accuracy cannot be proven to be better than 0.1 psu, and it cannot be proven to be better than 0.5 psu for data in the largest variability area off northeast South America. Elsewhere, after excluding portions of the records with suspicious salinity jumps or when large corrections were applied, the comparisons rule out average biases in individual drifter salinity record larger than 0.02 psu (midlatitudes) and 0.05 psu (tropics). PY 2014 PD APR SO Journal Of Atmospheric And Oceanic Technology SN 0739-0572 PU Amer Meteorological Soc VL 31 IS 4 UT 000334142400016 BP 967 EP 983 DI 10.1175/JTECH-D-13-00158.1 ID 30095 ER EF