FN Archimer Export Format
PT J
TI How well can we derive Global Ocean Indicators from Argo data?
BT 
AF VON SCHUCKMANN, Karina
   LE TRAON, Pierre-Yves
AS 1:1,2;2:2;
FF 1:;2:PDG-ODE-ADM3;
C1 CNRS, Univ Paris 06, LOCEAN, IPSL, INSU,UMR 7159, F-75252 Paris, France.
   IFREMER, Lab Oceanog Spatiale, Plouzane, France.
C2 IPSL, FRANCE
   IFREMER, FRANCE
   CNRS, FRANCE
SI BREST
SE PDG-ODE-LOS
   PDG-ODE-ADM3
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 2.293
TC 62
UR https://archimer.ifremer.fr/doc/00072/18332/15899.pdf
LA English
DT Article
AB Argo deployments began in the year 2000 and by November 2007, the array reached its initial goal of 3000 floats operating worldwide. In this study, Argo temperature and salinity measurements during the period 2005 to 2010 are used to estimate Global Ocean Indicators (GOIs) such as global ocean heat content (GOHC), global ocean freshwater content (GOFC) and global steric sea level (GSSL). We developed a method based on a simple box averaging scheme using a weighted mean. Uncertainties due to data processing methods and choice of climatology are estimated. This method is easy to implement and run and can be used to set up a routine monitoring of the global ocean. Over the six year time period, trends of GOHC and GSSL are 0.54 +/- 0.1W m(-2) and 0.75 +/- 0.15mm yr(-1), respectively. The trend of GOFC is barely significant. Results show that there is significant interannual variability at global scale, especially for GOFC. Annual mean GOIs from the today's Argo sampling can be derived with an accuracy of +/- 0.11 cm for GSSL, +/- 0.22 x 10(8) J m(-2) for GOHC, and +/- 700 km(3) for GOFC. Long-term trends (15 yr) of GOIs based on the complete Argo sampling for the upper 1500 m depth can be estimated with an accuracy of +/- 0.04mm yr(-1) for GSSL, +/- 0.02W m(-2) for GOHC and +/- 20 km(3) yr(-1) for GOFC - under the assumption that no systematic errors remain in the observing system.
PY 2011
SO Ocean Science
SN 1812-0784
PU Copernicus Gesellschaft Mbh
VL 7
IS 6
UT 000298491300005
BP 783
EP 791
DI 10.5194/os-7-783-2011
ID 18332
ER

EF