FN Archimer Export Format
PT J
TI Spatial scales of temperature and salinity variability estimated from Argo observations
BT 
AF NINOVE, Floriane
   LE TRAON, Pierre-Yves
   REMY, E.
   GUINEHUT, S.
AS 1:1,2;2:1,2;3:2;4:3;
FF 1:PDG-ODE;2:PDG-ODE-ADM3;3:;4:;
C1 IFREMER, Technopole Brest Iroise, ZI Pointe Diable, F-29280 Plouzane, France.
   Mercator Ocean, F-31520 Ramonville St Agne, France.
   CLS, F-31520 Ramonville St Agne, France.
C2 IFREMER, FRANCE
   MERCATOR OCEAN, FRANCE
   CLS, FRANCE
SI TOULOUSE
   BREST
SE PDG-ODE
   PDG-ODE-ADM3
IN WOS Ifremer jusqu'en 2018
   DOAJ
   copubli-france
IF 2.821
TC 11
UR https://archimer.ifremer.fr/doc/00317/42845/42257.pdf
LA English
DT Article
AB Argo observations from 2005 to 2013 are used to characterize spatial scales of temperature and salinity variations from the surface down to 1300 m. Simulations are first performed to analyze the sensitivity of results to Argo sampling; they show that several years of Argo observations are required to estimate spatial scales of ocean variability over 20 degrees x 20 degrees boxes. Spatial scales are then computed over several large-scale areas. Zonal and meridional spatial scales (L-x and L-y which are zero crossing of covariance functions) vary as expected with latitudes. Scales are of about 100 km at high latitudes and more of 700 km in the Indian and Pacific equatorial-tropical regions. Zonal and meridional scales are similar except in tropical-equatorial regions where zonal scales are much larger (by a factor of 2 to 3) than meridional scales. Spatial scales are the largest close to the surface and have a general tendency for temperature to increase in deeper layers. There are significant differences between temperature and salinity scales, in particular, in the deep ocean. Results are consistent with previous studies based on sparse in situ observations or satellite altimetry. They provide, however, for the first time a global description of temperature and salinity scales of variability and a characterization of their variations according to depths.
PY 2016
SO Ocean Science
SN 1812-0784
PU Copernicus Gesellschaft Mbh
VL 12
IS 1
UT 000369342300001
BP 1
EP 7
DI 10.5194/os-12-1-2016
ID 42845
ER

EF