FN Archimer Export Format
PT J
TI Reconstructing Upper Ocean Vertical Velocity Field from Sea Surface Height in the Presence of Unbalanced Motion
BT 
AF Qiu, Bo
   Chen, Shuiming
   Klein, Patrice
   Torres, Hector
   Wang, Jinbo
   Fu, Lee-Lueng
   Menemenlis, Dimitris
AS 1:1;2:1;3:2,3;4:2;5:2;6:2;7:2;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Department of Oceanography, University of Hawaii at Manoa, Honolulu, Hawaii, USA
   Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
   Université de Brest, CNRS, IRD, Ifremer, LOPS, Plouzané, France
C2 UNIV HAWAII MANOA, USA
   JET PROP LAB, USA
   CNRS, FRANCE
UM LOPS
IN WOS Cotutelle UMR
   copubli-int-hors-europe
IF 3.373
TC 41
UR https://archimer.ifremer.fr/doc/00593/70561/68744.pdf
LA English
DT Article
DE ;Eddies;Mesoscale processes;Ocean dynamics;Vertical motion;Altimetry
AB Reconstructability of upper ocean vertical velocity (w) and vorticity (ζ) fields from high-resolution sea surface height (SSH) data is explored using the global 1/48° horizontal-resolution MITgcm output in the context of the forth-coming Surface Water and Ocean Topography (SWOT) mission. By decomposing w with an omega equation of the primitive-equation system and by taking into account the measurement design of the SWOT mission, this study seeks to reconstruct the subinertial, balanced w and ζ signals. By adopting the effective surface quasi-geostrophic (eSQG) framework and applying to the Kuroshio Extension region of the North Pacific, we find that the target and reconstructed fields have a spatial correlation of ~0.7 below the mixed layer for w and 0.7 ~ 0.9 throughout the 1000m upper ocean for ζ in the error-free scenario. By taking the SWOT sampling and measurement errors into account, the spatial correlation is found to decrease to 0.4 ~ 0.6 below the mixed layer for w and 0.6 ~ 0.7 for ζ, respectively. For both w and ζ reconstruction, the degradation due to the SWOT errors is more significant in the surface layer and for smaller-scale signals. The impact of errors lessens with the increasing depth and lengthening horizontal scales. 
PY 2020
PD JAN
SO Journal Of Physical Oceanography
SN 0022-3670
PU American Meteorological Society
VL 50
IS 1
UT 000503487900002
BP 55
EP 79
DI 10.1175/JPO-D-19-0172.1
ID 70561
ER

EF