FN Archimer Export Format
PT J
TI Improved electromagnetic bias theory
BT 
AF ELFOUHAILY, T
   THOMPSON, DR
   CHAPRON, Bertrand
   VANDEMARK, D
AS 1:;2:;3:;4:;
FF 1:;2:;3:PDG-DRO-DOPS-LOS;4:;
C1 Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA.
   IFREMER, Ctr Brest, Dept Oceanog Spatiale, F-29280 Plouzane, France.
   NASA, Goddard Space Flight Ctr, Lab Hydrospher Proc, Wallops Island, VA 23337 USA.
C2 JOHNS HOPKINS UNIV, USA
   IFREMER, FRANCE
   NASA, USA
SI BREST
SE PDG-DRO-DOPS-LOS
IN WOS Ifremer jusqu'en 2018
IF 2.68
TC 34
UR https://archimer.ifremer.fr/doc/00000/10585/9395.pdf
LA English
DT Article
AB In this paper we describe modifications to a previous theory for the altimeter electromagnetic bias (EM bias) of Srokosz [1986]. A major correction introduces a scaling of Srokosz's model by nonnegligible dimensionless ratios that depend on the slope variance of both long and short waves. With these modifications the EM bias is no longer simply a function of the cross skewness between surface elevation and slope but now depends on the variance ratios that represent the modulation between short and long waves, Inclusion of these ratios can reduce previous EM bias estimates by as much as 50%. Different directions for the longwave and shortwave field are also accounted for in the two-dimensional development of our approach. A radar frequency dependence consistent with observation is also predicted by the new model. Derivation extending our development to the next higher order in wave statistics is also presented and discussed.
PY 2000
SO Journal Of Geophysical Research Oceans
SN 0148-0227
PU Amer Geophysical Union
VL 105
IS C1
UT 000084802700022
BP 1299
EP 1310
ID 10585
ER

EF