Ocean model validation of the NASA scatterometer winds
- 15 May 1999
- journal article
- Published by American Geophysical Union (AGU) in Journal of Geophysical Research: Oceans
- Vol. 104 (C5) , 11359-11373
- https://doi.org/10.1029/1998jc900105
Abstract
The suitability of basin‐scale, satellite‐based scatterometer winds for forcing of numerical ocean models is examined using a reduced gravity, primitive equation model of the tropical Pacific Ocean. Three surface forcing fields are validated in a comparison of upper layer thickness (ULT) from the ocean model with observed sea level data. The forcing fields are the Florida State University observed winds, winds derived from the NASA Scatterometer (NSCAT), and stresses derived directly from NSCAT. The sea level data sets are the World Ocean Circulation Experiment “fast” sea level data set from island measurements and sea level anomalies from TOPEX/POSEIDON. Results of this comparison demonstrate that while the three model results are qualitatively similar, the results are quantitatively better when forcing with the NSCAT derived stresses. This is particularly true in the eastern tropical Pacific and in convergent zones where forcing with the NSCAT stresses can lead to large differences in ULT (>40 m) compared with results from the other two wind products.Keywords
This publication has 37 references indexed in Scilit:
- The impact of NSCAT winds on predicting the 1997/1998 El Niño: A case study with the Lamont‐Doherty Earth Observatory modelJournal of Geophysical Research: Oceans, 1999
- Katabatic wind fields in coastal areas studied by ERS‐1 synthetic aperture radar imagery and numerical modelingJournal of Geophysical Research: Oceans, 1998
- NASA scatterometer provides global ocean‐surface wind fields with more structures than numerical weather predictionGeophysical Research Letters, 1998
- Wind observations from new satellite and research vessels agreeEos, 1997
- Inertial dissipation method applied to derive turbulent fluxes over the ocean during the Surface of the Ocean, Fluxes and Interactions with the Atmosphere/Atlantic Stratocumulus Transition Experiment (SOFIA/ASTEX) and Structure des Echanges Mer‐Atmosphere, Proprietes des Heterogeneites Oceaniques: Recherche Experimentale (SEMAPHORE) experiments with low to moderate wind speedsJournal of Geophysical Research: Oceans, 1997
- The sensitivity of a global ocean model to wind forcing: A test using sea level and wind observations from satellites and operational wind analysisGeophysical Research Letters, 1997
- The General Circulation Responses of High-Resolution North Atlantic Ocean Models to Synthetic Scatterometer WindsJournal of Physical Oceanography, 1996
- Responses of the tropical Pacific to wind forcing as observed by spaceborne sensors and simulated by an ocean general circulation modelJournal of Geophysical Research: Oceans, 1996
- Tower‐based measurements of normalized radar cross section from Lake Ontario: Evidence of wind stress dependenceJournal of Geophysical Research: Oceans, 1995
- The Impact ofSeasat-AScatterometer Data on High-Resolution Analyses and Forecasts: The Development of theQE IIStormMonthly Weather Review, 1991