High frequency radar data assimilation in the monterey bay

I. Shulman, Chau-Ron Wu, J. D. Paduan, J. K. Lewis, L. K. Rosenfeld, S. R. Ramp

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Surface current maps derived from High Frequency (HF) Doppler radar observations provide valuable information for numerical ocean models' validation, as well as for improvement of model nowcasts and forecasts. Assimilation of HF radar (CODAR)-derived surface currents into the fine-resolution numerical ocean model of the Monterey Bay Area is discussed in this paper. Effective data assimilation techniques for surface information rely on methods for projecting this information into the interior of the ocean for improving dynamical forecasts of the currents and hydrographic structure of the ocean's interior. For this reason, special attention is devoted in this paper to the sub-surface projection of CODAR-derived surface information in three-dimensional data assimilation of surface currents. Different approaches based on the modification of the ICON model surface forcing (wind forcing) as well as direct instantaneous projection of surface information into the subsurface of the model are presented and compared. The significant improvement of correlation between the model and ADCP subsurface currents was achieved when the subsurface projection of the corrections to the model surface currents was based on the Ekman theory.

Original languageEnglish
Title of host publicationEstuarine and Coastal Modeling 2001
PublisherAmerican Society of Civil Engineers (ASCE)
Pages434-446
Number of pages13
ISBN (Print)0784406286, 9780784406281
DOIs
Publication statusPublished - 2002 Jan 1
Event7th International Conference on Estuarine and Coastal Modeling - St. Petersburg, FL, United States
Duration: 2001 Nov 52001 Nov 7

Other

Other7th International Conference on Estuarine and Coastal Modeling
CountryUnited States
CitySt. Petersburg, FL
Period01/11/501/11/7

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ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Modelling and Simulation
  • Geotechnical Engineering and Engineering Geology

Cite this

Shulman, I., Wu, C-R., Paduan, J. D., Lewis, J. K., Rosenfeld, L. K., & Ramp, S. R. (2002). High frequency radar data assimilation in the monterey bay. In Estuarine and Coastal Modeling 2001 (pp. 434-446). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/40628(268)27