Rapid marine cyclogenesis forecast sensitivity to high resolution sea surface temperatures during ERICA IOP-5
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Authors
DeCaria, Marcia A.
Subjects
SST resolution
ERICA
Surface fluxes
Rapid cyclogenesis
ERICA
Surface fluxes
Rapid cyclogenesis
Advisors
Pauley, Patricia M.
Date of Issue
1992-12
Date
December 1992
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
The influence of high resolutions sea surface temperatures (SST) on Nested Grid Model (NGM) predictions of rapid marine cyclogenesis is examined. Satellite data provides a gridded SST analysis with a resolution of 50 km. Forecasts using the operational "blended" SST analysis with a neutral stratification assumed in the calculation of surface exchange coefficient over the ocean are compared to forecasts using the high resolution SST analysis with a stability dependent surface exchange coefficient. Further comparison is made to NGM forecasts with no surface fluxes. This study covers the Intensive Observation Period (IOP) 5 of the Experiment on Rapidly Intensifying Cyclones over the Atlantic (ERICA). Results show little sensitivity of central pressure and storm position to the high resolution SSTs. However, differences in mesoscale features are present, primarily surface fluxes, precipitation, and frontal circulations.
Type
Thesis
Description
Series/Report No
Department
Meteorology
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
82 p.
Citation
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.