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Seasonal and Interannual Variability of Tropical Diurnal Warming of Sea Surface Temperatures

A method for determining the diurnal sea surface temperature (SST) cycle through satellite data has previously been developed by Clayson and Curry (1996). In their work they applied a parameterized equation from Webster et al. (1996) that uses the magnitude of peak solar insolation, the cumulative amount of daily precipitation, and average daily wind speed to compute the diurnal warming of SSTs. This parameterization has been applied to data obtained by the International Satellite Cloud Climatology Project (ISCCP) and Special Sensor Microwave/Imager (SSM/I) data to produce a daily diurnal warming database for the global tropics during the years 1996-2000. Precipitation values were not yet available and were found to play a smaller role in diurnal warming, so they were not used in this study. Daily files of diurnal warming (dSST) were created at a spatial resolution of 0.25 deg. longitude x 0.25 deg. latitude. This study examines the spatial and temporal variability of dSST over the global tropics by examining averages of these values seasonally and year to year and by conducting an EOF analysis of the data for the tropical Atlantic, Indian, and Pacific Oceans. Results show that different atmospheric processes influence dSST for each tropical ocean basin. Also, dSST is shown to be driven by surface fluxes and not the underlying ocean characteristics. However, diurnal warming can affect the depth of mixing and entrainment cooling in the upper ocean by influencing the oceanic stability at the surface. / A Thesis Submitted to the Department of Meteorology in Partial Fulfillment of the
Requirements for the Degree of Master of Science. / Spring Semester, 2005. / March 30, 2005. / Diurnal Warming, Sea Surface Temperature, Satellite Observation / Includes bibliographical references. / Carol Anne Clayson, Professor Directing Thesis; Mark Bourassa, Committee Member; T. N. Krishnamurti, Committee Member.

Identiferoai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_175758
ContributorsWeitlich, Derrick (authoraut), Clayson, Carol Anne (professor directing thesis), Bourassa, Mark (committee member), Krishnamurti, T. N. (committee member), Department of Earth, Ocean and Atmospheric Sciences (degree granting department), Florida State University (degree granting institution)
PublisherFlorida State University, Florida State University
Source SetsFlorida State University
LanguageEnglish, English
Detected LanguageEnglish
TypeText, text
Format1 online resource, computer, application/pdf
RightsThis Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). The copyright in theses and dissertations completed at Florida State University is held by the students who author them.

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