Dependence of satellite derived Adriatic Sea temperature on atmospheric and marine effects and characteristics of the instruments

Tomažić, Igor (2010) Dependence of satellite derived Adriatic Sea temperature on atmospheric and marine effects and characteristics of the instruments. Doctoral thesis, Faculty of Science > Department of Geology.

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Abstract

Satellite-derived sea surface temperature (SST) is an important parameter in oceanography, meteorology and climatology. Comparisons of satellite and in situ measurements for different areas and periods, as well as of different sensors, still exhibit considerable mutual differences. The goal of this thesis is derivation of algorithms and coefficients of improved precision and accuracy for satellite estimate of Adriatic Sea surface temperature, based on analysis of the atmospheric and marine influences as well as characteristics of the instruments. To reach this goal all available satellite SST data (AATSR, AVHRR, MODIS ) for the period between 2003 and 2008 and in situ SST data from drifters (2003), a platform (2004) and ships (2003 and 2004) were used together with auxiliary satellite data (wind, water vapour, aerosol). Atmospheric profiles of temperature and water vapour from ECMWF ERA-40 project were used for deriving simulated AVHRR brightness temperatures using atmospheric radiative transfer model (RTTOV). Regression of observed and simulated brightness temperatures against reference SST measurements (in situ, AATSR, model) provided new coefficients and algorithms for the Adriatic SST estimates. It was shown that monthly variable coefficients for AVHRR SST algorithm based on AATSR measurements provided highest accuracy and precision. This algorithm was therefore used in deriving monthly SST fields needed to perform spatio-temporal analysis (EOF) of Adriatic SST in the period between 2003 and 2008.

Item Type: Thesis (Doctoral thesis)
Keywords: sea surface temperature; SST; Adriatic; satellite oceanography; NOAA; AVHRR; MODIS; AATSR; RTTOV; ERA-40; algorithms; EOF; wind; water vapour; aerosol
Supervisor: Kuzmić, Milivoj
Date: 2010
Number of Pages: 148
Subjects: NATURAL SCIENCES > Geology
NATURAL SCIENCES > Geophysics
NATURAL SCIENCES > Interdisciplinary Natural Sciences > Marine Science
Divisions: Faculty of Science > Department of Geology
Depositing User: Sonja Borak
Date Deposited: 28 Jan 2014 12:15
Last Modified: 28 Jan 2014 12:15
URI: http://digre.pmf.unizg.hr/id/eprint/272

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