PERBANDINGAN DATA ATMOSFER-LAUT HASIL PENGUKURAN SATELIT WINDSAT DAN RAMA BUOY DI SEPANJANG EKUATOR SAMUDERA INDIA

AGUSTIN, AYU and Iskandar, Iskhaq and Mardiansyah, Wijaya (2016) PERBANDINGAN DATA ATMOSFER-LAUT HASIL PENGUKURAN SATELIT WINDSAT DAN RAMA BUOY DI SEPANJANG EKUATOR SAMUDERA INDIA. Undergraduate thesis, Sriwijaya University.

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Abstract

Ocean-atmosphere data from the Research Moored Array for African–Asian–Australian Monsoon Analysis and Prediction (RAMA) buoys deployed along the equatorial Indian Ocean were used for validating the ocean-atmosphere data recorded by the WindSat satellite. Three RAMA buoys mounted at 67ºE, 80.5ºE and 90ºE along the equator were used to evaluate the sea surface temperature (SST), wind speeds and precipitation obtained by the WindSat satellite during 2013 – 2015, except for precipitation in the eastern equatorial Indian Ocean (2006 – 2009). The SST from WindSat shows significant correlation with that from RAMA buoy, with coefficient correlations of 0.95, 0.88 and 0.83 in each RAMA buoys, respectively. The root mean square errors (RMSEs) of the WindSat SST relative to RAMA buoy data were 0.28, 0.29 and 0.32 ºC, respectively. in this study. The quality performances of the WindSat wind speed were also satisfactory, with coefficient correlation of 0.64, 0.7 and 0.58 in each RAMA buoy, respectively. The corresponding RMSEs of the wind speeds were 1.46, 1.37 and 1.63 m s-1, respectively. Meanwhile, the WindSat precipitations reveal weak correlation with RAMA buoy data, in particular in the eastern equatorial Indian Ocean. The coefficient correlations in each RAMA buoys were 0.41, 0.27 and 0.2, respectively. The corresponding RMSEs of the precipitation were 0.61, 0.52 and 1.18 mm/day, respectively. After have done correlation and analysis toward measurement errors, overall the WindSat satellite data for each measurement parameters can be used to replace in-situ observation data.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	precipitation, RAMA buoys, sea surface temperature, WindSat satellite, wind speed.
Subjects:	Q Science > QC Physics > QC170-197 Atomic physics. Constitution and properties of matter. Including molecular physics, relativity, quantum theory, and > QC173.4.I57 Interfaces (Physical sciences) -- Mathematics. Crystallization -- Mathematical models. Mathematical physics. Q Science > QC Physics > QC801-809 Geophysics. Cosmic physics
Divisions:	08-Faculty of Mathematics and Natural Science > 45201-Physics (S1)
Depositing User:	Mrs Dies Meirita Sari
Date Deposited:	09 Dec 2019 03:39
Last Modified:	09 Dec 2019 03:39
URI:	http://repository.unsri.ac.id/id/eprint/20670

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