Mapping of cloud cover from satellite data over Thailand

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Published: Aug 31, 2018
DOI: https://doi.org/10.14456/sehs.2018.6
Keywords:
cloud cover model satellite data skyview

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Doojdao Charuchittipan
Department of Physics, Faculty of Science, Silpakorn University, Thailand
Serm Janjai
Department of Physics, Faculty of Science, Silpakorn University, Thailand. Corresponding author's e-mail: serm.janjai@gmail.com
Noppamas Pretummasoot
Department of Physics, Faculty of Science, Silpakorn University, Thailand
Sumaman Buntoung
Department of Physics, Faculty of Science, Silpakorn University, Thailand
Sahussa Peengam
Department of Physics, Faculty of Science, Silpakorn University, Thailand

Abstract

In this study, an empirical model for estimating cloud cover from satellite data was developed. The Skyview instruments were installed at four stations located in Chiang Mai (18.78°N, 98.98°E), Ubon Ratchathani (15.25°N, 104.87°E), Nakhon Pathom (13.82°N, 100.04°E) and Songkhla (7.20°N, 100.60°E) in order to record the images of the sky. A five-year period (2009-2013) of the cloud cover derived from the sky images and cloud index derived from MTSAT–1R satellite data were acquired. Based on these data, a model relating the cloud cover to the cloud index was formulated. To validate its performance, the model was used to calculate cloud cover at the four stations during a two-year period (2014-2015). It was found that the measured and calculated cloud cover data were in reasonable agreement with root mean square differences (RMSD) and mean bias difference (MBD) of 12.9% and 3.5%, respectively. Finally, the model was used to calculate cloud cover over Thailand and the results were shown as maps.

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How to Cite
Charuchittipan, D., Janjai, S., Pretummasoot, N., Buntoung, S., & Peengam, S. (2018). Mapping of cloud cover from satellite data over Thailand. Science, Engineering and Health Studies, 12(2), 69–76. https://doi.org/10.14456/sehs.2018.6
Issue
Volume 12, Number 2 (May - August), 2018
Section
Research Articles

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