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Development of a method for mapping monthly average hourly diffuse erythemal ultraviolet radiation

Choosri, P, Janjai, S, Nunez, M, Buntoung, S and Chanalert, W 2017 , 'Development of a method for mapping monthly average hourly diffuse erythemal ultraviolet radiation' , Journal of Atmospheric and Solar-Terrestrial Physics, vol. 161 , pp. 19-27 , doi: 10.1016/j.jastp.2017.06.003.

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Abstract

In this study, a model for calculating monthly average hourly diffuse erythemal solar ultraviolet (EUV) radiation under all sky conditions in Thailand was developed. The model is a function of air mass, aerosol optical depth and satellite-derived cloud index, as these parameters are sensitive to diffuse EUV radiation. Diffuse EUV irradiance were measured using UV-biometers equipped with shade ball during April 2011-March 2014 at four stations in Thailand. Data from these stations were used to formulate the model. The model was validated using an independent dataset (April 2014-March 2016) at the same sites. The modeled diffuse EUV irradiance showed good agreement with that from the ground-based measurements, with root mean square difference (RMSD) of 12.7% and mean bias difference (MBD) of -2.8%. The use of satellite data provided a simple and practical method to calculate monthly average hourly diffuse EUV irradiance over Thailand. Spatial monthly distributions are shown as maps.

Item Type: Article
Authors/Creators:Choosri, P and Janjai, S and Nunez, M and Buntoung, S and Chanalert, W
Keywords: diffuse radiation, mapping, satellite data, solar ultraviolet radiation
Journal or Publication Title: Journal of Atmospheric and Solar-Terrestrial Physics
Publisher: Pergamon-Elsevier Science Ltd
ISSN: 1364-6826
DOI / ID Number: 10.1016/j.jastp.2017.06.003
Copyright Information:

Copyright 2017 Elsevier Ltd.

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