File(s) under permanent embargo
Development of a method for mapping monthly average hourly diffuse erythemal ultraviolet radiation
journal contribution
posted on 2023-05-19, 06:56 authored by Choosri, P, Janjai, S, Manuel NunezManuel Nunez, Buntoung, S, Chanalert, WIn 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.
History
Publication title
Journal of Atmospheric and Solar-Terrestrial PhysicsVolume
161Pagination
19-27ISSN
1364-6826Department/School
School of Geography, Planning and Spatial SciencesPublisher
Pergamon-Elsevier Science LtdPlace of publication
The Boulevard, Langford Lane, Kidlington, Oxford, England, Ox5 1GbRights statement
Copyright 2017 Elsevier Ltd.Repository Status
- Restricted