TY - JOUR
T1 - Estimation of daily solar radiation from sunshine duration in Thailand
AU - Watanabe, Satoshi
AU - Komori, Daisuke
AU - Aoki, Masatoshi
AU - Kim, Wonsik
AU - Boonyawat, Samakkee
AU - Tongdeenok, Piyapong
AU - Prakarnrat, Saman
AU - Baimoung, Somchai
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011
Y1 - 2011
N2 - The empirical relationship between solar radiation and sunshine duration in Thailand is studied in this paper. Although regional long-term regional solar radiation has not yet been measured in Thailand, the data of sunshine duration measurements are available. Hence, measurement of global solar radiation is conducted to find the relationship between daily solar radiation and sunshine duration, which is mostly linear. The distribution of regression coe‰cients is examined and the formula that can be applied in Thailand is estimated. The e‰ciency of the proposed formula is validated through its prediction. The result shows that the accuracy of the country-wide regression equations can be comparable to that constructed at each station. Moreover, it is found that the proposed equations are more e{currency sign}ective from May to November than from December to April. The proposed equations are applied to estimate solar radiation in Thailand and the di{currency sign}erences in their prediction are found in the characteristics of statistical distributions between May-November and December-April.
AB - The empirical relationship between solar radiation and sunshine duration in Thailand is studied in this paper. Although regional long-term regional solar radiation has not yet been measured in Thailand, the data of sunshine duration measurements are available. Hence, measurement of global solar radiation is conducted to find the relationship between daily solar radiation and sunshine duration, which is mostly linear. The distribution of regression coe‰cients is examined and the formula that can be applied in Thailand is estimated. The e‰ciency of the proposed formula is validated through its prediction. The result shows that the accuracy of the country-wide regression equations can be comparable to that constructed at each station. Moreover, it is found that the proposed equations are more e{currency sign}ective from May to November than from December to April. The proposed equations are applied to estimate solar radiation in Thailand and the di{currency sign}erences in their prediction are found in the characteristics of statistical distributions between May-November and December-April.
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U2 - 10.2151/jmsj.2011-A25
DO - 10.2151/jmsj.2011-A25
M3 - Article
AN - SCOPUS:79957737986
VL - 89
SP - 355
EP - 364
JO - Journal of the Meteorological Society of Japan
JF - Journal of the Meteorological Society of Japan
SN - 0026-1165
IS - A
ER -