Relationship Between Surface Solar Radiation and Meteorological Elements in Jian'ou

Abstract

Abstract:

Based on the data of solar radiation and normal meteorological elements during 2010~2011 in Jian'ou, Fujian Province, the relationship between them was analyzed, then an diurnal forecast model was built by using the solar radiation in 2010 and meteorological data. Finally error analysis was taken on the result. The results are as follows. The solar radiation has a close relationship with temperature, pressure, relative humidity, cloud, surface temperature and duration of sunshine, in which water vapor pressure, relative humidity, precipitation and cloud cover and total exposure are negative correlation, others are positive related. The smallest correlation between normal meteorological elements and total amount of radiation is the wind speed, followed by water vapor pressure, while the biggest one is the sunshine, followed by ground temperature. By using the gradually regression equation established in different seasons and daytime, the hourly and daily contribution factors were found to be different as follows: there are temperatures, relative humidity, ground temperature and solar radiation in spring; ground temperature and sunshine in summer; relative humidity in autumn, winter morning total low cloudiness, ground temperature and sunshine in winter are the main contribution factors to the total irradiation volume, while the temperature at midday and nightfall, relative humidity, ground temperature and sunshine are main contribution factors to the total irradiation volume. The forecast results indicate that: the error between forecast value and actual value are relatively stable, which maintained between 10%~45%. The error value is the smallest in summer, followed by autumn and spring, and the biggest in winter. The forecast effect is better at midday than in the morning and evening.

Key words: meteorological elements, gradually regression equation, solar radiation

CLC Number:

P422.351

ZHANG Gui-Rong, CAO Xi, WANG Yang-Juan, CHU Li-Juan. Relationship Between Surface Solar Radiation and Meteorological Elements in Jian'ou[J]. Journal of Atmospheric and Environmental Optics, 2013, 8(3): 169-178.

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Relationship Between Surface Solar Radiation and Meteorological Elements in Jian'ou

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