TY - JOUR
T1 - Investigation of Sheltering Effect on Global Solar Radiation Data Measured by Weather Stations
AU - Chang, Keh Chin
AU - Chen, Hung Hsun
N1 - Publisher Copyright:
© The Authors, published by EDP Sciences, 2019.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/4/17
Y1 - 2019/4/17
N2 - In instalment of pyranometers at the weather stations for measuring global solar radiation, it often cannot avoid appearance of obstacles in their surroundings. Investigation of sheltering effect on measurement of global solar radiation is performed through introducing the shelter view factor. Evaluation of the shelter view factor is made by means of a fisheye-lens photograph together with the calculation method developed by Steyn (1980). Taitung weather station (TWS) is chosen for the study. The shelter view factor for the pyranometer installed at TWS is estimated to be 11.8%. Measurements of global solar radiation are conducted at a place where is located nearby TSW but with the condition of zero shelter view factor. Comparison of the data measured at these two sites indicates 4%-25% deviations of global solar radiation observed in different months of 2017. It suggests a need of the correction to the sheltering effect in the measuring process of global solar radiation at the weather stations except those who are not subject to surrounding obstacles in the sky dome.
AB - In instalment of pyranometers at the weather stations for measuring global solar radiation, it often cannot avoid appearance of obstacles in their surroundings. Investigation of sheltering effect on measurement of global solar radiation is performed through introducing the shelter view factor. Evaluation of the shelter view factor is made by means of a fisheye-lens photograph together with the calculation method developed by Steyn (1980). Taitung weather station (TWS) is chosen for the study. The shelter view factor for the pyranometer installed at TWS is estimated to be 11.8%. Measurements of global solar radiation are conducted at a place where is located nearby TSW but with the condition of zero shelter view factor. Comparison of the data measured at these two sites indicates 4%-25% deviations of global solar radiation observed in different months of 2017. It suggests a need of the correction to the sheltering effect in the measuring process of global solar radiation at the weather stations except those who are not subject to surrounding obstacles in the sky dome.
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U2 - 10.1051/e3sconf/20199302002
DO - 10.1051/e3sconf/20199302002
M3 - Conference article
AN - SCOPUS:85065085753
VL - 93
JO - E3S Web of Conferences
JF - E3S Web of Conferences
SN - 2555-0403
M1 - 02002
T2 - 2018 International Conference on Green Energy and Environment Engineering, CGEEE 2018
Y2 - 27 August 2018 through 29 August 2018
ER -