A technique for mapping downward longwave radiation using satellite and ground-based data in the tropics
journal contribution
posted on 2023-05-19, 01:02authored byMasiri, I, Janjai, S, Manuel NunezManuel Nunez, Anusasananan, P
This paper presents a technique for mapping monthly average hourly downward longwave (LW↓) irradiance using ground- and satellite-based data. A model relating LW↓ irradiance to a satellite derived-brightness temperature of the earth-atmospheric system, relative humidity and ambient air temperature was formulated. This model was validated against LW↓ irradiance obtained from measurements at 4 sites in the tropics and discrepancy in terms of root mean square errors and mean bias errors was found to be 1.89% and −0.69%, respectively. After the validation, the model was used to calculate monthly average hourly LW↓ irradiance over Thailand and the results were displayed as LW↓ maps. These maps reveal the influence of various factors on LW↓ irradiance.
History
Publication title
Renewable Energy
Volume
103
Pagination
171-179
ISSN
0960-1481
Department/School
School of Geography, Planning and Spatial Sciences
Publisher
Pergamon-Elsevier Science Ltd
Place of publication
The Boulevard, Langford Lane, Kidlington, Oxford, England, Ox5 1Gb