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A technique for mapping downward longwave radiation using satellite and ground-based data in the tropics
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Abstract
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.
| Item Type: | Article |
|---|---|
| Authors/Creators: | Masiri, IO and Janjai, S and Nunez, M and Anusasananan, P |
| Keywords: | long wave radiation, satellite data, tropics |
| Journal or Publication Title: | Renewable Energy |
| Publisher: | Pergamon-Elsevier Science Ltd |
| ISSN: | 0960-1481 |
| DOI / ID Number: | https://doi.org/10.1016/j.renene.2016.11.018 |
| Copyright Information: | Copyright 2016 Elsevier Ltd. |
| Related URLs: | |
| Item Statistics: | View statistics for this item |
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