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A technique for mapping global illuminance from satellite data
Citation
Janjai, S and Tohsing, K and Nunez, M and Laksanaboonsong, J, A technique for mapping global illuminance from satellite data, Solar Energy, 82, (6) pp. 543-555. ISSN 0038-092X (2008) [Refereed Article]
DOI: doi:10.1016/j.solener.2007.11.003
Abstract
A technique for mapping global illuminance from satellite data was developed. A five-year (1998–2002) climatology of global solar illuminance obtained from this technique is presented for Thailand using hourly GMS-5 satellite data. The technique is based on a radiation budget model which traces solar radiation as it is scattered, absorbed and reflected back to space. The model produces an earth-atmospheric albedo in the satellite spectral window as well as global illuminance at the earth’s surface. The model is tuned using surface illuminance measurements at four stations in Thailand: Chiang Mai (18.78°N, 98.98°E), Ubon Ratchatani (15.25°N, 104.87°E), Songkhla (7.20°N, 100.60 °E) and Nakhon Pathom (13.82°N, 100.04°E). In the mapping process, a satellite earth-atmospheric albedo at any locations yields a cloud-atmospheric albedo in the satellite band, which is then transformed into a cloud-atmospheric albedo in the photopic band. Having obtained the photopic cloud-atmospheric albedo, the model calculates surface illuminance. The model gives a root mean square difference of 8.1% and a mean bias difference of −2.6% when tested against an independent data set. Monthly average maps are presented covering Thailand for local times of 10:30, 12:30 and 14:30.
Item Details
Item Type: | Refereed Article |
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Keywords: | Solar radiation; Daylight; Illuminance; Satellite data; Mapping |
Research Division: | Earth Sciences |
Research Group: | Climate change science |
Research Field: | Climatology |
Objective Division: | Environmental Management |
Objective Group: | Air quality, atmosphere and weather |
Objective Field: | Air quality, atmosphere and weather not elsewhere classified |
UTAS Author: | Nunez, M (Dr Manuel Nunez) |
ID Code: | 55087 |
Year Published: | 2008 |
Web of Science® Times Cited: | 11 |
Deposited By: | Geography and Environmental Studies |
Deposited On: | 2009-03-05 |
Last Modified: | 2009-03-18 |
Downloads: | 0 |
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