Modeling the ratio of photosynthetically active radiation to broadband global solar radiation using ground and satellite-based data in the tropics

Data from four stations in Thailand are used to model the ratio of photosynthetically active radiation (PAR) to broadband global solar radiation. The model expresses the ratio of PAR-to-broadband global solar radiation as a function of cloud index, aerosol optical depth, precipitable water, total oz...

Full description

Saved in:
Bibliographic Details
Published in:Advances in space research 2015-12, Vol.56 (11), p.2356-2364
Main Authors: Janjai, S., Wattan, R., Sripradit, A.
Format: Article
Language:English
Subjects:
Aerosols
Broadband
Clouds
Estimates
Ozone
Photosynthetically active radiation
Ratio
Solar radiation
Stations
Tropics
Variance
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Data from four stations in Thailand are used to model the ratio of photosynthetically active radiation (PAR) to broadband global solar radiation. The model expresses the ratio of PAR-to-broadband global solar radiation as a function of cloud index, aerosol optical depth, precipitable water, total ozone column and solar zenith angle. Data from the MTSAT-1R and OMI/AURA satellites are used to estimate the cloud index and total ozone column, respectively at each of the four stations, while aerosol optical depth and precipitable water are retrieved from Aerosol Robotic Network (AERONET) sunphotometer measurements, also available at each station. When tested against hourly measurements, the model exhibits a coefficient of variance (R2) equal to or better than 0.96, and root mean square difference (RMSD) in the range of 7.3–7.9% and mean bias difference (MBD) of −4.5% to 3.5%. The model compares favorably with other existing models.
ISSN:0273-1177
1879-1948
DOI:10.1016/j.asr.2015.09.020