using MODIS direct-recieving data by AIT/IIS Tokyo-Univ
developed by H. Murakami JAXA/EORC 9 June 2010
Estimation of Photosynthetically available radiation (PAR)
is an essential parameter to estimate the primary production. We expanded the
SeaWiFS PAR algorithm (Frouin et al., 2003) to Terra and Aqua MODIS, and also
over the land. Using TOMS/OMI ozone, aerosol and cloud properties retrieved
simultaneously, we calculated shortwave radiation (SWR) and UV radiance which
can be validated using many ground (the land and ocean) sites, such as AERONET,
CEOP, and TAO/TRITON, BSRN, WOUDC, and so on. The more than ten years time
series of the satellite PAR and SWR showed good agreement with in-situ
observations within about 10-15% (8 days) and 8-12% (monthly) accuracy.
This dataset is one of the JASMES datasets and results from a cooperative research conducted by JAXA and NIES.
MODIS data used in this research was received at Bangkok receiving station with the collaboration work between Institute of Industrial Science, University of Tokyo (IIS/UT) and GeoInformatics Center, Asian Institute of Technology (GIC/AIT).
see 2002-2006 animation of monthly PAR
How to get data:
- daily PAR [Ein/m^2/day] (direct+diffuse solar irradiance in 400nm-700nm)
- daily direct PAR [Ein/m^2/day] (component of direct transmission)
- daily mean shortwave radiation [W/m^2] (solar irradiance in 250nm-2500nm)
- transmittance of instantaneous PAR at noon
- daily mean UVA [W/m^2] (solar irradiance in 315nm-400nm)
- daily mean UVB [W/m^2] (solar irradiance in 280nm-315nm)
- monthly average of direct PAR
- monthly average of daily PAR [Ein/m^2/day]
- monthly average of shortwave radiation [W/m^2]
- monthly average of transmittance of instantaneous PAR at noon
- monthly average of UVA [W/m^2]
- monthly average of UVB [W/m^2]
- JPG image of monthly PAR (MDS*_PAR_le)
Please Acknowledge as following when you write a paper.
"MODIS data provided in this research is received at Bangkok
receiving station with the collaboration work between Institute of Industrial
Science, University of Tokyo (IIS/UT) and GeoInformatics Center, Asian Institute
of Technology (GIC/AIT). The PAR and radiation data is developed in the
collaboration study between JAXA and National Institute for Environmental
- Algorithm and Validation paper: Now
- Original algorithm (Ocean):
R. Frouin, H. Murakami, Estimating photosynthetically available radiation at the ocean sruface from ADEOS-II global imager data, J. Oceanography, 63, 493-503, 2007.
- Application and short description about algorithm:
N. Saigusa, K. Ichii, H. Murakami, R. Hirata, J. Asanuma, H. Den, S.-J. Han, R. Ide, S.-G. Li, T. Ohta, T.Sasai, S.-Q.Wang, G.-R. Yu, Impact of meteorological anomalies in the 2003 summer on gross primary Productivity in East Asia, Biogeosciences, Vol 7,641-655, 2010.
Also, we would appreciate receiving a preprint and/or reprint of those publications utilizing the data for inclusion in the JAXA/GCOM bibliography. These publications should be sent to:
The EORC GCOM Office
Earth Observation Research Center (EORC)
Japan Aerospace Exploration Agency (JAXA)
Tsukuba space center E-2,
2-1-1, Sengen, Tsukuba, Ibaraki 305-8505, Japan
Please contact us for any comments, problems or questions at e-mail address:
1) WebMODIS by Institute of Industrial Science, University of Tokyo, Japan
2) The National Institute for Environmental Studies (NIES)
3) JAXA Satellite Monitoring for Environmental Studies (JAXA/EORC/JASMES)