International Telecommunication Union-Radiocommunication Sector (ITU-R) P.837-6 and P.837-7 performance to estimate Indonesian rainfall
Creators
- 1. Department of Physics, University of Andalas, Indonesia
- 2. Research Institute for Sustainable Humanosphere, Kyoto University, Japan
- 3. Remote Sensing Laboratory, Interdisciplinary Faculty of Science and Engineering, Shimane University, Japan
- 4. Politecnico di Milano DEIB-Dipartimento di Elettronica, Informazione e Bioingegneria, Italy
- 5. Indonesian Agency for Meteorological, Climatological and Geophysics, Indonesia
- 6. National Institute of Aeronautics and Space, Indonesia
- 7. Centre for Telecommunication Research and Innovation, Fakulti Kejuruteraan Elektronik dan Kejuruteraan Komputer, Universiti Teknikal Malaysia Melaka, Malaysia
Description
This work evaluated the performance of International Telecommunication
Union-Radiocommunication Sector (ITU-R) P.837-6 and P.837-7 models
(Annex 1) to estimate one-minute rainfall rates in Indonesia. In addition
to the default ITU-R P.837-6, the input of ITU-R P.837-6 is also
modified using data which has better spatial resolution, i.e. a combination
of Tropical Rainfall Measuring Mission (TRMM) 3A25 and 3B43
(ITU-R+3A25+3B43), 3B42 and 3B43 (ITU-R+3B42+3B43), Global
Satellite Mapping of Precipitation (ITU-R+GSMaP), and Global
Precipitation Measurement (ITU-R+GPM). Among the five test sites,
the default ITU-R P.837-6 and ITU-R+3A25+3B43 could predict one-minute
rainfall rates at two locations accurately. The ITU-R P.837-7 exhibited
a marginally better performance for sites that had a high percentage of very
heavy rain, particularly at large (1%) and small (0.001%) percentages of time
exceeded. The spatial distribution of rainfall rate produced by ITU-R P.837-7
and ITU-R+3A25+3B43 was closer to the pattern demonstrated by recent
satellite precipitation measurements.
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