Estimating One-Minute Rain Rate Distributions in the Tropics From TRMM Satellite Data (October 2017)

Internationally recognized prognostic models of rain fade on terrestrial and Earth-space extremely high frequency (EHF) links rely fundamentally on distributions of 1-min rain rates. In Rec. ITU-R P.837-6, these distributions are estimated from the data provided by Numerical Weather Products (NWPs)....

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Bibliographic Details
Published in:IEEE journal of selected topics in applied earth observations and remote sensing 2018-10, Vol.11 (10), p.3660-3667
Main Authors: Rimven, Geraldine Rangmoen, Paulson, Kevin S., Bellerby, Timothy
Format: Article
Language:English
Subjects:
Atmospheric precipitations
Data
Earth
Extraterrestrial measurements
Extremely high frequencies
High frequency
Link budget
Mathematical models
Meteorological satellites
microwave
Orbits
propagation
Radar
Radar data
Rain
rain fade
Rainfall measurement
Regions
satellite data
Satellites
Spaceborne radar
spectrum planning
Telecommunications
Terrestrial environments
TRMM satellite
Tropical climate
Tropical environments
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Summary:Internationally recognized prognostic models of rain fade on terrestrial and Earth-space extremely high frequency (EHF) links rely fundamentally on distributions of 1-min rain rates. In Rec. ITU-R P.837-6, these distributions are estimated from the data provided by Numerical Weather Products (NWPs). NWP yields rain accumulations over regions typically larger than 100 km across and over intervals of 6 h. Over the tropics, the Tropical Rain Measuring Mission (TRMM) satellite data yield instantaneous rain rates over regions 5 km across. This paper uses TRMM data to estimate rain rate distributions for telecommunications regulation over the tropics. Rain rate distributions are calculated for each 1° square between 35° south to 35° north. These distributions of instantaneous rain rates over 5 km squares are transformed to distributions over 1 km squares using a correction calculated from U.K. Nimrod radar data. Results are compared to rain distributions in DBSG3, the database of ITU-R Study Group 3. A comparison with the new Rec. ITU-R P.837-7 is also presented. A table of 0.01% exceeded rain rates over the tropics is provided as associated data.
ISSN:1939-1404
2151-1535
DOI:10.1109/JSTARS.2018.2869322