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| Titel |
Japan's field experiment plan for GPM DPR algorithm development |
| VerfasserIn |
Kenji Nakamura, Shuji Shimizu, Katsuhiro Nakagawa, Horoshi Hanado |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250034830
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| Zusammenfassung |
| Field experiments for the GPM dual-frequency radar (DPR) algorithm development are described. The parameters which should be measured in the ground experiments depend on the DPR algorithm. For the liquid precipitation, raindrop size distribution is the primary parameter to be measured. For the dry snow region, another parameter of the snow particle density should be measured. For the wet snow or melting layer region, other parameters, such as the melting ratio should be measured. The dual Ka-band radar system which Japan Aerospace Exploration Agency (JAXA) is now developing will be a powerful tool to measure the parameters or the proxies of the parameters. The dual Ka-radar system can measure both the specific attenuation and the equivalent radar reflectivity at Ka-band. Using the dual Ka-radar system along with other instruments, such as a polarimetric precipitation radar, a windprofiler radar, ground-based rain measurement systems, the uncertainties of the parameters in the DPR algorithm can be reduced. The verification of improvement of rain retrieval with the DPR algorithm is also included as an objective. The planned field experiments include: (1) the polarimetric Doppler radar observation at the Okinawa Subtropical Environment Remote Sensing Center, the National Institute of Information and Communications Technology (NICT), and (2) snow observation with Snow and Ice Research Center, National Research Institute for Earth Science and Disaster Prevention, Kanazawa University and others in Kanazawa City, and Hokkaido University and others in Sapporo City. The experiments also include a melting layer measurement at the slope of Mt. Fuji. |
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