2020-01-30 16:27:26.0 [sritz] update Definition (PR is the first spaceborne instrument designed to provide 3-D maps of storm structure. The measurements yield invaluable information on the intensity and distribution of the rain, the rain type, the storm depth and the height at which the snow melts into rain. The estimates of the heat released into the atmosphere at different heights based on these measurements can be used to improve models of the global atmospheric circulation. PR has a horizontal resolution at the ground of about 4 km and a swath width of 220 km. One of its most important features is its ability to provide vertical profiles of the rain and snow from the surface to a height of about 20 km. PR is able to detect fairly light rain rates down to about 0.7 mm/hr. For intense rain rates, where the attenuation effects can be strong, new methods of data processing have been developed that help correct for this effect. PR is able to separate out rain echoes for vertical sample sizes of about 250 m when looking straight down. NASA Earth Science Reference Handbook [ Mission: TRMM ] More Information: https://pmm.nasa.gov/TRMM/PR Group: Instrument_Details Entry_ID: PR Group: Instrument_Identification Instrument_Category: Earth Remote Sensing Instruments Instrument_Class: Active Remote Sensing Instrument_Type: Profilers/Sounders Instrument_Subtype: Radar Sounders Short_Name: PR Long_Name: TRMM Precipitation Radar End_Group Group: Instrument_Associated_Sensors Short_Name: PR End_Group Group: Associated_Platforms Short_Name: TRMM End_Group Group: Spectral_Frequency_Information Wavelength_Keyword: Radio Spectral_Frequency_Coverage_Range: 13.8 GHz horizontal polarization; 220-km swath. Spectral_Frequency_Resolution: 4.3 Km horizontal resolution instantaneous field-of-view (nadir), 0.25 km vertical resolution (nadir) End_Group Online_Resource: https://www.eorc.jaxa.jp/TRMM/channel/earth/index_e.htm Online_Resource: https://www.eorc.jaxa.jp/TRMM/channel/instruments/index_e.htm Online_Resource: https://trmm.gsfc.nasa.gov/overview_dir/pr.html Online_Resource: https://pmm.nasa.gov/TRMM/PR Sample_Image: https://www.eorc.jaxa.jp/TRMM/channel/instruments/pr/image/pr2.jpg Creation_Date: 2007-05-08 Group: Instrument_Logistics Data_Rate: 93.2 Kbps Instrument_Owner: JAPAN/JAXA Instrument_Owner: Communications Research Laboratory - Japan End_Group End_Group);
2020-01-30 16:25:12.0 [sritz] update Definition (PR is the first spaceborne instrument designed to provide 3-D maps of storm structure. The measurements yield invaluable information on the intensity and distribution of the rain, the rain type, the storm depth and the height at which the snow melts into rain. The estimates of the heat released into the atmosphere at different heights based on these measurements can be used to improve models of the global atmospheric circulation. PR has a horizontal resolution at the ground of about 4 km and a swath width of 220 km. One of its most important features is its ability to provide vertical profiles of the rain and snow from the surface to a height of about 20 km. PR is able to detect fairly light rain rates down to about 0.7 mm/hr. For intense rain rates, where the attenuation effects can be strong, new methods of data processing have been developed that help correct for this effect. PR is able to separate out rain echoes for vertical sample sizes of about 250 m when looking straight down. NASA Earth Science Reference Handbook [ Mission: TRMM ] Group: Instrument_Details Entry_ID: PR Group: Instrument_Identification Instrument_Category: Earth Remote Sensing Instruments Instrument_Class: Active Remote Sensing Instrument_Type: Profilers/Sounders Instrument_Subtype: Radar Sounders Short_Name: PR Long_Name: TRMM Precipitation Radar End_Group Group: Instrument_Associated_Sensors Short_Name: PR End_Group Group: Associated_Platforms Short_Name: TRMM End_Group Group: Spectral_Frequency_Information Wavelength_Keyword: Radio Spectral_Frequency_Coverage_Range: 13.8 GHz horizontal polarization; 220-km swath. Spectral_Frequency_Resolution: 4.3 Km horizontal resolution instantaneous field-of-view (nadir), 0.25 km vertical resolution (nadir) End_Group Online_Resource: https://www.eorc.jaxa.jp/TRMM/channel/earth/index_e.htm Online_Resource: https://www.eorc.jaxa.jp/TRMM/channel/instruments/index_e.htm Online_Resource: https://trmm.gsfc.nasa.gov/overview_dir/pr.html Online_Resource: https://pmm.nasa.gov/TRMM/PR Sample_Image: https://www.eorc.jaxa.jp/TRMM/channel/instruments/pr/image/pr2.jpg Creation_Date: 2007-05-08 Group: Instrument_Logistics Data_Rate: 93.2 Kbps Instrument_Owner: JAPAN/JAXA Instrument_Owner: Communications Research Laboratory - Japan End_Group End_Group); update Resource (image); update Resource (https://www.eorc.jaxa.jp/TRMM/channel/instruments/pr/image/pr2.jpg);
PR is the first spaceborne instrument designed to provide 3-D maps of storm structure. The measurements yield invaluable information on the intensity and distribution of the rain, the rain type, the storm depth and the height at which the snow melts into rain. The estimates of the heat released into the atmosphere at different heights based on these measurements can be used to improve models of the global atmospheric circulation. PR has a horizontal resolution at the ground of about 4 km and a swath width of 220 km. One of its most important features is its ability to provide vertical profiles of the rain and snow from the surface to a height of about 20 km. PR is able to detect fairly light rain rates down to about 0.7 mm/hr. For intense rain rates, where the attenuation effects can be strong, new methods of data processing have been developed that help correct for this effect. PR is able to separate out rain echoes for vertical sample sizes of about 250 m when looking straight down. NASA Earth Science Reference Handbook [ Mission: TRMM ] More Information: https://pmm.nasa.gov/TRMM/PR Group: Instrument_Details Entry_ID: PR Group: Instrument_Identification Instrument_Category: Earth Remote Sensing Instruments Instrument_Class: Active Remote Sensing Instrument_Type: Profilers/Sounders Instrument_Subtype: Radar Sounders Short_Name: PR Long_Name: TRMM Precipitation Radar End_Group Group: Instrument_Associated_Sensors Short_Name: PR End_Group Group: Associated_Platforms Short_Name: TRMM End_Group Group: Spectral_Frequency_Information Wavelength_Keyword: Radio Spectral_Frequency_Coverage_Range: 13.8 GHz horizontal polarization; 220-km swath. Spectral_Frequency_Resolution: 4.3 Km horizontal resolution instantaneous field-of-view (nadir), 0.25 km vertical resolution (nadir) End_Group Online_Resource: https://www.eorc.jaxa.jp/TRMM/channel/earth/index_e.htm Online_Resource: https://www.eorc.jaxa.jp/TRMM/channel/instruments/index_e.htm Online_Resource: https://trmm.gsfc.nasa.gov/overview_dir/pr.html Online_Resource: https://pmm.nasa.gov/TRMM/PR Sample_Image: https://www.eorc.jaxa.jp/TRMM/channel/instruments/pr/image/pr2.jpg Creation_Date: 2007-05-08 Group: Instrument_Logistics Data_Rate: 93.2 Kbps Instrument_Owner: JAPAN/JAXA Instrument_Owner: Communications Research Laboratory - Japan End_Group End_Group
Radar Sounders