https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.6 2026-03-19T10:41:57.720Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/platforms/89c509e6-13f6-4d6e-b46c-0479d2c7d88d TRMM Date=2021-11-18 User Id=tstevens Entity=BroaderRelation Operation=DELETE User Note=Move Concepts System Note=delete broader relation Old Value=TRMM [89c509e6-13f6-4d6e-b46c-0479d2c7d88d,826478] - Earth Observation Satellites [3466eed1-2fbb-49bf-ab0b-dc08731d502b,826121] Date=2020-01-02 User Id=sritz Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=The Tropical Rainfall Measuring Mission (or TRMM) is a NASA satellite that provides more information both to test and to improve those models. TRMM is particularly devoted to determining rainfall in the tropics and subtropics of the Earth. These regions make up about two thirds of the total rainfall on Earth and are responsible for driving our weather and climate system. TRMM contributed to a better understanding of where and how much the winds blow, where the clouds form and rain occurs, where floods and droughts will occur, and how the winds drive the ocean currents. TRMM accomplished this not just by providing rainfall data but, more importantly, by providing information on heat released into the atmosphere as part of the process that leads to rain. TRMM was launched on November 27, 1997, on the Japanese H-II vehicle from the Tanegashima Space Center in Tanegashima, Japan. Continuous science data collection began December 8, 1997. Upon completion of the nominal 3-year prime mission, the decision was made to boost the mission from its original altitude of 350km to 402.5km, to reduce fuel consumption and extend the mission life. The TRMM boost was completed August 24, 2001, and the orbit was maintained until 2014, when fuel was depleted and the spacecraft began to descend. Mission operations were terminated in April 2015, the spacecraft re-entered the Earth’s atmosphere and mostly burned up in June 2015. TRMM exceeded its 3-year design goal by collecting 17 years of rainfall data, creating a benchmark rainfall climatology which is used to test, compare and improve global climate models. The TRMM dataset of rain distribution across the tropics has narrowed considerably the range of uncertainty in previous space-based rainfall estimates. The choice of a precessing, low-inclination orbit (35°) enabled the quantification of the diurnal cycle of precipitation and convective intensity over land and ocean tropics-wide on fine scales (0.25°). TRMM products have provided the first comprehensive estimates of how rainfall is directly related to latent heat release in the atmosphere, a key characteristic in understanding the impact of tropical rainfall on the general circulation of the atmosphere. Based on hydrometeor vertical structure information from the TRMM active and passive sensors, TRMM produced climatologies of latent heating profiles for analysis and comparison with global models. In addition, the lightning sensor delivered a detailed global map of lightning distribution, and combined with the rain data, led to quantifying the lightning/convection relation for land and ocean. Launch: Launched: November 27, 1997 Launch Site: Tanegashima Space Center, Japan Orbit: Altitude: 402 km Inclination: 35 degrees Period: 92.6 minutes Non-Sun-Synchronous Vital Statistics: Weight: 3512 kg Power: 1100 watts Design Life: 3 years Instruments: CERES (Clouds and the Earth Radiant Energy System LIS (Lightning Imaging Sensor) TMI (TRMM Microwave Radiometer) PR (RADAR) VIRS (Visible/Infrared Radiometer) Website: http://trmm.gsfc.nasa.gov/ http://nasascience.nasa.gov/missions/trmm [Summary provided by NASA.] Group: Platform_Details Entry_ID: TRMM Group: Platform_Identification Platform_Category: Earth Observation Satellites Short_Name: TRMM Long_Name: Tropical Rainfall Measuring Mission End_Group Group: Synonymous_Platform_Names Short_Name: TRMM End_Group Group: Platform_Associated_Instruments Short_Name: CERES-PFM Short_Name: PR Short_Name: TMI Short_Name: VIRS Short_Name: LIS End_Group Group: Orbit Orbit_Altitude: 402 km Orbit_Inclination: 35 degrees Period: 92.6 minutes Orbit_Type: LEO > Low Earth Orbit > Inclined Non-Polar End_Group Creation_Date: 2007-11-28 Online_Resource: http://trmm.gsfc.nasa.gov/overview_dir/background.html Online_Resource: http://trmm.gsfc.nasa.gov/ Online_Resource: http://nasascience.nasa.gov/missions/trmm Online_Resource: http://pmm.nasa.gov/TRMM Sample_Image: http://trmm.gsfc.nasa.gov/trmm_rain/Events/TRMM_SATELLITE.blurred.medium.jpg Group: Platform_Logistics Launch_Date: 1997-11-27 Launch_Site: Tanegashima Island, Japan Design_Life: 3 YEARS Primary_Sponsor: USA/NASA Primary_Sponsor: JAPAN/JAXA End_Group End_Group New Value=The Tropical Rainfall Measuring Mission (or TRMM) is a NASA satellite that provides more information both to test and to improve those models. TRMM is particularly devoted to determining rainfall in the tropics and subtropics of the Earth. These regions make up about two thirds of the total rainfall on Earth and are responsible for driving our weather and climate system. TRMM contributed to a better understanding of where and how much the winds blow, where the clouds form and rain occurs, where floods and droughts will occur, and how the winds drive the ocean currents. TRMM accomplished this not just by providing rainfall data but, more importantly, by providing information on heat released into the atmosphere as part of the process that leads to rain. TRMM was launched on November 27, 1997, on the Japanese H-II vehicle from the Tanegashima Space Center in Tanegashima, Japan. Continuous science data collection began December 8, 1997. Upon completion of the nominal 3-year prime mission, the decision was made to boost the mission from its original altitude of 350km to 402.5km, to reduce fuel consumption and extend the mission life. The TRMM boost was completed August 24, 2001, and the orbit was maintained until 2014, when fuel was depleted and the spacecraft began to descend. Mission operations were terminated in April 2015, the spacecraft re-entered the Earth’s atmosphere and mostly burned up in June 2015. TRMM exceeded its 3-year design goal by collecting 17 years of rainfall data, creating a benchmark rainfall climatology which is used to test, compare and improve global climate models. The TRMM dataset of rain distribution across the tropics has narrowed considerably the range of uncertainty in previous space-based rainfall estimates. The choice of a precessing, low-inclination orbit (35°) enabled the quantification of the diurnal cycle of precipitation and convective intensity over land and ocean tropics-wide on fine scales (0.25°). TRMM products have provided the first comprehensive estimates of how rainfall is directly related to latent heat release in the atmosphere, a key characteristic in understanding the impact of tropical rainfall on the general circulation of the atmosphere. Based on hydrometeor vertical structure information from the TRMM active and passive sensors, TRMM produced climatologies of latent heating profiles for analysis and comparison with global models. In addition, the lightning sensor delivered a detailed global map of lightning distribution, and combined with the rain data, led to quantifying the lightning/convection relation for land and ocean. Launch: Launched: November 27, 1997 Launch Site: Tanegashima Space Center, Japan Orbit: Altitude: 402 km Inclination: 35 degrees Period: 92.6 minutes Non-Sun-Synchronous Vital Statistics: Weight: 3512 kg Power: 1100 watts Design Life: 3 years Instruments: CERES (Clouds and the Earth Radiant Energy System LIS (Lightning Imaging Sensor) TMI (TRMM Microwave Radiometer) PR (RADAR) VIRS (Visible/Infrared Radiometer) Website: https://pmm.nasa.gov/trmm [Summary provided by NASA.] Group: Platform_Details Entry_ID: TRMM Group: Platform_Identification Platform_Category: Earth Observation Satellites Short_Name: TRMM Long_Name: Tropical Rainfall Measuring Mission End_Group Group: Synonymous_Platform_Names Short_Name: TRMM End_Group Group: Platform_Associated_Instruments Short_Name: CERES-PFM Short_Name: PR Short_Name: TMI Short_Name: VIRS Short_Name: LIS End_Group Group: Orbit Orbit_Altitude: 402 km Orbit_Inclination: 35 degrees Period: 92.6 minutes Orbit_Type: LEO > Low Earth Orbit > Inclined Non-Polar End_Group Creation_Date: 2007-11-28 Online_Resource: https://pmm.nasa.gov/trmm Group: Platform_Logistics Launch_Date: 1997-11-27 Launch_Site: Tanegashima Island, Japan Design_Life: 3 YEARS Primary_Sponsor: USA/NASA Primary_Sponsor: JAPAN/JAXA End_Group End_Group Date=2021-12-15 User Id=sritz Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=The Tropical Rainfall Measuring Mission (or TRMM) is a NASA satellite that provides more information both to test and to improve those models. TRMM is particularly devoted to determining rainfall in the tropics and subtropics of the Earth. These regions make up about two thirds of the total rainfall on Earth and are responsible for driving our weather and climate system. TRMM contributed to a better understanding of where and how much the winds blow, where the clouds form and rain occurs, where floods and droughts will occur, and how the winds drive the ocean currents. TRMM accomplished this not just by providing rainfall data but, more importantly, by providing information on heat released into the atmosphere as part of the process that leads to rain. TRMM was launched on November 27, 1997, on the Japanese H-II vehicle from the Tanegashima Space Center in Tanegashima, Japan. Continuous science data collection began December 8, 1997. Upon completion of the nominal 3-year prime mission, the decision was made to boost the mission from its original altitude of 350km to 402.5km, to reduce fuel consumption and extend the mission life. The TRMM boost was completed August 24, 2001, and the orbit was maintained until 2014, when fuel was depleted and the spacecraft began to descend. Mission operations were terminated in April 2015, the spacecraft re-entered the Earth’s atmosphere and mostly burned up in June 2015. TRMM exceeded its 3-year design goal by collecting 17 years of rainfall data, creating a benchmark rainfall climatology which is used to test, compare and improve global climate models. The TRMM dataset of rain distribution across the tropics has narrowed considerably the range of uncertainty in previous space-based rainfall estimates. The choice of a precessing, low-inclination orbit (35°) enabled the quantification of the diurnal cycle of precipitation and convective intensity over land and ocean tropics-wide on fine scales (0.25°). TRMM products have provided the first comprehensive estimates of how rainfall is directly related to latent heat release in the atmosphere, a key characteristic in understanding the impact of tropical rainfall on the general circulation of the atmosphere. Based on hydrometeor vertical structure information from the TRMM active and passive sensors, TRMM produced climatologies of latent heating profiles for analysis and comparison with global models. In addition, the lightning sensor delivered a detailed global map of lightning distribution, and combined with the rain data, led to quantifying the lightning/convection relation for land and ocean. Launch: Launched: November 27, 1997 Launch Site: Tanegashima Space Center, Japan Orbit: Altitude: 402 km Inclination: 35 degrees Period: 92.6 minutes Non-Sun-Synchronous Vital Statistics: Weight: 3512 kg Power: 1100 watts Design Life: 3 years Instruments: CERES (Clouds and the Earth Radiant Energy System LIS (Lightning Imaging Sensor) TMI (TRMM Microwave Radiometer) PR (RADAR) VIRS (Visible/Infrared Radiometer) Website: https://pmm.nasa.gov/trmm [Summary provided by NASA.] Group: Platform_Details Entry_ID: TRMM Group: Platform_Identification Platform_Category: Earth Observation Satellites Short_Name: TRMM Long_Name: Tropical Rainfall Measuring Mission End_Group Group: Synonymous_Platform_Names Short_Name: TRMM End_Group Group: Platform_Associated_Instruments Short_Name: CERES-PFM Short_Name: PR Short_Name: TMI Short_Name: VIRS Short_Name: LIS End_Group Group: Orbit Orbit_Altitude: 402 km Orbit_Inclination: 35 degrees Period: 92.6 minutes Orbit_Type: LEO > Low Earth Orbit > Inclined Non-Polar End_Group Creation_Date: 2007-11-28 Online_Resource: https://pmm.nasa.gov/trmm Group: Platform_Logistics Launch_Date: 1997-11-27 Launch_Site: Tanegashima Island, Japan Design_Life: 3 YEARS Primary_Sponsor: USA/NASA Primary_Sponsor: JAPAN/JAXA End_Group End_Group New Value=The Tropical Rainfall Measuring Mission (or TRMM) is a NASA satellite that provides more information both to test and to improve those models. TRMM is particularly devoted to determining rainfall in the tropics and subtropics of the Earth. These regions make up about two thirds of the total rainfall on Earth and are responsible for driving our weather and climate system. TRMM contributed to a better understanding of where and how much the winds blow, where the clouds form and rain occurs, where floods and droughts will occur, and how the winds drive the ocean currents. TRMM accomplished this not just by providing rainfall data but, more importantly, by providing information on heat released into the atmosphere as part of the process that leads to rain. TRMM was launched on November 27, 1997, on the Japanese H-II vehicle from the Tanegashima Space Center in Tanegashima, Japan. Continuous science data collection began December 8, 1997. Upon completion of the nominal 3-year prime mission, the decision was made to boost the mission from its original altitude of 350km to 402.5km, to reduce fuel consumption and extend the mission life. The TRMM boost was completed August 24, 2001, and the orbit was maintained until 2014, when fuel was depleted and the spacecraft began to descend. Mission operations were terminated in April 2015, the spacecraft re-entered the Earth’s atmosphere and mostly burned up in June 2015. TRMM exceeded its 3-year design goal by collecting 17 years of rainfall data, creating a benchmark rainfall climatology which is used to test, compare and improve global climate models. The TRMM dataset of rain distribution across the tropics has narrowed considerably the range of uncertainty in previous space-based rainfall estimates. The choice of a precessing, low-inclination orbit (35°) enabled the quantification of the diurnal cycle of precipitation and convective intensity over land and ocean tropics-wide on fine scales (0.25°). TRMM products have provided the first comprehensive estimates of how rainfall is directly related to latent heat release in the atmosphere, a key characteristic in understanding the impact of tropical rainfall on the general circulation of the atmosphere. Based on hydrometeor vertical structure information from the TRMM active and passive sensors, TRMM produced climatologies of latent heating profiles for analysis and comparison with global models. In addition, the lightning sensor delivered a detailed global map of lightning distribution, and combined with the rain data, led to quantifying the lightning/convection relation for land and ocean. Launch: Launched: November 27, 1997 Launch Site: Tanegashima Space Center, Japan Orbit: Altitude: 402 km Inclination: 35 degrees Period: 92.6 minutes Non-Sun-Synchronous Vital Statistics: Weight: 3512 kg Power: 1100 watts Design Life: 3 years Instruments: CERES (Clouds and the Earth Radiant Energy System LIS (Lightning Imaging Sensor) TMI (TRMM Microwave Radiometer) PR (RADAR) VIRS (Visible/Infrared Radiometer) Website: https://gpm.nasa.gov/missions/trmm [Summary provided by NASA.] Group: Platform_Details Entry_ID: TRMM Group: Platform_Identification Platform_Category: Earth Observation Satellites Short_Name: TRMM Long_Name: Tropical Rainfall Measuring Mission End_Group Group: Synonymous_Platform_Names Short_Name: TRMM End_Group Group: Platform_Associated_Instruments Short_Name: CERES-PFM Short_Name: PR Short_Name: TMI Short_Name: VIRS Short_Name: LIS End_Group Group: Orbit Orbit_Altitude: 402 km Orbit_Inclination: 35 degrees Period: 92.6 minutes Orbit_Type: LEO > Low Earth Orbit > Inclined Non-Polar End_Group Creation_Date: 2007-11-28 Online_Resource: https://gpm.nasa.gov/missions/trmm Group: Platform_Logistics Launch_Date: 1997-11-27 Launch_Site: Tanegashima Island, Japan Design_Life: 3 YEARS Primary_Sponsor: USA/NASA Primary_Sponsor: JAPAN/JAXA End_Group End_Group Date=2021-11-30 User Id=tstevens Entity=BroaderRelation Operation=DELETE User Note=Move Concepts System Note=delete broader relation Old Value=TRMM [89c509e6-13f6-4d6e-b46c-0479d2c7d88d,826478] - Space-based Platforms [b39a69b4-c3b9-4a94-b296-bbbbe5e4c847,835875] Date=2021-12-15 User Id=sritz Entity=Definition Operation=UPDATE Field=reference System Note=update Definition Old Value=https://pmm.nasa.gov/trmm New Value=https://gpm.nasa.gov/missions/trmm Date=2020-10-05 User Id=sritz Entity=Definition Operation=UPDATE Field=reference System Note=update Definition New Value=https://pmm.nasa.gov/trmm Date=2020-01-02 User Id=sritz Entity=Resource Operation=DELETE System Note=delete Resource Old Value=id: 155467 type: IMAGE url: http://trmm.gsfc.nasa.gov/trmm_rain/Events/TRMM_SATELLITE.blurred.medium.jpg Date=2021-11-18 User Id=tstevens Entity=BroaderRelation Operation=INSERT User Note=Move Concepts System Note=add broader relation New Value=TRMM [89c509e6-13f6-4d6e-b46c-0479d2c7d88d,826478] - Space-based Platforms [b39a69b4-c3b9-4a94-b296-bbbbe5e4c847,835875] Date=2021-11-30 User Id=tstevens Entity=BroaderRelation Operation=INSERT User Note=Move Concepts System Note=add broader relation New Value=TRMM [89c509e6-13f6-4d6e-b46c-0479d2c7d88d,826478] - Earth Observation Satellites [3466eed1-2fbb-49bf-ab0b-dc08731d502b,826121] The Tropical Rainfall Measuring Mission (or TRMM) is a NASA satellite that provides more information both to test and to improve those models. TRMM is particularly devoted to determining rainfall in the tropics and subtropics of the Earth. These regions make up about two thirds of the total rainfall on Earth and are responsible for driving our weather and climate system. TRMM contributed to a better understanding of where and how much the winds blow, where the clouds form and rain occurs, where floods and droughts will occur, and how the winds drive the ocean currents. TRMM accomplished this not just by providing rainfall data but, more importantly, by providing information on heat released into the atmosphere as part of the process that leads to rain.TRMM was launched on November 27, 1997, on the Japanese H-II vehicle from the Tanegashima Space Center in Tanegashima, Japan. Continuous science data collection began December 8, 1997. Upon completion of the nominal 3-year prime mission, the decision was made to boost the mission from its original altitude of 350km to 402.5km, to reduce fuel consumption and extend the mission life. The TRMM boost was completed August 24, 2001, and the orbit was maintained until 2014, when fuel was depleted and the spacecraft began to descend. Mission operations were terminated in April 2015, the spacecraft re-entered the Earth’s atmosphere and mostly burned up in June 2015.TRMM exceeded its 3-year design goal by collecting 17 years of rainfall data, creating a benchmark rainfall climatology which is used to test, compare and improve global climate models. The TRMM dataset of rain distribution across the tropics has narrowed considerably the range of uncertainty in previous space-based rainfall estimates. The choice of a precessing, low-inclination orbit (35°) enabled the quantification of the diurnal cycle of precipitation and convective intensity over land and ocean tropics-wide on fine scales (0.25°). TRMM products have provided the first comprehensive estimates of how rainfall is directly related to latent heat release in the atmosphere, a key characteristic in understanding the impact of tropical rainfall on the general circulation of the atmosphere. Based on hydrometeor vertical structure information from the TRMM active and passive sensors, TRMM produced climatologies of latent heating profiles for analysis and comparison with global models. In addition, the lightning sensor delivered a detailed global map of lightning distribution, and combined with the rain data, led to quantifying the lightning/convection relation for land and ocean.Launch: Launched: November 27, 1997Launch Site: Tanegashima Space Center, JapanOrbit: Altitude: 402 kmInclination: 35 degreesPeriod: 92.6 minutesNon-Sun-SynchronousVital Statistics: Weight: 3512 kgPower: 1100 wattsDesign Life: 3 yearsInstruments: CERES (Clouds and the Earth Radiant Energy SystemLIS (Lightning Imaging Sensor)TMI (TRMM Microwave Radiometer)PR (RADAR)VIRS (Visible/Infrared Radiometer)Website: https://gpm.nasa.gov/missions/trmm[Summary provided by NASA.]Group: Platform_Details Entry_ID: TRMM Group: Platform_Identification Platform_Category: Earth Observation Satellites Short_Name: TRMM Long_Name: Tropical Rainfall Measuring Mission End_Group Group: Synonymous_Platform_Names Short_Name: TRMM End_Group Group: Platform_Associated_Instruments Short_Name: CERES-PFM Short_Name: PR Short_Name: TMI Short_Name: VIRS Short_Name: LIS End_Group Group: Orbit Orbit_Altitude: 402 km Orbit_Inclination: 35 degrees Period: 92.6 minutes Orbit_Type: LEO > Low Earth Orbit > Inclined Non-Polar End_Group Creation_Date: 2007-11-28 Online_Resource: https://gpm.nasa.gov/missions/trmm Group: Platform_Logistics Launch_Date: 1997-11-27 Launch_Site: Tanegashima Island, Japan Design_Life: 3 YEARS Primary_Sponsor: USA/NASA Primary_Sponsor: JAPAN/JAXA End_GroupEnd_Group 2021-12-15 16:26:54.0