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/80eca755-c564-4616-b910-a4c4387b7c54 Terra Date=2016-10-13 User Id=saritz Entity=AltLabel Operation=UPDATE Field=text System Note=update AltLabel Old Value=TERRA New Value=Terra Date=2018-04-25 User Id=sritz Entity=AltLabel Operation=DELETE System Note=delete AltLabel Old Value=id: 177051 category: null text: Terra language code: en Date=2021-11-18 User Id=tstevens Entity=BroaderRelation Operation=DELETE User Note=Move Concepts System Note=delete broader relation Old Value=Terra [80eca755-c564-4616-b910-a4c4387b7c54,826435] - Earth Observation Satellites [3466eed1-2fbb-49bf-ab0b-dc08731d502b,826121] Date=2015-01-21 User Id=gee-cee Entity=WeightedRelation Operation=INSERT User Note=Added Related Keyword System Note=insert WeightedRelation New Value=id: null related concept uuid: 3d148e55-a196-4779-ad6e-71a6acb5ec92 relationship type: null relationship value: null generated by: null Date=2016-04-22 User Id=saritz Entity=AltLabel Operation=INSERT User Note=S. Ritz added alternate labels. System Note=insert AltLabel New Value=id: null text: am-1 language code: en Date=2018-04-25 User Id=sritz Entity=AltLabel Operation=UPDATE Field=text System Note=update AltLabel Old Value=Earth Observing System, TERRA (AM-1) New Value=Earth Observing System, Terra (AM-1) Date=2018-03-06 User Id=sritz Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=Terra is the flagship satellite of NASA's Earth observing systems. Terra is the first EOS (Earth Observing System) platform and provides global data on the state of the atmosphere, land, and oceans, as well as their interactions with solar radiation and with one another. Since the 1950's, it has become increasingly clear that human activities are modifying the composition of the atmosphere on a global scale. As the result of industrialization, the concentration of carbon dioxide has increased by about 20% during this period. More recently, the stratospheric concentrations of chemically-active gases containing chlorine, bromine, and fluorine have dramatically increased. These trends have created issues of global interest including global warming and declining levels of ozone (both globally and in the ozone &hole& in the Antarctic). It has become increasingly clear, however, that these processes do not occur independently of one another and can only be understood in the context of a global system. Accurate and precise measurements are needed to unravel complex and interactive relationships between chemical, radiative, and dynamical processes in the atmosphere, ocean, and on land. As a result, in 1991 NASA initiated a comprehensive program to understand the Earth's atmosphere, oceans, land, and cryosphere (ice and snow) as a single, complex, interactive system. NASA's Earth Observing System (EOS) consists of a series of spaceborne instruments to monitor crucial components of the Earth system, an advanced data handling system, and teams of scientists who will evaluate on-going climate change and predict future changes. Ultimately, EOS will produce scientifically sound recommendations for environmental policy to national and international bodies to mitigate or prepare for these changes. Key Terra Facts: Joint with Japan and Canada Orbit: Type: Near-polar, sun-synchronous Equatorial Crossing: 10:30 a.m. Altitude: 705 km Inclination: 98.1 degrees Period: 98.88 minutes Repeat Cycle: 16 days Dimensions: 2.7 m x 3.3 m x 6.8 m Mass: 5,190 kg Power: 2,530 W Design Life: 6 years Terra Status: Operating instruments: ASTER, CERES, MODIS, MISR, and MOPITT are operating well. ASTER Short Wave Infrared (SWIR) data is unavailable. Current life expectancy: Terra has far exceeded its design life and has a strong chance of operating successfully into the early 2020s. [Summary provided by NASA] Group: Platform_Details Entry_ID: TERRA Group: Platform_Identification Platform_Category: Earth Observation Satellites Short_Name: TERRA Long_Name: Earth Observing System, TERRA (AM-1) End_Group Group: Synonymous_Platform_Names Short_Name: EOS AM-1 End_Group Group: Platform_Associated_Instruments Short_Name: MOPITT Short_Name: MODIS Short_Name: MISR Short_Name: CERES-FM2 Short_Name: CERES-FM1 Short_Name: ASTER End_Group Group: Orbit Orbit_Altitude: 705 km Orbit_Inclination: 98.2 degrees Equator_Crossing: 10:30 a.m. Period: 98.88 minutes Repeat_Cycle: 16 days Orbit_Type: LEO > Low Earth Orbit > Polar Sun-Synchronous End_Group Creation_Date: 2007-02-06 Online_Resource: http://terra.nasa.gov/ Online_Resource: http://science.nasa.gov/missions/terra/ Online_Resource: http://www.nasa.gov/mission_pages/terra/ Sample_Image: http://science.nasa.gov/media/medialibrary/2010/03/31/terra.jpeg Group: Platform_Logistics Launch_Date: 1999-12-18 Launch_Site: VANDENBERG AIR FORCE BASE, USA Design_Life: 6 years Primary_Sponsor: USA/NASA End_Group End_Group New Value=Terra is the flagship satellite of NASA's Earth observing systems. Terra is the first EOS (Earth Observing System) platform and provides global data on the state of the atmosphere, land, and oceans, as well as their interactions with solar radiation and with one another. Since the 1950's, it has become increasingly clear that human activities are modifying the composition of the atmosphere on a global scale. As the result of industrialization, the concentration of carbon dioxide has increased by about 20% during this period. More recently, the stratospheric concentrations of chemically-active gases containing chlorine, bromine, and fluorine have dramatically increased. These trends have created issues of global interest including global warming and declining levels of ozone (both globally and in the ozone &hole& in the Antarctic). It has become increasingly clear, however, that these processes do not occur independently of one another and can only be understood in the context of a global system. Accurate and precise measurements are needed to unravel complex and interactive relationships between chemical, radiative, and dynamical processes in the atmosphere, ocean, and on land. As a result, in 1991 NASA initiated a comprehensive program to understand the Earth's atmosphere, oceans, land, and cryosphere (ice and snow) as a single, complex, interactive system. NASA's Earth Observing System (EOS) consists of a series of spaceborne instruments to monitor crucial components of the Earth system, an advanced data handling system, and teams of scientists who will evaluate on-going climate change and predict future changes. Ultimately, EOS will produce scientifically sound recommendations for environmental policy to national and international bodies to mitigate or prepare for these changes. Key Terra Facts: Joint with Japan and Canada Orbit: Type: Near-polar, sun-synchronous Equatorial Crossing: 10:30 a.m. Altitude: 705 km Inclination: 98.1 degrees Period: 98.88 minutes Repeat Cycle: 16 days Dimensions: 2.7 m x 3.3 m x 6.8 m Mass: 5,190 kg Power: 2,530 W Design Life: 6 years Terra Status: Operating instruments: ASTER, CERES, MODIS, MISR, and MOPITT are operating well. ASTER Short Wave Infrared (SWIR) data is unavailable. Current life expectancy: Terra has far exceeded its design life and has a strong chance of operating successfully into the early 2020s. [Summary provided by NASA] Group: Platform_Details Entry_ID: TERRA Group: Platform_Identification Platform_Category: Earth Observation Satellites Short_Name: TERRA Long_Name: Earth Observing System, TERRA (AM-1) End_Group Group: Synonymous_Platform_Names Short_Name: EOS AM-1 End_Group Group: Platform_Associated_Instruments Short_Name: MOPITT Short_Name: MODIS Short_Name: MISR Short_Name: CERES-FM2 Short_Name: CERES-FM1 Short_Name: ASTER End_Group Group: Orbit Orbit_Altitude: 705 km Orbit_Inclination: 98.2 degrees Equator_Crossing: 10:30 a.m. Period: 98.88 minutes Repeat_Cycle: 16 days Orbit_Type: LEO > Low Earth Orbit > Polar Sun-Synchronous End_Group Creation_Date: 2007-02-06 Online_Resource: https://terra.nasa.gov/ Online_Resource: https://www.nasa.gov/mission_pages/terra/index.html Sample_Image: https://www.nasa.gov/mission_pages/terra/spacecraft/index.html Group: Platform_Logistics Launch_Date: 1999-12-18 Launch_Site: VANDENBERG AIR FORCE BASE, USA Design_Life: 6 years Primary_Sponsor: USA/NASA End_Group End_Group Date=2020-02-04 User Id=sritz Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=Terra is the flagship satellite of NASA's Earth observing systems. Terra is the first EOS (Earth Observing System) platform and provides global data on the state of the atmosphere, land, and oceans, as well as their interactions with solar radiation and with one another. Since the 1950's, it has become increasingly clear that human activities are modifying the composition of the atmosphere on a global scale. As the result of industrialization, the concentration of carbon dioxide has increased by about 20% during this period. More recently, the stratospheric concentrations of chemically-active gases containing chlorine, bromine, and fluorine have dramatically increased. These trends have created issues of global interest including global warming and declining levels of ozone (both globally and in the ozone &hole& in the Antarctic). It has become increasingly clear, however, that these processes do not occur independently of one another and can only be understood in the context of a global system. Accurate and precise measurements are needed to unravel complex and interactive relationships between chemical, radiative, and dynamical processes in the atmosphere, ocean, and on land. As a result, in 1991 NASA initiated a comprehensive program to understand the Earth's atmosphere, oceans, land, and cryosphere (ice and snow) as a single, complex, interactive system. NASA's Earth Observing System (EOS) consists of a series of spaceborne instruments to monitor crucial components of the Earth system, an advanced data handling system, and teams of scientists who will evaluate on-going climate change and predict future changes. Ultimately, EOS will produce scientifically sound recommendations for environmental policy to national and international bodies to mitigate or prepare for these changes. Key Terra Facts: Joint with Japan and Canada Orbit: Type: Near-polar, sun-synchronous Equatorial Crossing: 10:30 a.m. Altitude: 705 km Inclination: 98.1 degrees Period: 98.88 minutes Repeat Cycle: 16 days Dimensions: 2.7 m x 3.3 m x 6.8 m Mass: 5,190 kg Power: 2,530 W Design Life: 6 years Terra Status: Operating instruments: ASTER, CERES, MODIS, MISR, and MOPITT are operating well. ASTER Short Wave Infrared (SWIR) data is unavailable. Current life expectancy: Terra has far exceeded its design life and has a strong chance of operating successfully into the early 2020s. [Summary provided by NASA] Group: Platform_Details Entry_ID: TERRA Group: Platform_Identification Platform_Category: Earth Observation Satellites Short_Name: TERRA Long_Name: Earth Observing System, TERRA (AM-1) End_Group Group: Synonymous_Platform_Names Short_Name: EOS AM-1 End_Group Group: Platform_Associated_Instruments Short_Name: MOPITT Short_Name: MODIS Short_Name: MISR Short_Name: CERES-FM2 Short_Name: CERES-FM1 Short_Name: ASTER End_Group Group: Orbit Orbit_Altitude: 705 km Orbit_Inclination: 98.2 degrees Equator_Crossing: 10:30 a.m. Period: 98.88 minutes Repeat_Cycle: 16 days Orbit_Type: LEO > Low Earth Orbit > Polar Sun-Synchronous End_Group Creation_Date: 2007-02-06 Online_Resource: https://terra.nasa.gov/ Online_Resource: https://www.nasa.gov/mission_pages/terra/index.html Sample_Image: https://www.nasa.gov/mission_pages/terra/spacecraft/index.html Group: Platform_Logistics Launch_Date: 1999-12-18 Launch_Site: VANDENBERG AIR FORCE BASE, USA Design_Life: 6 years Primary_Sponsor: USA/NASA End_Group End_Group New Value=Terra is the flagship satellite of NASA's Earth observing systems. Terra is the first EOS (Earth Observing System) platform and provides global data on the state of the atmosphere, land, and oceans, as well as their interactions with solar radiation and with one another. Since the 1950's, it has become increasingly clear that human activities are modifying the composition of the atmosphere on a global scale. As the result of industrialization, the concentration of carbon dioxide has increased by about 20% during this period. More recently, the stratospheric concentrations of chemically-active gases containing chlorine, bromine, and fluorine have dramatically increased. These trends have created issues of global interest including global warming and declining levels of ozone (both globally and in the ozone &hole& in the Antarctic). It has become increasingly clear, however, that these processes do not occur independently of one another and can only be understood in the context of a global system. Accurate and precise measurements are needed to unravel complex and interactive relationships between chemical, radiative, and dynamical processes in the atmosphere, ocean, and on land. As a result, in 1991 NASA initiated a comprehensive program to understand the Earth's atmosphere, oceans, land, and cryosphere (ice and snow) as a single, complex, interactive system. NASA's Earth Observing System (EOS) consists of a series of spaceborne instruments to monitor crucial components of the Earth system, an advanced data handling system, and teams of scientists who will evaluate on-going climate change and predict future changes. Ultimately, EOS will produce scientifically sound recommendations for environmental policy to national and international bodies to mitigate or prepare for these changes. Key Terra Facts: Joint with Japan and Canada Orbit: Type: Near-polar, sun-synchronous Equatorial Crossing: 10:30 a.m. Altitude: 705 km Inclination: 98.1 degrees Period: 98.88 minutes Repeat Cycle: 16 days Dimensions: 2.7 m x 3.3 m x 6.8 m Mass: 5,190 kg Power: 2,530 W Design Life: 6 years Terra Status: Operating instruments: ASTER, CERES, MODIS, MISR, and MOPITT are operating well. ASTER Short Wave Infrared (SWIR) data is unavailable. Current life expectancy: Terra has far exceeded its design life and has a strong chance of operating successfully into the early 2020s. [Summary provided by NASA] Group: Platform_Details Entry_ID: Terra Group: Platform_Identification Platform_Category: Earth Observation Satellites Short_Name: Terra Long_Name: Earth Observing System, Terra (AM-1) End_Group Group: Synonymous_Platform_Names Short_Name: EOS AM-1 End_Group Group: Platform_Associated_Instruments Short_Name: MOPITT Short_Name: MODIS Short_Name: MISR Short_Name: CERES-FM2 Short_Name: CERES-FM1 Short_Name: ASTER End_Group Group: Orbit Orbit_Altitude: 705 km Orbit_Inclination: 98.2 degrees Equator_Crossing: 10:30 a.m. Period: 98.88 minutes Repeat_Cycle: 16 days Orbit_Type: LEO > Low Earth Orbit > Polar Sun-Synchronous End_Group Creation_Date: 2007-02-06 Online_Resource: https://terra.nasa.gov/ Online_Resource: https://www.nasa.gov/mission_pages/terra/index.html Sample_Image: https://www.nasa.gov/mission_pages/terra/spacecraft/index.html Group: Platform_Logistics Launch_Date: 1999-12-18 Launch_Site: VANDENBERG AIR FORCE BASE, USA Design_Life: 6 years Primary_Sponsor: USA/NASA End_Group End_Group Date=2021-11-30 User Id=tstevens Entity=BroaderRelation Operation=INSERT User Note=Move Concepts System Note=add broader relation New Value=Terra [80eca755-c564-4616-b910-a4c4387b7c54,826435] - Earth Observation Satellites [3466eed1-2fbb-49bf-ab0b-dc08731d502b,826121] Date=2015-01-21 User Id=gee-cee Entity=WeightedRelation Operation=UPDATE Field=relationshipType User Note=Added Related Keyword System Note=update WeightedRelation Old Value=null New Value=Platform-Instrument Date=2015-01-21 User Id=saritz Entity=WeightedRelation Operation=INSERT User Note=Added related concept System Note=insert WeightedRelation New Value=id: null related concept uuid: 437ff0d5-8eda-49cd-8ac2-2ebbfdffeff4 relationship type: null relationship value: null generated by: null Date=2016-06-10 User Id=saritz Entity=PrefLabel Operation=UPDATE Field=text System Note=update PrefLabel Old Value=TERRA New Value=Terra Date=2024-11-08 User Id=tstevens Entity=Definition Operation=UPDATE Field=text System Note=update Definition Old Value=Terra is the flagship satellite of NASA's Earth observing systems. Terra is the first EOS (Earth Observing System) platform and provides global data on the state of the atmosphere, land, and oceans, as well as their interactions with solar radiation and with one another. Since the 1950's, it has become increasingly clear that human activities are modifying the composition of the atmosphere on a global scale. As the result of industrialization, the concentration of carbon dioxide has increased by about 20% during this period. More recently, the stratospheric concentrations of chemically-active gases containing chlorine, bromine, and fluorine have dramatically increased. These trends have created issues of global interest including global warming and declining levels of ozone (both globally and in the ozone &hole& in the Antarctic). It has become increasingly clear, however, that these processes do not occur independently of one another and can only be understood in the context of a global system. Accurate and precise measurements are needed to unravel complex and interactive relationships between chemical, radiative, and dynamical processes in the atmosphere, ocean, and on land. As a result, in 1991 NASA initiated a comprehensive program to understand the Earth's atmosphere, oceans, land, and cryosphere (ice and snow) as a single, complex, interactive system. NASA's Earth Observing System (EOS) consists of a series of spaceborne instruments to monitor crucial components of the Earth system, an advanced data handling system, and teams of scientists who will evaluate on-going climate change and predict future changes. Ultimately, EOS will produce scientifically sound recommendations for environmental policy to national and international bodies to mitigate or prepare for these changes. Key Terra Facts: Joint with Japan and Canada Orbit: Type: Near-polar, sun-synchronous Equatorial Crossing: 10:30 a.m. Altitude: 705 km Inclination: 98.1 degrees Period: 98.88 minutes Repeat Cycle: 16 days Dimensions: 2.7 m x 3.3 m x 6.8 m Mass: 5,190 kg Power: 2,530 W Design Life: 6 years Terra Status: Operating instruments: ASTER, CERES, MODIS, MISR, and MOPITT are operating well. ASTER Short Wave Infrared (SWIR) data is unavailable. Current life expectancy: Terra has far exceeded its design life and has a strong chance of operating successfully into the early 2020s. [Summary provided by NASA] Group: Platform_Details Entry_ID: Terra Group: Platform_Identification Platform_Category: Earth Observation Satellites Short_Name: Terra Long_Name: Earth Observing System, Terra (AM-1) End_Group Group: Synonymous_Platform_Names Short_Name: EOS AM-1 End_Group Group: Platform_Associated_Instruments Short_Name: MOPITT Short_Name: MODIS Short_Name: MISR Short_Name: CERES-FM2 Short_Name: CERES-FM1 Short_Name: ASTER End_Group Group: Orbit Orbit_Altitude: 705 km Orbit_Inclination: 98.2 degrees Equator_Crossing: 10:30 a.m. Period: 98.88 minutes Repeat_Cycle: 16 days Orbit_Type: LEO > Low Earth Orbit > Polar Sun-Synchronous End_Group Creation_Date: 2007-02-06 Online_Resource: https://terra.nasa.gov/ Online_Resource: https://www.nasa.gov/mission_pages/terra/index.html Sample_Image: https://www.nasa.gov/mission_pages/terra/spacecraft/index.html Group: Platform_Logistics Launch_Date: 1999-12-18 Launch_Site: VANDENBERG AIR FORCE BASE, USA Design_Life: 6 years Primary_Sponsor: USA/NASA End_Group End_Group New Value=Terra, the flagship of NASA’s Earth Observing System satellites, studies the interactions among Earth's atmosphere, lands, oceans, and radiant energy, providing insight into how the Earth system is changing, revealing humanity's impact on the planet, and providing crucial data about natural hazards such as fires and volcanoes. Date=2018-03-06 User Id=sritz Entity=Resource Operation=DELETE System Note=delete Resource Old Value=id: 82303 type: IMAGE url: http://science.nasa.gov/media/medialibrary/2010/03/31/terra.jpeg Date=2024-11-08 User Id=tstevens Entity=Definition Operation=UPDATE Field=reference System Note=update Definition Old Value=https://terra.nasa.gov/ New Value=https://science.nasa.gov/mission/terra/ Date=2015-01-21 User Id=saritz Entity=WeightedRelation Operation=UPDATE Field=relationshipValue User Note=Added related concept System Note=update WeightedRelation Old Value=null New Value=1 Date=2024-11-08 User Id=tstevens Entity=Resource Operation=DELETE System Note=delete Resource Old Value=id: 519447 type: provider url: https://terra.nasa.gov/ Date=2016-04-22 User Id=saritz Entity=AltLabel Operation=INSERT User Note=S. Ritz added alternate labels. System Note=insert AltLabel New Value=id: null text: Terra language code: en Date=2016-04-22 User Id=saritz Entity=AltLabel Operation=INSERT User Note=S. Ritz added alternate labels. System Note=insert AltLabel New Value=id: null text: TERRA (MORNING EQUATORIAL CROSSING TIME SATELLITE language code: en Date=2021-11-30 User Id=tstevens Entity=BroaderRelation Operation=DELETE User Note=Move Concepts System Note=delete broader relation Old Value=Terra [80eca755-c564-4616-b910-a4c4387b7c54,826435] - Space-based Platforms [b39a69b4-c3b9-4a94-b296-bbbbe5e4c847,835875] Date=2016-06-10 User Id=saritz Entity=AltLabel Operation=UPDATE Field=text System Note=update AltLabel Old Value=Terra New Value=TERRA Date=2016-04-22 User Id=saritz Entity=AltLabel Operation=INSERT User Note=S. Ritz added alternate labels. System Note=insert AltLabel New Value=id: null text: AM-1 language code: en Date=2015-01-21 User Id=gee-cee Entity=WeightedRelation Operation=UPDATE Field=relationshipValue User Note=Added Related Keyword System Note=update WeightedRelation Old Value=null New Value=1 Date=2025-04-28 User Id=sritz Entity=Definition Operation=UPDATE Field=reference System Note=update Definition Old Value=https://science.nasa.gov/mission/terra/ New Value=https://terra.nasa.gov/ https://science.nasa.gov/mission/terra/ https://www.earthdata.nasa.gov/data/platforms/space-based-platforms/terra Date=2018-03-06 User Id=sritz Entity=Resource Operation=INSERT System Note=insert Resource New Value=id: null type: provider url: https://terra.nasa.gov/ Date=2018-03-26 User Id=sritz Entity=AltLabel Operation=INSERT System Note=insert AltLabel New Value=id: null category: null text: TERRA language code: en Date=2016-04-22 User Id=saritz Entity=AltLabel Operation=INSERT User Note=S. Ritz added alternate labels. System Note=insert AltLabel New Value=id: null text: GOES-12 (AQUA/TERRA) language code: en Date=2018-03-26 User Id=sritz Entity=PrefLabel Operation=UPDATE Field=text System Note=update PrefLabel Old Value=TERRA New Value=Terra Date=2016-10-13 User Id=saritz Entity=PrefLabel Operation=UPDATE Field=text System Note=update PrefLabel Old Value=Terra New Value=TERRA Date=2020-09-30 User Id=sritz Entity=Definition Operation=UPDATE Field=reference System Note=update Definition New Value=https://terra.nasa.gov/ Date=2021-11-18 User Id=tstevens Entity=BroaderRelation Operation=INSERT User Note=Move Concepts System Note=add broader relation New Value=Terra [80eca755-c564-4616-b910-a4c4387b7c54,826435] - Space-based Platforms [b39a69b4-c3b9-4a94-b296-bbbbe5e4c847,835875] Date=2015-01-21 User Id=gee-cee Entity=Definition Operation=UPDATE Field=text User Note=Added Related Keyword System Note=update Definition Old Value=Terra is the flagship satellite of NASA's Earth observing systems. Terra is the first EOS (Earth Observing System) platform and provides global data on the state of the atmosphere, land, and oceans, as well as their interactions with solar radiation and with one another. Since the 1950's, it has become increasingly clear that human activities are modifying the composition of the atmosphere on a global scale. As the result of industrialization, the concentration of carbon dioxide has increased by about 20% during this period. More recently, the stratospheric concentrations of chemically-active gases containing chlorine, bromine, and fluorine have dramatically increased. These trends have created issues of global interest including global warming and declining levels of ozone (both globally and in the ozone &hole& in the Antarctic). It has become increasingly clear, however, that these processes do not occur independently of one another and can only be understood in the context of a global system. Accurate and precise measurements are needed to unravel complex and interactive relationships between chemical, radiative, and dynamical processes in the atmosphere, ocean, and on land. As a result, in 1991 NASA initiated a comprehensive program to understand the Earth's atmosphere, oceans, land, and cryosphere (ice and snow) as a single, complex, interactive system. NASA's Earth Observing System (EOS) consists of a series of spaceborne instruments to monitor crucial components of the Earth system, an advanced data handling system, and teams of scientists who will evaluate on-going climate change and predict future changes. Ultimately, EOS will produce scientifically sound recommendations for environmental policy to national and international bodies to mitigate or prepare for these changes. Key Terra Facts: Joint with Japan and Canada Orbit: Type: Near-polar, sun-synchronous Equatorial Crossing: 10:30 a.m. Altitude: 705 km Inclination: 98.1 degrees Period: 98.88 minutes Repeat Cycle: 16 days Dimensions: 2.7 m x 3.3 m x 6.8 m Mass: 5,190 kg Power: 2,530 W Design Life: 6 years [Summary provided by NASA] Group: Platform_Details Entry_ID: TERRA Group: Platform_Identification Platform_Category: Earth Observation Satellites Short_Name: TERRA Long_Name: Earth Observing System, TERRA End_Group Group: Synonymous_Platform_Names Short_Name: EOS AM-1 End_Group Group: Platform_Associated_Instruments Short_Name: MOPITT Short_Name: MODIS Short_Name: MISR Short_Name: CERES-FM2 Short_Name: CERES-FM1 Short_Name: ASTER End_Group Group: Orbit Orbit_Altitude: 705 km Orbit_Inclination: 98.2 degrees Equator_Crossing: 10:30 a.m. Period: 98.88 minutes Repeat_Cycle: 16 days Orbit_Type: LEO > Low Earth Orbit > Polar Sun-Synchronous End_Group Creation_Date: 2007-02-06 Online_Resource: http://science.hq.nasa.gov/missions/satellite_52.htm Online_Resource: http://terra.nasa.gov/ Sample_Image: http://gcmd.gsfc.nasa.gov/KeywordSearch/default/images/terra.gif Group: Platform_Logistics Launch_Date: 1999-12-18 Launch_Site: VANDENBERG AIR FORCE BASE, USA Design_Life: 6 years Primary_Sponsor: USA/NASA End_Group End_Group New Value=Terra is the flagship satellite of NASA's Earth observing systems. Terra is the first EOS (Earth Observing System) platform and provides global data on the state of the atmosphere, land, and oceans, as well as their interactions with solar radiation and with one another. Since the 1950's, it has become increasingly clear that human activities are modifying the composition of the atmosphere on a global scale. As the result of industrialization, the concentration of carbon dioxide has increased by about 20% during this period. More recently, the stratospheric concentrations of chemically-active gases containing chlorine, bromine, and fluorine have dramatically increased. These trends have created issues of global interest including global warming and declining levels of ozone (both globally and in the ozone &hole& in the Antarctic). It has become increasingly clear, however, that these processes do not occur independently of one another and can only be understood in the context of a global system. Accurate and precise measurements are needed to unravel complex and interactive relationships between chemical, radiative, and dynamical processes in the atmosphere, ocean, and on land. As a result, in 1991 NASA initiated a comprehensive program to understand the Earth's atmosphere, oceans, land, and cryosphere (ice and snow) as a single, complex, interactive system. NASA's Earth Observing System (EOS) consists of a series of spaceborne instruments to monitor crucial components of the Earth system, an advanced data handling system, and teams of scientists who will evaluate on-going climate change and predict future changes. Ultimately, EOS will produce scientifically sound recommendations for environmental policy to national and international bodies to mitigate or prepare for these changes. Key Terra Facts: Joint with Japan and Canada Orbit: Type: Near-polar, sun-synchronous Equatorial Crossing: 10:30 a.m. Altitude: 705 km Inclination: 98.1 degrees Period: 98.88 minutes Repeat Cycle: 16 days Dimensions: 2.7 m x 3.3 m x 6.8 m Mass: 5,190 kg Power: 2,530 W Design Life: 6 years [Summary provided by NASA] Group: Platform_Details Entry_ID: TERRA Group: Platform_Identification Platform_Category: Earth Observation Satellites Short_Name: TERRA Long_Name: Earth Observing System, TERRA End_Group Group: Synonymous_Platform_Names Short_Name: EOS AM-1 End_Group Group: Platform_Associated_Instruments Short_Name: MOPITT Short_Name: MODIS Short_Name: MISR Short_Name: CERES-FM2 Short_Name: CERES-FM1 Short_Name: ASTER End_Group Group: Orbit Orbit_Altitude: 705 km Orbit_Inclination: 98.2 degrees Equator_Crossing: 10:30 a.m. Period: 98.88 minutes Repeat_Cycle: 16 days Orbit_Type: LEO > Low Earth Orbit > Polar Sun-Synchronous End_Group Creation_Date: 2007-02-06 Online_Resource: http://science.hq.nasa.gov/missions/satellite_52.htm Online_Resource: http://terra.nasa.gov/ Sample_Image: http://gcmd.gsfc.nasa.gov/KeywordSearch/default/images/terra.gif Group: Platform_Logistics Launch_Date: 1999-12-18 Launch_Site: VANDENBERG AIR FORCE BASE, USA Design_Life: 6 years Primary_Sponsor: USA/NASA End_Group End_Group Terra, the flagship of NASA’s Earth Observing System satellites, studies the interactions among Earth's atmosphere, lands, oceans, and radiant energy, providing insight into how the Earth system is changing, revealing humanity's impact on the planet, and providing crucial data about natural hazards such as fires and volcanoes. 2025-04-28 17:41:17.0