Tropical Rainfall Measuring Mission

E399074

Earth observation satellite mission joint NASA–JAXA mission

The Tropical Rainfall Measuring Mission (TRMM) was a joint NASA–JAXA satellite mission launched in 1997 to measure tropical and subtropical rainfall and improve understanding of the global water and energy cycle.

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All labels observed (5)

Label	Occurrences
TRMM	2
Tropical Rainfall Measuring Mission canonical	2
Precipitation Radar	1
TRMM Microwave Imager	1
TRMM satellite	1

How this entity was disambiguated

This entity first appeared as the object of triple T3918777 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Tropical Rainfall Measuring Mission
Context triple: [Global Precipitation Measurement mission core observatory, improvesUpon, Tropical Rainfall Measuring Mission]

A. Aqua satellite
Aqua is a NASA Earth observation satellite focused on studying the planet’s water cycle, including oceans, atmosphere, and ice.
B. Global Precipitation Measurement mission core observatory
The Global Precipitation Measurement mission core observatory is a joint NASA–JAXA satellite designed to provide highly accurate, global measurements of rain and snow to improve weather forecasting and climate research.
C. Terra satellite
Terra is a flagship NASA Earth observation satellite that carries multiple instruments to monitor the planet’s climate, land, oceans, and atmosphere from polar orbit.
D. NOAA-20
NOAA-20 is a U.S. polar-orbiting weather and environmental satellite operated by NOAA that provides critical data for global weather forecasting and climate monitoring.
E. Geostationary Operational Environmental Satellite program
The Geostationary Operational Environmental Satellite (GOES) program is a series of U.S. weather satellites in geostationary orbit that provide continuous monitoring of atmospheric, oceanic, and environmental conditions for forecasting and research.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Tropical Rainfall Measuring Mission
Target entity description: The Tropical Rainfall Measuring Mission (TRMM) was a joint NASA–JAXA satellite mission launched in 1997 to measure tropical and subtropical rainfall and improve understanding of the global water and energy cycle.

A. Aqua satellite
Aqua is a NASA Earth observation satellite focused on studying the planet’s water cycle, including oceans, atmosphere, and ice.
B. Global Precipitation Measurement mission core observatory
The Global Precipitation Measurement mission core observatory is a joint NASA–JAXA satellite designed to provide highly accurate, global measurements of rain and snow to improve weather forecasting and climate research.
C. Terra satellite
Terra is a flagship NASA Earth observation satellite that carries multiple instruments to monitor the planet’s climate, land, oceans, and atmosphere from polar orbit.
D. NOAA-20
NOAA-20 is a U.S. polar-orbiting weather and environmental satellite operated by NOAA that provides critical data for global weather forecasting and climate monitoring.
E. Geostationary Operational Environmental Satellite program
The Geostationary Operational Environmental Satellite (GOES) program is a series of U.S. weather satellites in geostationary orbit that provide continuous monitoring of atmospheric, oceanic, and environmental conditions for forecasting and research.
F. None of above. chosen

Statements (45)

Predicate	Object
instanceOf	Earth observation satellite mission ⓘ joint NASA–JAXA mission ⓘ
abbreviation	TRMM ⓘ linked to: Tropical Rainfall Measuring Mission
agencyProgram	JAXA Earth observation program ⓘ linked to: ALOS Earth observation satellites NASA Earth Science program ⓘ linked to: NASA Earth Science Division
contributedTo	calibration of other satellite rainfall estimates ⓘ understanding of global precipitation patterns ⓘ
country	Japan ⓘ United States ⓘ linked to: United States of America
coverageRegion	subtropical regions ⓘ tropical regions ⓘ
dataUse	climate variability studies ⓘ flood and landslide monitoring ⓘ global precipitation climatology ⓘ hurricane and typhoon research ⓘ numerical weather prediction model improvement ⓘ
deorbitDate	2015-06-15 ⓘ
endOfScienceOperations	2015-04 ⓘ
instrument	Clouds and the Earth’s Radiant Energy System ⓘ Lightning Imaging Sensor ⓘ Precipitation Radar ⓘ linked to: Tropical Rainfall Measuring Mission TRMM Microwave Imager ⓘ Visible and Infrared Scanner ⓘ linked to: Visible Infrared Imaging Radiometer Suite
launchCountry	Japan ⓘ
launchDate	1997-11-27 ⓘ
launchSite	Tanegashima Space Center ⓘ
launchVehicle	H-II rocket ⓘ linked to: H-II rocket family
launchYear	1997 ⓘ
missionType	climate research ⓘ meteorology ⓘ precipitation measurement ⓘ
notableFeature	first spaceborne precipitation radar ⓘ
objective	improve understanding of the global energy cycle ⓘ improve understanding of the global water cycle ⓘ
operator	JAXA ⓘ linked to: Japan Aerospace Exploration Agency NASA ⓘ
orbitInclination	35 degrees ⓘ
orbitRegime	tropical ⓘ
orbitType	low Earth orbit ⓘ
primaryObjective	measure tropical and subtropical rainfall ⓘ
scientificDiscipline	atmospheric science ⓘ climatology ⓘ hydrology ⓘ
status	decommissioned ⓘ
successorMission	Global Precipitation Measurement ⓘ linked to: Global Precipitation Measurement mission core observatory

How these facts were elicited