GPM Core Observatory

The Evolution of NASA Precipitation Data

The Evolution of NASA Precipitation Data
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NASA’s global precipitation data and data processing systems have come a long way from the launch of TRMM in 1997 to the ongoing GPM mission. 

Just before midnight Eastern Daylight Time on June 15, 2015, a fireball appeared over central Africa, streaked across Madagascar, and tracked across the uninhabited Southern Indian Ocean. This was the fiery end of the joint NASA/Japan Aerospace Exploration Agency (JAXA) Tropical Rainfall Measuring Mission (TRMM). TRMM’s homecoming after more than 17 years in orbit also marked the end of the first major satellite mission specifically designed to gather data about tropical precipitation and its contributions to global circulation.

The data collection started by TRMM continues with the joint NASA/JAXA Global Precipitation Measurement (GPM) mission, which launched in February 2014. From the launch of TRMM in 1997 to the ongoing GPM mission, remotely-sensed hydrometeorological data have evolved greatly. This is a reflection of not only better instrumentation, but also a better understanding of the water cycle and how this cycle interconnects with the energy, carbon, and other cycles driving our planet.

NASA’s global precipitation data and data processing systems have come a long way from the launch of TRMM in 1997 to the ongoing GPM mission. 

Just before midnight Eastern Daylight Time on June 15, 2015, a fireball appeared over central Africa, streaked across Madagascar, and tracked across the uninhabited Southern Indian Ocean. This was the fiery end of the joint

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GPM Gets a Ton of Kilo

https://www.youtube.com/watch?v=8eIwMXnU8IA&feature=youtu.be
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The Global Precipitation Measurement (GPM) mission core satellite provided many views of Tropical Cyclone Kilo over its very long life. GPM is a satellite co-managed by NASA and the Japan Aerospace Exploration Agency that has the ability to analyze rainfall and cloud heights. GPM was able to provide data on Kilo over its 21 day life-span.  The GPM core observatory satellite flew over Kilo on August 25, 2015 at 0121 UTC as it approached Johnson Atoll and found that rainfall intensity had recently increased and the tropical depression's storm tops were very tall. GPM's Dual-Frequency Precipitation Radar (DPR) discovered that rain was falling at a rate of almost 65 mm (2.6 inches) per hour and storm tops were measured at altitudes of over 15.4 km (9.5 miles). Kilo was born in the Central Pacific Ocean on August 21, became a hurricane, crossed the International Dateline and was re-classified as a Typhoon and finally became extra-tropical on September 11 off Hokkaido, Japan, the northernmost of Japan’s main islands.

A narrated visualization of Typhoon Kilo.

Click here for a full transcript.

Click here to download this video in high resolution from the NASA Goddard Scientific Visualization Studio.
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GPM's Worldwide Tour of Global Precipitation

GPM's Worldwide Tour of Global Precipitation
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Rain, snow, hail, ice, and every mix in between make up the precipitation that touches everyone on our planet. But precipitation doesn't fall equally in all places around the world, as seen in NASA's new animation that captures every shower, snowstorm and tropical cyclone over a six-day period in August 2014. The time lapse was created from data captured by the Global Precipitation Measurement (GPM) satellite mission, now just over a year old, which scientists are using to better understand freshwater resources, natural disasters, crop health and more.

Rain, snow,

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3D Views of February Snow Storms from GPM

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The Global Precipitation Measurement (GPM) Core Observatory captured a 3-D image of a winter storm on Feb. 17, 2015, that left 6 to 12 inches of snow over much of Kentucky, southwestern West Virginia and northwestern North Carolina. The shades of blue indicate rates of snowfall, with more intense snowfall shown in darker blue. Intense rainfall is shown in red. The imagery shows great variation in precipitation types over the southeastern United States. 

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GPM Sees Heavy Snow Over New England

Signs of Spring Spring Weather What is spring to you?  Spring around the world March 20 - launch of contest
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At 5:05 p.m. EST Monday, Jan. 26, 2015, the Global Precipitation Measurement mission's Core Observatory flew over the Nor'easter that dumped snow on New England. This satellite image shows the rate of rainfall, with low amounts in green and high in red, and snowfall, in blue to purple. The center of the storm, shown in 3-D, was offshore with far reaching bands of snowfall. More intense snow rates are shown in darker blue, which can be seen on the northern edge of the storm. Visible in the 3-D image of the center of the storm are the snowy tops of the clouds in blue and underneath where it melts into rain, the most intense rainfall shown in red, over the ocean. Over land, snow reaches the ground.

At 5:05 p.m. EST Monday, Jan. 26, 2015, the Global

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GPM Data Goes Public

GPM Data from a March 2014 Snostorm
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The most accurate and comprehensive collection of rain, snowfall and other types of precipitation data ever assembled now is available to the public. This new resource for climate studies, weather forecasting, and other applications is based on observations by the Global Precipitation Measurement (GPM) Core Observatory, a joint mission of NASA and the Japan Aerospace Exploration Agency (JAXA), with contributions from a constellation of international partner satellites. The GPM Core Observatory, launched from Japan on Feb. 27, carries two advanced instruments to measure rainfall, snowfall, ice and other precipitation. The advanced and precise data from the GPM Core Observatory are used to unify and standardize precipitation observations from other constellation satellites to produce the GPM mission data. These data are freely available through NASA's Precipitation Processing System at Goddard Space Flight Center in Greenbelt, Maryland.

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Get Data

 

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Level 2 GPM Microwave Imager (GMI) Data Released

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The Global Precipitation Measurement (GPM) mission's Precipitation Processing System at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, has released the Level 2 GPM Microwave Imager (GMI) data to the public. The data set includes precipitation rates, which show how much rain and snowfall accumulate over a given time period.

The Global

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GPM Performs Maneuvers, Continues Calibration

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The GPM spacecraft continues to perform normally. The GPM Microwave Imager and Dual-frequency Precipitation radar continue operations and calibration. The spacecraft performed two routine maneuvers. The first was a 180-degree yaw (left/right in the horizontal plane) turn. This is the second yaw turn that changes the orientation of the spacecraft; it is now flying forwards again. Yaw turns are performed approximately every 40 days for thermal control, as the angle between the spacecraft's orbit and the sun changes. This keeps the side of the spacecraft designed to remain cold from overheating.

The second routine maneuver performed was a delta-v burn to increase the velocity of the spacecraft and maintain altitude. An extremely thin layer of atmosphere still exists at GPM's altitude of 250 miles above Earth's surface. As the spacecraft flies through the thin gases, drag occurs, slowing – and lowering – the spacecraft. Delta-v burns occur weekly to maintain altitude.

The

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