One of the prime instruments onboard the GPM Core Observatory is called the Dual-frequency Precipitation Radar (DPR). The DPR consists of a Ku-band precipitation radar (KuPR) and a Ka-band precipitation radar (KaPR). The KuPR (13.6 GHz) is an updated version of the highly successful unit flown on the TRMM mission. The KuPR and the KaPR are co-aligned on the GPM spacecraft bus such that that the 5 km footprint location on the earth is the same.

Data collected from the KuPR and KaPR units provides 3-dimensional observations of rain and also provides an accurate estimation of rainfall rate to the scientific community. The DPR instrument is allocated 190 Kbps bandwidth over the 1553B spacecraft data bus.

Learn more: https://pmm.nasa.gov/GPM/flight-project/DPR

Latest Updates

October 24, 2018
GPM visualization of Typhoon Yutu
NASA's Global Precipitation Measurement (GPM) core observatory satellite captured an image of Super Typhoon Yutu when it flew over the powerful storm just as the center was striking the central Northern Mariana Islands north of Guam. Early on October 25, 2018 Super Typhoon Yutu crossed over the U.S. commonwealth of the Northern Mariana Islands. It was the equivalent of a Category 5 hurricane. The National Weather Service in Guam said it was the strongest storm to hit any part of the U.S. this year.
September 14, 2018
GPM Core Observatory overpass of Hurricane Florence from 9/14/18 at 18:36 UTC. Ground track shows rain rates (mm/hr) from the GPM Microwave Imager (GMI) instrument, 3D swath shows rain rates in the atmospheric column from the Dual-frequency Precipitation
The Global Precipitation Measurement (GPM) mission is an international network of satellites that provide the next-generation global observations of rain and snow. Building upon the success of the Tropical Rainfall Measuring Mission (TRMM), the GPM concept centers on the deployment of a “Core” satellite carrying an advanced radar / radiometer system to measure precipitation from space and serve as a reference standard to unify precipitation measurements from a constellation of research and operational satellites. Through improved measurements of precipitation globally, the GPM mission is...
September 10, 2018
GPM Core Observatory overpass of Hurricane Florence from September 7, 2018.
Video of GPM Observes Tropical Storm Florence Temporarily Weakened by Wind Shear   GPM passed over Tropical Storm Florence on September 7, 2018. As the camera moves in on the storm, DPR's volumetric view of the storm is revealed. A slicing plane moves across the volume to display precipitation rates throughout the storm. Shades of green to red represent liquid precipitation. Frozen precipitation is shown in cyan and purple. NASA's Global Precipitation Measurement mission or GPM core observatory satellite flew over Tropical Storm Florence on September 7, 2018. At that time, the...
August 23, 2018
GPM Core Observatory overpass of Hurricane Lane from Aug. 23rd, 2018 at 6:21am HST (local time).
GPM Core Observatory overpass of Hurricane Lane from Aug. 23rd, 2018 at 6:21am HST (local time). Battling increased vertical shear, Hurricane Lane struggles northward, down from its Category 5 peak but still featuring winds of over 110 knots. The storm has already begun impacting the Hawaiian Islands, bringing over a foot of rain to Hilo via its outer bands. Lane is expected to continue northward, approaching the island chain, before slowly...
September 18, 2017
GPM overpass of hurricane Maria from 9/18/17
Intensifying hurricane Marie is on a path that is predicted to impact the Leeward Islands. Hurricane Irma caused death and wide spread destruction there less than two weeks ago. Very powerful convective storms and multiple lightning strokes within Maria have been cited as proof that Maria is an energetic intensifying hurricane. The GPM core observatory satellite had an excellent view of hurricane Maria when it passed almost directly above the hurricane on...
September 6, 2017
GPM overpass of Hurricane Irma on 9/5/17
The GPM core observatory satellite had an exceptional view of hurricane Irma's eye when it flew above on September 5, 2017 at 12:52 PM AST (1652 UTC). This image shows a rainfall analysis that was derived from GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) data. Irma was approaching the Leeward Islands with maximum sustained winds of about 178 mph (155 kts). This made Irma a dangerous category five hurricane on the Saffir-Simpson...
August 25, 2017
GPM image of hurricane Harvey on Aug 25 2017
NASA’s Short-term Prediction Research and Transition (SPoRT) Center collaborated with the Naval Research Laboratory to integrate false color composites of passive microwave brightness temperatures that are helpful for identifying the center of circulation of storms like Hurricane Harvey, especially when thick cloud cover may otherwise obscure the center of the circulation.  A false color composite is generated using 89 GHz brightness temperatures from the Global Precipitation...
August 25, 2017
GPM precipitation radar data from Hurricane Harvey on 8/25/17.
Hurricane Harvey's has continued to intensify today as it moves toward the Texas coast. Bands of rain from the hurricane were affecting the Gulf coast from Louisiana to southeastern Texas. The Global Precipitation Measurement (GPM) mission core observatory satellite had another look at hurricane Harvey on August 25, at...
October 6, 2016
GPM precipitation data from hurricane Matthew
NASA's Global Precipitation Measurement mission or GPM core observatory satellite flew over Hurricane Matthew several times as the category 4 storm headed toward Florida. The GPM Core Observatory carries two instruments that show the location and intensity of rain and snow, which defines a crucial part of the storm structure – and how it will behave. The GPM Microwave Imager sees through the tops of clouds to observe how much and where precipitation occurs, and the Dual-frequency Precipitation Radar observes precise details of precipitation in 3-dimensions. Video of GPM Monitors...
September 30, 2016
GPM Finds Intense Rainfall In Matthew Rainband
Matthew rapidly intensified Thursday evening and winds increased to 100 kts (115 mph) by Friday September 30, 2016. The GPM core observatory satellite flew over Hurricane Matthew on September 20, 2016 at 0946Z (5:46 AM EDT). A rainfall analysis from GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) showed that the Matthew had heavy rainfall in the northern side of the newly formed eye wall. GPM’s radar area of coverage (...
September 27, 2016
GPM Precipitation data from Typhoon Megi
Three typhoons have battered Taiwan in the past few weeks. Super Typhoon Meranti, the strongest typhoon of the year, caused havoc as it passed to the south of Taiwan on September 14, 2016. Typhoon Malakas clipped northeastern Taiwan a few days later. Typhoon Megi has now caused injuries, deaths and destruction as it passes over northeastern Taiwan. The GPM core observatory satellite passed over on September 26, 2016 at 2231 UTC when typhoon Megi was...