Image Credit: NASA's Goddard Space Flight Center
First data visualization of the three-dimensional structure of precipitation collected by the Dual-frequency Precipitation Radar aboard the Global Precipitation Measurement (GPM) mission's Core Observatory. The image shows rain rates across a vertical cross-section approximately 4.4 miles (7 kilometers) high through an extra-tropical cyclone observed off the coast of Japan on March 10, 2014. The DPR 152-mile (245 kilometers) wide swath is nested within the center of the GPM Microwave Imager's wider observation path.
The Global Precipitation Measurement mission's Core Observatory is performing normally.
On March 12, the GPM Core Observatory fired its thrusters for a 30-second check-out of their performance. The burn, called a delta-v, changes the velocity of the spacecraft to adjust the altitude of its orbit. This week's short maneuver did not greatly alter the satellite's orbit but was used instead for further calibration of the thrusters.
Functional checkout activities and internal calibration of the Dual-frequency Precipitation Radar continued this week.
On Saturday, March 8, just after 10 a.m. EST, the second of the two science instruments aboard the Global Precipitation Measurement (GPM) mission's Core Observatory was activated, and the teams in the mission operations center and launch support room at NASA's Goddard Space Flight Center in Greenbelt, Md., began the instrument's checkout period.
Owen Kelley, research scientist at NASA Goddard Space Flight Center, discusses the science, the technology and the researcher who coined the term "hot tower" 50 years ago. During the past decade, NASA's Tropical Rainfall Measuring Mission satellite has been able to collect definitive statistics on the association of hot towers (towering thunderclouds) and hurricane intensification.
This 17 page flyer provides an overview of the GPM Mission. It describes the technologies used to measure precipitation and the missions scientific goals and societal applications.