Science

Above image: Attendees of the 2023 PMM Science Team Meeting.

The Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Storms ( IMPACTS ) mission, now in its second year, is flying aircraft into snowstorms in order to improve meteorological models and our ability to use satellite data to predict how much snow will fall and where. NASA and its partners have several satellites that measure precipitation from space, such as the Global Precipitation Measurement (GPM) mission that observes rain and snow around most of the world every three hours. “But satellites can’t tell us a lot about the particles – the actual snowflakes ­– and

Presentations and Posters Monday, November 1st Session 1: Programatics / PMM Business (Chair: A. Hou) 8:00 - 8:30 PMM Science A. Hou Download 8:30 - 8:50 TRMM Science S. Braun Download 8:50 - 9:10 GPM Project A. Azarbazin Download 9:10 - 9:30 PPS E. Stocker Download 9:30 - 9:50 X-Callibration Status T. Wilheit Download 9:50 - 10:10 Working Group Organization G. S.-Jackson Download Session 2: Partner Reports (Chair: C. Kummerow) 10:40 - 11:00 NOAA R. Ferraro Download 11:00 - 11:20 ESA Proposal: Polar Precipitation Mission C. Kidd / P. Joe Not Available 11:20 - 11:50 PPM related activities in

Presentations Monday, March 18th Session 1: Programmatics (Chair: S. Braun/A. Hou) 8:00 – 8:05 NASA HQ PMM Welcome and Program Status R. Kakar Download 8:05 – 8:25 NASA HQ Perspective J. Kaye Not Available 8:25 – 8:45 NASA PMM Science A. Hou Download 8:45 – 9:05 NASA TRMM Science S. Braun Download 9:05 – 9:25 NASA GPM Project A. Azarbarzin Download 9:25 – 9:45 Precipitation Processing System (PPS) E. Stocker Download 10:15 – 10:35 JAXA TRMM/GPM Program Status R. Oki Download 10:35 – 10:55 JAXA TRMM Science Status Y. Takayabu Download 10:55 – 11:15 JAXA GPM Science Status K. Nakamura Download

Presentations Tuesday, August 5th Session 1: Programmatics (Chair: S. Braun/G. Jackson) 8:00 - 8:05 NASA HQ PMM Welcome and Program Status R. Kakar 8:05 - 8:25 NASA HQ Perspective M. Freilich 8:25 - 8:45 NASA PMM Science G. Jackson 8:45 - 9:05 NASA TRMM Science S. Braun 9:05 - 9:20 NASA GPM Project and GMI Sensor Status A. Azarbarzin 9:20 - 9:40 Precipitation Processing System (PPS) E. Stocker 9:40 - 10:00 GPM’s Application Science and EPO D. Kirschbaum 10:30 - 10:45 JAXA TRMM/GPM Program Status R. Oki 10:45 - 11:00 DPR Sensor Status K. Furukawa 11:00 - 11:15 JAXA TRMM Science Status N

During the summer, the U.S. Great Plains routinely experiences nighttime thunderstorms unlike anywhere else in the country. These large-scale storms—sometimes spanning entire states—account for more than 40 percent of annual rainfall in some areas. They can bring much-needed rain to farms and help recharge aquifers, but extremely severe events can also destroy fields, homes, and lives. Scientists have been studying the region for decades to learn the underpinnings of this distinct, repetitive weather pattern.

Lake Victoria is the largest lake in Africa and an economic and food security lifeline for roughly 30 million people living near its shores in Uganda, Kenya, and Tanzania. But it also takes lives. Cyclical, daily weather patterns around the lake create violent nighttime thunderstorms that kill roughly 3,000 to 5,000 fishermen per year. “This is definitely one of the stormiest places on Earth,” said Wim Thiery, a climate scientist at the Vrije Universiteit Brussel who has studied Lake Victoria for several years. “Almost every night, you see these intense thunderstorms and sometimes even water