light rain

A misty mountaintop in The Smoky Mountains
By Lisa-Natalie Anjozian, NASA Goddard Space Flight Center Original www.nasa.gov Press Release (published 4/24/12) If you walk into a cloud at the top of a mountain with a cup to slake your thirst, it might take a while for your cup to fill. The tiny, barely-there droplets are difficult to see, and for scientists they, along with rain and snow, are among the hardest variables to measure in Earth Science, says Ana Barros, professor of engineering at Duke University. As part of the Science Team for NASA's Precipitation Measurement Missions (PMM) that measure rainfall from space, Barros and her...

MicroRain Radar in the Smokies

MicroRain Radar in the Smokies
Image Caption
MicroRain Radar at Purchase Knob in the Great Smoky Mountains National Park.

This instrument is a vertical profiler radar that delivers information about structure in the atmospheric column and enables scientists to estimate the vertical distribution of rainfall. At all times of the day, light rainfall is the dominant type of precipitation. 

Light Rain in the Smokies

A misty mountaintop in the Smokies
Image Caption
Mid-morning peak in light rainfall appears as clouds and fog at Purchase Knob in the Great Smoky Mountains National Park.

Light rainfall is the most reliable and most frequent form of rainfall in the region, contributing 50 to 60 percent of the total precipitation over a year. Light rain is no less than the lifeline of freshwater resources for the landscape’s ecosystems. 

GPM and Cloudsat Researchers Meet in Helsinki to Discuss LPVEx Data

GPM and CloudSat ground validation researchers are currently meeting at the University of Helsinki to discuss strategies for analyzing airborne and ground-based datasets from the Light Precipitation Validation Experiment (LPVEx) field campaign. This data analysis will help improve satellite-based precipitation retrievals in high latitude light rain and snowfall events. Dr. Ari-Matte Hari, Director of the Radar and Space Technology Group, FMI, welcomes the group to the University of Helsinki and FMI. Learn more about the LPVEx field campaign