Image from TERRA
Mon, 11 Jul 2022 09:30 EDT

Ozone pollution assessments made for the Great Lakes region now include NASA satellite and other near-real time Earth observations.

Image from TERRA
Wed, 15 Jun 2022 11:00 EDT

A NASA-supported research program brings together goat herders, the luxury fashion industry, a gold mining company and Stanford University to use Earth observations to support more sustainable grazing practices.

Image from TERRA
Thu, 30 Dec 2021 13:00 EST

In 2021, Hurricane Ida left over 1 million people without power, tornadoes tore across the American Midwest, volcanoes forced people to evacuate their homes, wildfires covered the American West and unusual flooding wreaked havoc on Central Europe.

Weather

Weather–day-to-day temperature and rainfall–plays an important role in human activities. Weather controls crop growth. It can impact transportation infrastructure and destroy homes and other structures. Accurate weather predictions can help decision makers save lives and property.

NASA develops new technologies that offer unique insight into weather and the processes that generate it. NASA scientists study weather processes to gain a more complete understanding of the Earth system. Advanced technology and greater scientific understanding of weather processes together improve weather forecasts made by operational agencies like the NOAA National Weather Service.

Terra and Weather

Terra data contribute to understanding and predicting weather phenomena. MODIS and MISR provide observations of water vapor, winds and cloud movement that are used to track motion in the atmosphere (atmospheric motion vectors) and improve weather forecasts.

Polar Winds

MODIS provides the only high-resolution satellite measurement of water vapor, which can be used with MODIS infrared measurements to observe winds in polar regions. Since Terra is in a polar orbit, MODIS collects observations over the poles every 100 minutes. By tracking how water vapor and clouds move between orbits, scientists can determine wind speed and direction. Such measurements increase the accuracy of numerical weather models used to make 10-day forecasts.

See Polar wind data blow new life into forecasts.

Wind Fields

MISR’s multi-angle stereo view can be used to track cloud motion and deduce wind speed and direction. In particular, MISR measurements provide insight into how wind speeds vary inside hurricanes of different sizes.

Terra Science on Weather in the News