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Did you know?

Rainfall releases three times more energy into Earth's atmosphere than sunlight. NASA is accurately measuring global rainfall to better understand a key factor driving climate change.
+Find out more.


Related Sites:

Dot National Weather Service

Dot National Oceanic and Atmospheric Admin.--Weather

Dot National Oceanic and Atmospheric Admin.--Climate

 
Weather

Weather and Climate Weather affects us every day. It influences our choice of clothing and activities, and even our state of mind. Weather has an enormous impact on the economy, food supplies and transportation. And when it turns nasty, it can bring extreme hardship and destruction.

Making accurate weather forecasts is critical but very difficult. It requires a highly precise and global understanding of the atmosphere, oceans and land. Slight discrepancies in temperatures, humidity or winds in computer models can cause large discrepancies in forecasts.

Hurricane Dora building force in the Pacific Ocean, August 10, 1999.
Hurricane Dora building force in the Pacific Ocean, August 10, 1999.
The National Weather Service, part of the National Oceanic and Atmospheric Administration (NOAA), operates many of the satellites that provide meteorologists with the information and images they need to forecast weather. NASA and JPL also build and fly instruments that accurately observe specific components of weather, such as temperature, clouds and winds. NOAA and other scientists use this data to improve forecasts and learn more about how Earth's weather and climate system works.

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Missions & Projects:

Atmospheric Infrared Sounder Atmospheric Infrared Sounder
   This instrument is to be flown aboard NASA's Aqua satellite to make highly accurate measurements of air temperature, humidity, clouds and surface temperatures.
Multi-Angle Imaging SpectroRadiometer (MISR) Multi-Angle Imaging SpectroRadiometer (MISR)
   Using its nine cameras pointed at nine different angles, MISR studies how sunlight and energy interact with the air and surface to monitor clouds, dust, volcanic ash and surface changes.
SeaWinds on QuikScat SeaWinds on QuikScat
   The SeaWinds instrument monitors winds over the oceans. This data can be used by storm trackers, scientists, sailors and oil-rig operators.
image from Tropical Rainfall Measuring Mission Tropical Rainfall Measuring Mission
   Learn how JPL supports the Tropical Rainfall Measuring Mission, managed by NASA's Goddard Space Flight Center.
Weather at JPL Weather at JPL
   JPL's very own weather station gives our local forecast.
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