Two-thirds of Earth's atmosphere resides over the oceans, far from land. While satellites in space collect data to measure the major gases, it takes a flight over this area to find out what's really happening in the chemistry of the air above the oceans. See how our Atmospheric Tomography flights survey this area: http://go.nasa.gov/2IU4raH | NASA - National Aeronautics and Space Administration

Weather is defined as the state of the atmosphere at a given time and place, with respect to variables such as temperature, moisture, wind speed and direction, and barometric pressure. In recent years, many Americans have experienced some form of extreme weather. In the last decade, 90% of American counties have been impacted by weather disasters. NOAA Research’s data, tools, and expertise enables everyone to have the knowledge and ability to be safer, healthier and proactively mitigate the wors