The U.S. government is closed. This site will not be updated; however, NOAA websites and social media channels necessary to protect lives and property will be maintained.

To learn more, visit commerce.gov.

For the latest forecasts and critical weather information, visit weather.gov.

STRAT (Stratospheric Tracers of Atmospheric Transport)

strat logo
Duration May 1995 - October, 1996
Platform NASA ER-2 Aircraft
Locations Moffett Field, California
Barber's Point, Hawaii

The primary goal of the Stratospheric Tracers of Atmospheric Transport (STRAT) campaign was to determine global-scale transport rates and future atmospheric distributions of emissions from a proposed fleet of high-altitude civilian aircraft. Transport rates determined from measured latitude and altitude profiles of gases with a wide range of lifetimes helped to refine atmospheric models used to predict the environmental impacts of aircraft emissions. ACATS-IV measured 10 different tracers with lifetimes ranging from 3 to 120 years.

NASA has a web site presenting some other details of the STRAT mission.