Scientific Aviation operates a single engine Mooney TLS that has been heavily modified for atmospheric research. Air inlets have been installed on the outboard section of the wing, well away from the exhaust and the propeller induced turbulence. Each research flight includes measurements of wind speed and direction, temperature, humidity, ozone mixing ratio, and location (latitude, longitude and altitude).
The airplane is based in Northern California but can perform research anywhere in North America. The airplane is capable of altitudes up to 25,000 feet and airspeeds between 70 and 200 knots. It can remain airborne for up to 6 hours.