«The combination of bottom - up soil emission measurements and top - down airborne measurements provide strong evidence for their emission assessments,» he says. (sciencenews.org)
NASA's long - running Operation IceBridge campaign last week began a series of airborne measurements of melt ponds on the surface of the Arctic sea ice cap. (giss.nasa.gov)
The AAF provides airborne measurements required to answer research questions proposed by scientists from around the world. (arm.gov)