Abstract: The air ejector filter sampler is a balloon-borne device designed to collect particulate matter from very large volumes (105 ft2) of stratospheric air at altitudes between 50,000 and 130,000 ft. This equipment utilize an ...

Abstract: FLUXNET is a global network of micrometeorological flux measurement sites that measure the exchanges of carbon dioxide, water vapor, and energy between the biosphere and atmosphere. At present over 140 sites are operating ...