GTE
type: Concept
change note: 2013-05-08 13:36:28.0 [aaleman] Move Concepts delete narrower relation (null);
change note: 2013-05-08 13:36:19.0 [aaleman] Move Concepts add narrower relation (GTE [d1716350-adab-4692-9be1-d5ef17022499,80131] - IPY-GEOTRACES [1cd198c7-799e-4d06-a404-5cb706e6bfea,77963]);
in scheme: projects
definition: Scientific Objectives: This program will study the -biological sources of atmospheric chemicals -global distribution and long-range transport of chemical species -reactions in the troposphere that lead to the conversion, redistribution, and removal of atmospheric chemicals Project Description: The National Academy of Sciences in 1984 recommended initiation of a Global Tropospheric Chemistry Program (GTCP), in recognition of the central role of tropospheric chemistry in global change. The resources required are distributed among several federal agencies, scores of universities, and a variety of scientific disciplines-- including atmospheric science, biology, land processes, and oceanography. NASA's contribution to the GTCP is the Global Tropospheric Experiment (GTE), which utilizes large, extensively instrumented aircraft, along with satellite observations of meteorology, land use, and atmospheric chemical species to aid in experiment design and in the scientific analysis of results obtained from aircraft and ground-based measurements. The first series of projects carried out under the GTE was the Chemical Instrumentation Test and Evaluation (CITE) projects which exposed instruments aboard aircraft to a wide range of conditions in both polluted and and clean-air settings. CITE-1 was conducted in 1983 and consisted of a ground-based experiment at Wallops Island, Virginia and aircraft-based over California, southwestern U.S. and the central Pacific Ocean. CITE-2 was conducted in 1986 over California and the eastern Pacific, and CITE-3 was conducted in 1989 over Wallops Island, Virginia and the tropical Atlantic off the coast of Brazil. The advanced instruments validated by CITE have been used to carry out GTE field measurements. The initial field expeditions, the Atmospheric Boundary Layer Experiment (ABLE) projects, were designed to probe the interactions between the biosphere and the atmosphere. They measured the fluxes of gases between the surface and the atmospheri…

G - I
type: Concept