FIRE III: An Arctic Cloud Study
chercheur principal: Isaac, George (1)
Nᵒ de permis: 12953
Organisation: Environment Canada
Année(s) de permis: 1998
Délivré: avr. 06, 1998

Objectif(s): Arctic clouds are dominant on average covering 40 to 60% of the skies over the Arctic ocean. They exert a large influence on the radiation balance in the Arctic, where climate change effects are predicted and observed to be largest in the northern hemisphere. The FIRE III field project will use in-situ measurements obtained using instrumental aircraft, in combination with concurrent satellite dta, and conventional surface observations to develop better parameterizations for use in GCM's. The results will also be used for increasing our knowledge of Arctic clouds, and their effect on atmospheric processes.

Description du projet: Arctic clouds are dominant on average covering 40 to 60% of the skies over the Arctic ocean. They exert a large influence on the radiation balance in the Arctic, where climate change effects are predicted and observed to be largest in the northern hemisphere. The FIRE III field project will use in-situ measurements obtained using instrumental aircraft, in combination with concurrent satellite dta, and conventional surface observations to develop better parameterizations for use in GCM's. The results wil also be used for increasing our knowledge of Arctic clouds, and their effect on atmospheric processes. NRC Convair 580 aircraft will be used to gather data. A LIDAR (laser radar) will be used for remote sensing studies of clouds over the ocean and sea ice and will not be operated over land. Because of the altitude used for data collection, the LIDAR will not affect people at the surface. Detailed descriptions can be found on the WEB page at asd-www.larc.nasa.gov/fire/index.html.