The summer deployment of the Arctic Research of the Composition
of the Troposphere from Aircraft and Satellites (ARCTAS) mission
will target the effects of boreal forest fires, stratosphere-troposphere
exchange, and summertime photochemistry on the arctic atmosphere.
Summertime boreal fires are a major atmospheric perturbation to
the Arctic. Smoke emissions have a direct influence on the radiation
budget and exert indirect influence through impact on cloud processes.
Deposition of pyrogenic black carbon to snow and ice surfaces decreases
surface albedo and may accelerate melting. In addition, chemistry
in the fire plumes leads to formation of tropospheric ozone, which
exerts a significant climate forcing in the Arctic.
Using in situ measurements in conjunction with satellite data,
ARCTAS can come one step closer in understanding the cause and
the effect of these issues.
For more information about ARCTAS from Researcher News, visit:
For the ARCTAS Project home page hosted by the Earth Science Project Office(ESPO)
at NASA Ames, visit: http://www.espo.nasa.gov/arctas/
Funding for the deployment of the NASA King Air was provided by NASA and the Department of Energy (DOE) Atmospheric Science Program.
Logistical support was provided by NOAA ESRL. The information contained herein is provided as a public service, with the understanding
that NASA, DOE, NOAA, and the ARCTAS project collaborators make no warranties, either expressed or implied, concerning the
accuracy, completeness, reliability, or suitability of the information. Do not quote or cite without permission. Permission for use of
these data and additional information may be obtained from the investigating scientists: Chris Hostetler, Richard Ferrare, or John Hair.
The data are preliminary and subject to change.