HR: 1340h
AN: A23D-1569    [Abstracts]
TI: Initial High Spectral Resolution Lidar Results From the Cumulus Humilis Aerosol Processing Study (CHAPS) and Cloud and Land Surface Interaction Campaign (CLASIC)
AU: * Obland, M D
EM: Michael.D.Obland@nasa.gov
AF: NASA Langley Research Center, 100 NASA Road Mail Stop 401A, Hampton, VA 23681,
AU: Cook, A L
EM: Anthony.L.Cook@nasa.gov
AF: NASA Langley Research Center, 100 NASA Road Mail Stop 401A, Hampton, VA 23681,
AU: Ferrare, R A
EM: Richard.A.Ferrare@nasa.gov
AF: NASA Langley Research Center, 100 NASA Road Mail Stop 401A, Hampton, VA 23681,
AU: Hair, J W
EM: John.W.Hair@nasa.gov
AF: NASA Langley Research Center, 100 NASA Road Mail Stop 401A, Hampton, VA 23681,
AU: Harper, D B
EM: David.B.Harper@nasa.gov
AF: NASA Langley Research Center, 100 NASA Road Mail Stop 401A, Hampton, VA 23681,
AU: Hostetler, C A
EM: Chris.A.Hostetler@nasa.gov
AF: NASA Langley Research Center, 100 NASA Road Mail Stop 401A, Hampton, VA 23681,
AU: Rogers, R R
EM: Raymond.R.Rogers@nasa.gov
AF: Science Systems and Applications, Inc, 100 NASA Road Mail Stop 401A, Hampton, VA 23681,
AB: The Cumulus Humilis Aerosol Processing Study (CHAPS) field campaign, sponsored by the Department of Energy Atmospheric Science Program (ASP), and the Cloud and Land Surface Interaction Campaign (CLASIC), sponsored by the DOE Atmospheric Radiation Measurement (ARM) Program, were performed during June 2007, with the respective goals of studying aerosol and cloud interactions and advancing the understanding of how land surface processes influence cumulus convection in the Oklahoma City region. The campaigns involved several coordinated air- and ground-based remote and in situ sensors, including, among others, the NASA Langley Research Center (LaRC) Airborne High Spectral Resolution Lidar (HSRL) aboard the NASA King Air B-200 aircraft, instruments located at the DOE Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) Climate Research Facility (CRF), and instruments aboard the DOE Gulfstream-1, the Center for Interdisciplinary Remotely-Piloted Aircraft Studies (CIRPAS) Twin Otter, and the DOE ARM Cessna 206 aircraft. The aircraft were flown in coordinated patterns over common ground tracks on several occasions, some of which involved passing over the SGP CRF and/or were coordinated with overpasses from satellites in the A-Train constellation. These coordinated measurements enabled coincident observations of aerosol properties near clouds, facilitating analyses of cloud and aerosol interactions and properties across changing atmospheric conditions. Over the course of the CHAPS-CLASIC mission, the NASA LaRC Airborne HSRL instrument flew 22 flights obtaining nearly 70 hours of observations. The Airborne HSRL directly measured aerosol backscatter and depolarization at wavelengths of 532 nm and 1064 nm, and aerosol extinction at 532 nm, allowing for calibrated computation of the aerosol extinction-to-backscatter ratio, wavelength dependence, and depolarization ratio profiles extending from near the surface to about 8 km above ground level. An overview of the NASA LaRC HSRL mission, as well as preliminary results from the HSRL during the CLASIC/CHAPS field campaign will be presented.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0320 Cloud physics and chemistry
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting