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Dial Measurements of Free-Tropospheric Ozone Profiles in Huntsville, ALA tropospheric ozone DIfferential Absorption Lidar (DIAL) system has been developed jointly by NASA and the University of Alabama at Huntsville (UAH). Two separated Nd:YAG pumped dye laser systems produce the laser pulses with wavelengths of 285 and 291 nm at 20 Hz frequency. The receiver is a Newtonian telescope with a 40 cm primary and a two-channel aft optics unit. The detection system currently uses photon counting to facilitate operations at the maximum achievable altitude. This lidar measures free-tropospheric ozone profiles between 4-10 km at Regional Atmospheric Profiling Laboratory for Discovery (RAPCD) in UAH campus (ASL 206 m) under both daytime and nighttime conditions. Frequent coincident ozonesonde flights and theoretical calculations provide evidence to indicate the retrieval accuracy ranges from approx.5% at 4 km to approx.60% at 10 km with 750-m vertical resolution and 30-minute integration. Three Hamamatsu 7400 PMTs and analog detection technique will be added on the current system to extend the measurement to approx.100 m above ground to monitor the PBL and lower tropospheric ozone variations.
Document ID
20080036562
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Newchurch, Mike (Alabama Univ. Huntsville, AL, United States)
Kuang, Shi (Alabama Univ. Huntsville, AL, United States)
Burris, John (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Johnson, Steve (NASA Marshall Space Flight Center Huntsville, AL, United States)
Long, Stephanie (Alabama Univ. Huntsville, AL, United States)
Date Acquired
August 24, 2013
Publication Date
June 23, 2008
Subject Category
Geophysics
Meeting Information
Meeting: 24th International Laser Radar Conference (ILRC)
Location: Fort Lauderdale, FL
Country: United States
Start Date: June 23, 2008
End Date: June 27, 2008
Sponsors: University Corp. for Atmospheric Research
Distribution Limits
Public
Copyright
Public Use Permitted.

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