NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Lidar Temperature Measurements During the SOLVE Campaign and the Absence of PSCs from Regions of Very Cold AirNASA Goddard Space Flight Center's Airborne Raman Ozone, Temperature and Aerosol Lidar (AROTEL) measured extremely cold temperatures during all three deployments (December 1-16, 1999, January 14-29, 2000 and February 27-March 15, 2000) of the Sage III Ozone Loss and Validation Experiment (SOLVE). Temperatures were significantly below values observed in previous years with large regions regularly below 191 K and frequent temperature retrievals yielding values at or below 187 K. Temperatures well below the saturation point of type I polar stratospheric clouds (PSCs) were regularly encountered but their presence was not well correlated with PSCs observed by the NASA Langley Research Center's Aerosol Lidar co-located with AROTEL. Temperature measurements by meteorological sondes launched within areas traversed by the DC-8 showed minimum temperatures consistent in time and vertical extent with those derived from AROTEL data. Calculations to establish whether PSCs could exist at measured AROTEL temperatures and observed mixing ratios of nitric acid and water vapor showed large regions favorable to PSC formation. On several occasions measured AROTEL temperatures up to 10 K below the NAT saturation temperature were insufficient to produce PSCs even though measured values of nitric acid and water were sufficient for their formation.
Document ID
20010071126
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Burris, John (NASA Goddard Space Flight Center Greenbelt, MD United States)
McGee, Thomas (NASA Goddard Space Flight Center Greenbelt, MD United States)
Hoegy, Walt (NASA Goddard Space Flight Center Greenbelt, MD United States)
Newman, Paul (NASA Goddard Space Flight Center Greenbelt, MD United States)
Lait, Leslie (Science Systems and Applications, Inc. Greenbelt, MD United States)
Twigg, Laurence (Science Systems and Applications, Inc. Greenbelt, MD United States)
Sumnicht, Grant (Science Systems and Applications, Inc. Greenbelt, MD United States)
Heaps, William (NASA Goddard Space Flight Center Greenbelt, MD United States)
Hostetler, Chris (NASA Langley Research Center Hampton, VA United States)
Neuber, Roland (Alfred-Wegener-Inst. for Polar Research Potsdam, Germany)
Bhartia, P. K.
Date Acquired
September 7, 2013
Publication Date
January 21, 2001
Subject Category
Ground Support Systems And Facilities (Space)
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available