HR: 0830h
AN: A41D-0709    [PDF]
TI: Preliminary Evaluation of Version 6.2 SAGE II Water Vapor Data Set: Comparison With ATMOS/ATLAS-3 Measurements
AU: * CHIOU, E
EM: e.chiou@larc.nasa.gov
AF: SAIC Corporation, Mail STOP 475, NASA Langley, Hampton, VA 23681 United States
AU: Chu, W P
EM: w.p.chu@larc.nasa.gov
AF: Atmospheric Sciences Competency, NASA Langley, Mail STOP 475, NASA Langley, Hampton, VA 23681 United States
AU: Thomason, L W
EM: l.w.thomason@larc.nasa.gov
AF: Atmospheric Sciences Competency, NASA Langley, Mail STOP 475, NASA Langley, Hampton, VA 23681 United States
AU: Burton, S P
EM: s.p.burton@larc.nasa.gov
AF: SAIC Corporation, Mail STOP 475, NASA Langley, Hampton, VA 23681 United States
AU: Michelsen, H A
EM: hamicle@ca.sandia.gov
AF: Sandia National Laboratories, P.O.Box 969, Livermore, CA 94551 United States
AB: Acurate long-term profile measurements of stratospheric water vapor are needed to better understand possible changes that may have occurred over the past 20 years and its effect on the ozone distribution. The SAGE II satellite instrument has been obtaining water vapor measurements of the middle atmosphere since its launch in 1984. Previous versions of the SAGE II water vapor data reveal dry biases near the hygropause compared to other measurement system that can be as large as 40 % in mid latitudes. Comparisons with a new version of the SAGE II water vapor data set (Version 6.2) and other data sets show much better agreement over a broad range of latitudes and over different seasons. This paper will focus on comparisons between SAGE II and ATMOS/ATLAS-3 (Version 3), which flew on Space Shuttle in November 1994. Results will be shown from comparisons using individual pair coincidences and zonal averages.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting