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Water vapor and cloud water measurements over Darwin during the STEP 1987 tropical missionMeasurements of stratospheric and upper tropospheric cloud water plus water vapor (total water) and water vapor were made with two Lyman alpha hygrometers as part of the STEP tropical experiment. The in situ measurements were made in the Darwin, Australia, area in January and February of 1987 on an ER-2 aircraft. Average stratospheric water vapor at a potential temperature of 375 K (the average value of Theta at the tropopause) was 2.4 parts per million by volume (ppmv). This water mixing ratio is below the 3.0 to 4.0 ppmv necessary to be consistent with the observed upper stratospheric dryness. Saturation with respect to ice and the potential for dehydration was observed up to Theta = 402 K.
Document ID
19930057252
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kelly, K. K.
(NASA Ames Research Center Moffett Field, CA, United States)
Proffitt, M. H.
(NOAA, Aeronomy Lab. Boulder, CO, United States)
Chan, K. R.
(NASA Ames Research Center Moffett Field, CA, United States)
Loewenstein, M.
(NASA Ames Research Center Moffett Field, CA, United States)
Podolske, J. R.
(NASA Ames Research Center Moffett Field, CA, United States)
Strahan, E.
(Princeton Univ. NJ, United States)
Wilson, J. C.
(Denver Univ. CO, United States)
Kley, D.
(Forschungszentrum Juelich GmbH Germany)
Date Acquired
August 16, 2013
Publication Date
May 20, 1993
Publication Information
Publication: Journal of Geophysical Research
Volume: 98
Issue: D5
ISSN: 0148-0227
Subject Category
Meteorology And Climatology
Accession Number
93A41249
Distribution Limits
Public
Copyright
Other

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