EarthRef.org Reference Database (ERR)
Development and Maintenance by the EarthRef.org Database Team

Detailed Reference Information
Vömel et al. 1995
Vömel, H., Oltmans, S.J., Kley, D. and Crutzen, P.J. (1995). New evidence for the stratospheric dehydration mechanism in the equatorial Pacific. Geophysical Research Letters 22: doi: 10.1029/95GL02940. issn: 0094-8276.

Water vapor profile measurements obtained in the western and central Pacific during the Central Equatorial Pacific Experiment (CEPEX) show a strong connection between the water vapor content near the tropopause and areas of deep convection. We show that air ascending within deep convective towers can be dried to mixing ratios below 1 part per million by volume (ppmv), which is much lower than the average mixing ratio observed in the stratosphere. A sharp increase of water vapor mixing ratio above the tropopause is an indication of the evaporation of ice particles at the top of deep convective cells. A mixed layer of up to around 1 km thickness above the tropopause in the regions of deep convection is indicated by the vertical profiles of ozone, water vapor, and potential temperature. Furthermore, a local maximum was observed at 20 km, which is an indication for the seasonal cycle of the tropopause temperature. ¿ American Geophysical Union 1995

BACKGROUND DATA FILES

Abstract

Keywords
Atmospheric Composition and Structure, Middle atmosphere—composition and chemistry, Meteorology and Atmospheric Dynamics, Convective processes, Meteorology and Atmospheric Dynamics, Stratosphere/troposphere interactions
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
2000 Florida Avenue N.W.
Washington, D.C. 20009-1277
USA
1-202-462-6900
1-202-328-0566
service@agu.org
Click to clear formClick to return to previous pageClick to submit