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Record 1 of 270
Vertical constituent transport in the mesosphere
Author and Affiliation:
Strobel, Darrell F.(Science Applications International Corp., McLean, VA, Johns Hopkins University)
Summers, Michael E.(Johns Hopkins University, Baltimore, MD, United States)
Bevilacqua, Richard M.(U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC, United States)
Deland, Matthew T.(U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC, Bendix Field Engineering Corp.,)
Allen, Mark(California Institute of Technology, Jet Propulsion Laboratory, Pasadena, United States)
Abstract: Ground-based microwave spectroscopy measurements of mesospheric CO and H2O vertical mixing ratio profiles are used to infer vertical mixing rates in the upper mesosphere. The CO and H2O data consistently imply vertical eddy diffusion coefficients in the 70- to 85-km region of 100,000-200,000 sq cm/s during spring through summer at midlatidues. Although chemical acceleration of vertical transport is substantial for O and O3, below the mesopause, the divergences of their associated fluxes are modest, with at most a factor of 2 effect on the concentrations of O and O3 for measured variability in gravity wave activity. Comparison of Solar Mesosphere Explorer (SME) O3 data with model results reinforces the conclusions of slow vertical mixing in the upper mesosphere as a consequence of the reduced HO(x) catalytic loss of odd oxygen. The changes in chemical rate constants recommended by Rusch and Eckman (1985), in conjunction with slow vertical mixing, yield good agreement with SME O3 data. The slow vertical mixing deduced in this study is consistent with upper limits obtained from studies of the mesospheric heat budget and could be construed as evidence for an advectively controlled mesosphere. A comparison of the vertical eddy diffusion coefficients for momentum stresses, constituent transport, and heat transport suggests that the eddy Prandtl number must be of order 10.
Publication Date: Jun 20, 1987
Document ID:
19870059211
(Acquired Nov 28, 1995)
Accession Number: 87A46485
Subject Category: GEOPHYSICS
Document Type: Journal Article
Publication Information: Journal of Geophysical Research (ISSN 0148-0227); 92; 6691-669
Publisher Information: United States
Contract/Grant/Task Num: NAGW-826; NAG5-796
Financial Sponsor: NASA; United States
Organization Source: Science Applications International Corp.; McLean, VA, United States
Johns Hopkins Univ.; Baltimore, MD, United States
Hulburt (E. O.) Center for Space Research; Washington, DC, United States
Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Bendix Field Engineering Corp.; Oxon Hill, CA, United States
Description: 8p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ATMOSPHERIC MODELS; GAS TRANSPORT; MESOSPHERE; MICROWAVE SPECTRA; TURBULENT DIFFUSION; VERTICAL DISTRIBUTION; CARBON MONOXIDE; OXYGEN ATOMS; OZONE; SOLAR MESOSPHERE EXPLORER; WATER VAPOR
Imprint And Other Notes: Journal of Geophysical Research (ISSN 0148-0227), vol. 92, June 20, 1987, p. 6691-6698.
Availability Source: Other Sources
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