Observing the Vertical Branch of the Mesospheric Circulation at lat N 60° Using Ground Based Measurements of CO and H2O
Journal article, 2005

In this report daily ground-based measurements of vertical profiles of CO and H2O from 2002 are used to trace the vertical movement of air caused by the seasonally varying mean meridional circulation. In the spring (days 100-130) the estimated ascending velocity is found to vary with time and altitude from about between 250 m/day at 65 km altitude on day 100 to a maximum of similar to 450 m/day at 85-90 km altitude on day 130. In the late summer and fall the descending velocity goes from 0 (when the downwelling starts) to similar to 250 m/day at 75 km day 280. The mesospheric adiabatic temperature changes caused by the vertical movement of air are compared to mesopause temperature as estimated by the radiance of the Meinel band OH airglow.

Author

Peter Forkman

Chalmers, Department of Radio and Space Science, Global Environmental Measurements

Patrick Eriksson

Chalmers, Department of Radio and Space Science, Global Environmental Measurements

Donal Murtagh

Chalmers, Department of Radio and Space Science, Global Environmental Measurements

Journal of Geophysical Research

0148-0227 (ISSN)

Vol. 110 D5 1-11

Subject Categories

Physical Sciences

DOI

10.1029/2004JD004916

More information

Created

10/7/2017