Tropopause height at 78° N 16° E: average seasonal variation 2007–2010
نویسندگان
چکیده
منابع مشابه
Circulation Sensitivity to Tropopause Height
The possibility that the tropopause could be lower during an ice-age cooling leads to an examination of the general sensitivity of global circulations to the tropopause height by altering a constant stratospheric temperature Ts in calculations with a dry, global, multilevel, spectral, primitive equation model subject to a simple Newtonian heating function. In general, lowering the tropopause by...
متن کاملSeasonal variation of equatorial wave momentum fluxes at Gadanki ( 13 . 5 ◦ N , 79 . 2 ◦ E )
The vertical flux of the horizontal momentum associated with the equatorial Kelvin and Rossby-gravity waves are estimated from the winds measured by the Indian MST radar located at Gadanki (13.5 • N, 79.2 • E) during September 1995 to August 1996 in the tropospheric and lower stratospheric regions for all four seasons. The present study shows that momentum flux values are greater during equinox...
متن کاملDetermining the tropopause height from gridded data
[1] A method is presented to determine tropopause height from gridded temperature data with coarse vertical resolution. The algorithm uses a thermal definition of the tropopause, which is based on the concept of a ‘‘threshold lapse-rate’’. Interpolation is performed to identify the pressure at which this threshold is reached and maintained for a prescribed vertical distance. The method is verif...
متن کاملIntraseasonal Variability of the Zonal-Mean Extratropical Tropopause Height
The physical processes that drive the fluctuations of the extratropical tropopause height are examined with the National Centers for Environmental Prediction–National Center for Atmospheric Research (NCEP–NCAR) reanalysis data. A composite zonal-mean heat budget analysis for the Northern Hemisphere winter shows that fluctuations in the extratropical tropopause height result not only from a warm...
متن کاملGCM Tests of Theories for the Height of the Tropopause
The sensitivity of the tropopause height to various external parameters has been investigated using a global circulation model (GCM). The tropopause height was found to be strongly sensitive to the temperature at the earth’s surface, less sensitive to the ozone distribution, and hardly sensitive at all to moderate changes in the earth’s rotation rate. The strong sensitivity to surface temperatu...
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ژورنال
عنوان ژورنال: Atmospheric Chemistry and Physics
سال: 2011
ISSN: 1680-7324
DOI: 10.5194/acp-11-5485-2011