Abstract: Detailed structure of the global quasi-biennial oscillation (QBO) in ozone is analyzed using Stratospheric Aerosol and Gas Experiment II ozone and nitrogen dioxide data. Emphasis is placed on the midlatitude QBO, in ...

Abstract: Temperature profiles in polar latitudes during summer reveal a strong and persistent inversion layer associated with the polar summer tropopause. This inversion layer is characterized by a temperature increase of ?8 K in ...

Abstract: ariability in tropical zonal mean temperatures over 10?30 km is analyzed based on high-quality, high-vertical-resolution GPS temperature measurements covering 2001?13. The observations are used to quantify variability ...

Abstract: Temperature trends derived from historical radiosonde data often show substantial differences compared to satellite measurements. These differences are especially large for stratospheric levels, and for data in the Tropics, ...

Abstract: Long time records of stratospheric temperatures indicate that substantial cooling has occurred during spring over polar regions of both hemispheres. These cooling patterns are coincident with observed recent ozone depletions. ...

Abstract: The dynamical balances associated with upwelling in the tropical lower stratosphere are investigated based on climatological 40-yr ECMWF Re-Analysis (ERA-40) and NCEP?NCAR reanalysis data. Zonal mean upwelling is calculated ...

Abstract: Global characteristics of the extratropical tropopause inversion layer identified in radiosonde observations by Birner are studied using high vertical resolution temperature profiles from GPS radio occultation measurements. ...

Abstract: Dynamical variability in the extratropical stratosphere occurs on a broad range of timescales, from daily to seasonal. Extratropical wave transience is correlated with variations in the mean meridional (Brewer?Dobson) ...

Abstract: Near-equatorial ozone observations from balloon and satellite measurements reveal a large annual cycle in ozone above the tropical tropopause. The relative amplitude of the annual cycle is large in a narrow vertical layer ...