Short-term stratospheric ozone fluctuations observed by GROMOS microwave radiometer at Bern
Publisher DOI
Abstract
The ground-based millimeter wave ozone spectrometer (GROMOS) has been continually measuring middle atmospheric ozone volume mixing ratio profiles above Bern, Switzerland (46.95°N, 7.44°E, 577 m), since 1994 in the frame of NDACC. The high temporal resolution of GROMOS (30 min) allows the analysis of short-term fluctuations. The present study analyses the temporal perturbations, ranging from 1 to 8 h, observed in stratospheric ozone from June 2011 to May 2012. The short-term fluctuations of stratospheric ozone are within 5%, and GROMOS appears to have relative amplitudes stable over time smaller than 2% at 10 hPa (32 km). The strongest natural fluctuations of stratospheric ozone (about 1% at 10 hPa) above Bern occur during winter due to displacements and deformations of the polar vortex towards mid-latitudes.
Date Issued
2018
Publication Type
Article
Subject(s)
Language(s)
en
Author(s)
Additional Credits
Journal
Earth, Planets and Space
Publisher
Springer
ISSN
1880-5981
Access(Rights)
open.access