Short-term stratospheric ozone fluctuations observed by GROMOS microwave radiometer at Bern
نویسندگان
چکیده
The ground-based millimeter wave ozone spectrometer (GROMOS) has been continually measuring middle atmospheric ozone volume mixing ratio profiles above Bern, Switzerland (46.95N, 7.44E, 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.
منابع مشابه
Response to anonymous referee #1
Stratospheric and middle mesospheric ozone profiles have been continually measured by the GROMOS (GROundbased Millimeter-wave Ozone Spectrometer) microwave radiometer since 1994 above Bern, Switzerland (46.95◦N, 7.44◦E, 577 m). GROMOS is part of the Network for the Detection of Atmospheric Composition Change (NDACC). A new version for the retrieval of ozone profiles of the ozone profile retriev...
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