Dr
Aleksandr Gruzdev
(A.M. Obukhov Institute of Atmospheric Physics)
13/03/2017, 17:30
poster
An autocorrelation, or serial correlation, affects values of regression coefficients and their confidence intervals estimated from a linear multiple-regression model. Usual way to account for the autocorrelation is the iterative Cochrane-Orcutt procedure that assumes that residuals (errors) are a 1-st order autoregressive process. Applying this procedure one assumes that it converges to a...
Dr
Sophie Godin-Beekmann
(LATMOS/OVSQ, CNRS, UVSQ)
13/03/2017, 17:30
poster
Various measurement techniques have been deployed for the monitoring of ozone vertical distribution at Haute-Provence Observatory (44°N, 6°E) within the Network for the Detection of Atmospheric Composition Changes (NDACC) since the 1980s. These techniques include ozone lidars, balloon soundings and Dobson Umkehr measurements. This presentation will review the performance of the various...
Eliane Maillard Barras
(MeteoSwiss)
13/03/2017, 17:30
poster
The microwave radiometer (MWR) SOMORA, operated continuously since 2000 in the framework of the NDACC, is measuring ozone profiles from the stratosphere up to the lower mesosphere with a temporal resolution of 30 min to 1h, providing a dataset which suits to the investigation of the annual and seasonal fluctuations as well as of the diurnal variations of the stratospheric ozone profiles. The...
Dr
Massimo Valeri
(University of Bologna - Department of Physics and Astronomy)
13/03/2017, 17:30
poster
The largest part of the Earth's atmosphere ozone is located in the stratosphere, forming the so-called ozone layer. This layer played a key role in the development of life on Earth and still protects the planet from the most dangerous ultraviolet radiation. After the discovery of the high ozone depletion potential of some anthropogenic origin substances (e.g. chlorofluorocarbons), some...
Mrs
Stacey Frith
(SSAI)
13/03/2017, 17:30
poster
We use a monte carlo approach to estimate the uncertainty resulting from the merging process in the SBUV-based merged profile ozone data record (SBUV MOD). This is a continuation of a similar analysis approach applied to the total ozone MOD data set (Frith et al., 2014).
Differences between the individual SBUV records are larger in the profile, as they tend to cancel in the column total....
Dr
Daan Hubert
(BIRA-IASB)
13/03/2017, 17:30
MIDI
poster
Prof.
Christos Zerefos
(Academy of Athens)
13/03/2017, 17:30
poster
In view of differences found in earlier papers between trends in the lower and upper stratosphere, the presentation focuses on the intercomparison between model and observations. Results will be presented for the limited period from 1997 to 2011 comparing deseasonalized and de-QBOed lidar and SBUV/2 overpasses at Haute-Provence, Hohenpeissenberg, Table Mountain, Mauna Loa and Lauder with model...
Dr
Kai-Lan Chang
(NOAA)
13/03/2017, 17:30
ROAST
poster
In year 2016, total column ozone levels continue to be influenced by the remaining levels of the man-made ozone depleting substances in the atmosphere. Ozone recovery is a much more subtle process as compared to the ozone depletion of the 1980s. The quality of ozone observations is important for understanding and interpreting of the trends. The interannual ozone variability is driven by...
