Tropospheric Ozone at Northern Mid-Latitudes: Modeled and Measured Long-Term Changes

Summertime ozone at northern mid-latitudes

Tropospheric ozone column retrieval at northern mid-latitudes from the Ozone Monitoring Instrument by means of a neural network algorithm

Monitoring tropospheric ozone from space is of critical importance in order to gain more thorough knowledge on phenomena affecting air quality and the greenhouse effect. Deriving information on tropospheric ozone from UV/VIS nadir satellite spectrometers is difficult owing to the weak sensitivity of the measured radiance spectra to variations of ozone in the troposphere. Here we propose an alte...

Summertime low - ozone episodes at northern high latitudes

By Y. J. ORSOLINI1∗, H. ESKES2, G. HANSEN1, U.-P. HOPPE3, A. KYLLING1, E. KYRÖ4, J. NOTHOLT5, R. VAN DER A2 and P. VON DER GATHEN6 1Norwegian Institute for Air Research, Kjeller, Norway 2Royal Netherlands Meteorological Institute, De Bilt, the Netherlands 3Norwegian Defence Research Establishment, Kjeller, Norway 4Finnish Meteorological Institute, Sodankyla, Finland 5University of Bremen, Germa...

Long-term trend of CH4 at northern mid-latitudes: Comparison between ground-based infrared solar and surface sampling measurements

We report average tropospheric CH4 volume mixing ratios retrieved from a 27 year time series of high spectral resolution infrared solar absorption measurements recorded between May 1977 and July 2004 at the US National Solar Observatory station on Kitt Peak (31:9 N; 111:6 W, 2.09 km altitude) and their comparison with surface in situ sampling measurements recorded between 1983 and 2004 at the C...

Fall vortex ozone as a predictor of springtime total ozone at high northern latitudes

Understanding the impact of atmospheric dynamical variability on observed changes in stratospheric O3 is a key to understanding how O3 will change with future climate dynamics and trace gas abundances. In this paper we examine the linkage between interannual variability in total column O3 at northern high latitudes in March and lower-tomid stratospheric vortex O3 in the prior November. We find ...