Chemistry and Radiation Changes in the Ozone Layer

Developments in tropospheric chemistry.- 3-D tropospheric model development:Impact of non methane hydrocarbon chemistry.- Model analysis of stratosphere-troposphere exchange of ozone and its role in the tropospheric ozone budget.- Peroxy radicals concentration and ozone generation rate for different regions of Russia as a result of TROICA-2 experiment.- Overview of concepts and results of the PAUR I and PAUR II Projects (Modulation of Solar Ultraviolet Radiation and Photochemistry by Stratospheric Ozone, aerosols and tropospheric ozone).- Global impact of aircraft emission on ozone concentrations and methane lifetime: Results from the 1999 IPCC aircraft assessment.- The impact of NOx and H2O emissions from future Sub-and Supersonic aircraft upon the chemical composition of the atmosphere (A model study using a stratospheric CTM).- Calculations of radiative forcing from ozone change.- Atmospheric ozone as a climate gas: Studies concerning aircraft emissions.- Tropospheric aerosol formation: Processes observations and simulations.- Background levels of atmospheric particulate matter over the Northeast Atlantic ocean.- The effect of aerosol on UV flux at the Earth’s surface.- A simplified spectral model for UV irradiance computations.- Observed long-term ozone and UV changes.- Variability of daily and annual cycles of mean erythemal solar irradiance related to total ozone variability.- UV irradiance patterns in Italy.- Calibration and characterization of erythemal broadband detectors.- Chemistry and radiation changes in the ozone layer [Halogenated hydrocarbons (halocarbons) and their impact on stratospheric ozone].- Springtime stratospheric ozone over Marambio, Antarctic during 1990-1998. (Analysis of ozone sonde data in relation the phase and position of polarvortex).- Stratospheric CLO across the edge of the Arctic polar vortex: Measurements of the Airborne-Submillimeter SIS Radiometer compared to 3-D model calculations.- Vertical profiles of long lived trace gases. (A basis for the analysis of stratospheric dynamics).- Study of the Arctic polar vortex erosion from ozone Lidar measurements performed at OHP (44N, 6E).- APE-GAIA Airborn Polar Experiment - Geophysica Aircraft in Antarctica.- Heterogeneous processes in the atmosphere.- Kinetics and mechanism of homogeneous reactions of halomethanes with chlorine atoms.- NASA’s experience in deriving total ozone from satellites.- Satellite observations of tropospheric and stratospheric gases.- Monte Carlo simulations of radiative transfer for LIMB scan measurements.- Performances of the near real time code for MIPAS data analysis.- Aerosol retrieval algorithm for satellite solar occulation and infrared emission measurements: Theory and 3-D analysis.- An “intermediate” general circulation model for ozone change studies.- Numerical study of possible influence of longitudinal ozone inhomogeneities on dynamics of the middle atmosphere.- Investigation on different total ozone time scale components.- List of Lecturers.- List of Participants.