We present a novel technique to retrieve ozone profiles, and especially, tropospheric ozone (O3) from airborne Ultraviolet-Visible (UV) spectrometer measurements. The profile retrieval is possible by viewing a variety of zenith angles from down-looking and up-looking directions, taking advantage of O3 absorption in the Huggins (300-340 nm) and the Chappuis bands (530-650 nm). Measurements are n...

The coupling of chemistry with atmospheric transport processes provides a mechanism for local and regional pollution from heavily populated continental regions to influence tropospheric composition at hemispheric and global scales. In this study we use the FRSGC/UCI 3-D chemical transport model to quantify the impact of ozone precursors from anthropogenic sources in the United States, Europe an...

[1] We use the GEOS-Chem chemical transport model to interpret observations of tropospheric ozone from the Tropospheric Emission Spectrometer (TES) satellite instrument in summer 2005. Observations from TES reveal elevated ozone in the middle troposphere (500–400 hPa) across North Africa and the Middle East. Observed ozone abundances in the middle troposphere are at a maximum in summer and a mi...

[1] Various in situ measurements show evidence of new particle formation over a wide range of latitudes in the middle to upper troposphere and lower stratosphere. However, the exact mechanism of new particle formation is still uncertain. Using a combination of satellite-derived brightness temperature, air parcel backward trajectory information, in situ measurements of aerosol and precursor gase...

Previous studies in East Asia have revealed that the short-term associations between tropospheric ozone and daily mortality rate were strongest in winter, which is opposite to the findings in North America and Western Europe. Therefore, we investigated the season-varying association between ozone and daily mortality rate in 21 cities of East Asia from 1979 to 2010. Time-series Poisson regressio...

Numerous experiments have demonstrated reductions in the yields of cereal crops due to tropospheric O(3), with losses of up to 25%. However, the only British econometric study on O(3) impacts on winter wheat yields, found that a 10% increase in AOT40 would decrease yields by only 0.23%. An attempt is made here to reconcile these observations by developing AOT40 maps for Great Britain and matchi...

Several short-lived pollutants known to impact Arctic climate may be contributing to the accelerated rates of warming observed in this region relative to the global annually averaged temperature increase. Here, we present a summary of the short-lived pollutants that impact Arctic climate including methane, tropospheric ozone, and tropospheric aerosols. For each pollutant, we provide a descripti...

Mid-latitude Tropospheric Ozone Columns from the MOZAIC program: climatology and interannual variability R. M. Zbinden, J.-P. Cammas, V. Thouret, P. Nedelec, F. Karcher, and P. Simon Laboratoire d’Aerologie, UMR5560, Toulouse, France CNRM, Meteo-France, Toulouse, France Received: 21 February 2005 – Accepted: 4 April 2005 – Published: 29 July 2005 Correspondence to: R. M. Zbinden ([email protected]...

[1] We describe a broad resolution of the ‘‘Atlantic Parado’’ concerning the seasonal and geographic distribution of tropical tropospheric ozone. We highlight periods of significant maximum tropospheric O3 for Jan.– April, 1999, exploiting satellite estimates and SHADOZ (Southern Hemisphere Additional Ozonesondes). Trajectory analyses connecting sondes and Total Tropospheric Ozone (TTO) maps su...

We present a new algorithm based on the iterative spectral fitting technique for direct retrieval of nitrogen dioxide (NO2) vertical columns from hyperspectral satellite measurements, and a new spatial technique for separating the stratospheric and tropospheric contributions to the total NO2 vertical columns. This direct vertical column fitting (DVCF) algorithm allows more complete treatment of...