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Ozone air quality during the 2008 Beijing Olympics: effectiveness of emission restrictions
Ozone air quality 2008 Beijing Olympics effectiveness emission restrictions
2009/8/7
A series of aggressive measures was launched by the Chinese government to reduce pollutant emissions from Beijing and surrounding areas during the Olympic Games. Observations at Miyun, a rural site 10...
First steps towards the assimilation of IASI ozone data into the MOCAGE-PALM system
assimilation IASI ozone data MOCAGE-PALM system
2009/8/7
With the use of data assimilation, we study the quality of the Infrared Atmospheric Sounding Interferometer (IASI) total ozone column measurements. The IASI data are provided by the inversion of IASI ...
Modelling chemistry over the Dead Sea: bromine and ozone chemistry
Modelling chemistry Dead Sea bromine ozone chemistry
2009/8/7
Measurements of O3 and BrO concentrations over the Dead Sea indicate that Ozone Depletion Events (ODEs), widely known to happen in polar regions, are also occuring over the Dead Sea due to the very hi...
The influence of foreign vs. North American emissions on surface ozone in the US
foreign vs. North American emissions surface ozone US
2009/8/7
As part of the Hemispheric Transport of Air Pollution (HTAP; http:// www.htap.org) project, we analyze results from 15 global and 1 hemispheric chemical transport models and compare these to Clean Air...
On the extraction of wind information from the assimilation of ozone profiles in Météo–France 4-D-Var operational NWP suite
wind information ozone profiles Météo–France 4-D-Var operational NWP suite
2009/7/23
By applying four-dimensional variational data-assimilation (4-D-Var) to a combined ozone and dynamics Numerical Weather Prediction model (NWP), ozone observations generate wind increments through the ...
BrO, blizzards, and drivers of polar tropospheric ozone depletion events
BrO blizzards polar tropospheric ozone depletion events
2009/7/23
The source of bromine that drives polar boundary layer ozone depletion events (ODEs) is still open to some debate. While ODEs are generally noted to form under conditions of a shallow stable boundary ...
Ozone in the boundary layer air over the Arctic Ocean: measurements during the TARA transpolar drift 2006–2008
Ozone boundary layer air Arctic Ocean measurements TARA transpolar drift
2009/7/22
A full year of measurements of surface ozone over the Arctic Ocean far removed from land is presented (81° N–88° N latitude). The data were obtained during the drift of the French schooner TARA betwee...
Accurate satellite-derived estimates of the tropospheric ozone impact on the global radiation budget
Accurate satellite-derived estimates tropospheric ozone global radiation budget
2009/7/15
Estimates of the radiative forcing due to anthropogenically-produced tropospheric O3 are derived primarily from models. Here, we use tropospheric ozone and cloud data from several instruments in the A...
Spatio-temporal observations of the tertiary ozone maximum
Spatio-temporal observations tertiary ozone maximum
2009/7/15
We present spatio-temporal distributions of the tertiary ozone maximum (TOM), based on GOMOS (Global Ozone Monitoring by Occultation of Stars) ozone measurements in 2002–2006. The tertiary ozone maxim...
Reassessment of causes of ozone column variability following the eruption of Mount Pinatubo using a nudged CCM
ozone column variability eruption Mount Pinatubo nudged CCM
2009/7/15
The eruption of Mount Pinatubo produced the largest loading of stratospheric sulphate aerosol in the twentieth century. This heated the tropical lower stratosphere, affecting stratospheric circulation...
Effects of the 2006 El Niño on tropospheric ozone and carbon monoxide: implications for dynamics and biomass burning
tropospheric ozone carbon monoxide dynamics and biomass burning
2009/7/15
We have studied the effects of the 2006 El Niño on tropospheric O3 and CO at tropical and sub-tropical latitudes measured from the OMI and MLS instruments on the Aura satellite. The 2006 El Ni&...
Surface ozone at the Caucasian site Kislovodsk High Mountain Station and the Swiss Alpine site Jungfraujoch: data analysis and trends（1990–2006）
Surface ozone Caucasian site Kislovodsk High Mountain Station the Swiss Alpine site Jungfraujoch
2009/6/23
Long-term ozone measurements of two background mountain sites, namely the Kislovodsk High Mountain Station in Caucasus, Russia (KHMS, 43.70° N, 42.70° E, 2070 m a.s.l.) and the Jungfraujoch in Switzer...
Photodegradation of secondary organic aerosol generated from limonene oxidation by ozone studied with chemical ionization mass spectrometry
Photodegradation secondary organic aerosol limonene oxidation
2009/6/16
Photodegradation of secondary organic aerosol (SOA) prepared by ozone-initiated oxidation of D-limonene is studied with an action spectroscopy approach, which relies on detection of volatile photoprod...
Inferring ozone production in an urban atmosphere using measurements of peroxynitric acid
Inferring ozone production urban atmosphere peroxynitric acid
2009/6/16
Observations of peroxynitric acid (HO2NO2) obtained simultaneously with those of NO and NO2 provide a sensitive measure of the ozone photochemical production rate. We illustrate this technique for con...
Reactive nitrogen in Mexico City and its relation to ozone-precursor sensitivity: results from photochemical models
Reactive nitrogen Mexico City ozone-precursor sensitivity photochemical models
2009/6/16
We use results of a 3-D photochemistry/transport model for ozone formation in Mexico City during events in 1997 to investigate ambient concentrations of reactive nitrogen in relation to ozone-precurso...