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Halogens and their role in polar boundary-layer ozone depletion
Halogens polar boundary-layer ozone depletion
2008/12/17
During springtime in the polar regions, unique photochemistry converts inert halide salt ions (e.g. Br−) into reactive halogen species (e.g. Br atoms and BrO) that deplete ozone in the boundary ...
Chemistry, transport and dry deposition of trace gases in the boundary layer over the tropical Atlantic Ocean and the Guyanas during the GABRIEL field campaign
dry deposition trace gases boundary layer tropical Atlantic Ocean Guyanas GABRIEL field campaign
2008/12/15
We present a comparison of different Lagrangian and chemical box model calculations with measurement data obtained during the GABRIEL campaign over the tropical Atlantic Ocean and the Amazon rainfores...
Boundary layer concentrations and landscape scale emissions of volatile organic compounds in early spring
boundary layer landscape scale emissions volatile organic compounds
2008/12/5
Boundary layer concentrations of several volatile organic compounds (VOC) were measured during two campaigns in springs of 2003 and 2006. The measurements were conducted over boreal landscapes near SM...
Characterization of the 222Rn family turbulent transport in the convective atmospheric boundary layer
222Rn family turbulent transport convective atmospheric boundary layer
2008/12/1
The combined effect of turbulent transport and radioactive decay on the distribution of 222Rn and its progeny in convective atmospheric boundary layers (CBL) is investigated. Large eddy simulation is ...
High resolution vertical distributions of NO3 and N2O5 through the nocturnal boundary layer
NO3 N2O5 nocturnal boundary layer
2008/11/27
The shallow mixing depth and vertical stratification of the lowest levels of the atmosphere at night has implications for the chemistry of nitrogen oxides emitted from the surface. Here we report vert...
The role of ozone atmosphere-snow gas exchange on polar, boundary-layer tropospheric ozone – a review and sensitivity analysis
ozone atmosphere-snow gas polar boundary-layer tropospheric ozone
2008/11/27
Recent research on snowpack processes and atmosphere-snow gas exchange has demonstrated that chemical and physical interactions between the snowpack and the overlaying atmosphere have a substantial im...
Surface and boundary layer exchanges of volatile organic compounds, nitrogen oxides and ozone during the GABRIEL campaign
Surface and boundary layer volatile organic compounds nitrogen oxides ozone
2008/11/24
We present an evaluation of sources, sinks and turbulent transport of nitrogen oxides, ozone and volatile organic compounds (VOC) in the boundary layer over French Guyana and Suriname during the Octob...
Consistent simulation of bromine chemistry from the marine boundary layer to the stratosphere – Part 2: Bromocarbons
bromine chemistry marine boundary layer stratosphere Bromocarbons
2008/11/21
In this second part of a series of articles dedicated to a detailed analysis of bromine chemistry in the atmosphere we address one (out of two) dominant natural sources of reactive bromine. The two ma...
Consistent simulation of bromine chemistry from the marine boundary layer to the stratosphere – Part 1: Model description, sea salt aerosols and pH
bromine chemistry marine boundary layer stratosphere sea salt aerosols
2008/11/21
This is the first article of a series presenting a detailed analysis of bromine chemistry simulated with the atmospheric chemistry general circulation model ECHAM5/MESSy. Release from sea salt is an i...
Measurement-based modeling of bromine chemistry in the Dead Sea boundary layer – Part 2: The influence of NO2 on bromine chemistry at mid-latitude areas
bromine chemistry Dead Sea boundary layer NO2 mid-latitude areas
2008/11/17
Understanding the interaction between anthropogenic air pollution and Reactive Halogen Species (RHS) activity has had only limited support from direct field measurements, due to the fact that past fie...
Characterization of the South Atlantic marine boundary layer aerosol using an aerodyne aerosol mass spectrometer
South Atlantic marine boundary layer aerodyne aerosol spectrometer
2008/11/17
Measurements of the submicron fraction of the atmospheric aerosol in the marine boundary layer were performed from January to March 2007 (Southern Hemisphere summer) onboard the French research vessel...
Chemistry of the Antarctic Boundary Layer and the Interface with Snow: an overview of the CHABLIS campaign
Antarctic Boundary Layer CHABLIS campaign
2008/11/13
CHABLIS (Chemistry of the Antarctic Boundary Layer and the Interface with Snow) was a collaborative UK research project aimed at probing the detailed chemistry of the Antarctic boundary layer and the ...
Vertical distribution of ozone and VOCs in the low boundary layer of Mexico City
ozone VOCs low boundary layer Mexico City
2008/11/11
The evolution of ozone (O3) and 13 volatile organic compounds (VOCs) in the boundary layer of Mexico City was investigated during 2000–2004 to improve our understanding of the complex interactions bet...
DMS and MSA measurements in the Antarctic Boundary Layer: impact of BrO on MSA production
DMS MSA Antarctic Boundary Layer BrO MSA
2008/11/10
In situ measurements of dimethyl sulphide (DMS) and methane sulphonic acid (MSA) were made at Halley Station, Antarctica (75°35' S, 26°19' W) during February 2004–February 2005 as part of the CHABLIS ...
Experimental studies on particle emissions from cruising ship, their characteristic properties, transformation and atmospheric lifetime in the marine boundary layer
particle emissions cruising ship marine boundary layer
2008/11/6
Particle emissions from ship engines and their atmospheric transformation in the marine boundary layer (MBL) were investigated in engine test bed studies and in airborne measurements of expanding ship...