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UV absorption cross sections of nitrous oxide (N2O) and carbon tetrachloride (CCl4) between 210 and 350 K and the atmospheric implications
UV absorption nitrous oxide (N2O) carbon tetrachloride (CCl4) the atmospheric implications
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2010/8/16
Absorption cross sections of nitrous oxide (N2O) and carbon tetrachloride (CCl4) are reported at five atomic UV lines (184.95, 202.548, 206.200, 213.857, and 228.8 nm) at temperatures in the range 210...
Cross-hemispheric transport of central African biomass burning pollutants: implications for downwind ozone production
Cross-hemispheric transport central African biomass burning pollutants downwind ozone production
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2010/8/12
Pollutant plumes with enhanced concentrations of trace gases and aerosols were observed over the southern coast of West Africa during August 2006 as part of the AMMA wet season field campaign. Plumes ...
First remote sensing measurements of ClOOCl along with ClO and ClONO2 in activated and deactivated Arctic vortex conditions using new ClOOCl IR absorption cross sections
ClOOCl Arctic vortex conditions ClOOCl IR
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2010/2/21
Active chlorine species play a dominant role in the catalytic destruction of stratospheric ozone in the polar vortices during the late winter and early spring seasons. Recently, the correct understand...
Black carbon over Mexico: the effect of atmospheric transport on mixing state, mass absorption cross-section, and BC/CO ratios
Black carbon Mexico atmospheric transport BC/CO ratios
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2010/1/18
A single particle soot photometer (SP2) was operated on the NCAR C-130 during the MIRAGE campaign (part of MILAGRO), sampling black carbon (BC) over Mexico. The highest BC concentrations were measured...
Evaluation of mobile emissions contributions to Mexico City's emissions inventory using on-road and cross-road emission measurements and ambient data
mobile emissions Mexico City's emissions inventory ambient data
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2009/9/11
Mobile emissions represent a significant fraction of the total anthropogenic emissions burden in the Mexico City Metropolitan Area (MCMA) and, therefore, it is crucial to use top-down techniques infor...
The UV-visible absorption cross-sections of IONO2
UV-visible absorption cross-sections IONO2
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2009/3/12
The UV-visible absorption spectrum of gaseous IONO2 has been measured over the wavelength range 245--415 nm using the technique of laser photolysis with time-resolved UV-visible absorption spectroscop...
Absolute absorption cross-section and photolysis rate of I2
Absolute absorption cross-section photolysis rate I2
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2009/3/4
Following recent observations of molecular iodine (I2) in the coastal marine boundary layer (MBL) (Saiz-Lopez and Plane, 2004), it has become important to determine the absolute absorption cross-secti...
Ultra-violet absorption cross sections of isotopically substituted nitrous oxide species: 14N14NO, 15N14NO, 14N15NO and 15N15NO
Ultra-violet absorption cross sections nitrous oxide species 14N14NO 15N14NO 14N15NO 15N15NO
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2009/3/3
The isotopically substituted nitrous oxide species 14N14NO, 15N14NO, 14N15NO and 15N15NO were investigated by ultra-violet (UV) absorption spectroscopy. High precision cross sections were obtained for...
Improved mid-infrared cross-sections for peroxyacetyl nitrate（PAN）vapour
mid-infrared cross-sections peroxyacetyl nitrate vapour PAN
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2009/1/23
Absorption spectra of peroxyacetyl nitrate (PAN, CH3C(O)OONO2) vapour at room temperature (295K) have been measured in the mid-infrared range, 550-2200cm-1 (18.2-4.55µm), using a Fourier Transfo...
Low temperature mid-infrared cross-sections for peroxyacetyl nitrate（PAN）vapour
Low temperature mid-infrared cross-sections peroxyacetyl nitrate vapour PAN
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2009/1/14
Laboratory absorption spectra of peroxyacetyl nitrate (PAN, CH3C(O)OONO2) vapour have been measured in the mid-infrared range 550 cm-1 to 1400 cm-1 (18.2 to 7.14 µm) at both 250 K and 273 K, us...
Effects of column density on I2 spectroscopy and a determination of I2 absorption cross section at 500 nm
column density I2 spectroscopy I2 absorption cross section
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2009/1/9
The use of ro-vibronic spectra of I2 in the region of 543 nm to 578 nm as reference spectra for atmospheric Differential Optical Absorption Spectroscopy is studied. It is shown that the retrieval of a...
Model study of the cross-tropopause transport of biomass burning pollution
cross-tropopause transport biomass burning pollution
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2008/12/15
We present a modeling study of the troposphere-to-stratosphere transport (TST) of pollution from major biomass burning regions to the tropical upper troposphere and lower stratosphere (UT/LS). TST oc...
A numerical study of tropical cross-tropopause transport by convective overshoots
tropical cross-tropopause transport convective overshoots
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2008/12/5
Observations obtained during the Tropical Convection, Cirrus and Nitrogen Oxides (TROCCINOX) golden day have revealed the presence of ice particles up to 410 K (18.2 km) 2 km above the local tropopau...
Near-UV photolysis cross sections of CH3OOH and HOCH2OOH determined via action spectroscopy
Near-UV photolysis CH3OOH HOCH2OOH
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2008/12/1
Knowledge of molecular photolysis cross sections is important for determining atmospheric lifetimes and fates of many species. A method and laser apparatus for measurement of these cross sections in t...
Estimation of the mass absorption cross section of the organic carbon component of aerosols in the Mexico City Metropolitan Area
organic carbon aerosols Mexico City
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2008/11/26
Data taken from the MCMA-2003 and the 2006 MILAGRO field campaigns are used to examine the absorption of solar radiation by the organic component of aerosols. Using irradiance data from a Multi-Filter...