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Inter-community variability in total particle number concentrations in the eastern Los Angeles air basin
particle number the eastern Los Angeles air basin
2010/12/20
Ultrafine Particles (UFP) can display sharp gradients in their number concentrations in urban environment due to their transient nature and rapid atmospheric processing. The ability of using air pollu...
Temporal variability of mineral dust concentrations over West Africa: analyses of a pluriannual monitoring from the AMMA Sahelian Dust Transect
Temporal variability mineral dust concentrations West Africa the AMMA Sahelian Dust Transect
2010/10/11
The Sahelian belt is known to be a region where atmospheric levels of suspended mineral dust are among the highest observed on Earth. In the framework of the AMMA (African Monsoon Multidisciplinary An...
Aerosol mass and black carbon concentrations, a two year record at NCO-P (5079 m, Southern Himalayas)
Aerosol mass black carbon NCO-P
2010/9/21
Aerosol mass and the absorbing fraction are important variables, needed to constrain the role of atmospheric particles in the Earth radiation budget, both directly and indirectly through CCN activatio...
Fluxes and concentrations of volatile organic compounds from a South-East Asian tropical rainforest
volatile organic compounds a South-East Asian tropical rainforest
2010/9/21
As part of the OP3 field study of rainforest atmospheric chemistry, above-canopy fluxes of isoprene, monoterpenes and oxygenated volatile organic compounds were made by virtual disjunct eddy covarianc...
Spatial distribution and interannual variation of surface PM10 concentrations over eighty-six Chinese cities
Spatial distribution interannual variation eighty-six Chinese cities
2010/8/13
The spatial distribution of the aerosols over 86 Chinese cities was reconstructed from air pollution index (API) records for summer 2000 to winter 2006. PM10 (particulate matter ≤10 μm) mass concentra...
Toward real-time measurement of atmospheric mercury concentrations using cavity ring-down spectroscopy
real-time measurement atmospheric mercury concentrations cavity ring-down spectroscopy
2010/8/12
Cavity ring-down spectroscopy (CRDS) is a direct absorption technique that utilizes path lengths up to multiple kilometers in a compact absorption cell and has a significantly higher sensitivity than ...
Influences of in-cloud aerosol scavenging parameterizations on aerosol concentrations and wet deposition in ECHAM5-HAM
in-cloud aerosol aerosol concentrations ECHAM5-HAM
2010/2/21
A diagnostic cloud nucleation scavenging scheme, which determines stratiform cloud scavenging ratios for both aerosol mass and number distributions, based on cloud droplet, and ice crystal number conc...
What caused extreme ozone concentrations over Cotonou in December 2005?
extreme ozone concentrations Cotonou
2010/2/1
This paper reports the first record of extreme ozone measurements in Africa. As part of the AMMA program, the ozone vertical profile recorded on 20 December over Cotonou presents exceptionally high oz...
Metal concentrations in the upper atmosphere during meteor showers
Metal concentrations upper atmosphere meteor showers
2010/2/21
Using the nadir-viewing Global Ozone Measuring Experiment (GOME) UV/VIS spectrometer on the ERS-2 satellite, we investigate short term variations in the vertical magnesium column densities in the atmo...
Fluxes and concentrations of volatile organic compounds above central London, UK
Fluxes volatile organic compounds central London UK
2010/2/1
Concentrations and fluxes of eight volatile organic compounds (VOCs) were measured during October 2006 from a high telecom tower above central London, as part of the CityFlux contribution to the REPAR...
Evaluating the potential of IASI ozone observations to constrain simulated surface ozone concentrations
IASI ozone observations to constrain simulated surface ozone concentrations
2009/11/19
A tracer study has been performed for two summers in 2003 and 2004 with a regional chemistry-transport model in order to evaluate the potential constraint that tropospheric ozone observations from nad...
VOC measurements within a boreal forest during spring 2005: on the occurrence of elevated monoterpene concentrations during night time intense particle concentration events
VOC measurements boreal forest monoterpene concentrations
2009/11/19
In this study we present measurements of selected trace gases and aerosols made in a boreal forest during the BACCI-QUEST IV intensive field campaign in Hyytiälä, Finland in April 2005. Spri...
Sulfuric acid and OH concentrations in a boreal forest site
Sulfuric acid OH concentrations boreal forest site
2009/10/9
As demonstrated in a number of investigations, gaseous sulfuric acid plays a central role in atmospheric aerosol formation. Using chemical ionization mass spectrometer the gas-phase sulfuric acid and ...
Measurements of OH and HO2 concentrations during the MCMA-2006 field campaign–Part 2: Model comparison and radical budget
OH HO2 Model comparison radical budget
2009/9/22
Measurements of hydroxyl (OH) and hydroperoxy (HO2) radicals were made during the Mexico City Metropolitan Area (MCMA) field campaign as part of the MILAGRO (Megacity Initiative: Local and Global Rese...
Day-time concentrations of biogenic volatile organic compounds in a boreal forest canopy and their relation to environmental and biological factors
Day-time concentrations biogenic volatile organic compounds boreal forest canopy environmental and biological factors
2009/8/7
Atmospheric concentrations of methanol, acetaldehyde, acetone, isoprene and monoterpenes were measured using PTR-MS (proton transfer reaction mass spectrometry) in a boreal forest site in Hyytiäl...