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The Chemistry of Atmosphere-Forest Exchange (CAFE) Model – Part 2: Application to BEARPEX-2007 observations
Atmosphere-Forest Exchange (CAFE) Model BEARPEX-2007 observations
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2011/2/25
In a companion paper, we introduced the Chemistry of Atmosphere-Forest Exchange (CAFE) model, a vertically-resolved 1-D chemical transport model designed to probe the details of near-surface reactive ...
Simultaneous HONO measurements in and above a forest canopy: influence of turbulent exchange on mixing ratio differences
HONO measurements a forest canopy turbulent exchange ratio differences
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2011/2/24
We have combined chemical and micrometeorological measurements to investigate the formation and distribution of HONO throughout a forest canopy. HONO was measured simultaneously at two heights, close ...
The influence of gas-particle partitioning and surface-atmosphere exchange on ammonia during BAQS-Met
gas-particle partitioning surface-atmosphere exchange ammonia during BAQS-Met
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2011/1/19
The Border Air Quality and Meteorology study (BAQS-Met) was an intensive field campaign conducted in Southwestern Ontario during the summer of 2007. The focus of BAQS-Met was determining the causes of...
The Chemistry of Atmosphere-Forest Exchange (CAFE) Model – Part 1: Model description and characterization
Atmosphere-Forest Exchange (CAFE) Model Model description and characterization
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2011/1/19
We present the Chemistry of Atmosphere-Forest Exchange (CAFE) model, a vertically-resolved 1-D chemical transport model designed to probe the details of near-surface reactive gas exchange. CAFE integr...
Review and parameterisation of bi-directional ammonia exchange between vegetation and the atmosphere
bi-directional ammonia exchange vegetation the atmosphere
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2010/11/29
Current deposition schemes used in atmospheric chemical transport models do not generally account for bi-directional exchange of ammonia (NH3). Bi-directional exchange schemes, which have so far been ...
The effects of clouds and aerosols on net ecosystem CO2 exchange over semi-arid Loess Plateau of Northwest China
clouds and aerosols net ecosystem CO2 exchange semi-arid Loess Plateau of Northwest China
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2010/9/14
The impacts of clouds and atmospheric aerosols on the terrestrial carbon cycle at semi-arid Loess Plateau in Northwest China are investigated, by using the observation data obtained at the SACOL (Semi...
Turbulent exchange and segregation of HOx radicals and volatile organic compounds above a deciduous forest
HOx radicals volatile organic compounds a deciduous forest
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2010/8/16
The eddy covariance method was applied for the first time to estimate fluxes of OH and HO2 together with fluxes of isoprene, the sum of methyl vinyl ketone (MVK) and methacrolein (MACR) and the sum of...
Amine exchange into ammonium bisulfate and ammonium nitrate nuclei
Amine ammonium bisulfate ammonium nitrate nuclei
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2010/8/12
The exchange kinetics and thermodynamics of amines for ammonia in small (1–2 nm diameter) ammonium bisulfate and ammonium nitrate clusters were investigated using electrospray ionization Fourier trans...
Midlatitude stratosphere – troposphere exchange as diagnosed by MLS O3 and MOPITT CO assimilated fields
Midlatitude stratosphere troposphere exchange MLS O3 MOPITT CO assimilated fields
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2010/3/5
This paper presents a comprehensive characterization of a very deep stratospheric intrusion which occurred over the British Isles on 15 August 2007. The signature of this event is diagnosed using ozon...
The exchange of SVOCs across the air-sea interface in Singapore's coastal environment
SVOCs air-sea interface Singapore's coastal environment
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2010/2/21
Coastal areas are vulnerable to the accumulation of semivolatile organic compounds, such as PAHs, OCPs and PCBs from atmospheric inputs. Dry particulate and wet depositions, and air-water diffusive ex...
Carbonyl sulfide exchange in a temperate loblolly pine forest grown under ambient and elevated CO2
Carbonyl sulfide loblolly pine forest CO2
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2010/2/1
Vegetation, soil and ecosystem level carbonyl sulfide (COS) exchange was observed at Duke Forest, a temperate loblolly pine forest, grown under ambient (Ring 1, R1) and elevated (Ring 2, R2) CO2. Duri...
The effects of experimental uncertainty in parameterizing air-sea gas exchange using tracer experiment data
parameterizing air-sea gas tracer
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2009/3/12
It is not practical to measure air-sea gas fluxes in the open ocean for all conditions and areas of interest. Therefore, in many cases fluxes are estimated from measurements of air-phase and water-pha...
On the origin of tropospheric O3 over the Indian Ocean during the winter monsoon: African biomass burning vs. stratosphere-troposphere exchange
tropospheric O3 Indian Ocean winter monsoon African biomass stratosphere-troposphere exchange
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2009/3/12
This study investigates the origin of a commonly observed feature in the O3 profiles: mid tropospheric O3 maxima (300--500 hPa) over the tropical Indian Ocean. A comparison and analysis of model simul...
Gas-particle interactions above a Dutch heathland: II. Concentrations and surface exchange fluxes of atmospheric particles
Gas-particle interactions Dutch heathland atmospheric particles
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2009/3/2
Size-dependent particle number fluxes measured by eddy-covariance (EC) and continuous fluxes of ammonium (NH4+) measured with the aerodynamic gradient method (AGM) are reported for a Dutch heathland. ...
Gas-particle interactions above a Dutch heathland：I. Surface exchange fluxes of NH3, SO2, HNO3 and HCl
Gas-particle interactions Dutch heathland NH3 SO2 HNO3
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2009/2/27
A field measurement campaign was carried out over a Dutch heathland to investigate the effect of gas-to-particle conversion and ammonium aerosol evaporation on surface/atmosphere fluxes of ammonia and...