Chemically Resolved Particle Fluxes Over Tropical and Temperate Forests
- Farmer, Delphine K
- Chen, Qi
- Kimmel, Joel R
- Docherty, Kenneth S
- Eiko, Nemitz
- Artaxo Netto, Paulo Eduardo
- Cappa, Christopher D
- Martin, Scot T
- Jimenez, Jose L
DOIAbstract
Chemically resolved submicron (PM1) particlemass fluxes were\ud measured by eddy covariance with a high resolution time-of-flight\ud aerosolmass spectrometer over temperate and tropical forests during\ud the BEARPEX-07 and AMAZE-08 campaigns. Fluxes during\ud AMAZE-08 were small and close to the detection limit (<1 ng\ud m−2 s−1) due to low particle mass concentrations (<1 μg m−3).\ud During BEARPEX-07, concentrations were five times larger, with\ud mean mid-day deposition fluxes of −4.8 ng m−2 s−1 for total\ud nonrefractory PM1 (Vex,PM1 = −1 mm s−1) and emission fluxes\ud of +2.6 ng m−2 s−1 for organic PM1 (Vex,org = +1 mm s−1).\ud Biosphere–atmosphere fluxes of different chemical components are\ud affected by in-canopy chemistry, vertical...
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