Determination of HNO3 dry deposition by modified Bowen ratio and aerodynamic profile techniques

Muller, H.; Kramm, G.; Meixner, F.; Dollard, G.J.; Fowler, D.; Pozzanzini, M.. 1993 Determination of HNO3 dry deposition by modified Bowen ratio and aerodynamic profile techniques. Tellus Series B, 45 (4). 346-367.

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Modified Bowen ratio and aerodynamic profile techniques based on the constant flux approach were utilized to derive the deposition fluxes and deposition velocities (vd) of gaseous nitric acid from measurements made during two joint field experiments over low vegetation (grassland, LOVENOX, Halvergate, UK, September 1989) and over a wheat canopy (ecosystem wheat, Manndorf, Germany, July 1990). Both micrometeorological methods are discussed in more detail and in context with the flux-resistance analogy to provide a complete conceptual evaluation guide for HNO3 dry deposition analysis. Daytime dry deposition of nitric acid was found to be fast with an average vd of 2.2 ± 1.2 cm s−1 and a range of 0.6 to 5.0 cm s−1. The derived deposition velocities are in broad agreement with estimates of other authors. The data have also been used to check sublayer Stanton numbers which are of basic importance in determining the viscous sublayer resistance yet not well quantified.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry
UKCEH and CEH Sections/Science Areas: _ Pre-2000 sections
ISSN: 0040-2826
NORA Subject Terms: Ecology and Environment
Atmospheric Sciences
Date made live: 14 May 2009 12:57 +0 (UTC)

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