Measurements of ammonia flux to a spruce stand in Denmark

  • Andersen H
  • Hovmand M
  • Hummelshøj P
 et al. 
  • 5

    Readers

    Mendeley users who have this article in their library.
  • 42

    Citations

    Citations of this article.

Abstract

This work demonstrates the existence of a linear relation between the deposition velocity of ammonia and the friction velocity measured above a spruce stand in the western part of Denmark. In order to estimate the ammonia deposition velocity and flux to a Norway spruce forest, concentration gradients of ammonia and several meteorological parameters were measured in a meteorology tower during two periods, 1 week in spring and 1 week in late summer 1991. The estimated deposition velocities lie in the range -0.125 to 0.201 m s-1, with a mean of 0.026 m s-1. The deposition velocity and the flux were generally largest in the afternoon. On the basis of 24-h measurements of ammonia and routine meteorological measurements the relation between deposition velocity and friction velocity is extrapolated to an estimate of the average flux for the growing season May to September 1991. The estimate gave an average flux of 87 μg NH3N m-2h-1(=0.02 μg NH3N m-2s-1). The average deposition velocity for the period was 0.045 m s-1. © 1993.

Author-supplied keywords

  • Ammonia
  • dry deposition velocity
  • flux
  • forest
  • micrometeorology

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

Error loading document authors.

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free