Evaluation of ammonia fluxes into the free atmosphere over Western Germany.

Abstract

The upward flux densities of gaseous ammonia and particulate ammonium through a layer 400 m above ground were determined by aircraft measurements over a rural area in Western Germany. The fluxes amounted to 118 +/- 49 microgrammes/m2h NH3-N and 93 +/- 47 microgrammes/m2h NH+4-N in summer and to 7 +/- 14 microgrammes/m2h NH3-N and 23 +/- 34 microgrammes/m2h NH +4-N in winter.- from Authors