Author(s)

O Klemm, J. Burkhardf and J Gerchau

Abstract

Leaf Wetness: A Quantifiable Parameter in Deposition Studies A contribution to subproject BIATEX-2 O Klemm\ J. Burkhardf and J Gerchau* * Universitat Bayreuth, Bayreuther Institut fur Terrestrische Okosystemforschung (BITOK), D-95440 Bayreuth, Germany ^Agrikulturchemisches Institut, Universitdt Bonn, Germany What is leaf wetness? Obviously, "leaf wetness" is liquid water that is present on a leaf surface. It may be a droplet originating from the deposition of rain or fog; but it may also be condensed water that either originates from the atmosphere ("dew") or exited the interior of the leaf through stomatal transpiration. Hydrophilic aerosol particles on the leaf surfaces may deliquesce (i.e. take up humidity from the gas phase) at relative air humidities well below 100 %, and thus support or enable the formation of leaf wetness. Films of leaf wetness on plant surfaces may b

Keywords