Üllar Rannik

Learn More
[1] Thinning is a routine forest management operation that changes tree spacing, number, and size distribution and affects the material flows between vegetation and the atmosphere. Here, using direct micrometeorological ecosystem-scale measurements, we show that in a boreal pine forest, thinning decreases the deposition velocities of fine particles as(More)
Spring time soil nitrous oxide (N 2 O) fluxes were measured in an old beech (Fagus syl-vatica L.) forest with eddy covariance (EC) and chamber techniques. The aim was to compare the two techniques and to test whether EC can be used in the trunk-space of the forest to measure N 2 O. Mean N 2 O fluxes over the five week measurement period 5 were 5, 10 and 16(More)
Overview of the field measurement campaign in Hyytï aï a M. Boy et al. Overview of the field measurement campaign in Hyytï aï a M. Boy et al. Abstract As one part of the OSOA (Origin and formation of Secondary Organic Aerosols) project, two intensive field campaigns were conducted in Melpitz, Germany and Hyytï aï a, Fin-land. This paper gives an overview of(More)
  • 1