NILU's Annual Report 2017

Page 14

COMTESSA: Understanding turbu

The ERC project COMTESSA (Camera Observation and Modelling of 4D Tracer Dispersion in the Atmospher is led by senior scientist Andreas Stohl from NILU’s department of atmosphere and climate. COMTESSA

elevate the theory and simulation of turbulent tracer dispersion in the atmosphere to a new level by perfo completely novel high-resolution 4D measurements. In July 2017, the COMTESSA team were in the field, using UV and IR (infrared) cameras to track turbulence in the atmosphere.

Massimo Cassiani checks the equipment at the top of the mast. Photo: Hamidreza Ardeshiri, NILU

Massimo Cassiani and Norbert Schmidbauer are adding a few more marks on the SO2 gas flow meter. This was done for a sensitivity test – increasing the amount of SO2 released and comparing this with the SO2 fluxes measured with the cameras. Photo: Hamidreza Ardeshiri, NILU

Soon-Young Park and Solvejg Dinger preparing the drone. Photo: Hamidreza Ardeshiri, NILU 14

NILU – Norwegian Institute for Air Research