SPARC Water Vapour Initiative
The objective of the initiative is to compile and assess current knowledge on water vapour in the upper troposphere and stratosphere as part of a collaboration between leading international experts, in particular with a view to the impact of the water content on climate and possible changes in this part of the atmosphere.
Stratospheric Processes and their Role in Climate (SPARC) is a project within the World Climate Research Program WCRP. The Water Vapour Initiative is coordinated by Cornelius Schiller (IEK-7), Thomas Peter (ETH Zurich, Switzerland) and Karen Rosenlof (NOAA, Boulder, USA).
The three key tasks are:
- Evaluating the quality of in situ data and remote sensing data on water in the upper troposphere and stratosphere
- Compiling observations, laboratory measurements and theories on supersaturation inside and outside clouds
- Identifying and assessing changes in the water content in the upper troposphere and stratosphere and their impact on climate and atmospheric processes