The objectives of the proposed research are to:
- Perform the first world-wide characterisation of COS isotopologues by measuring seasonal, latitudinal, and altitude variations in troposphere and stratosphere
- Measure COS gradients over the troposphere–stratosphere transition up to 30 km altitude using innovative AirCore sampling techniques
- Investigate fractionation effects during soil and plant uptake in laboratory experiments
- Develop the first model with capabilities to simulate COS-isotopologues and the coupled COS and CO2 cycles
- Pioneer the use of satellite observations of COS and its isotopologues
- Constrain the budgets of COS and CO2 using inverse modelling techniques employing surface measurements, satellite data, and new AirCore and isotopic COS measurements