My specialist areas are in boundary layer meterology; land-surface-atmosphere interactions; footprint modelling; greenhouse gas fluxes.
My research focuses on interactions of the terrestrial biosphere and the lower atmosphere.
(i) Footprint/source-area modelling based on a backward Lagrangian particle dispersion model to determine the upwind surface area of influence for an atmospheric flux or concentration measurement.
Online footprint estimate: Calculate a footprint using a simple parameterisation (http://footprint.kljun.net/).
(ii) Vegetation - atmosphere carbon and water vapour exchange: processes controlling and influencing the carbon and water balances
(iii) Upscaling of local greenhouse gas flux measurements to a regional or continental scale, taking into account heterogeneous surfaces, complex terrain, and issues in spatial and temporal resolution