First ground-based FTIR-observations of methane in the tropics
1Institute of Environmental Physics, University of Bremen, Bremen, Germany
2SRON Netherlands Institute for Space Research, Utrecht, The Netherlands
3Institute for Environment and Sustainability (IES), European Commission Joint Research Centre, Ispra, Italy
4Max-Planck Institute for Biogeochemistry, Jena, Germany
5Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
Abstract. Total column concentrations and volume mixing ratio profiles of methane have been retrieved from ground-based solar absorption FTIR spectra in the near-infrared recorded in Paramaribo (Suriname). The methane FTIR observations are compared with TM5 model simulations and satellite observations from SCIAMACHY, and represent the first validation of SCIAMACHY retrievals in the tropics using ground-based remote sensing techniques. Apart from local biomass burning features, our methane FTIR observations agree well with the SCIAMACHY retrievals and TM5 model simulations.