We investigate the complex interaction of chemical and dynamical processes in the Earth's atmosphere on basis of distributions of trace gases, aerosols, clouds and temperature which we derive from spectral measurements of satellite remote sensing instruments. Our work field covers processing of satellite data and their validation, the research on physical and chemical processes in the atmosphere on the basis of the retrieved distributions of temperature, particles and trace gases, and the development and implementation of related satellite data analysis algorithms. The current focus of our work is the MIPAS-Envisat mission. The MIPAS satellite data derived by our group can be accessed here. Besides our work with MIPAS we are involved in the preparation of future space missions. On this website you find information about our publications, MIPAS-Envisat data, the annual MIPAS Data User Meeting, our radiative transfer model KOPRA, the team and our projects, as well as some pictures.
Highlight of the month:
Millennium water vapour drop was caused by an interplay of ENSO and QBO
The upper figure shows the anomaly of water vapour with a pronounced drop in the year 2000 as a near-global mean (60S-60N) at 83 hPa from combined HALOE/MLS observations (black), EMAC model simulations (red), and another merged satellite data set (blue). The model simulation is a nudged hindcast run for the years 1980 - 2012 with SSTs from ERA-Interim data. Model prognostic variables (vorticity, divergence, the logarithm of the surface pressure, the temperature, and additionally the mean temperature – wave number zero in spectral space) are nudged by Newtonian relaxation towards ERA-Interim reanalysis data. The lower figure shows the strength of the drop (amplitude, in ppmv) as derived from the model simulations (left) and from MIPAS observations (right) as a function of altitude and latitude.