Ground-Based Doppler-Wind and Temperature Measurements by Infrared Heterodyne Spectroscopy

Details Ground-Based Doppler-Wind and Temperature Measurements by Infrared Heterodyne Spectroscopy Ground-Based Doppler-Wind and Temperature Measurements by Infrared Heterodyne Spectroscopy

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1807s&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1807

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Scientific paper

There are only few options to measure wind velocities in the venusian atmosphere directly without any additional assumption or model predictions. One elegant method to investigate high atmospheric winds from Earth is by observing infrared CO2 emission lines at 10 μm with high spectral resolution heterodyne spectroscopy. From Doppler shifted lines velocities of the emitting/absorbing gas can be directly deduced and kinetic temperatures can be derived from the line width. With the Tuneable Heterodyne Infrared Spectrometer THIS based at the University of Cologne we measured winds and temperatures from 2007 up to 2011. We will present the results hopefully including newest values from an observing run in June 2011 and give a comparisons to other ground and space based measurements.

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