First measurements of atmospheric water abundance and opacity in Rondônia with MOPS, a dual channel microwave radiometer

Details First measurements of atmospheric water abundance and opacity in Rondônia with MOPS, a dual channel microwave radiometer First measurements of atmospheric water abundance and opacity in Rondônia with MOPS, a dual channel microwave radiometer

Aug 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003basbr..23..193b&link_type=abstract

Boletim da Sociedade Astronômica Brasileira (ISSN 0101-3440), vol.23, no.1, p. 193-193

Computer Science

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MOPS, the Microwave Opacity Sounder, is a passive, ground-based microwave radiometer that is under development at IAG since August 2001. It consists of two independent Dicke receivers that detect the thermal atmospheric emission at 22 and 31 GHz. MOPS provides data about the atmospheric attenuation and enables the assessment of radio astronomical observation sites as well as the correction of radio astronomical observations. The technical details have been presented at last year's SAB meeting. During 13 September to 11 October 2002 MOPS participated in the DRYTOWET-AMC/LBA field campaign in the brazilian state Rondônia (AMC: Atmospheric Mesoscale Campaign, LBA: Large Scale Biosphere-Atmosphere Experiment in Amazonia). For the first time, a series of elevation scans and zenith soundings of the atmospheric brightness temperature have been performed. The collected data is used for the retrieval of atmospheric water abundance and opacity in the microwave regime. The poster will describe the measurements and the data analysis. The availability of radiosoundings of meteorological parameters at the same site allows for the simulation of the radiative transfer through the atmosphere. For this purpose ARTS, the Atmospheric Radiative Transfer System, has been applied. By this the retrieved quantities are validated and potential improvements of MOPS can be spotted.

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