Starting long-term stratospheric observations with RAMAS at Summit, Greenland |
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| Authors: | Golchert S.H.W. Buschmann N. Kleindienst A. Palm M. Schneider N. Jonch-Sorensen H. Notholt J. |
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| Affiliation: | Inst. for Environ. Phys., Univ. of Bremen, Germany; |
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| Abstract: | The new microwave Radiometer for Atmospheric Measurements at Summit (RAMAS) has started operation at Summit station, Greenland (72/spl deg/N, 38/spl deg/W, 3200 m), and is now being prepared for continuous measurements. RAMAS operates in the frequency band from 265-280 GHz with an instantaneous bandwidth of currently 1 GHz. It observes the emission of thermally induced rotational transitions of a variety of stratospheric trace gases, including O/sub 3/, ClO, N/sub 2/O, HNO/sub 3/, and HCN. Tropospheric water vapor content, a major constraint on ground-based microwave radiometry, is exceptionally low at Summit station. Initial measurements and retrieved profiles are presented, demonstrating the excellent measurement conditions. |
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