An improved fast-response vacuum-uv resonance fluorescence CO instrument
The fast-response resonance fluorescence instrument for the airborne measurement of carbon monoxide described by Gerbig er al. [1996] was modified by implementing an improved optical filter with more efficient optics and an optimized resonance lamp. Besides reductions in size and weight, the new ins...
| Published in: | Journal of Geophysical Research: Atmospheres |
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| Main Authors: | , , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
1999
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| Subjects: | |
| Online Access: | http://hdl.handle.net/11858/00-001M-0000-002A-D650-5 http://hdl.handle.net/11858/00-001M-0000-002A-D67B-7 |
| Summary: | The fast-response resonance fluorescence instrument for the airborne measurement of carbon monoxide described by Gerbig er al. [1996] was modified by implementing an improved optical filter with more efficient optics and an optimized resonance lamp. Besides reductions in size and weight, the new instrument achieves a sensitivity 10 times higher, a lower background (65 ppb compared with 250 ppb), and a faster time response (<0.1s) than the original instrument. The precision is +/-1.5 ppb at an atmospheric mixing ratio of 100 ppb CO, and the detection limit is 3 ppb (2 sigma) for an integration time of 1 s. First results from the North Atlantic Regional Aerosol Characterization Experiment (ACE-2) campaign during July 1997, when the new instrument was deployed aboard the U.K. Meteorological Office C-130 aircraft, are used to demonstrate the performance of the new instrument. |
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