Brian J. Drouin

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2004 balloon flights are also presented. Overall good agreeement is obtained, often within 5 to 10%, but we point out certain issues to resolve and some larger systematic differences; some artifacts in the first publicly released MLS (version 1.5) dataset are noted. We comment briefly on future plans for validation and software improvements.
[1] We report a steady decrease in the upper stratospheric and lower mesospheric abundances of hydrogen chloride (HCl) from August 2004 through January 2006, as measured by the Microwave Limb Sounder (MLS) aboard the Aura satellite. For 60°S to 60°N zonal means, the average yearly change in the 0.7 to 0.1 hPa ($50 to 65 km) region is À27 ± 3 pptv/year, or(More)
[1] Satellite measurements of OH and HO 2 obtained by the Aura MLS instrument are compared to the balloon-borne BOH and FIRS-2 instruments. All measurements are also compared with constrained photochemical model calculations. On average, both balloon measurements of OH agree with MLS within 17% over 25– 40 km and the measurements agree with the model within(More)
—This paper presents a hybrid design based, CMOS millimeter-wave (mm-wave) single-polar single-throw (SPST) switch. The circuit design starts from the analysis and optimization of a distributed structure, while implemented using coupled lump elements for performance improvement and area-efficient layout. Moreover, a specific bias scheme is used to further(More)
The paper presents a 2.2 GS/s (1.1 GHz Nyquist bandwidth), 188 mW 512-channel spectrometer processor developed to support of future science observations on NASA planetary missions, where payload size, weight, and power consumption are extremely limited. The presented spectrometer processor chip contains a pair of 7 bit ADC IQ converters coupled with a 512(More)
This paper presents a hybrid design based, CMOS millimeter-wave (mm-wave) single-polar single-throw (SPST) switch. The circuit design starts from the analysis and optimization of a distributed structure, while implemented using coupled lump elements for performance improvement and area-efficient layout. Moreover, a specific bias scheme is used to further(More)
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