<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Time dependent profiling of UV/vis absorbing radicals by balloon-borne spectroscopic Limb measurements and implications for stratospheric photochemistry"^^ . "Nitrogen bearing compounds play an important role in catalytic loss of stratospheric ozone and, as studies indicate, will become even more important in future. Here balloon-borne limb measurements of the time and altitude dependent variation of O3, NO2, BrO and HONO are presented, providing new insight into the NOx and NOy photochemistry of the tropical upper troposphere, lower and middle stratosphere. A new method is discussed aiming at the retrieval of the diurnal variation of UV/vis absorbing radicals from balloon-borne limb scattered skylight observations in a self consistent manner. The method employs the spectroscopic measurements in combination with radiative transfer modeling and a mathematical inversion on a regularized time and height grid. The retrieval is tested by comparing the results to in-situ ozone sonding, simultaneous O3, NO2 and BrO direct sun observations, performed on the same payload, and to measurements of the ENVISAT/SCIAMACHY satellite instrument during a collocated overpass. The comparison demonstrates the strength and validity of our approach which renders meteorological and photochemical corrections of measured radical concentrations due to temporal mismatches of corresponding observations unnecessary. The collected data are further explored to in-situ test photochemical parameters, critical for stratospheric ozone, exemplarily for the N2O5 photolysis rate. The present study indicates a slightly larger N2O5 photolysis rate than the commonly referred JPL-2006, but agrees within the given error bars of a factor of 2. Finally, first detection of HONO in the tropical upper troposphere is reported, and discussed with respect to the known photochemistry and formation of NOx in nearby thunderstorms."^^ . "2009" . . . . . . . . "Lena"^^ . "Kritten"^^ . "Lena Kritten"^^ . . . . . . "Time dependent profiling of UV/vis absorbing radicals by balloon-borne spectroscopic Limb measurements and implications for stratospheric photochemistry (PDF)"^^ . . . "Dissertation_Lena_Kritten.pdf"^^ . . . "Time dependent profiling of UV/vis absorbing radicals by balloon-borne spectroscopic Limb measurements and implications for stratospheric photochemistry (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Time dependent profiling of UV/vis absorbing radicals by balloon-borne spectroscopic Limb measurements and implications for stratospheric photochemistry (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Time dependent profiling of UV/vis absorbing radicals by balloon-borne spectroscopic Limb measurements and implications for stratospheric photochemistry (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Time dependent profiling of UV/vis absorbing radicals by balloon-borne spectroscopic Limb measurements and implications for stratospheric photochemistry (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Time dependent profiling of UV/vis absorbing radicals by balloon-borne spectroscopic Limb measurements and implications for stratospheric photochemistry (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #10461 \n\nTime dependent profiling of UV/vis absorbing radicals by balloon-borne spectroscopic Limb measurements and implications for stratospheric photochemistry\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .