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Balloon-borne radiometer measurements of Northern Hemisphere mid-latitude stratospheric HNO3 profiles spanning 12 years

Toohey, M. and Quine, B. M. and Strong, K. and Bernath, P. F. and Boone, C. D. and Jonsson, A. I. and McElroy, C. T. and Walker, K. A. and Wunch, D. (2007) Balloon-borne radiometer measurements of Northern Hemisphere mid-latitude stratospheric HNO3 profiles spanning 12 years. Atmospheric Chemistry and Physics, 7 (23). pp. 6075-6084. ISSN 1680-7316. https://resolver.caltech.edu/CaltechAUTHORS:TOOacp07

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Abstract

Low-resolution atmospheric thermal emission spectra collected by balloon-borne radiometers over the time span of 1990–2002 are used to retrieve vertical profiles of HNO3, CFC-11 and CFC-12 volume mixing ratios between approximately 10 and 35 km altitude. All of the data analyzed have been collected from launches from a Northern Hemisphere mid-latitude site, during late summer, when stratospheric dynamic variability is at a minimum. The retrieval technique incorporates detailed forward modeling of the instrument and the radiative properties of the atmosphere, and obtains a best fit between modeled and measured spectra through a combination of onion-peeling and optimization steps. The retrieved HNO3 profiles are consistent over the 12-year period, and are consistent with recent measurements by the Atmospheric Chemistry Experiment-Fourier transform spectrometer satellite instrument. We therefore find no evidence of long-term changes in the HNO3 summer mid-latitude profile, although the uncertainty of our measurements precludes a conclusive trend analysis.


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http://www.atmos-chem-phys.net/7/6075/2007/OtherUNSPECIFIED
ORCID:
AuthorORCID
Wunch, D.0000-0002-4924-0377
Additional Information:© Author(s) 2007. This work is licensed under a Creative Commons License. Published by Copernicus Publications on behalf of the European Geosciences Union. Received: 2 July 2007 – Published in Atmos. Chem. Phys. Discuss.: 6 August 2007. Revised: 24 October 2007 – Accepted: 22 November 2007 – Published: 11 December 2007. All four MANTRA campaigns were supported by the Canadian Space Agency (CSA) and the Meteorological Service of Canada. MANTRA 1998 also received support from the Centre for Research in Earth and Space Technology, while MANTRA 2002 and 2004 were also supported by Natural Sciences and Engineering Research Council (NSERC) of Canada. The Atmospheric Chemistry Experiment (ACE), also known as SCISAT-1, is a Canadian-led mission mainly supported by the CSA and NSERC. This work was also carried out with the aid of a grant from the CSA. M. Toohey gratefully acknowledges the scholarship support of NSERC and the CSA. ACP - Special Issue: MANTRA – Results from the Middle Atmosphere Nitrogen TRend Assessment Campaigns. Editor(s): A. Richter. http://www.atmos-chem-phys.net/special_issue77.html
Issue or Number:23
Record Number:CaltechAUTHORS:TOOacp07
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:TOOacp07
Official Citation:Toohey, M., Quine, B. M., Strong, K., Bernath, P. F., Boone, C. D., Jonsson, A. I., McElroy, C. T., Walker, K. A., and Wunch, D.: Balloon-borne radiometer measurements of Northern Hemisphere mid-latitude stratospheric HNO3 profiles spanning 12 years, Atmos. Chem. Phys., 7, 6075-6084, 2007. http://www.atmos-chem-phys.net/7/6075/2007/
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9596
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:12 Feb 2008
Last Modified:03 Oct 2019 00:01

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