Vertical profile of δ<sup>18</sup>OOO from the middle stratosphere to lower mesosphere from SMILES spectra
-
Published:2014-04-10
Issue:4
Volume:7
Page:941-958
-
ISSN:1867-8548
-
Container-title:Atmospheric Measurement Techniques
-
language:en
-
Short-container-title:Atmos. Meas. Tech.
Author:
Sato T. O.ORCID, Sagawa H.ORCID, Yoshida N.ORCID, Kasai Y.
Abstract
Abstract. Ozone is known to have large oxygen isotopic enrichments of about 10% in the middle stratosphere; however, there have been no reports of ozone isotopic enrichments above the middle stratosphere. We derived an enrichment δ18OOO in the stratosphere and the lower mesosphere from observations of the Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) onboard the International Space Station (ISS) using a retrieval algorithm optimized for the isotopic ratio. The retrieval algorithm includes (i) an a priori covariance matrix constrained by oxygen isotopic ratios in ozone, (ii) an optimization of spectral windows for ozone isotopomers and isotopologues, and (iii) common tangent height information for all windows. The δ18OOO by averaging the SMILES measurements at the latitude range of 20 to 40° N from February to March in 2010 with solar zenith angle < 80° was 13% (at 32 km) with the systematic error of about 5%. SMILES and past measurements were in good agreement, with δ18OOO increasing with altitude between 30 and 40 km. The vertical profile of δ18OOO obtained in this study showed an increase and a decrease with altitude in the stratosphere and mesosphere, respectively. The δ18OOO peak, 18%, is found at the stratopause. The δ18OOO has a positive correlation with temperature in the range of 220–255 K, indicating that temperature can be a dominant factor to control the vertical profile of δ18OOO in the stratosphere and mesosphere. This is the first report of the observation of δ18OOO over a wide altitude range extending from the stratosphere to the mesosphere (28–57 km).
Publisher
Copernicus GmbH
Subject
Atmospheric Science
Reference32 articles.
1. Baron, P., Urban, J., Sagawa, H., Möller, J., Murtagh, D. P., Mendrok, J., Dupuy, E., Sato, T. O., Ochiai, S., Suzuki, K., Manabe, T., Nishibori, T., Kikuchi, K., Sato, R., Takayanagi, M., Murayama, Y., Shiotani, M., and Kasai, Y.: The Level 2 research product algorithms for the Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES), Atmos. Meas. Tech., 4, 2105–2124, https://doi.org/10.5194/amt-4-2105-2011, 2011. 2. Drouin, B. J. and Gamache, R. R.: Temperature dependent air-broadened linewidths of ozone rotational transitions, J. Mol. Spectrosc., 251, 194–202, https://doi.org/10.1016/j.jms.2008.02.016, 2008. 3. Gao, Y. Q. and Marcus, R. A.: Strange and unconventional isotope effects in ozone formation, Science, 293, 259–263, https://doi.org/10.1126/science.1058528, 2001. 4. Gao, Y. Q. and Marcus, R. A.: On the theory of the strange and unconventional isotopic effects in ozone formation, J. Chem. Phys., 116, 137–154, https://doi.org/10.1063/1.1415448, 2002. 5. Hathorn, B. C. and Marcus, R. A.: An intramolecular theory of the mass-independent isotope effect for ozone. I, J. Chem. Phys., 111, 4087–4100, https://doi.org/10.1063/1.480267, 1999.
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|