HCl and ClO profiles inside the Antarctic vortex as observed by SMILES in November 2009: comparisons with MLS and ACE-FTS instruments
We present vertical profiles of hydrogen chloride (HCl) and chlorine monoxide (ClO) as observed by the Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) on the International Space Station (ISS) inside the Antarctic vortex on 19–24 November 2009. The SMILES HCl value reveals 2.8–3.1 p...
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ftdoajarticles:oai:doaj.org/article:e660f8e91e884ff39bae1d6a5e4dd3a2 2023-05-15T13:46:16+02:00 HCl and ClO profiles inside the Antarctic vortex as observed by SMILES in November 2009: comparisons with MLS and ACE-FTS instruments T. Sugita Y. Kasai Y. Terao S. Hayashida G. L. Manney W. H. Daffer H. Sagawa M. Suzuki M. Shiotani K. A. Walker C. D. Boone P. F. Bernath 2013-11-01T00:00:00Z https://doi.org/10.5194/amt-6-3099-2013 https://doaj.org/article/e660f8e91e884ff39bae1d6a5e4dd3a2 EN eng Copernicus Publications http://www.atmos-meas-tech.net/6/3099/2013/amt-6-3099-2013.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 1867-1381 1867-8548 doi:10.5194/amt-6-3099-2013 https://doaj.org/article/e660f8e91e884ff39bae1d6a5e4dd3a2 Atmospheric Measurement Techniques, Vol 6, Iss 11, Pp 3099-3113 (2013) Environmental engineering TA170-171 Earthwork. Foundations TA715-787 article 2013 ftdoajarticles https://doi.org/10.5194/amt-6-3099-2013 2022-12-31T12:16:11Z We present vertical profiles of hydrogen chloride (HCl) and chlorine monoxide (ClO) as observed by the Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) on the International Space Station (ISS) inside the Antarctic vortex on 19–24 November 2009. The SMILES HCl value reveals 2.8–3.1 ppbv between 450 K and 500 K levels in potential temperature (PT). The high value of HCl is highlighted since it is suggested that HCl is a main component of the total inorganic chlorine (Cl y ), defined as Cl y ≃ HCl + ClO + chlorine nitrate (ClONO 2 ), inside the Antarctic vortex in spring, owing to low ozone values. To confirm the quality of two SMILES level 2 (L2) data products provided by the Japan Aerospace Exploration Agency (JAXA) and Japan's National Institute of Information and Communications Technology (NICT), vis-à-vis the partitioning of Cl y , comparisons are made using other satellite data from the Aura Microwave Limb Sounder (MLS) and Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS). HCl values from the SMILES NICT L2 product agree to within 10% (0.3 ppbv) with the MLS HCl data between 450 and 575 K levels in PT and with the ACE-FTS HCl data between 425 and 575 K. The SMILES JAXA L2 product is 10 to 20% (0.2–0.5 ppbv) lower than that from MLS between 400 and 700 K and from ACE-FTS between 500 and 700 K. For ClO in daytime, the difference between SMILES (JAXA and NICT) and MLS is less than ±0.05 ppbv (100 %) between 500 K and 650 K with the ClO values less than 0.2 ppbv. ClONO 2 values as measured by ACE-FTS also reveal 0.2 ppbv at 475–500 K level, resulting in the HCl / Cl y ratios of 0.91–0.95. The HCl / Cl y ratios derived from each retrieval agree to within −5 to 8 % with regard to their averages. The high HCl values and HCl / Cl y ratios observed by the three instruments in the lower stratospheric Antarctic vortex are consistent with previous observations in late Austral spring. Article in Journal/Newspaper Antarc* Antarctic Directory of Open Access Journals: DOAJ Articles Antarctic Austral The Antarctic Atmospheric Measurement Techniques 6 11 3099 3113 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
spellingShingle |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 T. Sugita Y. Kasai Y. Terao S. Hayashida G. L. Manney W. H. Daffer H. Sagawa M. Suzuki M. Shiotani K. A. Walker C. D. Boone P. F. Bernath HCl and ClO profiles inside the Antarctic vortex as observed by SMILES in November 2009: comparisons with MLS and ACE-FTS instruments |
topic_facet |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
description |
We present vertical profiles of hydrogen chloride (HCl) and chlorine monoxide (ClO) as observed by the Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) on the International Space Station (ISS) inside the Antarctic vortex on 19–24 November 2009. The SMILES HCl value reveals 2.8–3.1 ppbv between 450 K and 500 K levels in potential temperature (PT). The high value of HCl is highlighted since it is suggested that HCl is a main component of the total inorganic chlorine (Cl y ), defined as Cl y ≃ HCl + ClO + chlorine nitrate (ClONO 2 ), inside the Antarctic vortex in spring, owing to low ozone values. To confirm the quality of two SMILES level 2 (L2) data products provided by the Japan Aerospace Exploration Agency (JAXA) and Japan's National Institute of Information and Communications Technology (NICT), vis-à-vis the partitioning of Cl y , comparisons are made using other satellite data from the Aura Microwave Limb Sounder (MLS) and Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS). HCl values from the SMILES NICT L2 product agree to within 10% (0.3 ppbv) with the MLS HCl data between 450 and 575 K levels in PT and with the ACE-FTS HCl data between 425 and 575 K. The SMILES JAXA L2 product is 10 to 20% (0.2–0.5 ppbv) lower than that from MLS between 400 and 700 K and from ACE-FTS between 500 and 700 K. For ClO in daytime, the difference between SMILES (JAXA and NICT) and MLS is less than ±0.05 ppbv (100 %) between 500 K and 650 K with the ClO values less than 0.2 ppbv. ClONO 2 values as measured by ACE-FTS also reveal 0.2 ppbv at 475–500 K level, resulting in the HCl / Cl y ratios of 0.91–0.95. The HCl / Cl y ratios derived from each retrieval agree to within −5 to 8 % with regard to their averages. The high HCl values and HCl / Cl y ratios observed by the three instruments in the lower stratospheric Antarctic vortex are consistent with previous observations in late Austral spring. |
format |
Article in Journal/Newspaper |
author |
T. Sugita Y. Kasai Y. Terao S. Hayashida G. L. Manney W. H. Daffer H. Sagawa M. Suzuki M. Shiotani K. A. Walker C. D. Boone P. F. Bernath |
author_facet |
T. Sugita Y. Kasai Y. Terao S. Hayashida G. L. Manney W. H. Daffer H. Sagawa M. Suzuki M. Shiotani K. A. Walker C. D. Boone P. F. Bernath |
author_sort |
T. Sugita |
title |
HCl and ClO profiles inside the Antarctic vortex as observed by SMILES in November 2009: comparisons with MLS and ACE-FTS instruments |
title_short |
HCl and ClO profiles inside the Antarctic vortex as observed by SMILES in November 2009: comparisons with MLS and ACE-FTS instruments |
title_full |
HCl and ClO profiles inside the Antarctic vortex as observed by SMILES in November 2009: comparisons with MLS and ACE-FTS instruments |
title_fullStr |
HCl and ClO profiles inside the Antarctic vortex as observed by SMILES in November 2009: comparisons with MLS and ACE-FTS instruments |
title_full_unstemmed |
HCl and ClO profiles inside the Antarctic vortex as observed by SMILES in November 2009: comparisons with MLS and ACE-FTS instruments |
title_sort |
hcl and clo profiles inside the antarctic vortex as observed by smiles in november 2009: comparisons with mls and ace-fts instruments |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/amt-6-3099-2013 https://doaj.org/article/e660f8e91e884ff39bae1d6a5e4dd3a2 |
geographic |
Antarctic Austral The Antarctic |
geographic_facet |
Antarctic Austral The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Atmospheric Measurement Techniques, Vol 6, Iss 11, Pp 3099-3113 (2013) |
op_relation |
http://www.atmos-meas-tech.net/6/3099/2013/amt-6-3099-2013.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 1867-1381 1867-8548 doi:10.5194/amt-6-3099-2013 https://doaj.org/article/e660f8e91e884ff39bae1d6a5e4dd3a2 |
op_doi |
https://doi.org/10.5194/amt-6-3099-2013 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
6 |
container_issue |
11 |
container_start_page |
3099 |
op_container_end_page |
3113 |
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1766239638029074432 |