Nighttime chlorine monoxide observations by the Odin satellite and implications for the ClO/Cl sub(2)O sub(2) equilibrium
We use measurements of chlorine monoxide (ClO) by the SMR instrument onboard the Odin satellite to study the nighttime thermal equilibrium between ClO and its dimer Cl sub(2)O sub(2). Observations performed in the polar vortex during the 2002-2003 Arctic winter showed enhanced amounts of nighttime C...
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| Veröffentlicht in: | Geophysical research letters 2005-06, Vol.32 (11), p.np-np |
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| container_title | Geophysical research letters |
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| creator | Berthet, G Ricaud, P Lefevre, F Le Flochmoeen, E Urban, J Barret, B Lautie, N Dupuy, E De La Noee, J Murtagh, D |
| description | We use measurements of chlorine monoxide (ClO) by the SMR instrument onboard the Odin satellite to study the nighttime thermal equilibrium between ClO and its dimer Cl sub(2)O sub(2). Observations performed in the polar vortex during the 2002-2003 Arctic winter showed enhanced amounts of nighttime ClO over a wide range of stratospheric temperatures (185 < T < 225 K). Odin/SMR measurements are here compared to three-dimensional model calculations using various published estimations of the K sub(eq) equilibrium constant between ClO and Cl sub(2)O sub(2). Our results show that the value of K sub(eq) currently recommended by JPL (Sander et al., 2003) leads to a large underestimation of the observed nighttime ClO amounts, and that a realistic estimation of K sub(eq) must lie between the values determined by Cox and Hayman (1988) and Von Hobe et al. (2005). |
| doi_str_mv | 10.1029/2005GL022649 |
| format | Article |
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Observations performed in the polar vortex during the 2002-2003 Arctic winter showed enhanced amounts of nighttime ClO over a wide range of stratospheric temperatures (185 < T < 225 K). Odin/SMR measurements are here compared to three-dimensional model calculations using various published estimations of the K sub(eq) equilibrium constant between ClO and Cl sub(2)O sub(2). Our results show that the value of K sub(eq) currently recommended by JPL (Sander et al., 2003) leads to a large underestimation of the observed nighttime ClO amounts, and that a realistic estimation of K sub(eq) must lie between the values determined by Cox and Hayman (1988) and Von Hobe et al. (2005).</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1029/2005GL022649</identifier><language>eng</language><subject>Chlorine monoxide ; Dimers ; Onboard ; Sanders ; Satellite-borne instruments ; Satellites ; Three dimensional models ; Winter</subject><ispartof>Geophysical research letters, 2005-06, Vol.32 (11), p.np-np</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Berthet, G</creatorcontrib><creatorcontrib>Ricaud, P</creatorcontrib><creatorcontrib>Lefevre, F</creatorcontrib><creatorcontrib>Le Flochmoeen, E</creatorcontrib><creatorcontrib>Urban, J</creatorcontrib><creatorcontrib>Barret, B</creatorcontrib><creatorcontrib>Lautie, N</creatorcontrib><creatorcontrib>Dupuy, E</creatorcontrib><creatorcontrib>De La Noee, J</creatorcontrib><creatorcontrib>Murtagh, D</creatorcontrib><title>Nighttime chlorine monoxide observations by the Odin satellite and implications for the ClO/Cl sub(2)O sub(2) equilibrium</title><title>Geophysical research letters</title><description>We use measurements of chlorine monoxide (ClO) by the SMR instrument onboard the Odin satellite to study the nighttime thermal equilibrium between ClO and its dimer Cl sub(2)O sub(2). Observations performed in the polar vortex during the 2002-2003 Arctic winter showed enhanced amounts of nighttime ClO over a wide range of stratospheric temperatures (185 < T < 225 K). Odin/SMR measurements are here compared to three-dimensional model calculations using various published estimations of the K sub(eq) equilibrium constant between ClO and Cl sub(2)O sub(2). Our results show that the value of K sub(eq) currently recommended by JPL (Sander et al., 2003) leads to a large underestimation of the observed nighttime ClO amounts, and that a realistic estimation of K sub(eq) must lie between the values determined by Cox and Hayman (1988) and Von Hobe et al. 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Observations performed in the polar vortex during the 2002-2003 Arctic winter showed enhanced amounts of nighttime ClO over a wide range of stratospheric temperatures (185 < T < 225 K). Odin/SMR measurements are here compared to three-dimensional model calculations using various published estimations of the K sub(eq) equilibrium constant between ClO and Cl sub(2)O sub(2). Our results show that the value of K sub(eq) currently recommended by JPL (Sander et al., 2003) leads to a large underestimation of the observed nighttime ClO amounts, and that a realistic estimation of K sub(eq) must lie between the values determined by Cox and Hayman (1988) and Von Hobe et al. (2005).</abstract><doi>10.1029/2005GL022649</doi></addata></record> |
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| ispartof | Geophysical research letters, 2005-06, Vol.32 (11), p.np-np |
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| source | Wiley Free Content; Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Chlorine monoxide Dimers Onboard Sanders Satellite-borne instruments Satellites Three dimensional models Winter |
| title | Nighttime chlorine monoxide observations by the Odin satellite and implications for the ClO/Cl sub(2)O sub(2) equilibrium |
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