Validation of Aura Microwave Limb Sounder BrO observations in the stratosphere
Validation of stratospheric BrO vertical profiles obtained by the Microwave Limb Sounder (MLS) on the Aura satellite is discussed. MLS BrO measurements are compared with expectations of its latitudinal and seasonal dependence, as well as with more localized balloon‐borne measurements of BrO. We desc...
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creator | Kovalenko, L. J. Livesey, N. L. Salawitch, R. J. Camy-Peyret, C. Chipperfield, M. P. Cofield, R. E. Dorf, M. Drouin, B. J. Froidevaux, L. Fuller, R. A. Goutail, F. Jarnot, R. F. Jucks, K. Knosp, B. W. Lambert, A. MacKenzie, I. A. Pfeilsticker, K. Pommereau, J.-P. Read, W. G. Santee, M. L. Schwartz, M. J. Snyder, W. V. Stachnik, R. Stek, P. C. Wagner, P. A. Waters, J. W. |
description | Validation of stratospheric BrO vertical profiles obtained by the Microwave Limb Sounder (MLS) on the Aura satellite is discussed. MLS BrO measurements are compared with expectations of its latitudinal and seasonal dependence, as well as with more localized balloon‐borne measurements of BrO. We describe the expected precision and systematic errors of the version 2.2 retrieval and show that scientific studies using MLS BrO vertical profiles require extensive averaging to increase the signal‐to‐noise ratio to useful values. A monthly zonal mean over a 10° latitude bin (about 3,000 individual profiles) results in a precision of approximately ±4 ppt (∼25% of a typical daytime signal). Moreover, it is necessary to take day/night differences to remove large biases. The pressure range over which the data are considered useful is 10 to 3.2 hPa. Over this range, the estimated accuracy in the day/night difference is about ±20%. The vertical resolution is 5.5 km for 10 to 3.2 hPa. Day/night differences are a good measure of daytime BrO from 10 to 4.6 hPa; for 3.2 hPa the nonnegligible nighttime BrO needs to be accounted for. We infer total inorganic bromine (Bry) to be 22.1 ± 5.5 ppt on the basis of analysis of MLS measurements of BrO, which implies a contribution of 6.5 ± 5.5 ppt to stratospheric bromine from sources other than long‐lived CH3Br and halons. |
doi_str_mv | 10.1029/2007JD008817 |
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J. ; Livesey, N. L. ; Salawitch, R. J. ; Camy-Peyret, C. ; Chipperfield, M. P. ; Cofield, R. E. ; Dorf, M. ; Drouin, B. J. ; Froidevaux, L. ; Fuller, R. A. ; Goutail, F. ; Jarnot, R. F. ; Jucks, K. ; Knosp, B. W. ; Lambert, A. ; MacKenzie, I. A. ; Pfeilsticker, K. ; Pommereau, J.-P. ; Read, W. G. ; Santee, M. L. ; Schwartz, M. J. ; Snyder, W. V. ; Stachnik, R. ; Stek, P. C. ; Wagner, P. A. ; Waters, J. W.</creator><creatorcontrib>Kovalenko, L. J. ; Livesey, N. L. ; Salawitch, R. J. ; Camy-Peyret, C. ; Chipperfield, M. P. ; Cofield, R. E. ; Dorf, M. ; Drouin, B. J. ; Froidevaux, L. ; Fuller, R. A. ; Goutail, F. ; Jarnot, R. F. ; Jucks, K. ; Knosp, B. W. ; Lambert, A. ; MacKenzie, I. A. ; Pfeilsticker, K. ; Pommereau, J.-P. ; Read, W. G. ; Santee, M. L. ; Schwartz, M. J. ; Snyder, W. V. ; Stachnik, R. ; Stek, P. C. ; Wagner, P. A. ; Waters, J. W.</creatorcontrib><description>Validation of stratospheric BrO vertical profiles obtained by the Microwave Limb Sounder (MLS) on the Aura satellite is discussed. MLS BrO measurements are compared with expectations of its latitudinal and seasonal dependence, as well as with more localized balloon‐borne measurements of BrO. We describe the expected precision and systematic errors of the version 2.2 retrieval and show that scientific studies using MLS BrO vertical profiles require extensive averaging to increase the signal‐to‐noise ratio to useful values. A monthly zonal mean over a 10° latitude bin (about 3,000 individual profiles) results in a precision of approximately ±4 ppt (∼25% of a typical daytime signal). Moreover, it is necessary to take day/night differences to remove large biases. The pressure range over which the data are considered useful is 10 to 3.2 hPa. Over this range, the estimated accuracy in the day/night difference is about ±20%. The vertical resolution is 5.5 km for 10 to 3.2 hPa. Day/night differences are a good measure of daytime BrO from 10 to 4.6 hPa; for 3.2 hPa the nonnegligible nighttime BrO needs to be accounted for. We infer total inorganic bromine (Bry) to be 22.1 ± 5.5 ppt on the basis of analysis of MLS measurements of BrO, which implies a contribution of 6.5 ± 5.5 ppt to stratospheric bromine from sources other than long‐lived CH3Br and halons.</description><identifier>ISSN: 0148-0227</identifier><identifier>ISSN: 2169-897X</identifier><identifier>EISSN: 2156-2202</identifier><identifier>EISSN: 2169-8996</identifier><identifier>DOI: 10.1029/2007JD008817</identifier><language>eng</language><publisher>Blackwell Publishing Ltd</publisher><subject>Atmospheric and Oceanic Physics ; Bromine ; bromine monoxide ; Daytime ; Halons ; Latitude ; Limbs ; Microwaves ; MLS ; Night ; Physics ; stratosphere ; Systematic errors</subject><ispartof>Journal of Geophysical Research: Atmospheres, 2007-12, Vol.112 (D24), p.n/a</ispartof><rights>Copyright 2007 by the American Geophysical Union.</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5195-3adb800c2a5532f891d3e2e7f880dba9c9099fe4be029b959bdbc2905b49b7643</citedby><cites>FETCH-LOGICAL-c5195-3adb800c2a5532f891d3e2e7f880dba9c9099fe4be029b959bdbc2905b49b7643</cites><orcidid>0000-0002-8285-9526 ; 0000-0002-1431-1542</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2007JD008817$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2007JD008817$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,315,781,785,886,1418,1434,11519,27929,27930,45579,45580,46414,46473,46838,46897</link.rule.ids><backlink>$$Uhttps://hal.science/hal-00200541$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Kovalenko, L. J.</creatorcontrib><creatorcontrib>Livesey, N. L.</creatorcontrib><creatorcontrib>Salawitch, R. J.</creatorcontrib><creatorcontrib>Camy-Peyret, C.</creatorcontrib><creatorcontrib>Chipperfield, M. P.</creatorcontrib><creatorcontrib>Cofield, R. E.</creatorcontrib><creatorcontrib>Dorf, M.</creatorcontrib><creatorcontrib>Drouin, B. J.</creatorcontrib><creatorcontrib>Froidevaux, L.</creatorcontrib><creatorcontrib>Fuller, R. A.</creatorcontrib><creatorcontrib>Goutail, F.</creatorcontrib><creatorcontrib>Jarnot, R. F.</creatorcontrib><creatorcontrib>Jucks, K.</creatorcontrib><creatorcontrib>Knosp, B. W.</creatorcontrib><creatorcontrib>Lambert, A.</creatorcontrib><creatorcontrib>MacKenzie, I. A.</creatorcontrib><creatorcontrib>Pfeilsticker, K.</creatorcontrib><creatorcontrib>Pommereau, J.-P.</creatorcontrib><creatorcontrib>Read, W. G.</creatorcontrib><creatorcontrib>Santee, M. L.</creatorcontrib><creatorcontrib>Schwartz, M. J.</creatorcontrib><creatorcontrib>Snyder, W. V.</creatorcontrib><creatorcontrib>Stachnik, R.</creatorcontrib><creatorcontrib>Stek, P. C.</creatorcontrib><creatorcontrib>Wagner, P. A.</creatorcontrib><creatorcontrib>Waters, J. W.</creatorcontrib><title>Validation of Aura Microwave Limb Sounder BrO observations in the stratosphere</title><title>Journal of Geophysical Research: Atmospheres</title><addtitle>J. Geophys. Res</addtitle><description>Validation of stratospheric BrO vertical profiles obtained by the Microwave Limb Sounder (MLS) on the Aura satellite is discussed. MLS BrO measurements are compared with expectations of its latitudinal and seasonal dependence, as well as with more localized balloon‐borne measurements of BrO. We describe the expected precision and systematic errors of the version 2.2 retrieval and show that scientific studies using MLS BrO vertical profiles require extensive averaging to increase the signal‐to‐noise ratio to useful values. A monthly zonal mean over a 10° latitude bin (about 3,000 individual profiles) results in a precision of approximately ±4 ppt (∼25% of a typical daytime signal). Moreover, it is necessary to take day/night differences to remove large biases. The pressure range over which the data are considered useful is 10 to 3.2 hPa. Over this range, the estimated accuracy in the day/night difference is about ±20%. The vertical resolution is 5.5 km for 10 to 3.2 hPa. Day/night differences are a good measure of daytime BrO from 10 to 4.6 hPa; for 3.2 hPa the nonnegligible nighttime BrO needs to be accounted for. We infer total inorganic bromine (Bry) to be 22.1 ± 5.5 ppt on the basis of analysis of MLS measurements of BrO, which implies a contribution of 6.5 ± 5.5 ppt to stratospheric bromine from sources other than long‐lived CH3Br and halons.</description><subject>Atmospheric and Oceanic Physics</subject><subject>Bromine</subject><subject>bromine monoxide</subject><subject>Daytime</subject><subject>Halons</subject><subject>Latitude</subject><subject>Limbs</subject><subject>Microwaves</subject><subject>MLS</subject><subject>Night</subject><subject>Physics</subject><subject>stratosphere</subject><subject>Systematic errors</subject><issn>0148-0227</issn><issn>2169-897X</issn><issn>2156-2202</issn><issn>2169-8996</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNp90ctuEzEUBmALgUTUdscDeIVAYujxbWa8DC2krULKPVI3lj1zRjFM4mBP0vbt6zJVxareWLK-37LPT8grBu8ZcH3MAaqLU4C6ZtUzMuFMlQXnwJ-TCTBZF8B59ZIcpfQb8pKqlMAmZPHL9r61gw8bGjo63UVLP_smhmu7Rzr3a0e_h92mxUg_xEsaXMK4_8cT9Rs6rJCmIdohpO0KIx6SF53tEx497Afk56ePP07Oivnl7PxkOi8axbQqhG1dDdBwq5TgXa1ZK5Bj1dU1tM7qRoPWHUqH-WdOK-1a13ANykntqlKKA_J2vHdle7ONfm3jrQnWm7Pp3NyfAeR5KMn2LNvXo93G8HeHaTBrnxrse7vBsEuGZ1eCFBm-eRKySgBoyaDM9N1I86RSitg9PoKBua_D_F9H5mLk177H2yetuZh9O2UyF5RTxZjyacCbx5SNf0xZiUqZ5WJmrvSXq8Xy69KU4g7DX5jB</recordid><startdate>20071227</startdate><enddate>20071227</enddate><creator>Kovalenko, L. J.</creator><creator>Livesey, N. L.</creator><creator>Salawitch, R. J.</creator><creator>Camy-Peyret, C.</creator><creator>Chipperfield, M. P.</creator><creator>Cofield, R. E.</creator><creator>Dorf, M.</creator><creator>Drouin, B. J.</creator><creator>Froidevaux, L.</creator><creator>Fuller, R. A.</creator><creator>Goutail, F.</creator><creator>Jarnot, R. F.</creator><creator>Jucks, K.</creator><creator>Knosp, B. W.</creator><creator>Lambert, A.</creator><creator>MacKenzie, I. A.</creator><creator>Pfeilsticker, K.</creator><creator>Pommereau, J.-P.</creator><creator>Read, W. G.</creator><creator>Santee, M. L.</creator><creator>Schwartz, M. J.</creator><creator>Snyder, W. V.</creator><creator>Stachnik, R.</creator><creator>Stek, P. C.</creator><creator>Wagner, P. A.</creator><creator>Waters, J. W.</creator><general>Blackwell Publishing Ltd</general><general>American Geophysical Union</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope><scope>7TG</scope><scope>7TV</scope><scope>C1K</scope><scope>KL.</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0002-8285-9526</orcidid><orcidid>https://orcid.org/0000-0002-1431-1542</orcidid></search><sort><creationdate>20071227</creationdate><title>Validation of Aura Microwave Limb Sounder BrO observations in the stratosphere</title><author>Kovalenko, L. J. ; Livesey, N. L. ; Salawitch, R. J. ; Camy-Peyret, C. ; Chipperfield, M. P. ; Cofield, R. E. ; Dorf, M. ; Drouin, B. J. ; Froidevaux, L. ; Fuller, R. A. ; Goutail, F. ; Jarnot, R. F. ; Jucks, K. ; Knosp, B. W. ; Lambert, A. ; MacKenzie, I. A. ; Pfeilsticker, K. ; Pommereau, J.-P. ; Read, W. G. ; Santee, M. L. ; Schwartz, M. J. ; Snyder, W. 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W.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Pollution Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Journal of Geophysical Research: Atmospheres</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kovalenko, L. J.</au><au>Livesey, N. L.</au><au>Salawitch, R. J.</au><au>Camy-Peyret, C.</au><au>Chipperfield, M. P.</au><au>Cofield, R. E.</au><au>Dorf, M.</au><au>Drouin, B. J.</au><au>Froidevaux, L.</au><au>Fuller, R. A.</au><au>Goutail, F.</au><au>Jarnot, R. F.</au><au>Jucks, K.</au><au>Knosp, B. W.</au><au>Lambert, A.</au><au>MacKenzie, I. A.</au><au>Pfeilsticker, K.</au><au>Pommereau, J.-P.</au><au>Read, W. G.</au><au>Santee, M. L.</au><au>Schwartz, M. J.</au><au>Snyder, W. V.</au><au>Stachnik, R.</au><au>Stek, P. C.</au><au>Wagner, P. A.</au><au>Waters, J. W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Validation of Aura Microwave Limb Sounder BrO observations in the stratosphere</atitle><jtitle>Journal of Geophysical Research: Atmospheres</jtitle><addtitle>J. Geophys. Res</addtitle><date>2007-12-27</date><risdate>2007</risdate><volume>112</volume><issue>D24</issue><epage>n/a</epage><issn>0148-0227</issn><issn>2169-897X</issn><eissn>2156-2202</eissn><eissn>2169-8996</eissn><abstract>Validation of stratospheric BrO vertical profiles obtained by the Microwave Limb Sounder (MLS) on the Aura satellite is discussed. MLS BrO measurements are compared with expectations of its latitudinal and seasonal dependence, as well as with more localized balloon‐borne measurements of BrO. We describe the expected precision and systematic errors of the version 2.2 retrieval and show that scientific studies using MLS BrO vertical profiles require extensive averaging to increase the signal‐to‐noise ratio to useful values. A monthly zonal mean over a 10° latitude bin (about 3,000 individual profiles) results in a precision of approximately ±4 ppt (∼25% of a typical daytime signal). Moreover, it is necessary to take day/night differences to remove large biases. The pressure range over which the data are considered useful is 10 to 3.2 hPa. Over this range, the estimated accuracy in the day/night difference is about ±20%. The vertical resolution is 5.5 km for 10 to 3.2 hPa. Day/night differences are a good measure of daytime BrO from 10 to 4.6 hPa; for 3.2 hPa the nonnegligible nighttime BrO needs to be accounted for. We infer total inorganic bromine (Bry) to be 22.1 ± 5.5 ppt on the basis of analysis of MLS measurements of BrO, which implies a contribution of 6.5 ± 5.5 ppt to stratospheric bromine from sources other than long‐lived CH3Br and halons.</abstract><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2007JD008817</doi><tpages>17</tpages><orcidid>https://orcid.org/0000-0002-8285-9526</orcidid><orcidid>https://orcid.org/0000-0002-1431-1542</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Atmospheric and Oceanic Physics Bromine bromine monoxide Daytime Halons Latitude Limbs Microwaves MLS Night Physics stratosphere Systematic errors |
title | Validation of Aura Microwave Limb Sounder BrO observations in the stratosphere |
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