Retrieved tropospheric and stratospheric BrO columns over Lauder, New Zealand
Spectroscopic measurements of BrO using direct sun and zenith‐sky viewing geometries are combined in an optimal estimation retrieval algorithm to obtain tropospheric and stratospheric columns of BrO. Seventy‐two twilight periods are investigated over Lauder, New Zealand (45.0°S, 169.7°E), between Ma...
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| Veröffentlicht in: | Journal of Geophysical Research. D. Atmospheres 2004-07, Vol.109 (D14), p.D14304.1-n/a |
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| container_title | Journal of Geophysical Research. D. Atmospheres |
| container_volume | 109 |
| creator | Schofield, R. Kreher, K. Connor, B. J. Johnston, P. V. Thomas, A. Shooter, D. Chipperfield, M. P. Rodgers, C. D. Mount, G. H. |
| description | Spectroscopic measurements of BrO using direct sun and zenith‐sky viewing geometries are combined in an optimal estimation retrieval algorithm to obtain tropospheric and stratospheric columns of BrO. Seventy‐two twilight periods are investigated over Lauder, New Zealand (45.0°S, 169.7°E), between March 2001 and April 2003. A direct comparison between tropospheric and stratospheric columns retrieved at 80°, 84°, and 87° solar zenith angles (SZAs) from the spectroscopic measurements and those calculated by the three‐dimensional chemical transport model SLIMCAT shows good agreement. The stratospheric Bry loading of 21 pptv from the SLIMCAT calculations is consistent with the ground‐based measurements. The seasonal and diurnal variation of the stratospheric BrO columns evident from the ground‐based measurement retrievals is well described by the SLIMCAT model. The tropospheric column retrievals illustrate a high variability with a mean value of 0.2 pptv if the troposphere is assumed to be well mixed. An upper limit of 0.9 pptv is established for the ubiquitous BrO tropospheric column at 80° under cloud free conditions. |
| doi_str_mv | 10.1029/2003JD004463 |
| format | Article |
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The stratospheric Bry loading of 21 pptv from the SLIMCAT calculations is consistent with the ground‐based measurements. The seasonal and diurnal variation of the stratospheric BrO columns evident from the ground‐based measurement retrievals is well described by the SLIMCAT model. The tropospheric column retrievals illustrate a high variability with a mean value of 0.2 pptv if the troposphere is assumed to be well mixed. An upper limit of 0.9 pptv is established for the ubiquitous BrO tropospheric column at 80° under cloud free conditions.</description><identifier>ISSN: 0148-0227</identifier><identifier>EISSN: 2156-2202</identifier><identifier>DOI: 10.1029/2003JD004463</identifier><language>eng</language><publisher>Washington, DC: Blackwell Publishing Ltd</publisher><subject>bromine ; diurnal variation ; Earth, ocean, space ; Exact sciences and technology ; remote sensing ; retrieval ; troposphere</subject><ispartof>Journal of Geophysical Research. D. 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A direct comparison between tropospheric and stratospheric columns retrieved at 80°, 84°, and 87° solar zenith angles (SZAs) from the spectroscopic measurements and those calculated by the three‐dimensional chemical transport model SLIMCAT shows good agreement. The stratospheric Bry loading of 21 pptv from the SLIMCAT calculations is consistent with the ground‐based measurements. The seasonal and diurnal variation of the stratospheric BrO columns evident from the ground‐based measurement retrievals is well described by the SLIMCAT model. The tropospheric column retrievals illustrate a high variability with a mean value of 0.2 pptv if the troposphere is assumed to be well mixed. An upper limit of 0.9 pptv is established for the ubiquitous BrO tropospheric column at 80° under cloud free conditions.</description><subject>bromine</subject><subject>diurnal variation</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>remote sensing</subject><subject>retrieval</subject><subject>troposphere</subject><issn>0148-0227</issn><issn>2156-2202</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNqFkE1Lw0AQhhdRsNTe_AG56Mno7Eeym6NajdbaQlEKXpbNZoLRtIm7qR__3kiletK5DAzP-87MS8g-hWMKLDlhAHw0BBAi5lukx2gUh4wB2yY9oEKFwJjcJQPvn6ArEcUCaI_czrB1Jb5iHrSubmrfPKIrbWCWeeBbZ9rN5MxNA1tXq8XSB_UrumBsVjm6o2CCb8EDmqqT7JGdwlQeB9-9T-4vL-7Or8LxNL0-Px2HNqIUwkRIniUAEaOUWmWkjVHmhcgkJpGxkhU0E0bGSklhuSkYL2wSmzzrnlMWkffJ4dq3cfXLCn2rF6W3WHU3YL3ymikuhYzhX5AqEEpR0YFHa9C62nuHhW5cuTDuQ1PQX_nq3_l2-MG3r_HWVIUzS1v6H023WiZKdhxfc29lhR9_eupROhtS-jXqk3CtKn2L7xuVcc86llxGej5JtRrO5-oqTfUN_wQERpbv</recordid><startdate>20040727</startdate><enddate>20040727</enddate><creator>Schofield, R.</creator><creator>Kreher, K.</creator><creator>Connor, B. 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H.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of Geophysical Research. D. Atmospheres</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Schofield, R.</au><au>Kreher, K.</au><au>Connor, B. J.</au><au>Johnston, P. V.</au><au>Thomas, A.</au><au>Shooter, D.</au><au>Chipperfield, M. P.</au><au>Rodgers, C. D.</au><au>Mount, G. H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Retrieved tropospheric and stratospheric BrO columns over Lauder, New Zealand</atitle><jtitle>Journal of Geophysical Research. D. Atmospheres</jtitle><addtitle>J. Geophys. Res</addtitle><date>2004-07-27</date><risdate>2004</risdate><volume>109</volume><issue>D14</issue><spage>D14304.1</spage><epage>n/a</epage><pages>D14304.1-n/a</pages><issn>0148-0227</issn><eissn>2156-2202</eissn><abstract>Spectroscopic measurements of BrO using direct sun and zenith‐sky viewing geometries are combined in an optimal estimation retrieval algorithm to obtain tropospheric and stratospheric columns of BrO. Seventy‐two twilight periods are investigated over Lauder, New Zealand (45.0°S, 169.7°E), between March 2001 and April 2003. A direct comparison between tropospheric and stratospheric columns retrieved at 80°, 84°, and 87° solar zenith angles (SZAs) from the spectroscopic measurements and those calculated by the three‐dimensional chemical transport model SLIMCAT shows good agreement. The stratospheric Bry loading of 21 pptv from the SLIMCAT calculations is consistent with the ground‐based measurements. The seasonal and diurnal variation of the stratospheric BrO columns evident from the ground‐based measurement retrievals is well described by the SLIMCAT model. The tropospheric column retrievals illustrate a high variability with a mean value of 0.2 pptv if the troposphere is assumed to be well mixed. An upper limit of 0.9 pptv is established for the ubiquitous BrO tropospheric column at 80° under cloud free conditions.</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2003JD004463</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | bromine diurnal variation Earth, ocean, space Exact sciences and technology remote sensing retrieval troposphere |
| title | Retrieved tropospheric and stratospheric BrO columns over Lauder, New Zealand |
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