Removal of SO2 from the marine boundary layer over the Atlantic Ocean : a case study on the kinetics of the S(IV)oxidation on marine aerosols
Measurements of SO2 and NSS-SO42- were made over the Atlantic Ocean on board the RV Polarstern from October 9 to November 2, 1996, as part of the ALBATROSS campaign. The measurements were performed between 66.7 degrees N and 37.8 degrees S with a mean longitude of approximately 30 degrees W. The mos...
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ftfzjuelichnvdb:oai:juser.fz-juelich.de:44790 2023-05-15T16:52:59+02:00 Removal of SO2 from the marine boundary layer over the Atlantic Ocean : a case study on the kinetics of the S(IV)oxidation on marine aerosols Krischke, U. Staubes, R. Brauers, T. Gautrois, M. Burkert, J. Stöbener, D. Jaeschke, W. DE 2000 https://juser.fz-juelich.de/record/44790 https://juser.fz-juelich.de/search?p=id:%22PreJuSER-44790%22 eng eng Union info:eu-repo/semantics/altIdentifier/issn/0022-1406 info:eu-repo/semantics/altIdentifier/hdl/2128/20493 info:eu-repo/semantics/altIdentifier/issn/0148-0227 info:eu-repo/semantics/altIdentifier/wos/WOS:000087736000006 https://juser.fz-juelich.de/record/44790 https://juser.fz-juelich.de/search?p=id:%22PreJuSER-44790%22 info:eu-repo/semantics/openAccess Journal of geophysical research / Atmospheres 105, 14413 - 14422 (2000). info:eu-repo/classification/ddc/550 J info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2000 ftfzjuelichnvdb 2022-07-14T10:52:57Z Measurements of SO2 and NSS-SO42- were made over the Atlantic Ocean on board the RV Polarstern from October 9 to November 2, 1996, as part of the ALBATROSS campaign. The measurements were performed between 66.7 degrees N and 37.8 degrees S with a mean longitude of approximately 30 degrees W. The most frequent background values for SO2 were found to be 13 parts per trillion by volume (pptv) (0.54 mnol m(-3) at standard ambient temperature and pressure (SATP)) in the Southern Hemisphere, and 15 pptv (0.62 nmol m(-3) SATP) in the Northern Hemisphere. The mean values for total NSS-SO42- in particles with a d > 0.2 mu m were (5.99 +/- 2.93) nmol m(-3) (SATP) in the Southern Hemisphere, and (8.93 +/- 5.29) nmol m(-3) (SATP) in the Northern Hemisphere. An analysis of the size-fractionated aerosol samples (d > 1 mu m and 0.2 mu m < d < 1 mu m) of NSS-SO42-. shows that (34 +/- 13)% of the total NSS-SO42- exists in coarse mode particles with d > 1 mu m. The main fraction of this NSS-SO42-. is most likely produced by the oxidation of dissolved SO2 via heterogeneous reactions occurring in the aqueous phase of coarse mode marine aerosols. A case study on the kinetics of this oxidation pathway was conducted during ALBATROSS. October 12, 1996, the ship sailed in the plume of a volcano on Iceland during its eruption from September 30 to October 13, 1996, as indicated by trajectory analysis and by the measurements of NSS-SO42- SO2, CO, and Hg, An empirical physicochemical approach considering the atmosphere as a natural flow reactor is used for the presented case study. The determined pseudo-first-order reaction rate constant for;the oxidation of SO, on marine aerosols is 3.31 x 10(-4) s(-1) at 25 degrees C. Assuming that the occurrence of coarse mode marine aerosols is the rate-limiting variable of the reaction, the second-order reaction rate constant is found to be 1.32 x 10(-6) cm(3) s(-1) particle(-1) at 25 degrees C. These values are in good agreement with results of previous field experiments as well as with ... Article in Journal/Newspaper Iceland Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) |
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Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) |
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ftfzjuelichnvdb |
language |
English |
topic |
info:eu-repo/classification/ddc/550 J |
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info:eu-repo/classification/ddc/550 J Krischke, U. Staubes, R. Brauers, T. Gautrois, M. Burkert, J. Stöbener, D. Jaeschke, W. Removal of SO2 from the marine boundary layer over the Atlantic Ocean : a case study on the kinetics of the S(IV)oxidation on marine aerosols |
topic_facet |
info:eu-repo/classification/ddc/550 J |
description |
Measurements of SO2 and NSS-SO42- were made over the Atlantic Ocean on board the RV Polarstern from October 9 to November 2, 1996, as part of the ALBATROSS campaign. The measurements were performed between 66.7 degrees N and 37.8 degrees S with a mean longitude of approximately 30 degrees W. The most frequent background values for SO2 were found to be 13 parts per trillion by volume (pptv) (0.54 mnol m(-3) at standard ambient temperature and pressure (SATP)) in the Southern Hemisphere, and 15 pptv (0.62 nmol m(-3) SATP) in the Northern Hemisphere. The mean values for total NSS-SO42- in particles with a d > 0.2 mu m were (5.99 +/- 2.93) nmol m(-3) (SATP) in the Southern Hemisphere, and (8.93 +/- 5.29) nmol m(-3) (SATP) in the Northern Hemisphere. An analysis of the size-fractionated aerosol samples (d > 1 mu m and 0.2 mu m < d < 1 mu m) of NSS-SO42-. shows that (34 +/- 13)% of the total NSS-SO42- exists in coarse mode particles with d > 1 mu m. The main fraction of this NSS-SO42-. is most likely produced by the oxidation of dissolved SO2 via heterogeneous reactions occurring in the aqueous phase of coarse mode marine aerosols. A case study on the kinetics of this oxidation pathway was conducted during ALBATROSS. October 12, 1996, the ship sailed in the plume of a volcano on Iceland during its eruption from September 30 to October 13, 1996, as indicated by trajectory analysis and by the measurements of NSS-SO42- SO2, CO, and Hg, An empirical physicochemical approach considering the atmosphere as a natural flow reactor is used for the presented case study. The determined pseudo-first-order reaction rate constant for;the oxidation of SO, on marine aerosols is 3.31 x 10(-4) s(-1) at 25 degrees C. Assuming that the occurrence of coarse mode marine aerosols is the rate-limiting variable of the reaction, the second-order reaction rate constant is found to be 1.32 x 10(-6) cm(3) s(-1) particle(-1) at 25 degrees C. These values are in good agreement with results of previous field experiments as well as with ... |
format |
Article in Journal/Newspaper |
author |
Krischke, U. Staubes, R. Brauers, T. Gautrois, M. Burkert, J. Stöbener, D. Jaeschke, W. |
author_facet |
Krischke, U. Staubes, R. Brauers, T. Gautrois, M. Burkert, J. Stöbener, D. Jaeschke, W. |
author_sort |
Krischke, U. |
title |
Removal of SO2 from the marine boundary layer over the Atlantic Ocean : a case study on the kinetics of the S(IV)oxidation on marine aerosols |
title_short |
Removal of SO2 from the marine boundary layer over the Atlantic Ocean : a case study on the kinetics of the S(IV)oxidation on marine aerosols |
title_full |
Removal of SO2 from the marine boundary layer over the Atlantic Ocean : a case study on the kinetics of the S(IV)oxidation on marine aerosols |
title_fullStr |
Removal of SO2 from the marine boundary layer over the Atlantic Ocean : a case study on the kinetics of the S(IV)oxidation on marine aerosols |
title_full_unstemmed |
Removal of SO2 from the marine boundary layer over the Atlantic Ocean : a case study on the kinetics of the S(IV)oxidation on marine aerosols |
title_sort |
removal of so2 from the marine boundary layer over the atlantic ocean : a case study on the kinetics of the s(iv)oxidation on marine aerosols |
publisher |
Union |
publishDate |
2000 |
url |
https://juser.fz-juelich.de/record/44790 https://juser.fz-juelich.de/search?p=id:%22PreJuSER-44790%22 |
op_coverage |
DE |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Journal of geophysical research / Atmospheres 105, 14413 - 14422 (2000). |
op_relation |
info:eu-repo/semantics/altIdentifier/issn/0022-1406 info:eu-repo/semantics/altIdentifier/hdl/2128/20493 info:eu-repo/semantics/altIdentifier/issn/0148-0227 info:eu-repo/semantics/altIdentifier/wos/WOS:000087736000006 https://juser.fz-juelich.de/record/44790 https://juser.fz-juelich.de/search?p=id:%22PreJuSER-44790%22 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766043498078797824 |