Shipborne MAX-DOAS Measurements of Reactive Halogen Species over the Western Pacific and the Eastern North Atlantic
Reactive halogen species (RHS) exert various influences on the photochemistry of the marine boundary layer. They are formed in the marine atmosphere for example from precursors released from sea salt aerosols, through the degradation of organo-halogens emitted by certain algae, or from inorganic aqu...
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ftoceanrep:oai:oceanrep.geomar.de:13290 2023-05-15T17:30:44+02:00 Shipborne MAX-DOAS Measurements of Reactive Halogen Species over the Western Pacific and the Eastern North Atlantic Großmann, katja Frieß, Udo Tschritter, Jens Peters, Enno Wittrock, Folkard Quack, Birgit Krüger, Kirstin von Glasow, Roland Sommariva, Roberto Pfeilsticker, Klaus Platt, Ulrich 2011 https://oceanrep.geomar.de/id/eprint/13290/ unknown Großmann, k., Frieß, U., Tschritter, J., Peters, E., Wittrock, F., Quack, B., Krüger, K., von Glasow, R., Sommariva, R., Pfeilsticker, K. and Platt, U. (2011) Shipborne MAX-DOAS Measurements of Reactive Halogen Species over the Western Pacific and the Eastern North Atlantic. [Poster] In: EGU General Assembly 2011. , 03.-08.04.2011, Vienna, Austria . Conference or Workshop Item NonPeerReviewed 2011 ftoceanrep 2023-04-07T15:02:10Z Reactive halogen species (RHS) exert various influences on the photochemistry of the marine boundary layer. They are formed in the marine atmosphere for example from precursors released from sea salt aerosols, through the degradation of organo-halogens emitted by certain algae, or from inorganic aqueous reactions. The halogen radicals (BrO and IO) can destroy ozone catalytically, oxidize dimethyl sulfide (DMS) or cause the formation of new aerosol particles. However, there are still open questions concerning the abundance and significance of RHS in the marine boundary layer over the open ocean. Therefore, measurements of BrO and IO abundances were carried out during two ship cruises in two different parts of the ocean, i.e. the Western Pacific and the Eastern Tropical North Atlantic. The measurements were performed with Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS). From the spectral analysis of spectra of scattered sunlight recorded at different elevation angles, information about the vertical distribution and the concentration of trace gases can be derived. During the "TransBrom-Sonne" cruise on the German research vessel “Sonne” in the Western Pacific from Tomakomai, Japan (42°N/ 141°E) to Townsville, Australia (19°S/ 146°E) during October 2009, BrO could be detected in very small amounts in the marine boundary layer (MBL) close to Micronesia and Papua New Guinea, with maximum BrO mixing ratios around 2 ppt and a detection limit of 0.8 ppt. During the whole cruise, tropospheric IO clearly exceeded the detection limit of 0.6 ppt. The bulk of the IO was located in the lower troposphere up to 1 km. In the tropics, the IO concentration reached maximum values between 1 and 2.5 ppt. IO was measured in the Western Pacific for the first time and was used as input for model calculations of tropospheric chemistry. Further measurements of BrO and IO were carried out during a campaign on the German research vessel “Poseidon” in June 2010 in the Eastern North Atlantic from Las Palmas, Gran Canaria via ... Conference Object North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Las Palmas ENVELOPE(-60.674,-60.674,-62.971,-62.971) Pacific |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
unknown |
description |
Reactive halogen species (RHS) exert various influences on the photochemistry of the marine boundary layer. They are formed in the marine atmosphere for example from precursors released from sea salt aerosols, through the degradation of organo-halogens emitted by certain algae, or from inorganic aqueous reactions. The halogen radicals (BrO and IO) can destroy ozone catalytically, oxidize dimethyl sulfide (DMS) or cause the formation of new aerosol particles. However, there are still open questions concerning the abundance and significance of RHS in the marine boundary layer over the open ocean. Therefore, measurements of BrO and IO abundances were carried out during two ship cruises in two different parts of the ocean, i.e. the Western Pacific and the Eastern Tropical North Atlantic. The measurements were performed with Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS). From the spectral analysis of spectra of scattered sunlight recorded at different elevation angles, information about the vertical distribution and the concentration of trace gases can be derived. During the "TransBrom-Sonne" cruise on the German research vessel “Sonne” in the Western Pacific from Tomakomai, Japan (42°N/ 141°E) to Townsville, Australia (19°S/ 146°E) during October 2009, BrO could be detected in very small amounts in the marine boundary layer (MBL) close to Micronesia and Papua New Guinea, with maximum BrO mixing ratios around 2 ppt and a detection limit of 0.8 ppt. During the whole cruise, tropospheric IO clearly exceeded the detection limit of 0.6 ppt. The bulk of the IO was located in the lower troposphere up to 1 km. In the tropics, the IO concentration reached maximum values between 1 and 2.5 ppt. IO was measured in the Western Pacific for the first time and was used as input for model calculations of tropospheric chemistry. Further measurements of BrO and IO were carried out during a campaign on the German research vessel “Poseidon” in June 2010 in the Eastern North Atlantic from Las Palmas, Gran Canaria via ... |
format |
Conference Object |
author |
Großmann, katja Frieß, Udo Tschritter, Jens Peters, Enno Wittrock, Folkard Quack, Birgit Krüger, Kirstin von Glasow, Roland Sommariva, Roberto Pfeilsticker, Klaus Platt, Ulrich |
spellingShingle |
Großmann, katja Frieß, Udo Tschritter, Jens Peters, Enno Wittrock, Folkard Quack, Birgit Krüger, Kirstin von Glasow, Roland Sommariva, Roberto Pfeilsticker, Klaus Platt, Ulrich Shipborne MAX-DOAS Measurements of Reactive Halogen Species over the Western Pacific and the Eastern North Atlantic |
author_facet |
Großmann, katja Frieß, Udo Tschritter, Jens Peters, Enno Wittrock, Folkard Quack, Birgit Krüger, Kirstin von Glasow, Roland Sommariva, Roberto Pfeilsticker, Klaus Platt, Ulrich |
author_sort |
Großmann, katja |
title |
Shipborne MAX-DOAS Measurements of Reactive Halogen Species over the Western Pacific and the Eastern North Atlantic |
title_short |
Shipborne MAX-DOAS Measurements of Reactive Halogen Species over the Western Pacific and the Eastern North Atlantic |
title_full |
Shipborne MAX-DOAS Measurements of Reactive Halogen Species over the Western Pacific and the Eastern North Atlantic |
title_fullStr |
Shipborne MAX-DOAS Measurements of Reactive Halogen Species over the Western Pacific and the Eastern North Atlantic |
title_full_unstemmed |
Shipborne MAX-DOAS Measurements of Reactive Halogen Species over the Western Pacific and the Eastern North Atlantic |
title_sort |
shipborne max-doas measurements of reactive halogen species over the western pacific and the eastern north atlantic |
publishDate |
2011 |
url |
https://oceanrep.geomar.de/id/eprint/13290/ |
long_lat |
ENVELOPE(-60.674,-60.674,-62.971,-62.971) |
geographic |
Las Palmas Pacific |
geographic_facet |
Las Palmas Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Großmann, k., Frieß, U., Tschritter, J., Peters, E., Wittrock, F., Quack, B., Krüger, K., von Glasow, R., Sommariva, R., Pfeilsticker, K. and Platt, U. (2011) Shipborne MAX-DOAS Measurements of Reactive Halogen Species over the Western Pacific and the Eastern North Atlantic. [Poster] In: EGU General Assembly 2011. , 03.-08.04.2011, Vienna, Austria . |
_version_ |
1766127628902727680 |