Hydrogen peroxide in the marine boundary layer over the South Atlantic during the OOMPH cruise in March 2007
In the OOMPH (Ocean Organics Modifying Particles in both Hemispheres) project a ship measurement cruise took place in the late austral summer from 01 to 23 March 2007. The French research vessel Marion Dufresne sailed from Punta Arenas, Chile (70.85° W, 53.12° S), to Réunion island (55.36° E, 21.06°...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , |
Format: | Text |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-15-6971-2015 https://www.atmos-chem-phys.net/15/6971/2015/ |
id |
ftcopernicus:oai:publications.copernicus.org:acp27787 |
---|---|
record_format |
openpolar |
spelling |
ftcopernicus:oai:publications.copernicus.org:acp27787 2023-05-15T18:21:04+02:00 Hydrogen peroxide in the marine boundary layer over the South Atlantic during the OOMPH cruise in March 2007 Fischer, H. Pozzer, A. Schmitt, T. Jöckel, P. Klippel, T. Taraborrelli, D. Lelieveld, J. 2018-09-06 application/pdf https://doi.org/10.5194/acp-15-6971-2015 https://www.atmos-chem-phys.net/15/6971/2015/ eng eng doi:10.5194/acp-15-6971-2015 https://www.atmos-chem-phys.net/15/6971/2015/ eISSN: 1680-7324 Text 2018 ftcopernicus https://doi.org/10.5194/acp-15-6971-2015 2019-12-24T09:53:20Z In the OOMPH (Ocean Organics Modifying Particles in both Hemispheres) project a ship measurement cruise took place in the late austral summer from 01 to 23 March 2007. The French research vessel Marion Dufresne sailed from Punta Arenas, Chile (70.85° W, 53.12° S), to Réunion island (55.36° E, 21.06° S) across the South Atlantic Ocean. In situ measurements of hydrogen peroxide, methylhydroperoxide and ozone were performed and are compared to simulations with the atmospheric chemistry global circulation model EMAC (ECHAM/MESSy Atmospheric Chemistry). The model generally reproduces the measured trace gas levels, but it underestimates hydrogen peroxide mixing ratios at high wind speeds, indicating too-strong dry deposition to the ocean surface. An interesting feature during the cruise is a strong increase of hydrogen peroxide, methylhydroperoxide and ozone shortly after midnight off the west coast of Africa due to an increase in the boundary layer height, leading to downward transport from the free troposphere, which is qualitatively reproduced by the model. Text South Atlantic Ocean Copernicus Publications: E-Journals Austral Atmospheric Chemistry and Physics 15 12 6971 6980 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
In the OOMPH (Ocean Organics Modifying Particles in both Hemispheres) project a ship measurement cruise took place in the late austral summer from 01 to 23 March 2007. The French research vessel Marion Dufresne sailed from Punta Arenas, Chile (70.85° W, 53.12° S), to Réunion island (55.36° E, 21.06° S) across the South Atlantic Ocean. In situ measurements of hydrogen peroxide, methylhydroperoxide and ozone were performed and are compared to simulations with the atmospheric chemistry global circulation model EMAC (ECHAM/MESSy Atmospheric Chemistry). The model generally reproduces the measured trace gas levels, but it underestimates hydrogen peroxide mixing ratios at high wind speeds, indicating too-strong dry deposition to the ocean surface. An interesting feature during the cruise is a strong increase of hydrogen peroxide, methylhydroperoxide and ozone shortly after midnight off the west coast of Africa due to an increase in the boundary layer height, leading to downward transport from the free troposphere, which is qualitatively reproduced by the model. |
format |
Text |
author |
Fischer, H. Pozzer, A. Schmitt, T. Jöckel, P. Klippel, T. Taraborrelli, D. Lelieveld, J. |
spellingShingle |
Fischer, H. Pozzer, A. Schmitt, T. Jöckel, P. Klippel, T. Taraborrelli, D. Lelieveld, J. Hydrogen peroxide in the marine boundary layer over the South Atlantic during the OOMPH cruise in March 2007 |
author_facet |
Fischer, H. Pozzer, A. Schmitt, T. Jöckel, P. Klippel, T. Taraborrelli, D. Lelieveld, J. |
author_sort |
Fischer, H. |
title |
Hydrogen peroxide in the marine boundary layer over the South Atlantic during the OOMPH cruise in March 2007 |
title_short |
Hydrogen peroxide in the marine boundary layer over the South Atlantic during the OOMPH cruise in March 2007 |
title_full |
Hydrogen peroxide in the marine boundary layer over the South Atlantic during the OOMPH cruise in March 2007 |
title_fullStr |
Hydrogen peroxide in the marine boundary layer over the South Atlantic during the OOMPH cruise in March 2007 |
title_full_unstemmed |
Hydrogen peroxide in the marine boundary layer over the South Atlantic during the OOMPH cruise in March 2007 |
title_sort |
hydrogen peroxide in the marine boundary layer over the south atlantic during the oomph cruise in march 2007 |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-15-6971-2015 https://www.atmos-chem-phys.net/15/6971/2015/ |
geographic |
Austral |
geographic_facet |
Austral |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-15-6971-2015 https://www.atmos-chem-phys.net/15/6971/2015/ |
op_doi |
https://doi.org/10.5194/acp-15-6971-2015 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
15 |
container_issue |
12 |
container_start_page |
6971 |
op_container_end_page |
6980 |
_version_ |
1766200123538276352 |