Consistent simulation of bromine chemistry from the marine boundary layer to the stratosphere - Part 1: Model description, sea salt aerosols and pH
This is the first article of a series presenting a detailed analysis of bromine chemistry simulated with the atmospheric chemistry general circulation model ECHAM5/MESSy. Release from sea salt is an important bromine source, hence the model explicitly calculates aerosol chemistry and phase partition...
| Main Authors: | , , , , , , , , , |
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| Outros autores: | |
| Formato: | Journal article |
| Idioma: | English |
| Publicado: |
Copernicus Publications
2008
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| Subjects: |
| _version_ | 1826270227564855296 |
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| author | Kerkweg, A Jöckel, P Pozzer, A Tost, H Sander, R Schulz, M Stier, P Vignati, E Wilson, J Lelieveld, J |
| author2 | European Geosciences Union |
| author_facet | European Geosciences Union Kerkweg, A Jöckel, P Pozzer, A Tost, H Sander, R Schulz, M Stier, P Vignati, E Wilson, J Lelieveld, J |
| author_sort | Kerkweg, A |
| collection | OXFORD |
| description | This is the first article of a series presenting a detailed analysis of bromine chemistry simulated with the atmospheric chemistry general circulation model ECHAM5/MESSy. Release from sea salt is an important bromine source, hence the model explicitly calculates aerosol chemistry and phase partitioning for coarse mode aerosol particles. Many processes including chemical reaction rates are influenced by the particle size distribution, and aerosol associated water strongly affects the aerosol pH. Knowledge of the aerosol pH is important as it determines the aerosol chemistry, e.g., the efficiency of sulphur oxidation and bromine release. Here, we focus on the simulated sea salt aerosol size distribution and the coarse mode aerosol pH. A comparison with available field data shows that the simulated aerosol distributions agree reasonably well within the range of measurements. In spite of the small number of aerosol pH measurements and the uncertainty in its experimental determination, the simulated aerosol pH compares well with the observations. The aerosol pH ranges from alkaline aerosol in areas of strong production down to pH-values of 1 over regions of medium sea salt production and high levels of gas phase acids, mostly polluted regions over the oceans in the Northern Hemisphere. |
| first_indexed | 2024-03-06T21:37:33Z |
| format | Journal article |
| id | oxford-uuid:46ca2938-12a4-4bc2-ac38-9e240e07c9f0 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:37:33Z |
| publishDate | 2008 |
| publisher | Copernicus Publications |
| record_format | dspace |
| spelling | oxford-uuid:46ca2938-12a4-4bc2-ac38-9e240e07c9f02022-03-26T15:15:51ZConsistent simulation of bromine chemistry from the marine boundary layer to the stratosphere - Part 1: Model description, sea salt aerosols and pHJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:46ca2938-12a4-4bc2-ac38-9e240e07c9f0PhysicsEnvironmentAtmospheric chemistryAtmospheric,Oceanic,and Planetary physicsChemistry & allied sciencesEnglishOxford University Research Archive - ValetCopernicus Publications2008Kerkweg, AJöckel, PPozzer, ATost, HSander, RSchulz, MStier, PVignati, EWilson, JLelieveld, JEuropean Geosciences UnionThis is the first article of a series presenting a detailed analysis of bromine chemistry simulated with the atmospheric chemistry general circulation model ECHAM5/MESSy. Release from sea salt is an important bromine source, hence the model explicitly calculates aerosol chemistry and phase partitioning for coarse mode aerosol particles. Many processes including chemical reaction rates are influenced by the particle size distribution, and aerosol associated water strongly affects the aerosol pH. Knowledge of the aerosol pH is important as it determines the aerosol chemistry, e.g., the efficiency of sulphur oxidation and bromine release. Here, we focus on the simulated sea salt aerosol size distribution and the coarse mode aerosol pH. A comparison with available field data shows that the simulated aerosol distributions agree reasonably well within the range of measurements. In spite of the small number of aerosol pH measurements and the uncertainty in its experimental determination, the simulated aerosol pH compares well with the observations. The aerosol pH ranges from alkaline aerosol in areas of strong production down to pH-values of 1 over regions of medium sea salt production and high levels of gas phase acids, mostly polluted regions over the oceans in the Northern Hemisphere. |
| spellingShingle | Physics Environment Atmospheric chemistry Atmospheric,Oceanic,and Planetary physics Chemistry & allied sciences Kerkweg, A Jöckel, P Pozzer, A Tost, H Sander, R Schulz, M Stier, P Vignati, E Wilson, J Lelieveld, J Consistent simulation of bromine chemistry from the marine boundary layer to the stratosphere - Part 1: Model description, sea salt aerosols and pH |
| title | Consistent simulation of bromine chemistry from the marine boundary layer to the stratosphere - Part 1: Model description, sea salt aerosols and pH |
| title_full | Consistent simulation of bromine chemistry from the marine boundary layer to the stratosphere - Part 1: Model description, sea salt aerosols and pH |
| title_fullStr | Consistent simulation of bromine chemistry from the marine boundary layer to the stratosphere - Part 1: Model description, sea salt aerosols and pH |
| title_full_unstemmed | Consistent simulation of bromine chemistry from the marine boundary layer to the stratosphere - Part 1: Model description, sea salt aerosols and pH |
| title_short | Consistent simulation of bromine chemistry from the marine boundary layer to the stratosphere - Part 1: Model description, sea salt aerosols and pH |
| title_sort | consistent simulation of bromine chemistry from the marine boundary layer to the stratosphere part 1 model description sea salt aerosols and ph |
| topic | Physics Environment Atmospheric chemistry Atmospheric,Oceanic,and Planetary physics Chemistry & allied sciences |
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