Simulating Marine New Particle Formation and Growth Using the M7 Modal Aerosol Dynamics Modal
A modal atmospheric aerosol model (M7) is evaluated in terms of predicting marine new particle formation and growth. Simulations were carried out for three different nucleation schemes involving (1) kinetic self-nucleation of OIO (2) nucleation via OIO activation by H2SO4 and (3) nucleation via OIO...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2010/689763 |
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| author | Ciaran Monahan Henri Vuollekoski Markku Kulmala Colin O'Dowd |
| author_facet | Ciaran Monahan Henri Vuollekoski Markku Kulmala Colin O'Dowd |
| author_sort | Ciaran Monahan |
| collection | DOAJ |
| description | A modal atmospheric aerosol model (M7) is evaluated in terms of predicting marine new particle formation and growth. Simulations were carried out for three different nucleation schemes involving (1) kinetic self-nucleation of OIO (2) nucleation via OIO activation by H2SO4 and (3) nucleation via OIO activation by H2SO4 plus condensation of a low-volatility organic vapour. Peak OIO and H2SO4 vapour concentrations were both limited to 6×106 molecules cm-3 at noontime while the peak organic vapour concentration was limited to 12×106 molecules cm-3. All simulations produced significant concentrations of new particles in the Aitken mode. From a base case particle concentration of 222 cm-3 at radii >15 nm, increases in concentrations to 366 cm-3 were predicted from the OIO-OIO case, 722 cm-3 for the OIO-H2SO4 case, and 1584 cm-3 for the OIO-H2SO4 case with additional condensing organic vapours. The results indicate that open ocean new particle production is feasible for clean conditions; however, new particle production becomes most significant when an additional condensable organic vapour is available to grow the newly formed particles to larger sizes. Comparison to sectional model for a typical case study demonstrated good agreement and the validity of using the modal model. |
| format | Article |
| id | doaj-art-03cce8e967e046819aa4b0f0e04e1244 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-03cce8e967e046819aa4b0f0e04e12442025-02-03T06:44:28ZengWileyAdvances in Meteorology1687-93091687-93172010-01-01201010.1155/2010/689763689763Simulating Marine New Particle Formation and Growth Using the M7 Modal Aerosol Dynamics ModalCiaran Monahan0Henri Vuollekoski1Markku Kulmala2Colin O'Dowd3Centre for Climate and Air Pollution Studies, National University of Ireland Galway, Galway, IrelandDepartment of Physics, University of Helsinki, 00014 Helsinki, FinlandDepartment of Physics, University of Helsinki, 00014 Helsinki, FinlandCentre for Climate and Air Pollution Studies, National University of Ireland Galway, Galway, IrelandA modal atmospheric aerosol model (M7) is evaluated in terms of predicting marine new particle formation and growth. Simulations were carried out for three different nucleation schemes involving (1) kinetic self-nucleation of OIO (2) nucleation via OIO activation by H2SO4 and (3) nucleation via OIO activation by H2SO4 plus condensation of a low-volatility organic vapour. Peak OIO and H2SO4 vapour concentrations were both limited to 6×106 molecules cm-3 at noontime while the peak organic vapour concentration was limited to 12×106 molecules cm-3. All simulations produced significant concentrations of new particles in the Aitken mode. From a base case particle concentration of 222 cm-3 at radii >15 nm, increases in concentrations to 366 cm-3 were predicted from the OIO-OIO case, 722 cm-3 for the OIO-H2SO4 case, and 1584 cm-3 for the OIO-H2SO4 case with additional condensing organic vapours. The results indicate that open ocean new particle production is feasible for clean conditions; however, new particle production becomes most significant when an additional condensable organic vapour is available to grow the newly formed particles to larger sizes. Comparison to sectional model for a typical case study demonstrated good agreement and the validity of using the modal model.http://dx.doi.org/10.1155/2010/689763 |
| spellingShingle | Ciaran Monahan Henri Vuollekoski Markku Kulmala Colin O'Dowd Simulating Marine New Particle Formation and Growth Using the M7 Modal Aerosol Dynamics Modal Advances in Meteorology |
| title | Simulating Marine New Particle Formation and Growth Using the M7 Modal Aerosol Dynamics Modal |
| title_full | Simulating Marine New Particle Formation and Growth Using the M7 Modal Aerosol Dynamics Modal |
| title_fullStr | Simulating Marine New Particle Formation and Growth Using the M7 Modal Aerosol Dynamics Modal |
| title_full_unstemmed | Simulating Marine New Particle Formation and Growth Using the M7 Modal Aerosol Dynamics Modal |
| title_short | Simulating Marine New Particle Formation and Growth Using the M7 Modal Aerosol Dynamics Modal |
| title_sort | simulating marine new particle formation and growth using the m7 modal aerosol dynamics modal |
| url | http://dx.doi.org/10.1155/2010/689763 |
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