Modelling the influence of dimethyl sulphide on aerosol production in the marine boundary layer

It has been postulated that dimethyl sulphide (DMS) emissions from the oceans can produce new condensation nuclei and eventually cloud condensation nuclei. Thus, DMS may have a significant influence on the Earth's radiation budget. A study of this postulate has been conducted for marine boundary layer conditions using a newly developed chemistry–aerosol–cloud (CAC) modelling system. The CAC modelling system is a variable heterogeneous chemistry model including aerosol physics using the modal concept. A series of simulations describing the clean marine atmosphere with variations of DMS emissions are presented. These simulations show that DMS can increase the particle number concentration of non sea-salt sulphate in accumulation mode from 10% to 25% under clean marine atmospheric conditions, and the total production of accumulation mode particles from 5% to 15%. Furthermore, the importance of including a DMS loss to the liquid-phase aerosols is shown. If this link is not included then the number of particles in the accumulation mode can be increased by a factor up to 8.

[1]  J. Seinfeld,et al.  Aerosol production and growth in the marine boundary layer , 1994 .

[2]  T. Bates,et al.  Regional and seasonal variations in the flux of oceanic dimethylsulfide to the atmosphere , 1987 .

[3]  Alexander Baklanov,et al.  Parameterisation of radionuclide deposition in atmospheric long-range transport modelling , 2001 .

[4]  S. Warren,et al.  Oceanic phytoplankton, atmospheric sulphur, cloud albedo and climate , 1987, Nature.

[5]  B. Vogel,et al.  Intercomparison of the gas-phase chemistry in several chemistry and transport models , 1998 .

[6]  F. Kirchner,et al.  A New Mechanism for Regional Atmospheric Chemistry Modelling A contribution to subproject CMD , 1999 .

[7]  Andrew J. Weaver.  The Science of Climate Change , 2003 .

[8]  Liisa Pirjola,et al.  Can new particle formation occur in the clean marine boundary layer , 2000 .

[9]  S. Pandis,et al.  Dimethylsulfide chemistry in the remote marine atmosphere: Evaluation and sensitivity analysis of available mechanisms , 1997 .

[10]  F. Kirchner,et al.  A new mechanism for regional atmospheric chemistry modeling , 1997 .

[11]  A. Wexler,et al.  Post-fog nucleation of H2SO4H2O particles in smog , 1994 .

[12]  J. Seinfeld,et al.  The relationship between DMS flux and CCN concentration in remote marine regions , 1994 .

[13]  M. H. Smith,et al.  Physicochemical properties of aerosols over the northeast Atlantic: Evidence for wind‐speed‐related submicron sea‐salt aerosol production , 1993 .

[14]  P. Brimblecombe,et al.  Atmospheric Chemistry and Physics Modelling the Contribution of Sea Salt and Dimethyl Sulfide Derived Aerosol to Marine Ccn , 2022 .

[15]  M. Andreae,et al.  Biogenic sulfur emissions and aerosols over the tropical South , 1994 .

[16]  Ian Barnes,et al.  A theoretical study of the reaction between CH3S(OH)CH3 and O2 , 2004 .

[17]  Peter H. McMurry,et al.  Modal Aerosol Dynamics Modeling , 1997 .

[18]  Modelling of Atmospheric Radioactive Aerosol Dynamics and Deposition , 2004 .

[19]  P. Nowacki,et al.  CAPRAM2.3: A Chemical Aqueous Phase Radical Mechanism for Tropospheric Chemistry , 2000 .

[20]  Daniel J. Jacob,et al.  Global inventory of sulfur emissions with 1°×1° resolution , 1992 .

[21]  C. Genthon,et al.  Subdaily variations of atmospheric dimethylsulfide, dimethylsulfoxide, methanesulfonate, and non‐sea‐salt sulfate aerosols in the atmospheric boundary layer at Dumont d'Urville (coastal Antarctica) during summer , 2001 .

[22]  R. Dingenen,et al.  Peroxynitrate formation during the night-time oxidation of dimethylsulfide: Its role as a reservoir species for aerosol formation , 1994 .

[23]  M. Kanakidou,et al.  Diurnal and seasonal variation of atmospheric dimethylsulfoxide at Amsterdam Island in the southern Indian Ocean , 2000 .

[24]  A. Saltelli,et al.  The Role of Multiphase Chemistry in the Oxidation of Dimethylsulphide (DMS). A Latitude Dependent Analysis , 1999 .

[25]  Comment on ``The relationship between DMS flux and CCN concentration in remote marine regions'' by S. N. Pandis, L. M. Russell, and J. H. Seinfeld , 1995 .