Strong Relationship Between DMS and the Solar Radiation Dose over the Global Surface Ocean

Marine biogenic dimethylsulfide (DMS) is the main natural source of tropospheric sulfur, which may play a key role in cloud formation and albedo over the remote ocean. Through a global data analysis, we found that DMS concentrations are highly positively correlated with the solar radiation dose in the upper mixed layer of the open ocean, irrespective of latitude, plankton biomass, or temperature. This is a necessary condition for the feasibility of a negative feedback in which light-attenuating DMS emissions are in turn driven by the light dose received by the pelagic ecosystem.

[1]  P. Crutzen,et al.  Atmospheric aerosols: Biogeochemical sources and role in atmospheric chemistry , 1997 .

[2]  R. Simó,et al.  Production of atmospheric sulfur by oceanic plankton: biogeochemical, ecological and evolutionary links. , 2001, Trends in ecology & evolution.

[3]  E. Dlugokencky,et al.  Inverse modeling estimates of the global nitrous oxide surface flux from 1998–2001 , 2006 .

[4]  R. Simó.  From cells to globe: approaching the dynamics of DMS(P) in the ocean at multiple scales , 2004 .

[5]  Patrick Meir,et al.  The influence of terrestrial ecosystems on climate. , 2006, Trends in ecology & evolution.

[6]  Giacomo R. DiTullio,et al.  A global database of sea surface dimethylsulfide (DMS) measurements and a procedure to predict sea surface DMS as a function of latitude, longitude, and month , 1999 .

[7]  Paul G. Falkowski,et al.  Evolution of the nitrogen cycle and its influence on the biological sequestration of CO2 in the ocean , 1997, Nature.

[8]  D. Siegel,et al.  Effects of solar radiation on dimethylsulfide cycling in the western Atlantic Ocean , 2006 .

[9]  D. Siegel,et al.  Light‐driven cycling of dimethylsulfide (DMS) in the Sargasso Sea: Closing the loop , 2004 .

[10]  W. Sunda,et al.  An antioxidant function for DMSP and DMS in marine algae , 2002, Nature.

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

[12]  Timothy M. Lenton,et al.  Redfield revisited: 1. Regulation of nitrate, phosphate, and oxygen in the ocean , 2000 .

[13]  J. Dachs,et al.  Global ocean emission of dimethylsulfide predicted from biogeophysical data , 2002 .

[14]  S. Gassó,et al.  What controls CCN seasonality in the Southern Ocean? A statistical analysis based on satellite‐derived chlorophyll and CCN and model‐estimated OH radical and rainfall , 2006 .

[15]  K. Trenberth,et al.  Earth's annual global mean energy budget , 1997 .

[16]  J. Seinfeld,et al.  Marine aerosol formation from biogenic iodine emissions , 2002, Nature.

[17]  Peter S. Liss,et al.  Direct Evidence for a Marine Source of C1 and C2 Alkyl Nitrates , 2002, Science.

[18]  C. Pedrós-Alió,et al.  Role of vertical mixing in controlling the oceanic production of dimethyl sulphide , 1999, Nature.

[19]  P. Falkowski,et al.  Biogeochemical Controls and Feedbacks on Ocean Primary Production , 1998, Science.

[20]  D. Jacob,et al.  Evidence from the Pacific troposphere for large global sources of oxygenated organic compounds , 2001, Nature.

[21]  T. Bates,et al.  Evidence for the climatic role of marine biogenic sulphur , 1987, Nature.

[22]  Daniele Iudicone,et al.  Mixed layer depth over the global ocean: An examination of profile data and a profile-based climatology , 2004 .

[23]  S. Wakeham,et al.  Temporal variability of dimethylsulfide and dimethylsulfoniopropionate in the Sargasso Sea , 1998 .

[24]  Thomas D. Brock,et al.  Calculating solar radiation for ecological studies , 1981 .