Seasonal studies in the polar oceans may provide these parameters. In vitro experimental studies should be done to determine fundamental photochemical and biological responses to variations in radiation. These could include determinations of photochemical quantum yield and biological weighting functions for use in models. These studies, together with longitudinal transects from coastal to open ocean regions will provide various combinations of mixing and water color while maintaining equivalent radiative forcing Lagrangian experiments, combined with shipboard incubations, could allow study of the time course of system response to altered mixing and light regimes. Examination of trace gas processes and fluxes across eddy boundaries will provide contrasting water types and mixing regimes with equivalent radiative forcing.
Eddies also allow time course studies in a stable water mass.
Aerosol chamber experiments using varied light regimes could provide fundamental data on photochemical processing within aerosols for use in transport models. Field collections within dust events, using longitudinal transects for uniform radiation, could provide time course data on radiative processes. Comparisons between aerosols collected during dust and non-dust events may provide insight into material cycling. Sampling of wet deposition from dust and non-dust locations could be compared for speciation. Sampling of trace gas fluxes through seasonal planktonic succession may provide similar insight.