• Online Coupled Atmosphere and Ocean Model for Mercury

Online model can capture the feedback and interactions among atmosphere, marine boundary layer, ocean mixed layer, and subsurface ocean. It can thus simulate the influence of short time scale variabilities in wind speed and ocean mixed layer depth change. Our group developed an online coupling of atmosphere (GEOS-Chem) and ocean (MITgcm). For more details of this model, please refer to my previous publications: [Zhang et al. 2019]

• MITgcm-Hg Ocean Mercury Model

This model includes the mercury cyle in the global ocean based on the MITgcm model. It simulates the transport, biogeochemical transformation, partitioning, air-sea exchange, and particle sinking processes of both inorganic mercury and methylmercury. It also includes the bioaccumulation and biomagnification of methylmercury in the marine plankton foodweb. For more details of this model, please refer to my previous publications: [Zhang et al. 2015]; [Zhang et al., 2014]; [Zhang et al., 2014].

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The model codes and results are available upon request. The following figures show the modeled concentrations in the surface ocean for multiple mercury chemical species:

Also, the concentrations in different phytoplankton types (Note, not based on wet or dry weight of cells, but the mass of MeHg in phytoplankton cells per unit volume of seawater):