Climate warming is especially pronounced in the arctic, which has led to decreased seaice coverage and substantial permafrost thawing. Arctic, carbon cycle, ocean, permafrost, sea ice, tundra. Groundwater as a major source of dissolved organic matter. With ongoing global warming, these findings have implications for the biogeochemical carbon cycle, increasing the size of this refractory carbon pool in the arctic ocean. One important component is the enhanced mobilization of soil organic carbon through landuse change. Download the organic carbon cycle in the arctic ocean. In this chapter we summarize the data on organic carbon oc sources from chapters 2 and 3 and the data on oc burial rates from chapters 7. In addition to understanding the basic carbon cycle in the arctic ocean, griffiths team hopes that the results of this baseline study will help evaluate how arctic ocean carbon levels and global. The organic carbon cycle in the arctic ocean rudiger stein.
Sensitivity of the carbon cycle in the arctic to climate change. The fate of the arctic ocean carbon cycle in the face of rapid climate change is of global importance. This study examines the leaching potential of dom, which includes dissolved organic carbon and nitrogen doc and don, from nearshore arctic soils and quantifies inputs of. The impacts of rapid change in the arctic ocean and the potential feedbacks on the ma rine inorganic carbon cycle and airsea co2 exchange. Observations suggest that despite extensive ice coverage. Anthropogenic perturbations have altered the global carbon cycle significantly 1,2. New study provides baseline measurements of carbon in.
Responses in arctic marine carbon cycle processes polar research. Dissolved organic carbon doc in the ocean is thousands of 14 c years old, yet a portion of the doc cycles on much shorter time scales days to decades. Pdf the organic carbon cycle in the arctic ocean researchgate. The benthos of arctic seas and its role for the organic carbon cycle at the seafloor m. To refine the global ocean carbon budget in general and,specifically,to quantify organic carbon burial because it is so important for climatic change, we need detailed measurements of the organic carbon flux in all ocean environments, especially for c tinental margins e. A synthesis of the arctic terrestrial and marine carbon cycles under. Understanding arctic oceans carbon cycle sciencedaily. Dissolved organic carbon doc and total dissolved amino acids tdaa were measured in high chukchi sea and low beaufort sea productivity regions of the western arctic ocean to. Pdf in the preceding chapters, organic carbon sources, pathways and transformation processes at the sea floor have been presented and discussed. The arctic ocean marine carbon cycle biogeosciences. The organic carbon cycle in the arctic ocean request pdf. The organic carbon cycle in the arctic ocean springerlink. This comprehensive inventory places the amount of organic carbon stored in the northern permafrost region at 1,3301,580 billion tons carbon, almost twice as much carbon as currently contained in the atmosphere fig. Pdf the main objective of this chapter is to assess recent fluxes of terrigenous dissolved and particulate organic carbon into the arctic ocean.