Topic I: Origin of regional sea level changes at decadal-to-centennial time scales

  • Quantifying natural variability using observations and calibrated reconstructions; determining the role of climate modes (e.g., ENSO, IOD, PDO, SAM, NAO, AMO) and internal variability on sea level; quantifying the role of ocean circulation in shaping regional sea level changes; assessing the relative role of internal climate variability.
  • Investigating the causes of contemporary global and regional sea level change in the cryosphere, the atmosphere, and the ocean as well as in the terrestrial hydrological cycle; separating natural variability from anthropogenic forcing; attribution of regional sea level change to natural (e.g., solar, volcanic) and anthropogenic (e.g., tropospheric aerosols, greenhouse gases) radiative forcing agents.
  • Assessing the role of the cryospheric and terrestrial water cycle in regional sea level; understanding and reducing uncertainties in mass and steric contributions to contemporary sea level budgets at global, regional and local spatial scales.

Approach

The work program of SeaLevel is structured in four basic topics, which are addressed by several working groups: 

Topic I

Origin of regional sea level changes at decadal-to-centennial time scale

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Topic II

Historic sea level estimates (paleo time scale)

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Topic III

Sea level projections

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Topic IV

Observations and calibrated reconstructions

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