Maritime Forum

Gaps in marine data for North Sea - climate and coasts

Published on: Thu, 16/07/2015 - 16:55
Table of Contents
    main gaps are temperature of water below the surface and mass balance of sediments. Records of sea-level rise are quite good for the past 50 years but not before then

     

    The key conclusions for the Climate and Coastal Protection Challenge are as follows:

    • The Climate and Coastal Protection Challenge was partially met with the data available. While one spatial layer was produced (the annual absolute sea level rise for the past 50 years, for illustration purposes), the following spatial layers and time history plots can be produced from suitable datasets:
      • Spatial layer of the annual mean sea level rise for the past 10 and 50 years;
      • Spatial layers of the annual change in sea surface temperature for the past 10, 50 and 100 years;
      • Spatial layers of the annual change in temperature at mid-depth and near-bed for the past 10 years;
      • Time plot of the annual mean sea level rise for each NUTS3 region;
      • Time plot of the annual change in sea surface temperature over the North Sea Basin.
    • The main gaps identified were the lack of long historical observations and the poor spatial coverage of measurements. Only satellite data allows a near global spatial coverage. Sediment mass balance data also seems to be non-existent. Consequently, the following spatial layers and time plots cannot be produced:
      • Spatial layer of the annual mean sea level rise for the past 100 years;
      • Spatial layers of the annual change in temperature at mid-depth and near-bed for the past 50 and 100 years;
      • Spatial layers of the annual sea temperature at midwater and sea bottom over the North Sea Basin;
      • Spatial layer of the sediment mass balance at the coast;
      • Time plot of the annual change in temperature at midwater and sea bottom;
      • Time plot of the sediment mass balance for each NUTS3 region;
      • Time plot of the average annual change in internal energy of sea

    The work was done as part of the North Sea checkpoint project

    Data Adequacy Report - climate change and coasts

    Comments

    • Marco Weydert's picture

      There has been an inventory of bathymetry data in the North Sea of before they were systematically digital. BODC was leading when this was done. (DG RTD paid a part of it). Could these not be used for the last 100 years, even if only parts of the North Sea would be covered? One should be able to get sea level rise with these? Are there no publications that have done this already and could be cited?

      Temperature data in the water column and on the seafloor are an issue. Even today the resolution is low, mostly because of cost.

      By the way, how do the graphs compare to similar graphs published and not necessarily or based on the same data set? How does NS042 compare to European data sets?

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