Input data set: Coastal water levels

Historical coastal water levels from the Hourly Coastal water levels with Counterfactuals (HCC) dataset.

Monthly coverage from 1901 - 1978 and hourly coverage from 1979 - 2015.

The data is provided on an irregular coastal grid, where the grid points are distributed equidistantly along a smoothed global coastlines with a distance of 50 km globally and 10km in Europe, with additional points added for tide gauge stations. The grid is described in Muis et all. (2019, https://doi.org/10.3389/fmars.2020.00263).

The dataset describes relative and geocentric historical coastal water levels, utilizing data from several specialized sources. It incorporates reconstructed water level data from the Hybrid Reconstructions (HR) dataset by Dangendorf et al. (2019), which describes the long-term evolution of historical water levels. Vertical land motion information is provided by Oelsmann et al. (2023), adding crucial details about changes in land elevation. The dataset also integrates a reanalysis of hourly variations in water levels caused by wind, air pressure, and astronomical tides, as detailed in the Coastal Dataset for the Evaluation of Climate Impact (CoDEC) by Muis et al. (2020).

A counterfactual scenario is derived by removing the quadratic trend observed in sea levels from 1900 to 2015. This results in a hypothetical condition where the sea level has been stationary since 1900.

When referring to the HCC dataset, the paper Treu et al. (2023) https://doi.org/10.5194/essd-2023-112 should be cited.

The source datasets are described in Dangendorf et al. (2019) https://doi.org/10.1038/s41558-019-0531-8, Muis et al. (2020) https://doi.org/10.3389/fmars.2020.00263 and Oelsmann et al. (2023) https://doi.org/10.5281/zenodo.8308347"

For ISIMIP participants, these files are available for download on the DKRZ cluster server using the path: /work/bb0820/ISIMIP/ISIMIP3a/InputData/climate/sealevel/