"Title"

"Shoreline_retreat_EU.nc" contains  probabilistic projections of shoreline retreat w.r.t. 2010 at sandy coastal locations around Europe spaced every 1 km.
The projections are available for every decade (2020-2100) under RCP 4.5 and RCP 8.5 for four different combinations of sandy beach location and nearshore slopes data.
Shoreline retreat is calculated in meters, with positive values describe shoreline moving landwards (i.e., erosion) using the Bruun rule.
NaN values indicate locations that are not sandy according to the sandy beach location dataset used.

For more information on the methods and data, please see Athanasiou et al. 2020.

Variables:

- "longitude"			: longitude of the coastal point in degrees East

- "latitude"			: latitude of the coastal point in degrees North

- "NUTS3_id"			: NUTS3 region code of the point as derived from EUROSTAT

- "beach_data"			: beach dataset used to describe the location of sandy beaches:
						'EUR'	--> Reclassification of the EUROSION dataset (EUROSION, 2004)
						'SDSB' 	--> Satellite Derived Sandy Beaches (Luijendijk et al. 2018)

- "slope_data"			: nearshore slope method used in the Bruun rule model:
						'1/100'	--> Assumption of the same nearshore slope of 1:100 at all sandy locations
						'SVNS'	--> Spatially Variable Nearshore Slopes as derived from Athanasiou et al. 2019

- "RCP"					: Climate change scenario used for the projections of sea level rise (Vousdoukas et al. 2018).
						'RCP45'	--> RCP 4.5
						'RCP85'	--> High end RCP 8.5

- "year"				: Year of the projected shoreline retreat [2020, 2030, 040, 2050, 2060, 2070, 2080, 2090, 2100]

- "percentile"			: Percentile  value of the projected shoreline retreat [5th, 17th, 50th, 83th, 95th, 99th]
	
- "shoreline_retreat" 	: Shoreline retreat in meters relative to the baseline year of 2010

References:

Athanasiou, P., van Dongeren, A., Giardino, A., Vousdoukas, M. I., Ranasinghe, R., & Kwadijk, J. (2020). Uncertainties in projections of sandy beach erosion due to sea level rise: an analysis at the European scale. Scientific Reports, 10(1), 1–14. https://doi.org/10.1038/s41598-020-68576-0

EUROSION. (2004). Living with coastal erosion in Europe: Sediment and Space for Sustainability: PART I - Major findings and Policy Recommendations of the EUROSION project. In Service contract B4-3301/2001/329175/MAR/B3 “Coastal erosion – Evaluation of the need for action”. Directorate General Environment, European Commission.

Luijendijk, A., Hagenaars, G., Ranasinghe, R., Baart, F., Donchyts, G., & Aarninkhof, S. (2018). The State of the World’s Beaches. Scientific Reports, 8(1), 6641. https://doi.org/10.1038/s41598-018-24630-6

Athanasiou, P., van Dongeren, A., Giardino, A., Vousdoukas, M., Gaytan-Aguilar, S., & Ranasinghe, R. (2019). Global distribution of nearshore slopes with implications for coastal retreat. Earth System Science Data, 11(4), 1515–1529. https://doi.org/10.5194/essd-11-1515-2019

Vousdoukas, M. I., Mentaschi, L., Voukouvalas, E., Verlaan, M., Jevrejeva, S., Jackson, L. P., & Feyen, L. (2018). Global probabilistic projections of extreme sea levels show intensification of coastal flood hazard. Nature Communications, 9(1), 2360. https://doi.org/10.1038/s41467-018-04692-w