Shelf sea extent rasters (SLW140 2021)

DESCRIPTION:   Global paleoreconstruction of shelf sea extent for every 500 yr time period using the global bathymetric model (GEBCO 2021) and a state-of-the-art global spatiotemporal sea level curve. The global sea level curve was generated using the software SELEN4 (10.5281/zenodo.3520451) and raster DEMSRE3a (10.5281/zenodo.1637816).  MAPPED CATEGORIES:   0 = > 0 m BPSL (Below Past Sea Level)  1 = Between 0 and -140 m BPSL   MAPPED NA VALUES:   No Data = < -140 m BPSL   SPATIAL RESOLUTION:   The spatial resolution of the dataset is a factor 8 of the original GEBCO.   TEMPORAL RESOLUTION:   A reconstruction is made for every 500 years from 0 BP to 26000 BP.   The dataset is provided in two formats:   1. TILED IN ASCII (SLW_tiles.zip):   53 tiles of 10x10 degrees per folder each representing shallow water for a 500 yr time period.   Directory naming:  structure: //SLW..asc  example: 10/010-020/SLW.005.asc  description: Tile with shelf sea extent from 0 to 10 degrees latitude, and 10 to 20 degrees longitude, for 500 yr BP.   2. MOSAIC IN TIF (SLW_mosaic.zip):   53 global maps each presenting shallow water for a 500 yr time period.   File naming:  structure: SLW.tif  example: SLW005.tif  description: Global shelf sea extent map for 500 yr BP.