Historic coastline age raster (AGE 2021)
Global paleo drowning map indicating the most recent 500 yr time period a pixel was land. The reconstruction was done 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).
from 0 to 260 in bins of 5 (e.g., 0, 5, 10, 15, 20, ..., 260; each bin corresponds to 500 yr)
0 = 0 yr BP
5 = 500 yr BP
10 = 1000 yr BP
100 = 10000 yr BP
200 = 20000 yr BP
260 = 26000 yr BP
MAPPED NA VALUES:
No Data = pixel has always been Below (Past) Sea Level since 26000 BP.
The spatial resolution of the dataset is a factor 8 of the original GEBCO.
Temporal mapping resolution is 500 yr.
The dataset is provided in two formats:
1. TILED IN ASCII (AGE_tiles.zip):
tiles of 10x10 degrees each representing the drowning age.
description: Tile with drowning age from 0 to 10 degrees latitude, and 10 to 20 degrees longitude.
2. MOSAIC IN TIF (AGE_mosaic.tif):
Global drowning map.
description: Global drowning map