A data source name to the GEBCO elevation 'COG' GeoTIFF.
gebco(vsi = TRUE)
gebco21(vsi = TRUE)
gebco23_bedrock(vsi = TRUE)
gebco23(vsi = TRUE)
gebco22(vsi = TRUE)
gebco19(vsi = TRUE)include the 'vsicurl' prefix (TRUE is default)
character string, URL to online GeoTIFF
GEBCO 2023 and 2022 is created and hosted by Philippe Massicotte.
GEBCO 2019 and 2021 created and hosted by the Australian Antarctic Division.
See note about which forms of the bedrock vs ice surface are available. Generally we use the ice surface form, because that is what encountered while navigating the surface of the Earth. But, the bedrock is of course also of interest.
please note that gebco21(), gebco19() return the ice surface form, while gebco22() returns the bedrock form. With gebco23() and gebco23_bedrock() these are now both avaiable, again thanks to Philippe Massicotte.
gebco()
#> [1] "/vsicurl/https://gebco2023.s3.valeria.science/gebco_2023_land_cog.tif"