DOI: 10.5061/dryad.f7m0cfz9j
title: Data from: Emergence of Antarctic mineral resources in a warming world

description: This dataset includes ice-free land changed projected in Antartica for the
 low, moderate, and high ice melt scenarios described in Lucas et al.
 (2026). Triangular grids are provided, covering both positive
 (emerged) and negative (lost) land changes occurring at five selected
 times (2100, 2150, 2200, 2250, 2300) relative to the reference at 2015.
 These grids include the total (signed) change and the (signed) fraction of
 ice-free land change resulting from sea level change only. 
description: # Data from: Emergence of Antarctic mineral resources in a warming world
 Dataset DOI:
 [10.5061/dryad.f7m0cfz9j](https://doi.org/10.5061/dryad.f7m0cfz9j) ##
 Description of the data and file structure The three tar archives -
 Lmelt.tar, Mmelt.tar, and Hmelt.tar - include ice-free land computed in
 Antarctica for the low, moderate, and high ice melt scenarios described in
 Lucas et al. (2026). Triangular grids are provided, covering both positive
 (emerged) and negative (lost) land changes occurring at five selected
 times (2100, 2150, 2200, 2250, 2300) relative to the reference at 2015.
 These grids include the total (signed) change and the (signed) fraction of
 ice-free land change resulting from sea level change only. 
 
 There are 20 grids in each folder, saved in three files (thus, 60 items
 in each folder): {*xyz_xx, *ll_xx, *tri_xx}, where: \* = {L, M, H} for
 low, moderate and high melt, respectively xx = [01, ..., 20] file number
 to be detailed below xyz - coordinate portion, staring with the number of
 points (nn) and following by Cartesian (X,Y,Z) coordinates (three per
 row). The origin of that system is at the center of Earth with the Z-axis
 pointing to the NP and the X-axis pointing to (0 Lat, 0 Lon) ll - As
 above, but the XYZ coordinates are converted to (Lat, Lon) so there are
 two columns of data after the row dimension (nn) in the first line. The
 angles are in degrees, ranging Lat = [-90, 90], Lon = [0, 360]. tri -
 connectivity list: number of triangular elements (nt) in the first line
 following by triplets of nodal numbers [1 ... nn] making the respective
 triangles [1 ... nt]. 
 
 Note that: (1) on a spherical surface, the XYZ and Lat-Lon coordinate
 representations are equivalent, so use whatever is convenient, paired with
 the connections to uniquely describe the grid; (2) the triangulated domain
 is (highly) multiply-connected, so there may be disjoined clusters made of
 a couple of triangles 
 
 File numbering [01, 20] reflects the following: \[01, 02, 03, 04, 05]
 total positive land changes \[06, 07, 08, 09, 10] total negative land
 changes \[11, 12, 13, 14, 15] positive land changes due to sea level
 change \[16, 17, 18, 19, 20] negative land changes due to sea level change
 where column 1-5 correspond to 2100, 2150, 2200, 2250, and 2300,
 respectively. 
 
 For example, the data corresponding to the total emerged (positive) land
 in 2250 for the moderate melt case is in {Mxyz_04, Mll_04, Mtri_04}, while
 the data corresponding to land loss due to sea level change in 2300 for
 the high melt case is in {Hxyz_20, Hll_20, Htri_20}. To reproduce the data
 reported in the Extended Data Table 1 in the main text (the total emerged
 land and that resulting from sea level change alone) sum up the areas of
 the respective triangles in [01 ... 05] and [11 ... 15]. We computed the
 areas neglecting the curvature due to the small size of ~ 1 km. We also
 include sea level output for the high, moderate, and low ice melt
 scenarios on the 4 km resolution surface grid in Antarctica for 2100,
 2150, 2200, 2250, and 2300. This output can be found in SL_highMelt.tar,
 SL_moderateMelt.tar, and SL_lowMelt.tar. Sea level output is in a single
 column (in meters), and the corresponding 4 km resolution surface grid
 "surf_a4km" is found in each directory. The surf_a4km_Latlon.dat
 file found in each directory includes the latitude and longitude of the
 grid onto which the sea level output is interpolated. 
 
 ### Files and variables #### File: Hmelt.tar **Description:** Ice-free
 land emergence data files associated with the high ice melt scenario. 
 #### File: Mmelt.tar **Description:** Ice-free land emergence data files
 associated with the moderate ice melt scenario.  #### File: Lmelt.tar
 **Description:** Ice-free land emergence data files associated with the
 low ice melt scenario.  #### File: plot_land_emergence.ipynb
 **Description:** Script showing example of how data files can be plotted
 in Python.  #### File: SL_highMelt.tar **Description:** Sea level output
 for high ice melt scenario. #### File: SL_moderateMelt.tar
 **Description:** Sea level output for the moderate ice melt scenario. 
 #### File: SL_lowMelt.tar **Description:** Sea level output for the low
 ice melt scenario.