DOI: 10.5281/zenodo.13761679
title: Dataset for the paper "Ephemeral grounding on the Pine Island Ice Shelf, West Antarctica, from 2014 to 2023"

description: This code and related datasets are used for generating the figures for the paper "Ephemeral grounding on the Pine Island Ice Shelf, West Antarctica, from 2014 to 2023". Includes corrected REMA DSM stripes at the central ice shelf region of Pine Island Ice Shelf, the double differential vertical displacement results from 2014 to 2023 which cazlculated from the offset tracking results output from GAMMA software. Other dataset for calculating basal melting and other analysis are also included in the ZIP file. Each MATLAB codes in MATLAB_function.zip includes the discriptions that guide the user how to used it and how to find the dataset that used for processing. Some sample files are provided in data_and_results.zip that can let user test the code easily.  These data can be accessed after the paper is accepted.

 
description: Description of the data and file structure

The MATLAB codes and related datasets are used for generating the figures for the paper "Ephemeral grounding on the Pine Island Ice Shelf, West Antarctica, from 2014 to 2023" submitted to JGR Earth Surface.

Files and variables

File: Main_function.zipDescription: Include MATLAB scripts and functions.?Each script include discriptions that guide the user how to used it and how to find the dataset that used for processing.

MATLAB Main Scripts: Include the whole steps to process the?data, output figures, and output videos.



Script_1_DROT_calc_plot.m

Script_2_Ice_velocity_process_flow.m

Script_3_Extraction_results.m

Script_4_Plot_Figures_and_output_avi.m


MATLAB functions: six Files that includes MATLAB functions that support the main script:



1_DROT_code: Include MATLAB functions related to convert range offset results output from GAMMA to differential vertical displacement.

2_Ice_velocity_code: Include MATLAB functions related to ice velocity post-processing, includes remove outliers, filter, correct for atmospheric and tidal effect, inverse weited averaged, and error estimate.

3_Extract_data_from_2D_result: Include MATLAB functions that used for extract profiles from 2D data.

4_Basal_melting_experiment: Include MATLAB functions related to ice thickness and basal melt rate calculations.

5_Movies_and_Series_Figures: Include MATLAB functions related to generate Movie S1.

6_Figure_plotting_code:Include MATLAB functions related to Figures in the paper and support information.

7_REMA_DEM_error_estimation: Include MATLAB functions related to error estimation for corrected REMA DEMs.


File: data_and_result.zipDescription: Include directories that store the results output from MATLAB. user only neeed to modify the path in MATLAB script to their own path.



1_origin : Sample data ("PS-20180323-20180329", “PS-20180329-20180404”, “PS-20180404-20180410”) output from GAMMA software in Geotiff format that can be used to calculate DROT and velocity. Includes displacment, theta, phi, and ccp.?

2_maskccpN: Remove outliers by ccp < 0.05 and change displacement to velocity (m/day).

3_rockpoint: Extract velocities at non-moving region

4_constant_detrend: removed orbit error

5_Tidal_correction: remove atmospheric and tidal induced error

6_vx_vy_v: trasform velocities from va/vr to vx/vy

7_vx_vy_v_aggregate_and_error_estimate: inverse weighted average of three ice velocity maps and calculate the error maps

8_compare: store the results before and after tidal correction and aggregation.

9_Block_result: times series results that extrac from 2D data.

10_MATLAB_output_png_result: Times series Figures

11_DEM: corrected and uncorrected REMA DEM strips, related dataset used for calculated basal melting

12_DROT: Differential Range Offset Tracking re4sults

13_Figures: Figures for paper

shp: grounding line, rock region, ice front, and other shape files.


File: PIG_ice_front_1947_2022.zipDescription:**Includes Ice front positions shape files from 1947 to 2022, which used for plotting figure.1 in the paper.

File: double_diffrential_vertical_displacement_PIG_2014_2023.zipDescription:**Includes double diffrential vertical displacement results in Geotiff format.

Data was derived from the following sources:Those links can be found in MATLAB scripts or in the paper "**Open Research" **section.