This document is a readme of the files generated for the manuscript “Multi-decadal basal melt rates and structure of the Ross Ice Shelf, Antarctica using airborne ice penetrating radar” by Das et al., JGR, 2020.


ROSETTA-Ice Total Thickness:
	~ File Naming Convention: rs_2019_DICE_IceThickness.txt
	~ The ascii file contains thickness values form all three ROSETTA seasons and has three columns:
		latitude, longitude, and total ice thickness (m) from Deep ICE (DICE) Radar. 
	~ The thickness picks provided from the DICE radar has been cleaned for outliers in this derived product of the total ice thickness.
	

ROSETTA-Ice LMI Thickness:
	~ File Naming Convention:
		SIR_L_lines_Internal_LayerLMI_Thickness.txt
		SIR_T_lines_Internal_LayerLMI_Thickness.txt
	~ The ascii files contains thickness values form all three ROSETTA seasons and has three columns: 
		latitude, longitude, and LMI ice thickness (m) from Shallow Ice Radar (SIR).
	~ LMI Thicknesses derived from ROSETTA SIR data have been split into T-lines (tie lines) and L-lines (lateral lines) respectively.
	~ The thickness picks provided from the SIR radar has been extensively cleaned for outliers and any thickness >300m have been discarded. 

 
Basal Melt:
	~ File Naming Convention: BasalMelt_Das_JGR2020.txt
	~ The ascii file is the final basal melt rate calculation used in Figure 7 of Das et al. 2020 (JGR), and has three columns:
		Longitude, Latitude, and basal melt rates in m a^(-1).

Strain Induced Thickness Change - ELMER Model:
	~ File Naming Convention: strain_induced_thickness_change_ELMER_Model_Das_JGR2020.txt
	~ This ascii file is the final strain rate calculation using ELMER/Ice model, and has three columns:
		Latitude, Longitude, and strain-induced thickness change in m a^(-1).

Strain Induced Thickness Change - Satellite:
	~ File Naming Convention: strain_induced_thickness_change_satellite_Das_JGR_2020.txt
	~ This ascii file is the final strain rate calculation using satellite velocity from the MeASURES Project, and has three columns:
		Latitude, Longitude, and strain-induced thickness change in m a^(-1).

Error Analysis Basal Melt:
	~ File Naming Convention: ErrorAnalysis_BasalMelt_Das_JGR2020.txt
	~ This ascii file is the error estimates of basal melt used in Figure 8 of Das et al. 2020 (JGR), and has three columns:
		Latitude, Longitude, and errors in basal melt rates in m a^(-1).



For questions, please contact Indrani Das at indrani@ldeo.columbia.edu.