On August 14, 2013, the MCoRDS L3 Gridded Ice Thickness, Surface, and Bottom data were replaced by Version 2 -V2 grid size is 500 m x 500 m. V1 coarse (3 x 3 km) and dense (1.5 x 1.5 km) grids are not included in V2 -V2 contains separate grid .txt files for Surface, Thickness, and Bottom -V1 1995_2011_Petermann_Composite data are removed -V1 TIF files are removed; MAT files added in V2 -ASCII text grid file is changed from CSV in V1 to .txt in V2 -V1 crossover_analysis directory is removed; errors directory is added with .mat and errors.txt files