Science & Data

The data consists of a single reconciled estimate of ice sheet mass balance covering the period 1st July 1971 to 31st December 2023 for the Greenland Ice Sheet and the period 1st January 1979 to 31st December 2023 for the Antarctic Ice Sheet (in its entirety and split into West Antarctica, East Antarctica and the Antarctic Peninsula). Two CSV files are provided for each ice sheet region, one with the data provided in Gigatons (Gt) and one with the data provided in equivalent sea level contribution in millimetres (mm) (assuming that 360 Gt of ice lost is equivalent to 1?mm sea level rise), for a total of 10 files. These files contain both annual rates and cumulative anomalies in surface mass balance, ice dynamics, and total mass change with their corresponding uncertainties

This dataset contains rates of mass change and cumulative mass change and their associated uncertainty for the Antarctic Ice Sheet (in its entirety and split into West Antarctica, East Antarctica and the Antarctic Peninsula), the Greenland Ice Sheet, and their sum between 1992 and 2020. The data are reconciled estimates of mass balance from three independent satellite-based techniques: altimetry, gravimetry and input-output method.

This spreadsheet contains the IMBIE-2019 datasets for Greenland, which includes data on the annual rate of change and cumulative change in Greenland’s ice sheet mass, its surface mass balance and ice discharge anomalies, and their estimated uncertainty. The data are expressed in units of rate of mass change (Gigatons per year – sheet 1, columns B, C, F, G, J and K) mass (Gigatons – sheet 1, columns D, E, H, I, L and M) and in units of equivalent mean global sea level rise (millimetres per year – sheet 2, columns B, C, F, G, J and K, and millimetres – sheet 2, columns D, E, H, I, L and M).

This spreadsheet contains the IMBIE-2018 datasets for Antarctica (worksheet 1), Antarctic Peninsula (worksheet 2), East Antarctica (worksheet 3) and West Antarctica (worksheet 4). Each worksheet includes data on monthly cumulative ice sheet mass changes and their estimated uncertainty. The data are expressed in units of mass (Gigatons – columns B and C) and in units of equivalent mean global sea level rise (millimetres – columns D and E).

This spreadsheet contains the IMBIE-2012 datasets for Antarctica (worksheet 1) and Greenland (worksheet 2). Each worksheet includes data on monthly cumulative ice sheet mass changes and their estimated uncertainty. The data are expressed in units of mass (Gigatons – columns B and C) and in units of equivalent mean global sea level rise (millimetres – columns D and E)

IMBIE data processor source code