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This dataset provides 14 years (2003-2016) of Antarctic ice mass change from the joint estimation of satellite gravimetry (GRACE) and multi-mission satellite altimetry.

The dataset is classified as four types of ice mass changes according to the corrected GIA model. The GIA models used here are as follows:

1) Caron, L., E. R. Ivines (2019),  A baseline Antarctic GIA correction for space gravimetry, Earth and Planetary Science Letters, 531(1), https://doi.org/10.1016/j.epsl.2019.115957

2) Peltier, W.R., D.F Argus, R. Drummond (2018), Comment on "An Assessment of the ICE-6G_C (VM5a) Glacial Isostatic Adjustment Model" by Purcell et al. J. Geophys. Res. Solid Earth, 123, 2019-2018, https://doi:10.1002/2016JB013844. 

3) Purcell, A., P. Tregoning, A. Dehecq (2016), An assessment of the ICE6G_C(VM5a) glacial isostatic adjustment model, J. Geophys. Res. Solid Earth, 121 (5), https://doi.org/10.1002/2015JB012742

4) Whitehouse, P. L., M. J. Bentley, G. A. Milne, M. A. King, I. D. Thomas (2012), A new glacial isostatic adjustment model for Antarctica: calibrated and tested using observations of relative sea-level change and present-day uplift rates, Geophysical Journal International, 190(3), 1464–1482, https://doi.org/10.1111/j.1365-246X.2012.05557.x

The dataset also provides MATLAB function (clderr.m) to calculate systematic (due to different GIA models, unit = Gton/yr) and random (obtained by Monte-Carlo simulations, unit = Gton) errors in a target basin.

To estimate errors, users should prepare the coordinate data of basin boundaries (in polar-sterographic x,y coordinate) as 1-dimensional matrix. Also, all datasets should be located in the same directory.

The usage of the function is as follows:

[err_r,err_s]=clderr(bx,by);

in which bx and by are basin boundaries (unit:km). err_r and err_s are random and systematic error to be estimated, respectively.

Overview

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- Data Format : MATLAB binary data container format (.mat)

- Coordinate system : Polar Stereographic South (Standard longitude = 0, standard latitude = -71)

- Spatial resolution : 27km (nominal)

- Temporal resolution : monthly

- Temporal coverage : Jan 2003 - Aug 2016

- Unit : the mili-meter water equivalent

- Citation : Kim, B. -H., K. -W. Seo*, C. -K. Lee, J. -S. Kim, j. Chen and C. R. Wilson, 2022, Antarctic ice mass change (2003-2016) jointly estimated by satellite gravimetry and altimetry, J. Geophys. Res. Solid Earth, https://doi.org/10.1029/2021JB023297

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If you have any questions, please contact seokiweon@snu.ac.kr