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In situ measurements of snow accumulation in the Amundsen Sea Embayment during 2016

  • Joanne S. Johnson (a1), John P. O’Donnell (a2) and Elizabeth R. Thomas (a1)


Measurements of snow accumulation are critical for reliable prediction of future ice mass loss and hence projections of sea level change. However, there are currently very few published in situ measurements of snow accumulation in the Pine Island–Thwaites glacier catchment of the Amundsen Sea Embayment, and none from low elevation sites west of 100.77° longitude. Here measurements of snow accumulation over an 11 month period in 2016 are reported for six sites in the Pine Island–Thwaites glacier catchment. The average accumulation rates of 0.10±0.01 to 1.26±0.22 m w.e. yr-1 are comparable with those derived from airborne radar for the period 1985–2009, suggesting very high rates of snowfall, particularly in the vicinity of the grounding line.


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Banta, J.R., McConnell, J.R., Frey, M.M., Bales, R.C. & Taylor, K. 2008. Spatial and temporal variability in snow accumulation at the West Antarctic Ice Sheet Divide over recent centuries. Journal of Geophysical Research - Atmospheres, 10.1029/2008JD010235.
Burgener, L., Rupper, S., Koenig, L., Forster, R., Christensen, W.F., Williams, J., Koutnik, M., Miège, C., Steig, E.J., Tingey, D., Keeler, D. & Riley, L. 2013. An observed negative trend in West Antarctic accumulation rates from 1975 to 2010: evidence from new observed and simulated records. Journal of Geophysical Research - Atmospheres, 10.1002/jgrd.50362.
DeConto, R.M. & Pollard, D. 2016. Contribution of Antarctica to past and future sea-level rise. Nature, 10.1038/nature17145.
Dee, D.P., Uppala, S.M., Simmons, A.J., Berrisford, P., Poli, P., Kobayashi, S., Andrae, U., Balmaseda, M.A., Balsamo, G., Bauer, P., Bechtold, P., Beljaars, A.C.M., van de Berg, L., Bidlot, J., Bormann, N., Delsol, C., Dragani, R., Fuentes, M., Geer, A.J., Haimberger, L., Healy, S.B., Hersbach, H., Holm, E.V., Isaksen, L., Kallberg, P., Kohler, M., Matricardi, M., McNally, A.P., Monge-Sanz, B.M., Morcrette, J.-J., Park, B.-K., Peubey, C., de Rosnay, P., Tavolato, C., Thepaut, J.-N. & Vitart, F. 2011. The ERA-Interim reanalysis: configuration and performance of the data assimilation system. Quarterly Journal of the Royal Meteorological Society, 137, 553597.
Jacobs, S.S., Jenkins, A., Giulivi, C.F. & Dutrieux, P. 2011. Stronger ocean circulation and increased melting under Pine Island Glacier ice shelf. Nature Geoscience, 10.1038/ngeo1188.
Joughin, I., Smith, B. & Medley, B. 2014. Marine ice sheet collapse potentially under way for the Thwaites Glacier basin, West Antarctica. Science, 10.1126/science.1249055.
Kaspari, S., Mayewski, P.D., Dixon, D.A., Spikes, V.B., Sneed, S.B., Handley, M.J. & Hamilton, G.S. 2004. Climate variability in West Antarctica derived from annual accumulation-rate records from ITASE firn/ice cores. Annals of Glaciology, 10.3189/172756404781814447.
Lenaerts, J.T.M., Ligtenberg, S.R.M., Medley, B., van de Berg, W.J., Konrad, H., Nicolas, J. P., van Wessem, J.-M., Trusel, L.D., Mulvaney, R., Tuckwell, R.J., Hogg, A.E. & Thomas, E.R. 2017. Climate and surface mass balance of coastal West Antarctica resolved by regional climate modelling. Annals of Glaciology, 10.1017/aog.2017.42.
Medley, B., Joughin, I., Das, S.B., Steig, E.J., Conway, H., Gogineni, S., Criscitiello, A.S., McConnell, J.R., Smith, B.E., van den Broeke, M.R., Lenaerts, J.T.M., Bromwich, D.H. & Nicolas, J.P. 2013. Airborne-radar and ice-core observations of annual snow accumulation over Thwaites Glacier, West Antarctica confirm the spatiotemporal variability of global and regional atmospheric models. Geophysical Research Letters, 10.1002/grl.50706.
Medley, B., Joughin, I., Smith, B.E., Das, S.B., Steig, E.J., Conway, H., Goginen, S., Lewis, C., Criscitiello, A.S., McConnell, J.R., van den Broeke, M.R., Lenaerts, J.T.M., Bromwich, D.H., Nicolas, J.P. & Leuschen, C. 2014. Constraining the recent mass balance of Pine Island and Thwaites glaciers, West Antarctica, with airborne observations of snow accumulation. Cryosphere, 10.5194/tc-8-1375-2014.
Morris, E.M., Mulvaney, R., Arthern, R.J., Davies, D., Gurney, R.J., Lambert, P., De Rydt, J., Smith, A.M., Tuckwell, R.J. & Winstrup, M. 2017. Snow densification and recent accumulation along the iSTAR traverse, Pine Island Glacier, Antarctica. Journal of Geophysical Research - Earth Surface, 10.1002/2017JF004357.
Rignot, E., Mouginot, J. & Scheuchl, B. 2011a. Ice flow of the Antarctic ice sheet. Science, 10.1126/science.1208336.
Rignot, E., Mouginot, J. & Scheuchl, B. 2011b. MEaSUREs InSAR-based Antarctica ice velocity map, version 1. Boulder, CO: NASA NSIDC Distributed Active Archive Center. Available at, accessed 12 September 2017.
Rignot, E., Mouginot, J. & Scheuchl, B. 2011c. Antarctic grounding line mapping from differential satellite radar interferometry. Geophysical Research Letters, 10.1029/2011GL047109.
Rignot, E., Mouginot, J., Morlighem, N., Seroussi, H. & Scheuchl, B. 2014. Widespread, rapid grounding line retreat of Pine Island, Thwaites, Smith, and Kohler glaciers, West Antarctica, from 1992 to 2011. Geophysical Research Letters, 10.1002/2014GL060140.
Ritz, C., Edwards, T.L., Durand, G., Payne, A.J., Peyaud, V. & Hindmarsh, R.C.A. 2015. Potential sea-level rise from Antarctic ice-sheet instability constrained by observations. Nature, 10.1038/nature16147.
Thoma, M., Jenkins, A., Holland, D. & Jacobs, S. 2008. Modelling Circumpolar Deep Water intrusions on the Amundsen Sea continental shelf, Antarctica. Geophysical Research Letters, 10.1029/2008GL034939.
Thomas, E.R. & Bracegirdle, T.J. 2015. Precipitation pathways for five new ice core sites in Ellsworth Land, West Antarctica. Climate Dynamics, 10.1007/s00382-014-2213-6.
Thomas, E.R., Hosking, J.S., Tuckwell, R.R., Warren, R.A. & Ludlow, E.C. 2015. Twentieth century increase in snowfall in coastal West Antarctica. Geophysical Research Letters, 10.1002/2015GL065750.
Thomas, E.R., van Wessem, J.M., Roberts, J., Isaksson, E., Schlosser, E., Fudge, T.J., Vallelonga, P., Medley, B., Lenaerts, J., Bertler, N., van den Broeke, M.R., Dixon, D.A., Frezzotti, M., Stenni, B., Curran, M. & Ekaykin, A.A. 2017. Regional Antarctic snow accumulation over the past 1000 years. Climate of the Past, 10.5194/cp-13-1491-2017.
Wang, Y.T., Thomas, E.R., Hou, S.G., Huai, B.J., Wu, S.Y., Sun, W.J, Qi, S.Z., Ding, M.H. & Zhang, Y.L. 2017. Snow accumulation variability over the West Antarctic Ice Sheet since 1900: a comparison of ice core records with ERA-20C reanalysis. Geophysical Research Letters, 10.1002/2017GL075135.


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In situ measurements of snow accumulation in the Amundsen Sea Embayment during 2016

  • Joanne S. Johnson (a1), John P. O’Donnell (a2) and Elizabeth R. Thomas (a1)


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