The response of the Greenland Ice Sheet (GIS) to changes in temperature during the twentieth century remains contentious1, largely owing to difficulties in estimating the spatial and temporal distribution of ice mass changes before 1992, when Greenland-wide observations first became available2. The only previous estimates of change during the twentieth century are based on empirical modelling3,4,5 and energy balance modelling6,7. Consequently, no observation-based estimates of the contribution from the GIS to the global-mean sea level budget before 1990 are included in the Fifth Assessment Report of the Intergovernmental Panel on Climate Change8. Here we calculate spatial ice mass loss around the entire GIS from 1900 to the present using aerial imagery from the 1980s. This allows accurate high-resolution mapping of geomorphic features related to the maximum extent of the GIS during the Little Ice Age9 at the end of the nineteenth century. We estimate the total ice mass loss and its spatial distribution for three periods: 1900–1983 (75.1 ± 29.4 gigatonnes per year), 1983–2003 (73.8 ± 40.5 gigatonnes per year), and 2003–2010 (186.4 ± 18.9 gigatonnes per year). Furthermore, using two surface mass balance models10,11 we partition the mass balance into a term for surface mass balance (that is, total precipitation minus total sublimation minus runoff) and a dynamic term. We find that many areas currently undergoing change are identical to those that experienced considerable thinning throughout the twentieth century. We also reveal that the surface mass balance term shows a considerable decrease since 2003, whereas the dynamic term is constant over the past 110 years. Overall, our observation-based findings show that during the twentieth century the GIS contributed at least 25.0 ± 9.4 millimetres of global-mean sea level rise. Our result will help to close the twentieth-century sea level budget, which remains crucial for evaluating the reliability of models used to predict global sea level rise1,8.
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Gregory, J. M. et al. Twentieth-century global-mean sea level rise: is the whole greater than the sum of the parts? J. Clim. 26, 4476–4499 (2013)
Khan, S. A. et al. Greenland ice sheet mass balance: a review. Rep. Prog. Phys. 78, 046801 (2015)
Rignot, E., Box, J. E., Burgess, E. & Hanna, E. Mass balance of the Greenland ice sheet from 1958 to 2007. Geophys. Res. Lett. 35, L20502 (2008)
Yanga, L. A southern Greenland ice sheet glacier discharge reconstruction: 1958–2007. Phys. Procedia 22, 292–298 (2011)
Box, J. E. & Colgan, W. Greenland ice sheet mass balance reconstruction. Part III: marine ice loss and total mass balance (1840–2010). J. Clim. 26, 6990–7002 (2013)
van de Wal, R. & Oerlemans, J. An energy balance model for the Greenland ice sheet. Global Planet. Change 9, 115–131 (1994)
Zuo, Z. & Oerlemans, J. Contribution of glacier melt to sea-level rise since AD 1865: a regionally differentiated calculation. Clim. Dyn. 13, 835–845 (1997)
Church, J. A. et al. in Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (eds Stocker, T. F. et al. .) 1137–1216 (Cambridge Univ. Press, 2013)
Khan, S. A. et al. Glacier dynamics at Helheim and Kangerdlugssuaq glaciers, southeast Greenland, since the Little Ice Age. Cryosphere 8, 1497–1507 (2014)
Box, J. E. Greenland ice sheet mass balance reconstruction. Part II: surface mass balance (1840–2010)*. J. Clim. 26, 6974–6989 (2013)
van Angelen, J. H., van den Broeke, M. R. & van de Berg, W. J. Momentum budget of the atmospheric boundary layer over the Greenland ice sheet and its surrounding seas. J. Geophys. Res. 116, D10101 (2011)
Csatho, B. M., Schenk, T., van der Veen, C. J. & Krabill, W. B. Intermittent thinning of Jakobshavn Isbræ, West Greenland, since the Little Ice Age. J. Glaciol. 54, 131–144 (2008)
Lea, J. M. et al. Terminus-driven retreat of a major southwest Greenland tidewater glacier during the early 19th century: Insights from glacier reconstructions and numerical modelling. J. Glaciol. 60, 333–344 (2014)
Bjørk, A. A. et al. An aerial view of 80 years of climate-related glacier fluctuations in southeast Greenland. Nat. Geosci. 5, 427–432 (2012)
Higgins, A. K. North Greenland glacier velocities and calf ice production. Polarforschung 60, 1–23 (1990)
Colgan, W. et al. Greenland high-elevation mass balance: inference and implication of reference period (1961–90) imbalance. Ann. Glaciol. 56, 105–117 (2015)
Shepherd, A. et al. A reconciled estimate of ice sheet mass balance. Science 338, 1183–1189 (2012)
Khan, S. A. et al. Sustained mass loss of the northeast Greenland ice sheet triggered by regional warming. Nature Clim. Change 4, 292–299 (2014)
Rignot, E., Velicogna, I., van den Broeke, M. R., Monaghan, A. & Lenaerts, J. T. M. Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise. Geophys. Res. Lett. 38, L05503 (2011)
van den Broeke, M. et al. Partitioning recent Greenland mass loss. Science 326, 984–986 (2009)
Enderlin, E. M. et al. An improved mass budget for the Greenland ice sheet. Geophys. Res. Lett. 41, 866–872 (2014)
Kjær, K. H. et al. Aerial photographs reveal late-20th-century dynamic ice loss in northwestern Greenland. Science 337, 569–573 (2012)
Howat, I. M., Joughin, I. R. & Scambos, T. A. Rapid changes in ice discharge from Greenland outlet glaciers. Science 315, 1559–1561 (2007)
Bamber, J., van den Broeke, M. R., Ettema, J., Lenaerts, J. & Rignot, E. Recent large increases in freshwater fluxes from Greenland into the North Atlantic. Geophys. Res. Lett. 39, L19501 (2012)
Box, J. E., Yang, L., Bromwich, D. H. & Bai, L.-S. Greenland Ice Sheet surface air temperature variability: 1840–2007*. J. Clim. 22, 4029–4049 (2009)
Hay, C. C., Morrow, E., Kopp, R. E. & Mitrovica, J. X. Probabilistic reanalysis of twentieth-century sea-level rise. Nature 517, 481–484 (2015)
Jevrejeva, S., Moore, J. C., Grinsted, A., Matthews, P. & Spada, G. Trends and acceleration in global and regional sea levels since 1807. Global Planet. Change 113, 11–22 (2014)
Church, J. A. & White, N. J. Sea-level rise from the late 19th to the early 21st century. Surv. Geophys. 32, 585–602 (2011)
Kobashi, T. et al. On the origin of multidecadal to centennial Greenland temperature anomalies over the past 800 yr. Clim. Past 9, 583–596 (2013)
Weidick, A., Bennike, O., Citterio, M. & Nørgaard-Pedersen, N. Neoglacial and historical glacier changes around Kangersuneq fjord in southern West Greenland. Geol. Surv. Denmark Greenland Bull. 27, 1–68, http://www.geus.dk/publications/bull/nr27/index-uk.htm (2012)
Glasser, N. F., Harrison, S., Jansson, K. N., Anderson, K. & Cowley, A. Global sea-level contribution from the Patagonian Icefields since the Little Ice Age maximum. Nature Geosci . 4, 303–307 (2011)
Carrivick, J. L., Davies, B. J., Glasser, N. F., Nývlt, D. & Hambrey, M. J. Late-Holocene changes in character and behaviour of land-terminating glaciers on James Ross Island, Antarctica. J. Glaciol. 58, 1176–1190 (2012)
Cuffey, K. M. & Paterson, W. S. B. The Physics of Glaciers (Elsevier, 2010)
Rignot, E. & Mouginot, J. Ice flow in Greenland for the International Polar Year 2008–2009. Geophys. Res. Lett. 39, L11501 (2012)
Krabill, W. B . IceBridge ATM L2 Icessn Elevation, Slope, and Roughness, [2003-2010] data set http://nsidc.org/data/blatm2 (National Snow and Ice Data Center, 2014)
Zwally, H. J. et al. GLAS/ICESat L2 Antarctic and Greenland Ice Sheet Altimetry Data V031 data set https://nsidc.org/data/icesat/data.html (National Snow and Ice Data Center, 2011)
National Snow and Ice Data Center. ICESat: Description of Data Releases data set http://nsidc.org/data/icesat/data_releases.html (2011)
Howat, I. M., Smith, B. E., Joughin, I. R. & Scambos, T. A. Rates of southeast Greenland ice volume loss from combined ICESat and ASTER observations. Geophys. Res. Lett. 35, L17505 (2008)
Pritchard, H. D., Arthern, R. J., Vaughan, D. G. & Edwards, L. A. Extensive dynamic thinning on the margins of the Greenland and Antarctic ice sheets. Nature 461, 971–975 (2009)
Blair, B. & Hofton, M. IceBridge LVIS L2 Geolocated Ground Elevation and Return Energy Quartiles,  data set. http://nsidc.org/data/ilvis2.html (National Snow and Ice Data Center, 2010)
Ewert, H., Groh, A. & Dietrich, R. Volume and mass changes of the Greenland ice sheet inferred from ICESat and GRACE. J. Geodyn. 59-60, 111–123 (2012)
Kjeldsen, K. K. et al. Improved ice loss estimate of the northwestern Greenland ice sheet. J. Geophys. Res. Solid Earth 118, 698–708 (2013)
Smith, B. E., Fricker, H. A., Joughin, I. R. & Tulaczyk, S. An inventory of active subglacial lakes in Antarctica detected by ICESat (2003–2008). J. Glaciol. 55, 573–595 (2009)
Rignot, E. & Kanagaratnam, P. Changes in the velocity structure of the Greenland Ice Sheet. Science 311, 986–990 (2006)
Arendt, A. et al. Randolph Glacier Inventory—A Dataset of Global Glacier Outlines Version 3.2, http://www.glims.org/RGI/ (Global Land Ice Measurements from Space, 2013)
Danish Geodata Agency. Ground control for 1:150,000 scale aerials, Greenland http://gst.dk/emner/landkort-topografi/groenland/ground-control-greenland/ (GST, 2013)
Nuth, C. & Kääb, A. Co-registration and bias corrections of satellite elevation data sets for quantifying glacier thickness change. Cryosphere 5, 271–290 (2011)
Kääb, A. Remote Sensing of Mountain Glaciers and Permafrost Creep. Schriftenreihe Physische Geographie (Univ. Zürich, Department of Geography, 2005)
Wang, W., Li, J. & Zwally, H. J. Dynamic inland propagation of thinning due to ice loss at the margins of the Greenland ice sheet. J. Glaciol. 58, 734–740 (2012)
Krabill, W. B. et al. Greenland Ice Sheet: increased coastal thinning. Geophys. Res. Lett. 31, L24402 (2004)
Sasgen, I. et al. Timing and origin of recent regional ice-mass loss in Greenland. Earth Planet. Sci. Lett. 333–334, 293–303 (2012)
Hurkmans, R. T. W. L. et al. Time-evolving mass loss of the Greenland Ice Sheet from satellite altimetry. Cryosphere 8, 1725–1740 (2014)
Lecavalier, B. S. et al. Revised estimates of Greenland ice sheet thinning histories based on ice-core records Greenland. Quat. Sci. Rev. 63, 73–82 (2013)
Pfeffer, W. T., Meier, M. F. & Illangasekare, T. H. Retention of Greenland runoff by refreezing: implications for projected future sea level change. J. Geophys. Res. 96, 22117–22124 (1991)
Box, J. E. et al. Greenland ice sheet mass balance reconstruction. Part I: Net snow accumulation (1600-2009). J. Clim. 26, 3919–3934 (2013)
Andersen, M. L. et al. Basin-scale partitioning of Greenland ice sheet mass balance components (2007–2011). Earth Planet. Sci. Lett. 409, 89–95 (2015)
Weidick, A. Historical fluctuations of calving glaciers in South and West Greenland. Rapp. Grønlands Geol. Unders . 161, 73–79 (1994)
Weidick, B. A. Neoglacial glaciations around Hans Tausen Iskappe, Peary Land, North Greenland. Medd. Gronl. Geosci . 39, 5–26 (2001)
This study would not have been possible without the aid of The Danish Geodata Agency (GST), who gave us access to their historical aerial photographs. This work is a part of the X_Centuries project funded by the Danish Council for Independent Research (FNU) (grant number DFF-0602-02526B) and the Centre for GeoGenetics supported by the Danish National Research Foundation (DNRF94). K.K.K. acknowledges support from the Danish Council for Independent Research (FNU) and the Sapere Aude: DFF-Research Talent programme (grant number DFF-4090-00151). J.E.B., K.H.K. and N.K.L. acknowledge support by the GeoCenter Denmark (“Multi-millennial ice volume changes of the Greenland ice sheet”). S.A.K. acknowledges supports from the Carlsberg Foundation (grant number CF14-0145) and the Danish Council for Independent Research (FNU) (grant number DFF-4181-00126). M.v.d.B. acknowledges support from the Netherlands Polar Program of the Netherlands Organization of Scientific Research (NWO). C.N. acknowledges support by the European Research Council (EUFP7/ERC grant number 320816). We thank A. J. Long, S. A. Woodroffe, B. M. Vinther, and R. Hurkmans for contribution during the early phase of this study.
The authors declare no competing financial interests.
Extended data figures and tables
a, Three simulated ice surface profiles based on Glen’s flow law, each representing time steps t1 (blue dots), t2 (red dots), and t3 (black dots). b, The same profiles as in a supplemented with the predicted profile hpre_t3 (grey line) derived using an S value of 2.2. The figure shows agreement between the profile ht3 and hpre_t3; hence, if we know the elevation change during one period (for example, t1 and t2), then it is possible to obtain the elevation change during another period (for example, t1 and t3) by multiplying with a constant S. c, The elevation changes between t1 and t2 (dht1t2, blue line) and between t1 and t3 (dht1t3, brown line). The black dots are the elevation changes between t1 and the predicted surface profile hpre_t3 derived using the elevation change between t1 and t2 and an S value of 2.2. The predicted difference (dht1t3_pre) between t1 and t3 is derived from dht1t2 and a constant, implying that the surface profile at t1 is part of both the input and of the output. d, dht1t2 (blue line), the elevation changes between t3 and t4 (dht3t4, dark green line), and the predicted dht3t4 (dht3t4_pre, black dots), which is derived using dht1t2 and an S value of 1.2; thus none of the ice surface profiles are part of both the input and output. If both dht1t2 and dht3t4 are known then S can be derived as the ratio between the observations. e, The uncertainty between the profile ht3 and hpre_t3 using a constant S. Generally the differences are small, though they increase near the margin. f, The elevation change between two time steps as a function of elevation. Changes are largest at lower elevation and become close to 0 at h > 2,500 m.
a, Elevation profiles of Kangerlussuaq Glacier in southeast Greenland from the 1981 DEM (grey line), 2003 ATM data (red line), and the predicted surface profile (blue line) in 2003, derived using the scaling approach based on local scale values and the 2003–2010 elevation changes (dhsolid). (For a more complete description of the approach using observations see Methods section ‘LIAmax to 1978–87 mass balance’). b, The elevation change rate between the observed 2003 surface profile (red) and the predicted 2003 surface profile (blue) relative to the 1981 DEM. The blue vertical lines denote uncertainty estimates that include an uncertainty related to the scaling approach, an error related to observed changes during 2003–2010, and an uncertainty related to the scaling of point-based observations. The red vertical lines denote an uncertainty associated with the observed elevation changes during 1981–2003 and includes combined errors of the measured height derived from stereo photogrammetric DEM and 2003 ATM data. c, A 1981 orthophoto of Kangerlussuaq Glacier with 2003 ATM data (red dots) and the May 2003 glacier front (black line). d–f and g–i illustrate the same as a–c for Helheim Glacier and Jakobshavn Isbræ, respectively. However, for Jakobshavn Isbræ the DEM and orthophoto is from 1985. Note the different scales for each of the glaciers. Comparing the elevation change rates derived from the scaling approach and those directly from the observations, we find good agreement as the error bars overlap. Thus, we regard the illustrated comparison as a validation of our method of deriving ice-sheet-wide mass balance estimates.
Calculation basins modified from ref. 44 to include slower-moving areas of the ice sheet. Note that three areas on the southeast coast have been omitted due to an insufficient number of LIA to 1978–87 data points caused by extensive snow cover on the vertical images. The total ice mask covers 1,647,907 km2. The additional areas included in the ice mask used by ref. 18 are shown in dark grey and in total the ice mask covers 1,739,564 km2.
a, Type 1 points are placed at the trimline or lateral moraine marking the LIAmax position and at the 1978–87 ice surface perpendicular to the flow direction, and as we assume that the cross-section profile of the glacier is the same during the LIAmax and 1978–87 then the vertical difference dh is the thinning at this location. This approach is the same as used by ref. 9. b, For Type 2 points we assume that the longitudinal shape of the glacier is the same during the LIAmax as in 1978–87. Points are placed at the LIAmax margin and at the 1978–87 margin, and assuming a longitudinal profile that does not change over time, the distance dL is used to find the vertical difference between the 1978–87 point and a point on the glacier at a distance of dL following the same flowline. Points for glaciers receding on steep slopes have been discarded.
a, Distribution of the two point types used to determine thinning between LIAmax and 1978–87. b, From the type 1 and type 2 points, net elevation change dhLIA is measured based on 3,003 point measurements from the LIAmax to 1978–87. Of the 3,003 pairs—that is, 6,006 point measurements—2,476 are measured as type 1 and 527 are type 2. The majority of the type 2 points are found along the land-terminating and slower-moving parts of the ice sheet, whereas type 1 points are found in valleys through which the ice flows and on nunataks. dhLIA values range between zero and −448 m (a negative value implies thinning). The largest dhLIA values are found along the major marine-outlet glaciers along the northwest and southeast coast and along the rim of the Qassimiut lobe (QL), while in contrast the lower dhLIA values are found along the slower-moving margins of the typically land-terminating ice sheet. In some areas around the ice sheet no trimlines are visible and/or the ice margin is in contact with the LIA moraines. Analysis of glacier front positions for outlet glaciers in the north, central west, southwest, and south using historical aerial photographs from the 1930s and onwards15,57,58 suggest that a few outlet glaciers, primarily land-terminating, have been stable or advanced since the LIA. In the northwest, central west, and southwest snow cover on the 1978–87 vertical aerial images is generally limited, which eases the distinction between freshly eroded bedrock, newly deposited glacial sediment, and non-eroded vegetated terrain surfaces. This supports the notion that if no trimline is visible on the photographs, then the ice margin is at an advanced and stable stage. Hence, the dhLIA and dLLIA values for points are zero. An example of a glacier that has advanced during the twentieth century is the Saqqap Sermia (SS)57 in the Nuup Kangerlua (Godthåbsfjord) complex in southwest Greenland. Here no trimlines are visible along the valley and the boundary between ice and vegetation cover is only interrupted by small meltwater channels, and at the glacier front no end moraines are visible on the meltwater plain. In the present setup we are not able to assign any post-LIA mass gain; however, as only a limited number of outlet glaciers have advanced and exceeded the LIA front position during the twentieth century we regard this mass gain as negligible relative to the ice-sheet-wide mass loss.
a–c, Histograms of the horizontal (a) and vertical (b) co-registration displacements for each 50 km × 50 km grid cell show that the aero-photogrammetric DEM compilation is generally accurate to within 10 m horizontally and 6 m vertically with a precision greater than 4 m (1σ confidence level) (c). d–f, The horizontal (d) and vertical (e) components of the co-registration vectors between 50 km × 50 km sections of the aero-photogrammetric DEM compilation and ICESat laser altimetry are plotted with the root-mean-square error of stable terrain differences after adjusting for the three-dimensional mis-registration (f).
Ice discharge estimates and associated errors (vertical bars) from ref. 24 (black), ref. 3 (blue), ref. 21 (red), and ref. 56 (grey). We note that the used discharge estimates of ref. 21 are 15 Gt yr−1 greater than those of ref. 56, 30 Gt yr−1 less than those of ref. 3, and 110 Gt yr−1 less than those of ref. 24. Such discrepancies are attributed to differences in data availability and assumptions used for filling gaps or the method used to correct for SMB between the inland flux gates and the grounding lines21.
Extended Data Figure 8 Temporal variability of the mass balance expressed as cumulative eustatic sea level rise.
Reconstructed temporal mass balance during the period 1840–2012 derived using revised SMB estimates from ref. 10 and modelled ice discharge, calculated as a function of six-year average runoff. The uncertainty is assessed from a Monte Carlo simulation using 4,000 samples for each year.
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Kjeldsen, K., Korsgaard, N., Bjørk, A. et al. Spatial and temporal distribution of mass loss from the Greenland Ice Sheet since AD 1900. Nature 528, 396–400 (2015). https://doi.org/10.1038/nature16183
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