Current Ice Loss in Small Glacier Systems of the Arctic Islands (Iceland, Svalbard, and the Russian High Arctic) from Satellite Gravimetry

Recent climate changes have brought about significant ice sheets and glacier melting in many parts of the world. Satellite gravimetry by the Gravity Recovery and Climate Experiment (GRACE) revealed that such ice melting also occurs in small glacier systems in the Arctic region, i.e., Iceland, Svalbard, and the Russian High Arctic. Using monthly gravity solutions from GRACE during 2004.02 2012.01, we obtained the average ice loss rates of 10.9 ± 2.1, 3.6 ± 2.9, and 6.9 ± 7.4 Gt yr-1, for these three glacial systems, respectively. The total ice loss rate is 21.4 ± 12.4 Gt yr-1, about twice as fast as the average rate over a ~40 years interval before the studied period. We found that the ice loss rates in Svalbard and Novaya Zemlya, in the Russian High Arctic, had significant temporal variability, showing decreasing trend before 2008 and increasing trend around the winter of 2009/2010, respectively. Due to such variability, the total ice loss rate becomes as high as 32.9 ± 19.2 Gt yr-1 during 2004.02 2008.01. Such variability in the rate might reflect the strong negative Arctic Oscillation (AO) in the northern hemisphere winter of 2009/2010. Key word: Glacier, Gravity, GRACE, The Arctic Islands, Ice loss Citation: Matsuo K. and K. Heki, 2013: Current ice loss in small glacier systems of the Arctic Islands (Iceland, Svalbard, and the Russian High Arctic) from satellite gravimetry. Terr. Atmos. Ocean. Sci., 24, 657-670, doi: 10.3319/TAO.2013.02.22.01(TibXS)

[1]  L. A. Rasmussen,et al.  Mass balance of three Svalbard glaciers reconstructed back to 1948 , 2007 .

[2]  C. Shum,et al.  Comparisons among contemporary glacial isostatic adjustment models , 2012 .

[3]  Bert Wouters,et al.  Recent mass changes of glaciers in the Russian High Arctic , 2012 .

[4]  Eric Rignot,et al.  Timing and origin of recent regional ice-mass loss in Greenland , 2012 .

[5]  J. Foster,et al.  Winter 2009–2010: A case study of an extreme Arctic Oscillation event , 2010 .

[6]  F. Bryan,et al.  Time variability of the Earth's gravity field: Hydrological and oceanic effects and their possible detection using GRACE , 1998 .

[7]  J. Mangerud,et al.  The glacial History of the Barents and Kara Sea Region , 2004 .

[8]  Byron D. Tapley,et al.  Accelerated Antarctic ice loss from satellite gravity measurements , 2009 .

[9]  W. Peltier.  GLOBAL GLACIAL ISOSTASY AND THE SURFACE OF THE ICE-AGE EARTH: The ICE-5G (VM2) Model and GRACE , 2004 .

[10]  S. Swenson,et al.  Post‐processing removal of correlated errors in GRACE data , 2006 .

[11]  Archie Paulson,et al.  FAST TRACK PAPER: Inference of mantle viscosity from GRACE and relative sea level data , 2007 .

[12]  D. Chambers,et al.  Estimating Geocenter Variations from a Combination of GRACE and Ocean Model Output , 2008 .

[13]  J. Hinderer,et al.  Secular gravity variation at Svalbard (Norway) from ground observations and GRACE satellite data , 2011 .

[14]  Carsten Braun,et al.  Sharply increased mass loss from glaciers and ice caps in the Canadian Arctic Archipelago , 2011, Nature.

[15]  D. Chambers,et al.  GRACE observes small‐scale mass loss in Greenland , 2008 .

[16]  A. N. Tikhonov,et al.  REGULARIZATION OF INCORRECTLY POSED PROBLEMS , 1963 .

[17]  V. Koryakin.  Decrease in glacier cover on the islands of the Eurasian Arctic during the 20th century , 1986 .

[18]  J. Wallace,et al.  The Arctic oscillation signature in the wintertime geopotential height and temperature fields , 1998 .

[19]  C. Amante,et al.  ETOPO1 arc-minute global relief model : procedures, data sources and analysis , 2009 .

[20]  Nico Sneeuw,et al.  Assessing Greenland ice mass loss by means of point-mass modeling: a viable methodology , 2011 .

[21]  T. Vinje.  Anomalies and Trends of Sea-Ice Extent and Atmospheric Circulation in the Nordic Seas during the Period 1864–1998 , 2001 .

[22]  Koji Matsuo,et al.  Time-variable ice loss in Asian high mountains from satellite gravimetry , 2010 .

[23]  W. Tad Pfeffer,et al.  Recent contributions of glaciers and ice caps to sea level rise , 2012, Nature.

[24]  K. Heki,et al.  Anomalous precipitation signatures of the Arctic Oscillation in the time‐variable gravity field by GRACE , 2012 .

[25]  Jeffrey P. Walker,et al.  THE GLOBAL LAND DATA ASSIMILATION SYSTEM , 2004 .

[26]  I. Velicogna.  Increasing rates of ice mass loss from the Greenland and Antarctic ice sheets revealed by GRACE , 2009 .

[27]  R. Seager,et al.  Northern Hemisphere winter snow anomalies: ENSO, NAO and the winter of 2009/10 , 2010 .

[28]  Benjamin F. Chao,et al.  On inversion for mass distribution from global (time-variable) gravity field , 2005 .

[29]  B. Chao,et al.  An effective filtering for GRACE time‐variable gravity: Fan filter , 2009 .

[30]  W. Peltier,et al.  ICE-3G: A new global model of late Pleistocene deglaciation based upon geophysical predictions of po , 1991 .

[31]  D. Rowlands,et al.  Recent glacier mass changes in the Gulf of Alaska region from GRACE mascon solutions , 2008, Journal of Glaciology.

[32]  Byron D. Tapley,et al.  Patagonia Icefield melting observed by Gravity Recovery and Climate Experiment (GRACE) , 2007 .