Spatial Patterns of Glaciers in Response to Spatial Patterns in Regional Climate

Kathleen Huybers Department of Earth and Space Sciences, University of Washington, Seattle, Washington

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Gerard H. Roe Department of Earth and Space Sciences, University of Washington, Seattle, Washington

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Abstract

Glaciers are direct recorders of climate history and have come to be regarded as emblematic of climate change. They respond to variations in both accumulation and ablation, which can have separate atmospheric controls, leading to some ambiguity in interpreting the causes of glacier changes. Both climate change and climate variability have characteristic spatial patterns and time scales. The focus of this study is the regional-scale response of glaciers to natural patterns of climate variability. Using the Pacific Northwest of North America as the setting, the authors employ a simple linear glacier model to study how the combination of patterns of melt-season temperature and patterns of annual accumulation produce patterns of glacier length variations. Regional-scale spatial correlations in glacier length variations reflect three factors: the spatial correlations in precipitation and melt-season temperature, the geometry of a glacier and how it determines the relative importance of temperature and precipitation, and the climatic setting of the glaciers (i.e., maritime or continental). With the self-consistent framework developed here, the authors are able to evaluate the relative importance of these three factors. The results also highlight that, in order to understand the natural variability of glaciers, it is critically important to know the small-scale patterns of climate in mountainous terrain. The method can be applied to any area containing mountain glaciers and provides a baseline expectation for natural glacier variation against which the effects of climate changes can be evaluated.

Corresponding author address: Kathleen Huybers, Department of Earth and Space Sciences, University of Washington, Box 351310, Seattle, WA 98195. Email: khuybers@u.washington.edu

Abstract

Glaciers are direct recorders of climate history and have come to be regarded as emblematic of climate change. They respond to variations in both accumulation and ablation, which can have separate atmospheric controls, leading to some ambiguity in interpreting the causes of glacier changes. Both climate change and climate variability have characteristic spatial patterns and time scales. The focus of this study is the regional-scale response of glaciers to natural patterns of climate variability. Using the Pacific Northwest of North America as the setting, the authors employ a simple linear glacier model to study how the combination of patterns of melt-season temperature and patterns of annual accumulation produce patterns of glacier length variations. Regional-scale spatial correlations in glacier length variations reflect three factors: the spatial correlations in precipitation and melt-season temperature, the geometry of a glacier and how it determines the relative importance of temperature and precipitation, and the climatic setting of the glaciers (i.e., maritime or continental). With the self-consistent framework developed here, the authors are able to evaluate the relative importance of these three factors. The results also highlight that, in order to understand the natural variability of glaciers, it is critically important to know the small-scale patterns of climate in mountainous terrain. The method can be applied to any area containing mountain glaciers and provides a baseline expectation for natural glacier variation against which the effects of climate changes can be evaluated.

Corresponding author address: Kathleen Huybers, Department of Earth and Space Sciences, University of Washington, Box 351310, Seattle, WA 98195. Email: khuybers@u.washington.edu

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  • Anders, A. M., G. H. Roe, D. R. Durran, and J. R. Minder, 2007: Small-scale spatial gradients in climatological precipitation on the Olympic Peninsula. J. Hydrometeor., 8 , 1068–1081.

    • Search Google Scholar
    • Export Citation
  • Bitz, C. M., and D. S. Battisti, 1999: Interannual to decadal variability in climate and the glacier mass balance in Washington, western Canada, and Alaska. J. Climate, 12 , 3181–3196.

    • Search Google Scholar
    • Export Citation
  • Braithwaite, R. J., and Y. Zhang, 2000: Sensitivity of mass balance of five Swiss glaciers to temperature changes assessed by tuning a degree-day model. J. Glaciol., 46 , 7–14.

    • Search Google Scholar
    • Export Citation
  • Bretherton, C. S., M. Widmann, V. P. Dymnikov, J. M. Wallace, and I. Bladé, 1999: The effective number of spatial degrees of freedom of a time-varying field. J. Climate, 12 , 1990–2009.

    • Search Google Scholar
    • Export Citation
  • Chinn, T., S. Winkler, M. J. Salinger, and N. Haakensen, 2005: Recent glacier advances in Norway and New Zealand: A comparison of their glaciological and meteorological causes. Geogr. Ann., 87 , 141–157.

    • Search Google Scholar
    • Export Citation
  • Colle, B. A., C. F. Mass, and K. J. Westrick, 2000: MM5 precipitation verification over the Pacific Northwest during the 1997–99 cool seasons. Wea. Forecasting, 15 , 730–744.

    • Search Google Scholar
    • Export Citation
  • Grell, G., J. Dudhia, and D. Stauffer, 1995: A description of the Fifth-Generation Penn State/NCAR Mesoscale Model (MM5). NCAR Tech. Note. NCAR/TN-398+STR, 117 pp.

    • Search Google Scholar
    • Export Citation
  • Hamlet, A. F., P. W. Mote, M. P. Clark, and D. P. Lettenmaier, 2005: Effects of precipitation and temperature variability on snowpack trends in the western United States. J. Climate, 18 , 4545–4561.

    • Search Google Scholar
    • Export Citation
  • Harper, J. T., 1993: Glacier terminus fluctuations on Mount Baker, Washington, U.S.A., 1940-1990, and climatic variations. Arct. Alp. Res., 25 , 332–340.

    • Search Google Scholar
    • Export Citation
  • Harrison, W. D., D. H. Elsberg, K. A. Echelmeyer, and R. M. Krimmel, 2001: On the characterization of glacier response by a single time-scale. J. Glaciol., 47 , 659–664.

    • Search Google Scholar
    • Export Citation
  • Hodge, S. M., D. C. Trabant, R. M. Krimmel, T. A. Heinrichs, R. S. March, and E. G. Josberger, 1998: Climate variations and changes in mass of three glaciers in western North America. J. Climate, 11 , 2161–2179.

    • Search Google Scholar
    • Export Citation
  • Jóhannesson, T., C. Raymond, and E. D. Waddington, 1989: Time-scale for adjustment of glaciers to changes in mass balance. J. Glaciol., 21 , 355–369.

    • Search Google Scholar
    • Export Citation
  • Legates, D. R., and C. J. Willmott, 1990a: Mean seasonal and spatial variability in gauge-corrected, global precipitation. Int. J. Climatol., 10 , 111–127.

    • Search Google Scholar
    • Export Citation
  • Legates, D. R., and C. J. Willmott, 1990b: Mean seasonal and spatial variability in global surface air temperature. Theor. Appl. Climatol., 41 , 11–21.

    • Search Google Scholar
    • Export Citation
  • Mantua, N. A., S. R. Hare, Y. Zhang, J. M. Wallace, and R. C. Francis, 1997: A Pacific interdecadal climate oscillation with impacts on salmon production. Bull. Amer. Meteor. Soc., 78 , 1069–1079.

    • Search Google Scholar
    • Export Citation
  • Mass, C. F., and Coauthors, 2003: Regional environmental prediction over the Pacific Northwest. Bull. Amer. Meteor. Soc., 84 , 1353–1366.

    • Search Google Scholar
    • Export Citation
  • Minder, J. M., D. R. Durran, G. H. Roe, and A. M. Anders, 2008: The climatology of small-scale orographic precipitation over the Olympic Mountains: Patterns and processes. Quart. J. Roy. Meteor. Soc., 134 , 817–839.

    • Search Google Scholar
    • Export Citation
  • Mölg, T., and D. R. Hardy, 2004: Ablation and associated energy balance of a horizontal glacier surface on Kilimanjaro. J. Geophys. Res., 109 , D16104. doi:10.1029/2003JD004338.

    • Search Google Scholar
    • Export Citation
  • Nesje, A., 2005: Briksdalsbreen in western Norway: AD 1900-2004 frontal fluctuations as a combined effect of variations in winter precipitation and summer temperature. Holocene, 15 , 1245–1252.

    • Search Google Scholar
    • Export Citation
  • Oerlemans, J., 2001: Glaciers and Climate Change. AA Balkema Publishers, 160 pp.

  • Oerlemans, J., 2005: Extracting a climate signal from 169 glacier records. Science, 308 , 675–677.

  • Ohmura, A., P. Kasser, and M. Funk, 1992: Climate at the equilibrium line of glaciers. J. Glaciol., 38 , 397–411.

  • Ohmura, A., M. Wild, and L. Bengtsson, 1996: A possible change in mass balance of Greenland and Antarctic ice sheets in the coming century. J. Climate, 9 , 2124–2135.

    • Search Google Scholar
    • Export Citation
  • O’Neal, M. A., 2005: Late Little Ice Age glacier fluctuations in the Cascade Range of Washington and northern Oregon. Ph.D. dissertation, Dept. of Earth and Space Science, University of Washington, 117 pp.

  • Paterson, W. S. B., 1994: The Physics of Glaciers. 3rd ed. Pergamon Press, 480 pp.

  • Pelto, M. S., and C. Hedlund, 2001: Terminus behavior and response time of North Cascade glaciers, Washington, U. S. A. J. Glaciol., 47 , 497–506.

    • Search Google Scholar
    • Export Citation
  • Porter, S., 1977: Present and past glaciation threshold in the Cascade Range, Washington, USA: Topographic and climatic controls and paleoclimatic implications. J. Glaciol., 18 , 101–116.

    • Search Google Scholar
    • Export Citation
  • Post, A., D. Richardson, W. V. Tangborn, and F. L. Rosselot, 1971: Inventory of glaciers in the North Cascades, Washington. USGS Professional Paper 705-A, 26 pp.

    • Search Google Scholar
    • Export Citation
  • Putkonen, J., and M. O’Neal, 2006: Degradation of unconsolidated Quaternary landforms in the western North America. Geomorphology, 75 , 408–419.

    • Search Google Scholar
    • Export Citation
  • Reichert, B. K., L. Bengtsson, and J. Oerlemans, 2002: Recent glacier retreat exceeds internal variability. J. Climate, 15 , 3069–3081.

    • Search Google Scholar
    • Export Citation
  • Roe, G. H., 2009: Feedbacks, time scales, and seeing red. Annu. Rev. Earth Planet. Sci., 37 , 93–115. doi:10.1146/annurev.earth.061008.134734.

    • Search Google Scholar
    • Export Citation
  • Roe, G. H., and M. A. O’Neal, 2009: The response of glaciers to intrinsic climate variability: Observations and models of late Holocene variations. J. Glaciol., in press.

    • Search Google Scholar
    • Export Citation
  • Rupper, S. B., 2007: Glacier sensitivity and regional climate: Past and present. Ph.D. dissertation, Dept. of Earth and Space Sciences, University of Washington, 276 pp.

  • Rupper, S. B., and G. H. Roe, 2008: Glacier changes and regional climate: A mass and energy balance approach. J. Climate, 21 , 5384–5401.

    • Search Google Scholar
    • Export Citation
  • Sapaino, J. J., W. D. Harrison, and K. A. Echelmeyer, 1998: Elevation, volume and terminus changes of nine glaciers in North America. J. Glaciol., 44 , 119–135.

    • Search Google Scholar
    • Export Citation
  • Sidjak, R. W., and R. D. Wheate, 1999: Glacier mapping of the Illecillewaet icefield, British Columbia, Canada, using Landsat TM and digital elevation data. Int. J. Remote Sens., 20 , 273–284.

    • Search Google Scholar
    • Export Citation
  • Tangborn, W. V., A. G. Fountain, and W. G. Sikonia, 1990: Effect of area distribution with altitude on glacier mass balance—A comparison of North and South Klawatti glaciers, Washington State, U.S.A. Ann. Glaciol., 14 , 278–282.

    • Search Google Scholar
    • Export Citation
  • Wallace, J. M., and D. S. Gutzler, 1981: Teleconnections in the geopotential height field during the Northern Hemisphere winter. Mon. Wea. Rev., 109 , 784–812.

    • Search Google Scholar
    • Export Citation
  • Wallace, J. M., E. M. Rasmusson, T. P. Mitchell, V. E. Kousky, E. S. Sarachik, and H. von Storch, 1998: On the structure and evolution of ENSO-related climate variability in the tropical Pacific: Lessons from TOGA. J. Geophys. Res., 103 , 14241–14259.

    • Search Google Scholar
    • Export Citation
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