New Zealand glacier responses to climate change of the past century

Abstract An investigation of 127 glaciers of the New Zealand Southern Alps shows the losses that have occurred since the end of the Little Ice Age. On average they have shortened by 38% and lost 25% in area. The great variability within the measurements emphasises the need to consider response times and climate sensitivity when analysing glacier fluctuations. The upward shift of glacier mean elevation with this century of change is approximately equivalent to a temperature rise of 0.6°C. Extensive debris cover on many glaciers is significant in damping the climate signal, and proglacial lake formation may decouple a glacier from the climate signal.

[1]  A. Ruddell.  Recent glacier and climate change in the New Zealand Alps , 1995 .

[2]  Tómas Jóhannesson,et al.  Time–Scale for Adjustment of Glaciers to Changes in Mass Balance , 1989, Journal of Glaciology.

[3]  The influence of sediment budget on geomorphic activity of the Tasman Glacier, Mount Cook National Park, New Zealand , 1989 .

[4]  M. J. Salinger,et al.  Variations of the Stocking (Te Wae Wae) Glacier, Mount Cook, and climatic relationships , 1983 .

[5]  W. Haeberli.  ACCELERATED GLACIER AND PERMAFROST CHANGES IN THE ALPS , 1994 .

[6]  T. Chinn,et al.  Ivory Glacier, New Zealand, an I.H.D. Representative Basin Study , 1978, Journal of Glaciology.

[7]  C. Warren.  Freshwater calving and anomalous glacier oscillations: recent behaviour of Moreno and Ameghino Glaciers, Patagonia , 1994 .

[8]  J. Oerlemans,et al.  Sensitivity of Glaciers and Small Ice Caps to Greenhouse Warming , 1992, Science.

[9]  R. Suggate.  Franz Josef and Other Glaciers of the Southern Alps, New Zealand , 1950, Journal of Glaciology.

[10]  M. Kirkbride.  The temporal significance of transitions from melting to calving termini at glaciers in the central Southern Alps of New Zealand , 1993 .

[11]  J. Oerlemans.  Quantifying Global Warming from the Retreat of Glaciers , 1994, Science.

[12]  L. Krenek.  Changes in the glaciers of Mt Ruapehu in 1955 , 1959 .

[13]  T. Chinn,et al.  Holocene glacier variations in New Zealand: A review , 1988 .

[14]  W. Sara.  Franz Josef and Fox Glaciers, 1951–1967 , 1968 .

[15]  A. F. Gellatly.  Historical Records of Glacier Fluctuations in Mt Cook National Park, New Zealand: A Century of Change , 1985 .

[16]  J. Oerlemans.  Climate sensitivity of glaciers in southern Norway: application of an energy-balance model to Nigardsbreen, Hellstugubreen and Alfotbreen , 1992 .

[17]  J. Oerlemans.  Simulation of Historic Glacier Variations with a Simple Climate-Glacier Model , 1988, Journal of Glaciology.

[18]  B. Fitzharris,et al.  Reconstruction of Mass Balance Variations for Franz Josef Glacier, New Zealand, 1913 to 1989 , 1992 .

[19]  David C. Nobes,et al.  Downwasting of the Tasman Glacier, South Island, New Zealand: Changes in the terminus region between 1971 and 1993 , 1995 .

[20]  P. Wardle.  Variations of the Glaciers of Westland National Park and the Hooker Range, New Zealand , 1973 .

[21]  J. Hay,et al.  Behaviour of New Zealand Glaciers and Atmospheric Circulation Changes over the Past 130 years , 1992 .

[22]  T. Chinn.  Glacier Fluctuations in the Southern Alps of New Zealand Determined from Snowline Elevations , 1995, Arctic and Alpine Research.

[23]  The Little Ice Age , 1989 .

[24]  M. J. Salinger.  New Zealand climate: The temperature record, historical data and some agricultural implications , 1979 .