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    Comparison of glacier-inferred temperatures with observations and climate model simulations

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    Comparison of glacier-inferred temperatures with observations and climate model simulations (158.0Kb)

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    Author
    Ren, Diandong; KAROLY, DAVID
    Date
    2006
    Source Title
    Geophysical Research Letters
    Publisher
    American Geophysical Union
    University of Melbourne Author/s
    Karoly, David
    Affiliation
    Science - Earth Sciences
    Metadata
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    Document Type
    Journal Article
    Citations
    D., & Karoly, D. (2006). Comparison of glacier-inferred temperatures with observations and climate model simulations. Geophysical Research Letters, 33, doi: 10.1029/2006GL027856.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/32779
    Description

    © 2006 American Geophysical Union

    Abstract
    A reconstructed temperature history for different regions of the globe was prepared by Oerlemans (2005) from length changes of 169 glaciers. In this study, we compare the glacier-inferred temperature variations over 1900–1990 with observed and climate model simulated temperatures for the global average and for five regions: Southern Hemisphere, northwest America, Atlantic, Asia, and the Alps. There is reasonable agreement between the glacier-inferred temperature trends and the observed temperature trends for the globe and in four of the five regions (except northwest America, NWAme). The trends for the globe and in these regions are significantly different from zero, cannot be explained by natural variability (again except for NWAme), and are consistent with the model-simulated response to anthropogenic forcing in all regions. Hence, it is likely that the glacier length reductions are outside the range of natural variations and due in part to regional warming associated with increasing concentrations of greenhouse gases in the atmosphere.
    Keywords
    climate variability; glacier length variations; GCM simulations of temperature

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