Variations in melt-layer frequency in the GISP2 ice core: implications for Holocene summer temperatures in central Greenland

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Abstract

The rare melt features in the GISP2, central Greenland deep ice core have decreased in frequency over the most recent 7000 year. Calibration of this change in melt frequency against modern spatial and temporal variation of melt frequency and temperatures in central Greenland, indicates that mean mid-summer temperatures have cooled over the most recent 7000 years by slightly more than 1°C. Comparison to GRIP isotopic records from central Greenland and to the melt record from the Agassiz Ice Cap, Arctic Canada, suggests some seasonal and regional coherence for this cooling signal, as well as for a cold event about 8000-8500 BP. -from Authors

Original languageEnglish (US)
Pages (from-to)64-70
Number of pages7
JournalAnnals of Glaciology
Volume21
StatePublished - Jan 1 1995

All Science Journal Classification (ASJC) codes

  • Earth-Surface Processes

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