Persistent multi-decadal Greenland temperature fluctuation through the last millennium

• DOI: 10.1007/s10584-009-9689-9
• Publication Date: 2009-10-02T10:06:37Z
• Authors: Takuro Kobashi; Jeffrey P. Severi...; Jean-Marc Barnola; Kenji Kawamura; Tara Carter; Tosiyuki Nakaegawa
• Keywords: Greenland ice sheet; Ice core; Future sea level; Groenlandia

Future Greenland temperature evolution will affect melting of the ice sheet and associated global sea-level change. Therefore, understanding variability its relation to trends is critical. Here, we reconstruct last 1,000 years central surface from isotopes N2 Ar in air bubbles an core. This technique provides constraints on decadal centennial fluctuations. We found that northern hemisphere changed synchronously at periods ~20 40–100 years. quasi-periodic multi-decadal fluctuation persisted throughout millennium, likely continue into future.