Dust concentration in the NGRIP ice core ...

• Main Author: Ruth, Urs
• Format: Dataset
• Language: English
• Published: PANGAEA 2007
• Subjects: DEPTH, ice/snow; Depth, top/min; Depth, bottom/max; Age model; Age model, optional; Dust concentration; Calcium, relative; Ice drill; Age model, SS09sea; Age model, GICC05; Laser particle counter, KLOTZ; Calculated; NGRIP; Sampling/drilling ice; North Greenland Ice Core Project NGRIP; Dansgaard-Oeschger events; Greenland; Greenland ice core; Greenland Ice core Project; ice core; North Atlantic; North Greenland; North Greenland Ice Core Project
• Online Access: https://dx.doi.org/10.1594/pangaea.587836; https://doi.pangaea.de/10.1594/PANGAEA.587836

Corresponding millennial-scale climate changes have been reported from the North Atlantic region and from east Asia for the last glacial period on independent timescales only. To assess their degree of synchrony we suggest interpreting Greenland ice core dust parameters as proxies for the east Asian monsoon systems. This allows comparing North Atlantic and east Asian climate on the same timescale in high resolution ice core data without relative dating uncertainties. We find that during Dansgaard-Oeschger events North Atlantic region temperature and east Asian storminess were tightly coupled and changed synchronously within 5-10 years with no systematic lead or lag, thus providing instantaneous climatic feedback. The tight link between North Atlantic and east Asian glacial climate could have amplified changes in the northern polar cell to larger scales. We further find evidence for an early onset of a Younger Dryas-like event in continental Asia, which gives evidence for heterogeneous climate change within ... : Supplement to: Ruth, Urs; Bigler, Matthias; Röthlisberger, Regine; Siggaard-Andersen, Marie-Louise; Kipfstuhl, Sepp; Goto-Azuma, Kumiko; Hansson, Margareta E; Johnsen, Sigfús Jóhann; Lu, Huayu; Steffensen, Jørgen Peder (2007): Ice core evidence for a very tight link between North Atlantic and east Asian glacial climate. Geophysical Research Letters, 34, L03706 ...