Developing annual chronologies of abrupt climatic events during Last Glacial Interglacial Transition.

Modern Arctic warming has been compared with large magnitude abrupt climatic warming of the last glacial period. Jansen et al. (2020) suggests, using modern and palaeodatasets detected in both Arctic sea ice records and within the Greenland ice sheet, that an abrupt critical transition in the Arctic climate system is occurring currently. However, knowing what these changes mean for future changes in terrestrial landscapes and environments is often based on numerical modelling, and require validation using empirical datasets to assess how past abrupt climatic transitions affected terrestrial landscapes. The Last Glacial Interglacial Transition (~19 to 8 ka BP) was a period of abrupt change is ideal f for understanding the rate and magnitudes of of environmental responses to abrupt changes. Recent advances allow annual chronologies from lake sediments can begin to answer these questions (e.g. Palmer et al., 2020). Projects aim to improve chronological resolution of LGIT archives, developing lithological proxy records from the varve sediments, and tying the sequences to absolute timescales.