Special issue articles Reconstructing Late Holocene North Atlantic atmospheric circulation changes using functional paleoclimate networks 11473 Antarctic climate variability on regional and continental scales over the last 2000 years 11472 Episodic Neoglacial expansion and rapid 20th century retreat of a small ice cap on Baffin Island, Arctic Canada, and modeled temperature change 11474 Regional Antarctic snow accumulation over the past 1000 years 11475 The PMIP4 contribution to CMIP6 – Part 4: Scientific objectives and experimental design of the PMIP4-CMIP6 Last Glacial Maximum experiments and PMIP4 sensitivity experiments 11457