Global speleothem oxygen isotope data report in the past 30 ka
As global warming continues to intensify,it will cause significant loss for climate sensitive regions,escalating the risk of extreme climate events.Advancements in paleoclimatology provide a crucial perspective for climate change prediction in the context of global warming.Speleothems,which can be precisely dated,are vital materials for paleoclimatic research in the Late Quaternary.To date,stalagmite paleocl imate scientists from all over the world,including those in China,have conducted numerous high-precision high-resolution studies on stalagmites in terrestrial karst cave regions.Studying the Last Glacial Maximum,encompassing glaciation,deglaciation,and the contemporary interglacial period(Holocene),is pivotal for reconstructing past climates and forecasting future climate systems.In this report,we have collected 264 speleothem oxygen isotope records on a global scale,with the aim of establishing a global precipitation oxygen isotope database spanning the past 30 ka.We have analyzed the distribution and mean resolution of the data across regions and categorized the data according to chronology,time span,resolution,and proxy indicators.We have summarized records of stalagmites from the Holocene and identified some patterns.Moving forward,we will conduct a detailed study of the glacial-interglacial and Holocene records in different regions globally,discussing climate variability and driving mechanisms across various timescales and climatic contexts.
global regionspeleothem oxygen isotopedataset30 katime scales
万方数据
维普
