Laboratory of Speleothem and Paleoclimatology, Institute of Geology, Chinese Academy of Sciences, Beijing 100029, China;
,Laboratory of Speleothem and Paleoclimatology, Institute of Geology, Chinese Academy of Sciences, Beijing 100029, China;
State Key Laboratory of Loess and Quaternary Geology, Chinese Academy of Sciences, Xi’an 710054, China;
,Beijing Geological Survey Institute, Beijing 102206, China,Beijing Geological Survey Institute, Beijing 102206, China;
stalagmite lamina annual gray level variations temperature.;