1. State Key Laboratory of Loess and Quaternary Geology, Shaanxi Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Xi’an AMS Center, Institute of Earth Environment, CAS, Xi’an 710061, China
2. Center for Nuclear Technologies, Risø Campus, Technical University of Denmark, Frederiksborgvej 399, Roskilde 4000, Denmark
3. University of Chinese Academy of Sciences, Beijing 100049, China
4. CAS Center for Excellence in Quaternary Science and Global Change, Xi’an 710061, China
5. Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266100, China