Yassine Ait Brahim, Xi'an Jiaotong University, Xi'an, China, Xi'an, China, Jasper A. Wassenburg, Max Planck Institute for Chemistry, Climate Geochemistry Department, Mainz, Germany, Lijuan SHA, Xi'an Jiaotong University, Institute of Global Environmental Change, Xian, China, Francisco William Cruz Sr., Universidade de São Paulo, Instutit of geosciences, São Paulo, Brazil, Michael Deininger, University of Mainz, Mainz, Germany, Abdelfettah Sifeddine, UFF Federal Fluminense University, Niteroi, Brazil, Lhoussaine Bouchaou, University Ibn Zohr, Hydrogeology, Agadir, Morocco, Christoph Spӧtl, Barcelona, Spain, R. Lawrence Edwards, Nanjing Normal University, Dept. of Geography, Nanjing, China and Hai Cheng, University of Minnesota, Minneapolis, MN, United States