Perception of the state of knowledge about climate and of the role of climate science Hans von Storch Institut für Küstenforschung, HZG und Ocean University of China, Qingdao Thanks to Chen Xueen Dennis Bray Birgit Pfau-Effinger Andreas Ullmann Silvio Gualdi Holger Schüttrumpf RWTH, Institut für Wasserbau, 1. Juli 2019

Hans von Storch Climate researcher (in the field since 1971) Coastal climate (storms, storm surges, waves; North and Baltic Sea, North Atlantic, Yellow Sea); statistical analysis Director emeritus of the Institute of Coastal Research of the Helmholtz Zentrum Geesthacht, Germany Professor at Universität Hamburg and at the Ocean University of China Editor-in-chief of the Oxford University Press Research Encyclopedia on Climate Science Lead author of IPCC AR3 and AR5. Co-Chair of regional assessment reports Baltic Sea Catchment (BACC) and Hamburg http://www.hvonstorch.de/klima/

OUC - Ocean University of China, College of … Response rate: 87 out of about 200, ca. 43% May 1 to December 31, 2015, and September 1 to 30, 2016 SICCS - PhD/Master School Cluster of Excellence “Integrated Climate System Analysis and Prediction” (CliSAP) at the University of Hamburg Response rate: 62 out of 100, 62% June 1 to June 26, 2017 CMCC - Centro Euro-Mediterraneo sui Cambiamenti Climatici, Venezia & Bologna Response rate: 30 out of 200, 15% October 2018 RWTH - Institut für Wasserbau, RWTH Aachen, January 2019 Surveys

Factors, which may be behind differences Time of survey (e.g., before the Paris accord, or after) Nationality of studied group (Chinese, broadly international, mostly German) Field of academic research (environment, climate, engineering) Other The results are considered (believed to be) representative for the considered group, but not for ”Chinese scholars” or “German scholars”. Publication so far (on OUC Qingdao & SICCS Hamburg): von Storch, H., Chen X, B.Pfau-Effinger, D. Bray and A. Ullmann, 2019: Attitudes of young scholars in Qingdao and Hamburg about climate change and climate policy – the role of culture for the explanation of differences. Advances in Climate Change Research, online: 10.1016/j.accre.2019.04.001 (NOTE: Figures are partly erroneous; text is fine).