However, combined measuring stations around the world suggest there has been a global trend towards more frequent and intense hot extremes since the 1950s, as well as more heavy precipitation events. (natureworldnews.com)
Conversely, as cold extremes continue to become fewer and less intense, hot extremes become stronger and more frequent. (wxshift.com)
Davin Edouard L., Sonia I. Seneviratne, Philippe Ciais, Albert Olioso, and Tao Wang, Preferential cooling of hot extremes from cropland albedo managementPNAS 2014 111 (27) 9757 - 9761; published ahead of print June 23, 2014, doi: 10.1073 / pnas.1317323111 link (embrace-project.eu)