Greenland warming of 1920–1930 and 1995–2005 Petr Chylek Los Alamos National Laboratory, Space and Remote Sensing Sciences, Los Alamos, New Mexico, USA M. K. Dubey Los Alamos National Laboratory, Earth and Environmental Sciences, Los Alamos, New Mexico, USA G. Lesins Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, Canada We provide an analysis of Greenland temperature records to compare the current (1995–2005) warming period with the previous (1920–1930) Greenland warming. We find that the current Greenland warming is not unprecedented in recent Greenland history. Temperature increases in the two warming periods are of a similar magnitude, however, the rate of warming in 1920–1930 was about 50% higher than that in 1995–2005