This computation involved: Berlin Stratospheric Monthly mean Temperatures data processing deployed on Free University of Berlin, Institute of Meteorology. Data processing developped by Dr. Karin Labitzke to produce the Berlin Stratospheric Monthly mean temperature data set. The Freie Universitat Berlin is one of the leading universities in the world and distinguishes itself through its modern and international character. It is also one of the largest universities in Germany, offering degree courses in more than a hundred subjects for 35,500 students of which 15 per cent come from other countries.