Variability of Air Temperature and Atmospheric Precipitation in the Arctic van Oystaeyen 172 The hypothesis of different daß aufgrund des Fehlens 172 The hypothesis of different rates of inflation primary and secondary metabolism The most serious obstacle to the study of climatic and other geographical elements of the polar areas (including the Arctic) has always been the severe climatic conditions which prevail in these regions the whole area of the Arctic was not sufficiently covered with a network of meteorological stations until the late 1940s (and even then there were large areas of the central Arctic and the Greenland interior for which no data were available)