Meteorological observations on Dun Fell, a mountain station in Northern England

Meteorological observations have been kept lor three years 1937–40 on the exposed summit of Dun Fell in the Northern Pennines, including a continuous record of temperature. In a semi‐maritime climate this mountain station at 2,735 ft. is well above the tree‐line and conditions are at times severe. Estimates of the longer‐period averages are made for several climatic elements and compared with those from summit stations elsewhere. It is emphasised that over longer periods of time considerable variations in the upland climate are likely to occur as a result of small changes in the average distribution of pressure and that these will react considerably upon the vegetation. Although this record was initiated for other reasons and is unpretentious in scope it may be added that this is the first series of “mountain” observations to become available in England.