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Monthly Meteorological Elements

    Naturevolume 140pages146147 (1937) | Download Citation



    IN the Meteorological Magazine of June there is a new feature that has been developed as a result of a proposal made by Prof. A. Wagner at the International Meteorological Conference at Copenhagen in 1929, that monthly mean values of various meteorological elements should be broadcast as soon as possible after the end of each month for selected meteorological stations. The arrangements for carrying out this proposal were completed and ratified at the Warsaw Conference in 1935, and provided for the inclusion in the broadcasts of mean pressure in millibars or millibars and tenths of a millibar, mean temperature in degrees and tenths, total rainfall in centimetres, and, for certain places, resultant air transport for the month. Since the first broadcasts were made in June 1936, the selected stations have increased in number, and data for Russia, Siberia and America are now included. The figures for May 1937, except those for air transport, have been discussed in the journal mentioned above, pressure and temperature being plotted so as to show cartographically the main features of those elements of the weather for that month over a large part of the northern hemisphere. The interesting fact emerges that the excess of temperature above the average for 1901-30 in the British Isles, which ranged from 1 ° to 3 ° F., was also experienced throughout Europe and the greater part of North America, the excess being more than 5 ° F. over the north-east of Europe, most of Scandinavia and northern Canada and part at least of the Nile valley. The warmth of Europe and North America is seen to be associated with, if not due to, a lowering of mean pressure in the arctic regions and Siberia, combined with an excess of pressure over most of Europe, the United States and southern Canada. This information was available at the Meteorological Office within seven days of the conclusion of the month under review.

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