Abstract
BAROMETRIC series from manuscript and printed sources were recently utilized for the preparation of maps of annual anomalies. From these maps it was possible to determine the pressure at the Wash (53° N., 0½° E.) since 1706 and pressure gradients (since 1796) between positions 400 km south-south-west and north-north-east and 400 km oast-south-east and west-north-west (corresponding to west and south calculated components of surface wind). In Fig. 1 the mean values for ten-year periods of pressure and pressure gradients are shown. The ‘SW wind’ is a measure of the closeness of the isobars directed west-south-west to east-north-east, and the ‘NW wind’ relates to a component of pressure gradient at right angles to this. The latter component is small. Indeed, the variation in direction from one thirty-year period to another of the prevailing wind, as shown in Fig. 1 (for example, 224°), is much smaller than has hitherto been supposed.
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SCHOVE, D. Barometer and Wind Fluctuations in North-West Europe, 1796–1950. Nature 197, 1101 (1963). https://doi.org/10.1038/1971101a0
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DOI: https://doi.org/10.1038/1971101a0
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