## Weather Prediction by Numerical ProcessThe idea of forecasting the weather by calculation was first dreamt of by Lewis Fry Richardson. The first edition of this book, published in 1922, set out a detailed algorithm for systematic numerical weather prediction. The method of computing atmospheric changes, which he mapped out in great detail in this book, is essentially the method used today. He was greatly ahead of his time because, before his ideas could bear fruit, advances in four critical areas were needed: better understanding of the dynamics of the atmosphere; stable computational algorithms to integrate the equations; regular observations of the free atmosphere; and powerful automatic computer equipment. Over the ensuing years, progress in numerical weather prediction has been dramatic. Weather prediction and climate modelling have now reached a high level of sophistication, and are witness to the influence of Richardson's ideas. This edition contains a new foreword by Peter Lynch that sets the original book in context. |

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absorbed absorption adiabatic Angstrom approximation balloon Bjerknes chequer cloud column components Computing Form constant continuity of mass conventional strata corresponding denoted density diffusion distribution dry air dynamical equations eddies eddy-diffusion eddy-viscosity energy entropy entropy-per-mass equation of continuity ergs errors evaporation expressed finite differences flux of heat G. I. Taylor geostrophic geostrophic wind given gradient horizontal area hydrostatic equation increase independent of height initial integral isobaric kilometres L. F. Richardson latent heat latitude layer linear longitude mean value Meteorologie metres millibars momentum motion Napier Shaw neglected observations obtained potential temperature precipitation pressure quantities radiation saturated scattered sea-level smoothed soil stations stomata stratosphere stratum stress tabulated taken theory thermal turbulence unit upwards vapour variables variation vertical velocity viscosity W. H. Dines wave length wind zero