Dynamic Meteorology: Data Assimilation Methods (häftad)
Häftad (Paperback / softback)
Antal sidor
Softcover reprint of the original 1st ed. 1981
Springer-Verlag New York Inc.
Ghil, Michael
8 Illustrations, black and white; XIV, 330 p. 8 illus.
234 x 158 x 19 mm
498 g
Antal komponenter
1 Paperback / softback
Dynamic Meteorology: Data Assimilation Methods (häftad)

Dynamic Meteorology: Data Assimilation Methods

Häftad Engelska, 1981-11-01
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One of the main reasons we cannot tell what the weather will be tomorrow is that we do not know accurately enough what the weather is today. Mathematically speaking, numerical weather prediction (NWP) is an initial-value problem for a system of nonlinear partial differential equations in which the necessary initial values are known only incompletely and inaccurately. Data at the initial time of a numerical forecast can be supplemented, however, by observations of the atmos- phere over a time interval preceding it. New observing systems, in particular polar-orbiting and geostationary satellites, which are providing observations continuously in time, make is absolutely necess- ary to find new and more satisfactory methods of assimilating meteorological observations - for the dual purpose of defining atmospheric states and of issuing forecasts from the states thus defined. FUndamental progress in this area has been made in recent years and this book attempts to give a review and some suggestions for further improvements in the field of meteorological data assimila- tion methods. The European Centre for Medium Range Weather Forecasts (ECMWF) every year organises seminars for the benefit of meteorologists and geophysicists of the ECMWF Member states. The 1980 Seminar was devoted to data assimilation methods, and this book contains selected lectures from that seminar. The purpose of the seminar was twofold: it was intended to give a basic introduction to the subject, as well as an overview of the latest developments in the field.
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An Overview of Meteorological Data Assimilation.- A Review of Methods for Objective Analysis.- Normal Mode Initialization.- Assimilation of Asynoptic Data and the Initialization Problem.- Applications of Estimation Theory to Numerical Weather Prediction.- Convergence of Assimilation Procedures.- Some Climatological and Energy Budget Calculations Using the FGGE III-b Analyses During January 1979.- Appendix Provisional Report on Calculation of Spatial Covariance and Autocorrelation of the Pressure Field.- A. Eliassen.