Long-range Forecasting

Long-range Forecasting

Author: Jon Scott Armstrong

Publisher: Wiley-Interscience

Published: 1985

Total Pages: 734

ISBN-13:

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Getting started. Forecasting methods. Evaluation. Comparing methods. Commencement.


An Approach to Long-range Forecasting

An Approach to Long-range Forecasting

Author: J. E. Murray

Publisher:

Published: 1981

Total Pages: 40

ISBN-13:

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This note describes a method for making long-range (10-20 years) forecasts of Soviet strategic weapon developments. As the end product of a heuristic reasoning process, the methodology has a requirements orientation, based on clues from Soviet military writing, Soviet technology, and Soviet acquisition practices. Progressing through a sequence of four central inquiries, the methodology examines Soviet mission priorities, weapon deficiencies, and weapon options to forecast Soviet weapon choices. These four inquiries are supported by five background inquiries into Soviet military concepts, Soviet perceptions of threat, current Soviet weapon capabilities, Soviet advanced weapon technology, and available Soviet resources. After describing the overall methodology, this note discusses each of the nine inquiries and presents the author's viewpoint on their boundaries and emphasis.


Long-Range Dependence and Sea Level Forecasting

Long-Range Dependence and Sea Level Forecasting

Author: Ali Ercan

Publisher: Springer Science & Business Media

Published: 2013-08-30

Total Pages: 54

ISBN-13: 3319015052

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​This study shows that the Caspian Sea level time series possess long range dependence even after removing linear trends, based on analyses of the Hurst statistic, the sample autocorrelation functions, and the periodogram of the series. Forecasting performance of ARMA, ARIMA, ARFIMA and Trend Line-ARFIMA (TL-ARFIMA) combination models are investigated. The forecast confidence bands and the forecast updating methodology, provided for ARIMA models in the literature, are modified for the ARFIMA models. Sample autocorrelation functions are utilized to estimate the differencing lengths of the ARFIMA models. The confidence bands of the forecasts are estimated using the probability densities of the residuals without assuming a known distribution. There are no long-term sea level records for the region of Peninsular Malaysia and Malaysia’s Sabah-Sarawak northern region of Borneo Island. In such cases the Global Climate Model (GCM) projections for the 21st century can be downscaled to the Malaysia region by means of regression techniques, utilizing the short records of satellite altimeters in this region against the GCM projections during a mutual observation period. This book will be useful for engineers and researchers working in the areas of applied statistics, climate change, sea level change, time series analysis, applied earth sciences, and nonlinear dynamics.


Statistical Postprocessing of Ensemble Forecasts

Statistical Postprocessing of Ensemble Forecasts

Author: Stéphane Vannitsem

Publisher: Elsevier

Published: 2018-05-17

Total Pages: 364

ISBN-13: 012812248X

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Statistical Postprocessing of Ensemble Forecasts brings together chapters contributed by international subject-matter experts describing the current state of the art in the statistical postprocessing of ensemble forecasts. The book illustrates the use of these methods in several important applications including weather, hydrological and climate forecasts, and renewable energy forecasting. After an introductory section on ensemble forecasts and prediction systems, the second section of the book is devoted to exposition of the methods available for statistical postprocessing of ensemble forecasts: univariate and multivariate ensemble postprocessing are first reviewed by Wilks (Chapters 3), then Schefzik and Möller (Chapter 4), and the more specialized perspective necessary for postprocessing forecasts for extremes is presented by Friederichs, Wahl, and Buschow (Chapter 5). The second section concludes with a discussion of forecast verification methods devised specifically for evaluation of ensemble forecasts (Chapter 6 by Thorarinsdottir and Schuhen). The third section of this book is devoted to applications of ensemble postprocessing. Practical aspects of ensemble postprocessing are first detailed in Chapter 7 (Hamill), including an extended and illustrative case study. Chapters 8 (Hemri), 9 (Pinson and Messner), and 10 (Van Schaeybroeck and Vannitsem) discuss ensemble postprocessing specifically for hydrological applications, postprocessing in support of renewable energy applications, and postprocessing of long-range forecasts from months to decades. Finally, Chapter 11 (Messner) provides a guide to the ensemble-postprocessing software available in the R programming language, which should greatly help readers implement many of the ideas presented in this book. Edited by three experts with strong and complementary expertise in statistical postprocessing of ensemble forecasts, this book assesses the new and rapidly developing field of ensemble forecast postprocessing as an extension of the use of statistical corrections to traditional deterministic forecasts. Statistical Postprocessing of Ensemble Forecasts is an essential resource for researchers, operational practitioners, and students in weather, seasonal, and climate forecasting, as well as users of such forecasts in fields involving renewable energy, conventional energy, hydrology, environmental engineering, and agriculture. Consolidates, for the first time, the methodologies and applications of ensemble forecasts in one succinct place Provides real-world examples of methods used to formulate forecasts Presents the tools needed to make the best use of multiple model forecasts in a timely and efficient manner