Download or read book Some Techniques for Short range Terminal Forecasting written by Clay G. Russell and published by . This book was released on 1970 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report describes several techniques applicable to short-range terminal forecasting. Areas discussed are procedures for graphical extrapolation, nephanalysis, forecasting frontal precipitation, and the lowering of ceilings during precipitation. The use of FPS-77 rada and weather satellite data is shown as they pertain to short-range forecasting. (Author).
Download or read book The Use of Trajectories in Terminal Forecasting written by John W. Diercks and published by . This book was released on 1970 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Program to Test Skill in Terminal Forecasting written by Irving I. Gringorten and published by . This book was released on 1955 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Interactive Graphics Processing in Short range Terminal Weather Forecasting written by and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The products judged most useful in preparing short-range terminal forecasts included (1) a station model time series display, (2) conventional geographic data displays presented simultaneously as four quadrant panels guidance on one screen, (3) mesoscale surface objective analyses, and (4) a forecast guidance prodecure based on 2-D upper-air trajectories and sensible weather algorithms based on imagery from the GOES satellite. The importance of half-hourly visible and IR imagery from the GOES satellite in short-range terminal forecasting was confirmed in this experiment. The participating forecasters relied more heavily on it to prepare their forecasts than any other source. The manipulation of digital imagery in a computer-based interactive graphic system through time-series looping, color enhancements, and overlaying conventional plots and analyses on it, provides a wealth of qualitative and quantitative guidance for forecasting. The numerical forecasts yielded superior rms errors compared to persistence at all forecast intervals except 1 h. At 4 h, the improvement over persistence ranged from about 21 percent for wind forecasts to about 34 percent for total cloud amount, while the 6-h quantitative precipitation forecasts yielded a 39 percent improvement.
Download or read book Terminal Area Forecasts written by United States. Aviation Forecast Branch and published by . This book was released on 1992 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Interactive Graphics Processing in Short range Terminal Weather Forecasting written by Donald A. Chisholm and published by . This book was released on 1983 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: The products judged most useful in preparing short-range terminal forecasts included (1) a station model time series display, (2) conventional geographic data displays presented simultaneously as four quadrant panels guidance on one screen, (3) mesoscale surface objective analyses, and (4) a forecast guidance prodecure based on 2-D upper-air trajectories and sensible weather algorithms based on imagery from the GOES satellite. The importance of half-hourly visible and IR imagery from the GOES satellite in short-range terminal forecasting was confirmed in this experiment. The participating forecasters relied more heavily on it to prepare their forecasts than any other source. The manipulation of digital imagery in a computer-based interactive graphic system through time-series looping, color enhancements, and overlaying conventional plots and analyses on it, provides a wealth of qualitative and quantitative guidance for forecasting. The numerical forecasts yielded superior rms errors compared to persistence at all forecast intervals except 1 h. At 4 h, the improvement over persistence ranged from about 21 percent for wind forecasts to about 34 percent for total cloud amount, while the 6-h quantitative precipitation forecasts yielded a 39 percent improvement.
Download or read book An Assessment of Interactive Graphics Processing in Short range Terminal Weather Forecasting written by Donald A. Chisholm and published by . This book was released on 1984 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The products judged most useful in preparing short-range terminal forecasts included: (1) conventional geographic data displays presented simultaneously as four quadrant panels on one screen, (2) regional scale surface analyses, plots and data listings of basic variables, (3) satellite-based trajectory technique, (4) tailored plot displays such as the station-model time-series display, and (5) mapped displays of forecast guidance derived from the NMC LFM model. The importance of half-hourly visible and IR imagery from GOES in short-range terminal forecasting was confirmed in this experiment. The forecasters relied more heavily on it to prepare their forecasts than any other data source. The manipulation of digital imagery in a computer-based interactive graphics system through time-series looping, color enhancements, and overlaying conventional plots and analyses on it, provides a wealth of qualitative and quantitative guidance for fore- casting. The numerical forecasts yielded superior rmses compared to persistence for all forecast intervals and for each forecast element. Probability forecasts were substantially better than persistence probability and sample climatology. GEM showed skill relative to persistence probability but yielded larger rmses did persistence in its numerical form. MOS guidance was found to be useful for forecast intervals of 4 hr or longer.
Download or read book The Use of Trajectories in Terminal Forecasting Second Report written by and published by . This book was released on 1970 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trajectory forecasting techniques have been introduced at 75 Air Weather Service forecast units. Trajectory data, in the form of parcel origins and forecast temperatures, dew points, and cloud amounts, are transmitted twice daily to these forecast units. These data are a by-product of the Air Force Global Weather Central's (AFGWC) Multi-Level Cloud-Forecasting Model and are used to supplement conventional forecast tools. In addition, 600-meter (above ground level) temperature and dew-point forecasts from AFGWC's Boundary-Layer Model are included in the trajectory bulletin. Trajectory techniques have been integrated subjectively and objectively into forecast procedures with encouraging results. Ceiling and visibility forecasts prepared with trajectory data have verified better than forecasts prepared without trajectory data. This report discusses past evaluation programs, characteristics of the trajectory model, and procedures for using the data in forecast applications. (Author).
Download or read book Forecasters Guide to Tropical Meteorology written by Gary D. Atkinson and published by . This book was released on 1971 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical manual for training and reference use of USAF weather forecasters who will work in the tropics, it covers basic facts of climatology, circulation, synoptic models, analysis and forecasting, application throughout the tropics. A broad survey is made of the literature, evaluated in light of the experience of the author. Physical factors controlling tropical circulations are briefly discussed. The data sources for synoptic purposes are reviewed. Climatology of pressure, winds, temperature, humidity, clouds, rainfall and disturbances is presented in a form specially suitable for forecasters. Analysis and for forecasting of disturbances, cyclones, severe weather, terminal weather, etc., are treated at length. Emphasis is placed on uses of climatology and satellite cloud photos. Over 230 figures adapted from the literature or prepared by the author serve to illustrate all the essential facts and principles discussed. A summary of the state of art and future outlook of tropical meteorology is included.
Download or read book On the Operational Value of Terminal Weather Forecasts written by C. N. Touart and published by . This book was released on 1972 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Real forecast verifications are used to test a Wx-85 conclusion based on synthetic data: namely, that where the climatic frequency of closed terminal weather is as low as found typically in the CONUS, then the present level of forecasting skill for periods of 3 hours or more is of negative value to aircraft operations. The new results confirm the previous conclusion for longer periods but suggest that it is unduly pessimistic with respect to the 3-hour forecast. (Author).
Download or read book Catalogue of Local Forecast Studies written by and published by . This book was released on 1969 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Statewide Travel Forecasting Models written by Alan J. Horowitz and published by Transportation Research Board. This book was released on 2006 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 358: Statewide Travel Forecasting Models examines statewide travel forecasting models designed to address planning needs and provide forecasts for statewide transportation, including passenger vehicle and freight movements. The report explores the types and purposes of models being used, integration of state and urban models, data requirements, computer needs, resources (including time, funding, training, and staff), limitations, and overall benefits. The report includes five case studies, two that focus on passenger components, two on freight components, and one on both passenger and freight.
Download or read book The Use of Trajectories in Terminal Forecasting written by United States. Air Weather Service and published by . This book was released on 1968 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Winter Trajectory Test Program was conducted as part of the AWS Forecaster Assistance Program. The objective of this test was to determine if three-dimensional trajectories derived from the output of the AFGWC Six-level Forecast Model are useful in the preparation of terminal forecasts. Hq AWS personnel used trajectory data to evaluate forecasts prepared at detachments in the central and eastern United States and to modify some of these forecasts. These trajectory data improved the four-month verification of the terminal forecasts by 3.1 percent. Tests were conducted in 1 Wea Wg and 2 Wea Wg and results from these overseas units are discussed. Forecast procedures and the application of objective rules developed during the winter evaluation are described in several case studies.
Download or read book Handbook of Terminal Planning written by Jürgen W. Böse and published by Springer Nature. This book was released on 2020-09-14 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seaport Container Terminals (SCT) operate as central nodes in worldwide hub-and-spoke networks, and link ocean-going vessels with smaller feeder vessels, as well as with inbound and outbound hinterland transportation systems using road, rail, or inland waterways. The volume of transcontinental container flows has gained enormously over the last five decades frequently leading to double-digit annual growth rates for the SCT. The 2nd edition of the Handbook of Terminal Planning also deals with problems being induced by questions of terminal development on a long-term basis (strategic level). Facing present and upcoming challenges for SCT operation—such as more and more mega vessels, extremely high hinterland peaks, higher environmental standards, less public acceptance and the stronger competition between terminals serving the same hinterland—the focus of the book is on successful approaches and solutions primarily addressing the planning of terminal structures. Nevertheless, operational aspects are considered, as well as how they effectively contribute to problem solving on the strategic level.
Download or read book Aviation Weather System Plan written by and published by . This book was released on with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Job Forecasting written by United States. Congress. House. Committee on Science and Technology. Subcommittee on Investigations and Oversight and published by . This book was released on 1983 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1959 with total page 2106 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.
