Can Weather Forecasters Formulate Reliable Probability Forecasts of Precipitation and Temperatures?1

نویسندگان

  • Allan H. Murphy
  • Robert L. Winkler
چکیده

During the past ten years, many sets of subjective probability forecasts have been formulated on an operational or experimental basis by weather forecasters. In this paper we examine some forecasts prepared recently by National Weather Service forecasters. Samples of precipitation probability forecasts represent an operational program, while samples of probability foreclISts of temperature represent an experimental program, An analysis of these forecasts indicates that weather forecasters can and do formulate reliable probability forecasts of precipitation and temperature.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A fuzzy case-based system for weather prediction

Weather forecasting is a complex process that involves numerous specialized fields of expertise. The output from computationally intensive numerical weather prediction (NWP) models forms the starting point of the forecasting process. Expert forecasters have both a general knowledge of large-scale weather systems and specific knowledge about the idiosyncratic behavior of local scale weather phen...

متن کامل

1 Creation , Evaluation and Implementation of a Precipitation - Type Forecasting System

This COMET proposal describes a two-year project, beginning on 6/1/00, that will create, evaluate, and implement the first precipitation-type probabilistic forecast system, using ensemble forecasting and consensus forecasting concepts, at the Hydrometeorological Prediction Center (HPC) and the Storm Prediction Center (SPC). The research component of this project will evaluate the quality of var...

متن کامل

Object-Based Verification of Precipitation Forecasts. Part I: Methodology and Application to Mesoscale Rain Areas

A recently developed method of defining rain areas for the purpose of verifying precipitation produced by numerical weather prediction models is described. Precipitation objects are defined in both forecasts and observations based on a convolution (smoothing) and thresholding procedure. In an application of the new verification approach, the forecasts produced by the Weather Research and Foreca...

متن کامل

Efficient Testing of Forecasts

Each day a weather forecaster predicts a probability of each type of weather for the next day. After n days, all the predicted probabilities and the real weather data are sent to a test which decides whether to accept the forecaster as possessing predicting power. Consider tests such that forecasters who know the distribution of nature are passed with high probability. Sandroni shows that any s...

متن کامل

A case study carried out with two different NWP systems

A model intercomparison between two atmospheric models, the non–hydrostatic Lokal Modell (LM) and the hydrostatic HIgh Resolution Limited Area Model (HIRLAM) is carried out for a one-week period, including a case of cyclogeneis leading to heavy precipitation over Northern Italy. The two models, very different in terms of data-assimilation and numerics, provide different results in terms of fore...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1977