Slayt 1 - RTC, Regional Training Centre - Turkey

5 Major Steps in the Production of an NWP ModelObservations All models require obs from an area larger than their forecast domain Forecasts longer than 2-3 days require global data sets Global Telecommunications System (GTS) gathers and disseminates conventional data tonearly all countriesAnalysis Objective analysis – obs checked for errors and interpolated to grid on which modelatmosphere is representedInitialization Adjusts the analyzed data so that the model and data are dynamically consistent Ensures no “noise” is generated when forecast beginsForecast System of forecast eqns marched forward in time until desired forecast length is reachedOutput Forecast maps produced and sent to users, including computations of many quantities notdirectly forecast by the model Forecasts verified to document model errors and biases in order to formulateimprovements in the future.