Wind 850 hPa ECMWF Model

Model:

Ververst:

4 times per day, from 06:00, 12:00, 18:00 and 00:00 UTC

Copyright:

This service is based on data and products of the European Centre for Medium-Range Weather Forecasts (ECMWF)
Source: https://www.ecmwf.int

Licence Statement:

This ECMWF data is published under a Creative Commons Attribution 4.0 International (CC BY 4.0).
Link: https://creativecommons.org/licenses/by/4.0/

The maps produced by WeatherOnline are subject to the Terms and Conditions.

Disclaimer:

ECMWF does not accept any liability whatsoever for any error or omission in the data, their availability, or for any loss or damage arising from their use.

Greenwich Mean Time:

12:00 UTC = 13:00 MET

Resolutie:

0.4° x 0.4°

Parameter:

Windvector op 850 hPa

Beschrijving:

In deze kaart is voor elk modelroosterpunt (om de ca. 80km) de berekende windvector voor de wind op 850 hPa getekend. Dit is omgerekend naar zeeniveau een hoogte van ca. 1500 m. Hoe hoog het niveau exact ligt is af te leiden uit de "HT850hPa" De kaart is heel goed bruikbaar voor parasailing, zweefvliegen en vliegeren, zeker als het startpunt beneden het 850-hPa-vlak ligt. (wind-calculator)

NWP:

Numerical weather prediction uses current weather conditions as input into mathematical models of the atmosphere to predict the weather. Although the first efforts to accomplish this were done in the 1920s, it wasn't until the advent of the computer and computer simulation that it was feasible to do in real-time. Manipulating the huge datasets and performing the complex calculations necessary to do this on a resolution fine enough to make the results useful requires the use of some of the most powerful supercomputers in the world. A number of forecast models, both global and regional in scale, are run to help create forecasts for nations worldwide. Use of model ensemble forecasts helps to define the forecast uncertainty and extend weather forecasting farther into the future than would otherwise be possible.

Wikipedia, Numerical weather prediction, http://en.wikipedia.org/wiki/Numerical_weather_prediction(as of Feb. 9, 2010, 20:50 UTC).