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Fr 27.11 12 GMT
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Height/Temp. 700 hPa EURO4 Model


Euro4: Global weather forecast model from the "UK MetOffice, North Atlantic European Model"

4 times per day, from 0:00, 05:00, 11:00 and 17:00 UTC
Greenwich Mean Time:
12:00 UTC = 12:00 GMT
0.11° x 0.11°
Geopotential height Temperature at 700 hPa
Geopotential height at 700 hPa (solid line)
Temperature at 700 hPa (colored, dashed)

The maps show the predominant tropospheric waves (trough or ridge). They virtually control the ''weather'' (dry, warm / wet, cold) and the long waves drive the smaller synoptic waves. Thus, this upper-level chart illustrates the dynamics of our atmosphere.
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, of Feb. 9, 2010, 20:50 UTC).
Height/Temp. 700 hPa EURO4 Fr 27.11.2015 12 GMT
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