Ensemble forecast charts of several different numerical weather
prediction (NWP) models |Updated:||2 times per day, from 05:00
and 17:00 GMT| |Greenwich Mean Time:||12:00 GMT = 12:00 GMT|
|Parameter:||Sea Level Pressure in hPa| |Description:||The
surface chart (also known as surface synoptic chart) presents
the distribution of the atmospheric pressure observed at any
given station on the earth's surface reduced to sea level. You
can read the positions of the controlling weather features
(highs, lows, ridges or troughs) from the distribution of the
isobars (lines of equal sea level pressure). The isobars define
the pressure field. The pressure field is the dominating player
in the weather system. Additionally, this map helps you to
identify synoptic-scale waves and gives you a first estimate on
meso-scale fronts.| is a numerical prediction method that is
used to attempt to generate a representative sample of the
possible future states of a dynamical system. Ensemble
forecasting is a form of Monte Carlo analysi