Weather overview
On the official Youtube channel of EUMETSAT there is an animated visualisation of global weather during from December 2014-March 2015, using imagery from the geostationary satellites of EUMETSAT, NOAA and JMA.
Such a broad view of weather can give an insight into the synoptic or global scale processes that are the triggers for the local weather events on every point of Earth. For instance, one can observe diurnal convective activity all along the line of ITCZ and see how this convection becomes almost a wave pattern connected to the Sun’s illumination circle. Moving away from equator an easterly flow in the subtropics and a westerly flow in mid-latitude can be observed. These are divided by the subtropical jet. The Polar jet, positioned at the border of polar airmass, is not directly visible with this particular selection of satellite channels, but it’s position could be revealed if focusing on the genesis and movement of the synoptic systems. As well as big-scale dynamics, smaller features are visible in this animation (e.g. tropical cyclones – pay attention to the westernIndian Ocean at the end of January).
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