New MeteoSat

First Picture of MeteoSat 3rd Generation. Full Earth from geosationary orbit. Source ESA

MeteoSat Weather satellites 3rd Generation are stabilized by three gyrating momentum-wheels orientated to the three directions in space. The precursor MeteoSats, 1rd and 2rd generation were stabilized by their own spin. With the new three-axle stabilization the instruments of weather satellite are pointed to Earth more exactly and for a longer time, most likely even to the end of orbit time.

MeteoSat 3rd Generation have a Flexible Combined Imager for visible and infrared channels (inclusive some additional ones) with better spatial resolution compared to old weather satellites.

Jens Christian Heuer

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Jetstream


Nice Animation of a Jetstream Source: NASA – GISS

Jetstreams are driven by atmospherical differences in temperature and thus in air pressure. There are horizontal gradients in air-temperature of atmosphere, for example between polar regions and mid latitudes, but there are also vertical gradients leading to convection and to cloud formation if air moisture is sufficient.

A Jetstream forms Rossby waves, troughs and ridges traveling streamwise and also eddies, the weather-making high and low pressure systems. These eddies arise from turbulences in jetstream like the vortexes of a raging river do.

Jens Christian Heuer

A nice animation:

BEST

Land temperatures from 1750-2000.  The shaded regions show the statistical uncertainties. Prior land results from the other research groups are also plotted.

An IPCC-independent study, the Berkely Earth Surface Temperature (BEST) has confirmed global warming! The research team analyzed land-surface temperature data from 36000 meteorological stations going back to 250 years where it was possible, about 100 years further than previous studies. Temperatures have rised in 2/3 of the stations, 1/3 indicated a cooling. The Urban heat island effect, a frequently cited argument of the so called climate skeptics is negligible and gives no explanation about.

Jens Christian Heuer

Source: http://berkeleyearth.org/