Protégé : The role of snow in the Indus river basin

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New clear-sky image of the Rasuwa rock-ice avalanche

On 08 Sep 2026, Sentinel-2 acquired a clear-sky image near the release area of the landslide which caused the catastrophic flood in Nepal. Using this image and a pre-event digital elevation model (Berthier 2026) we can analyze the upper part of the avalanche runout profile. The block of rock and ice was released near 5120 […]

How long is the cooling effect of a cloud shadow ?

How long does it take for the cannon barrel to cool down after firing a shell ? Fernand Raynaud => This quote is from a famous old French funny sketch by Fernand Raynaud, which was based on a question in a French manual for soldiers: the sketch is rather long, so I’ll give you the […]

Impact of the August 12, 2026 eclipse on photovoltaic electricity generation in Spain

Photovoltaic (PV) energy supplies more 20% of Spain’s total electricity, and this share hit a new high in July 2026 (28.3% of the nation’s monthly electricity mix). Some media outlets were concerned about the drop in photovoltaic power generation during the 12-Aug-2026 eclipse. Le Monde explained that « the drop is expected to be particularly pronounced […]

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