art, culture, history, landscape, nature, photography, plants, world

Throwback Thursday: Eyjafjallajökull

March 26th, 2010 looking west

Today, this image turns 10. You can see how red the sky is. That’s a result of the series of eruptions of the volcano Eyjafjallajökull in southern Iceland, which started on March 20th. The huge amount of volcanic ashed blasted in the sky during the eruptions forced the aviation to pause for a couple of weeks. The impact was worldwide in the northern hemisphere because of the enormous power of the eruption which brought the ashes to the upper layers of the atmosphere where it could be spread quickly by the jetstreams.

while prop airliners are quite resistant to these ashes, jet engines are at risk to get broken because of the ashes might melt inside the jet engine and dispose of the movable parts of the engine and glaze them over. When this happens the engine is broken and the plane is about to crash.

Btw. when looking at certain paintings by William Turner starting from around 1821 you can notice a very reddish sky. Now it seems, this wasn’t artificial freedom but reality affected by the series of eruptions of Eyjafjallajökull from 1821-1823.

Take care!

 

flowers, nature, photo-of-the-day, photography, plants, seasons, winter, world

Throwback Thursday: blossoms in winter

December 2009: nearly 1 meter of snow in only one night

This morning (while preparing this post for scheduling) I read an article in a news magazine summing up this past winter. The author wrote, the average temperature in Germany was +3.5°C. A winter without winterly weather. During winter 2006/2007 we even had +4.4°C on average in Germany. In Wikipedia, you can find some statistical data on the average temperature during winter even for the last centuries. So, in the period 1761 to 2017, there was an average temperature of  −0,2 °C (1961–1990: 0,2 °C). But, you can also see, that there were some peaks +2,7 °C in 1795/96, +2,3 °C in 1821/22, +2,9 °C in 1833/34  or +2,5 °C in 1868/69. But there were also some negative peaks: −5,0 °C in 1939/40, -3,9 °C in 1941/42, −4,6 °C in 1946/47 or −5,5 °C in 1962/63. You see, varying of average temperatures is normal, but there are some further conditions to consider. How about the amount of rainfall (snowfall) and the physical condition: liquid water drains away quite fast while the snow keeps the soil warm and saves the roots of plants from freezing during icy nights. At the end of the winter the snow cover dews slowly and the soil is able to absorb the water much better to keep it for summer (fill up the groundwater reservoirs).

There are some advantages and many disadvantages. First, plants and animals have more time for growing their descendants (fruits and offsprings). But, vermins also have more time. And, while it is still possible to get some frosty nights ’till April/May, sprouts can grow anew, while blossoms and fruit sets usually can’t be replaced when perished by cold.

Take care!