Nacreous Clouds - take 2
Finally another sighting of those rare nacreous clouds. More on flickr .
Comments
Is this related to the northern light effect?
No, not linked at all. Northern lights are caused by particles from the Sun, while this type of clouds is still unclear what it actually is. NASA just launched a mission to found out more about it (http://en.wikipedia.org/wiki/Aeronomy_of_Ice_in_the_Mesosphere).
Nacreous clouds or mother of pearl clouds will only be seen just after sunset or before sunrise, they form in the stratosphere at heights of between 6-18 miles when the temperature there falls below -80°C and are ‘probably’ composed of ice particles with a liquid coating of nitric acid tri-hydrate. They appear bright because they are high enough to be illuminated by the sun long after local sunset and the pastel colours arise through diffraction or interference effects in much the same way that colours appear in a film of oil on a puddle of water. Aurora borealis (northern lights) & aurora australis is the emissions of photons in the Earth's upper atmosphere & not connected to these clouds formations.
Rob Benedict (UK)
Life Line
Updated a waste_basket
Created 11 benches, 2 life_rings, and 3 other objects; Updated 8 benches and a waste_basket; Deleted a bench and a log; Confirmed a cafe
I walked 7.8km in 1h52m27s
Tomorrow we have elections in the UK!
Lots of local authorities, all London Councils, the Welsh Senedd, and the Scottish Parliament.
Don't forget to vote if you have the right.
I get to vote for myself again 😎.
Benches, and corrections for the QE II Gardens
Addresses on College Road
Created 2 main entrances and an entrance; Updated an entrance, a residential building, and a house building
Created an apartments building and a main entrance
I walked 9.5km in 2h21m10s
Created a waste_basket
I walked 6.6km in 1h13m23s
On my walk from Aylesbury to Princes Risborough I spotted a few new bird species. I didn't get all the best photos though!
A Common Buzzard, a Yellow Wagtail, a Greater White throat, and a Green Woodpecker.
#photography #Birds #BirdPhotogaphy #BirdsOfMastodon #nature #Buckinghamshire
Updated an alcohol shop
I walked 9.4km in 1h58m25s
Updated 2 benches
Created a bench; Updated a bench
I hiked 19.0km in 4h35m50s
I hiked 19.0km in 4h35m50s
I walked 6.8km in 1h15m36s
Updated an estate_agent office
I walked 4.1km in 55m33s
I walked 1.1km in 10m05s
My First Lapwing!
I went to the London Wetland Centre yesterday, for a day out in nature.
While hiding in a hide, this chap and a friend showed up starting to forage for grubs.
#BirdPhotography #BirdsOfMastodon #Photography #Birds #London #Nature
Created a waste_basket; Updated a cafe and a restaurant; Confirmed an estate_agent office
I walked 6.6km in 1h8m53s
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