Visar inlägg med etikett landscape. Visa alla inlägg
Visar inlägg med etikett landscape. Visa alla inlägg

fredag 17 juli 2026

Bright NLC´s

 

Noctilucent clouds are the highest clouds in Earth's atmosphere, forming in the mesosphere about 76 to 85 kilometers (50 miles) above the surface.

Meaning "night-shining" in Latin, they appear as electric-blue, silvery, or glowing wisps during summer deep twilight when they are illuminated by the sun from below the horizon.

Noctilucent clouds (NLCs), also called polar mesospheric clouds (PMCs) when viewed from space, are a tenuous atmospheric phenomenon. Unlike typical weather clouds that form less than 12 miles above Earth, NLCs occur at the very edge of space.How

For noctilucent clouds to form, three precise ingredients are required:

Extremely Low Temperatures: Temperatures in the mesosphere must drop below -120°C to -140°C.Water

Trace amounts of water vapor must be present.

Tiny dust particles are needed, primarily from micrometeors burning up in the atmosphere.

Water vapor freezes onto the meteoric dust to form microscopic ice crystals, which reflect sunlight. Their striking blue color is a result of the ice crystals scattering sunlight in the upper atmosphere.

Noctilucent clouds are a seasonal and latitudinal phenomenon. They occur only during the summer months when the upper atmosphere above the polar regions experiences its coldest temperatures.

Northern Hemisphere: Best viewed between mid-May and mid-August, primarily at mid-to-high latitudes (roughly 45° to 80° North, including northern Europe, Canada, and the northern United States).

Southern Hemisphere: Best viewed between mid-November and mid-February


Photos taken in Vallentuna Sweden 16-17/7 2026.










fredag 14 februari 2014

Poor snowman..

I haven´t seen any clear skies since New Years Eve and my Canon 6D died the same day. But last night I could finally see some stars again with the Moon and Jupiter beside each other. When I walked in the moonlight photographing the moonlit landscape I met this poor snowman all alone looking for the cold and snow but it is all gone I told him! :-(


måndag 3 december 2012

Winter in Stockholm

Winter has arrived in Stockholm with -15 degree C and a lovely snowy landscape.
Härligt tycker jag, hellre det än plus och regn.
Det blir fantastiskt vackert med snön i månljus vilket jag ville fotografera så klart, passa så länge snön ligger kvar så fint på träd och grenar...