EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.


Cumulus Clouds with Spikes

December 02, 2022


IMG_0290

IMG_3739

Photographer: Mila Zinkova

Summary Author: Mila Zinkova; Jim Foster

Shown above are curious shaped, cumulus clouds that were observed
from near my home in San Francisco, California, on April 19, 2022. The
spike-like features have horseshoe shapes in some cases, as shown in
the bottom photo. Perhaps these spikes and horseshoes are caused by
convection -- intense localized heating of the most optically
thick portion of cloud by the strong April sun. However, because the
atmospheric environment where the clouds formed wasn't suitable
( stable atmosphere) for widespread building, they remained overall
fairly “flat” in appearance. Click here to see a video of these
clouds.

San Francisco, California Coordinates: 37.7749, -122.4194


Related EPODs

Cumulus Clouds with Spikes Mamattus Observed in Stratus Cloud
Roll and Lenticular Clouds Above Taiwan Moonlit Monte Viso
Cumulonimbus Montage Above Taipei, Taiwan Asperitas Clouds
Observed Above Hong Kong
More...

Cloud Links

* Atmospheric Optics
* The Cloud Appreciation Society
* Cloud Atlas
* Color and Light in Nature

-
Earth Science Picture of the Day is a service of the Universities
Space Research Association.

https://epod.usra.edu

--- up 39 weeks, 5 days, 21 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)

EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.


Emerald Lakes, New Zealand

October 03, 2022


Emerald lake tongariro

Photographer: Steve Kropp
Summary Author: Steve Kropp

This photo shows one of the two Emerald Lakes found near the summit
of Mt Tongariro, New Zealand. Their stunning emerald color is
caused by dissolved minerals that wash down from the surrounding
landscape.

The lakes formed in craters from previous volcanic eruptions. They can
be seen on the Tongariro Alpine Crossing, which is one of the most
popular day walks in New Zealand. This walk passes over the volcanic
terrain of still active volcano Mt Tongariro. It also passes the base
of Mt Ngauruhoe, another active volcano that was used to depict
Mt Doom in The Lord of the Rings film trilogy. Photo taken on
April 16, 2022.
Photo details: Google Pixel 4a; ƒ/1.73; 1/2611; 4.38 mm; ISO 61

Emerald Lakes, New Zealand Coordinates: -39.133314, 175.657835

-
Earth Science Picture of the Day is a service of the Universities
Space Research Association.

https://epod.usra.edu

--- up 31 weeks, 21 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)