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.


Moondogs and Paraselenic Arc

March 24, 2022


MatthewC_moon-photo (003)

Photographer: Matthew Chin
Summary Author: Matthew Chin; Jim Foster
The photo above show the evening sky and the Moon as viewed from Yuen
Long, Hong Kong on December 17, 2021. Faintly colored arcs in the
vicinity of the Moon are annotated. Though it’s not unusual to be able
to see a 22-degree lunar halo, observing moondogs (on both
sides of the Moon) and the paraselenic circle is much more
challenging. The Moon must be bright, near the full phase, in order
to detect these dim arcs. Note that the paraselenic arc passes
through the center of the lunar disk and circles around the sky ---
best seen with a fisheye lens. The bright streak at upper is a jet
contrail.
* Yuen Long, Hong Kong Coordinates: 22.4445, 114.0222

Related EPODs

Moondogs and Paraselenic Arc Crepuscular Rays in the
Philippines and Rainbow Wheel Over Belgium Snow Halo Over Mala
Fatra Mountains Atmospheric Optics Observed in Fog Archive -
Picket Fence Aurora Inferior Mirage In Venetian Lagoon
More...

Atmospheric Effects Links

* Atmospheric Optics
* Optic Picture of Day: Gruppo Astrofili Galileo Galilei
* Color and Light in Nature
* The Colors of Twillight and Sunset
* Refraction Index
* Image Gallery: Atmospheric Effects
* What is a Rainbow?

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

https://epod.usra.edu

--- up 3 weeks, 3 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.


Rainshaft Spotted in New York

May 24, 2022

Rainshaft2

Photographer: Jack Widner

Summary Author: Jack Widner

Shown in the photo above is a rain shaft spotted in August 2016
while driving southwest of Buffalo, New York. This specific cloud
burst was one of several that occurred day, including one east on I-90
near the New York-Pennsylvania border. Rain shafts are a type of
convection storm that have strong centralized updrafts and
downdrafts and produce very localized precipitation.
* Angola, New York Coordinates: 42.638, -79.027

Related EPODs

Rainshaft Spotted in New York Waterspout Over Lake Los Molinos
Dust Cloud Near Shadow Mountain, Nevada Red Jellyfish Sprite
Over Mediterranean Sea Warning! Snow Squall Slices Through Utah
Shelf Mushroom on Cottonwood Tree
More...

Severe Weather Links

* World Severe Weather Information Center
* Enhanced Fujita Scale
* A Lightning Primer
* More About Thunderstorms
* Staying Safe Outdoors in Severe Weather
* NOAA Storm Prediction Center
* Patterns of Lightning Activity
* US National Weather Service

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

https://epod.usra.edu

--- up 12 weeks, 1 day, 20 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.


Eastern Flank of Mt. Etna

August 24, 2022

Epod-etna-bove-02062022

Photographer: Rosario Catania
Summary Author: Rosario Catania
The photo above shows Mt. Etna as seen in its eastern guise, above
its ancient eruptive centers. The majestic Valle del Bove
(foreground) is a wide basin more than 3,280 ft (1,000 m) deep, 3 miles
(5 km) wide and 4 miles (7 km) long. This depression, dating back
between 7 and 10 thousand years, was caused by the collapse of these
eruptive centers.

On the left of the photo, visible in the distance, is the city of
Catania, with the Ionian Sea extending southward, and on the
right is the coast of Calabria (mainland of Italy).

During eruptions over the past 30 years, millions of cubic meters
of lava have poured from this stratovolcano into the Valle del Bove
Bove, which was once rich in vegetation and cultivated fields. Etna, a
natural laboratory par excellence, has been a World Heritage Site
since 2013. Photo taken on June 2, 2022.

Zafferana, Etnea Sicily, Italy Coordinates: 37.6897, 15.1053


Related EPODs

Eastern Flank of Mt. Etna Carachipampa Volcano, Argentina
The Marmolada and the Partial Lunar Eclipse of May 16, 2022
Idaho’s Granitic City of Rocks Dungeness Spit Beach Venus
in Daylight
More...

Geography Links

* Atlapedia Online
* CountryReports
* GPS Visualizer
* Holt Rinehart Winston World Atlas
* Mapping Our World
* Perry-Castañeda Library Map Collection
* Types of Land
* World Mapper

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

https://epod.usra.edu

--- up 25 weeks, 2 days, 21 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)