• ES Picture of the Day 31 2021

    From Black Panther@21:1/186 to All on Sun Jan 31 11:00:34 2021
    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.


    Archive - Satellite Snow Loop

    January 30, 2021

    Sat_loop

    Every weekend we present a notable item from our archives. This EPOD
    was originally published January 27, 2004.

    Referred by: Lee Grenci
    Summary authors & editors: Jim Foster; Lee Grenci

    The satellite loop above shows a mostly snow-covered scene over a
    portion of the northeastern U.S. It was taken during the late morning
    and early afternoon (15:45 - 19:30 UT or 10:45 - 2:30 Eastern Standard
    Time) on March 12, 2001. Notice the cloud deck approaching from the
    southwest during the early afternoon hours. Snow and clouds look
    similar from space, but satellite loops make monitoring and mapping
    snow easier since clouds move and snow doesn't -- unless it's rapidly
    melting. Also, notice that the northeastern portion of Lake Erie is
    still ice-covered but that Lake Ontario (deeper than Lake Erie) is ice
    free. As was mentioned with yesterday's Earth Science Picture of the
    Day, dark splotches surrounded by brighter areas are more densely
    forested regions, such as the Adirondack Mountains of upstate New York
    (upper right). However, the dark north-south streaks in southern New
    York are ice-free Finger Lakes (Seneca Lake at left and Cayuga Lake at
    right).


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    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

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  • From Black Panther@21:1/186 to All on Wed Mar 31 11:00:52 2021
    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.


    A Bountiful Flock of Floccus Clouds

    March 31, 2021

    Ray Floccus Clouds

    Photographer: Ray Boren
    Summary Author: Ray Boren

    On a pleasant day poised between autumn and winter, I strolled out
    of a favorite bookstore in downtown Bountiful, Utah and happened to
    glance upward. Directly overhead was a beautiful, cloud-splashed sky. I
    had parked my car alongside a park-like city block featuring the
    Bountiful Tabernacle, a Greek Revival meetinghouse built by
    Mormon pioneers, which seemed an ideal counterpoint to the speckled
    sky.

    These are apparently altocumulus floccus clouds that looked very
    much like billowy cotton or fleecy puffballs spilling across a blue
    canvas. In meteorology, the Latin term altocumulus refers to high
    and heaped, or massed, globular clouds at a medium altitude of about
    6,500 to 22,000 feet (1,980-6,700 m) in elevation. Floccus
    indicates that they resemble tufts of wool.

    I wondered if this might be a mackerel sky, so-called for a
    fish-scale pattern. Seeking a better understanding, I sent the image to
    the Cloud Appreciation Society with a sheepish query, and a monitor
    there responded that a mackerel pattern is more accurately associated
    with similar Altocumulus undulatus clouds, which have a noticeably
    undulating wave pattern, not obvious here. The World Meteorological
    Organization’s International Cloud Atlas notes that Altocumulus
    floccus clouds sometimes form when the base of a larger, crenelated
    Altocumulus castellans formation dissipates, which is likely what
    happened on this pretty day. Photo taken Nov. 30, 2020.
    * Bountiful, Utah Coordinates: 40.88933, -111.87976

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    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

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  • From joshm998@21:1/121 to Black Panther on Sun May 16 01:07:18 2021
    test


    --- ENiGMA 1/2 v0.0.12-beta (linux; x64; 14.15.4)
    * Origin: Xibalba -+- xibalba.l33t.codes:44510 (21:1/121)
  • From Black Panther@21:1/186 to All on Mon May 31 11:00:32 2021
    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.


    A Lacy Curtain of Stone

    May 31, 2021


    WhitePocketsCompresssionBandViewFromAfarByPhone
    WhitePocketsCompresssionBandAngledPortrait

    Photographer: Stan Wagon

    Summary Author: Stan Wagon

    Shown above is a remarkable lacy formation in the Navajo
    sandstone of Vermillion Cliffs, Arizona. More detail can be seen in
    the bottom photo. Tens of thousands of years ago, a thin (about 3 mm)
    layer of sand here was compressed more than its surroundings. This
    “ compression band” became a very thin curtain-like stone feature,
    less permeable to water and therefore more resistant to erosion.

    Photo details: SONY A6500 camera; 14 mm lens; 1/200 second exposure;
    f13; ISO 250.


    Vermilion Cliffs National Monument, Arizona Coordinates: 36.8625,
    -111.8270


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    Geology Links

    * Earthquakes
    * Geologic Time
    * Geomagnetism
    * General Dictionary of Geology
    * Mineral and Locality Database
    * Mohs Scale of Mineral Hardness
    * This Dynamic Earth
    * USGS
    * USGS Ask a Geologist
    * USGS/NPS Geologic Glossary
    * USGS Volcano Hazards Program

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

    https://epod.usra.edu

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  • From Black Panther@21:1/186 to All on Sat Jul 31 11:00:38 2021
    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.


    Archive - Ridge Line Induced Crepuscular Rays

    July 31, 2021

    6a0105371bb32c970b0134883230c8970c Every weekend we present a
    notable item from our archives. This EPOD was originally published
    October 19, 2010.

    Photographer: Piero Armando

    Summary Author: Piero Armando; Jim Foster

    With a fantastic view of the Italian Alps just to the west of where
    I live, I'm fortunate enough to enjoy many splendid sunsets. The
    photo above lacks the fine colors that results from many such sunsets
    but displays an impressive array of crepuscular rays. Since the sky
    is free of cumulus turrets that often are responsible for rays,
    they must form in another way. In fact, these rays are due to natural
    gaps and prominences along the ridge line as well as the presence of
    dust and haze in the lower atmosphere. These aerosols are very
    effective in scattering sunlight. It's easy to see just where
    sunlight is blocked (spurs) and allowed to stream through (notches).
    Photo taken on September 1, 2010.

    Photo details: Canon EOS 30D camera; manual mode; 1/1000 second
    exposure; F7.1; focal length of 180 mm; image cropped.
    * Turin, Italy Coordinates: 45.066667, 7.7

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    Atmospheric Effects Links

    * Atmospheric Optics
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    * 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

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  • From Black Panther@21:1/186 to All on Fri Dec 31 11:00:46 2021
    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.


    Crescent Moon Over Zsámbék, Hungary

    December 31, 2021

    Moon_211005_abraham

    Photographer: Tamas Abraham

    Summary Author: Tamas Abraham

    This beautiful crescent moon photo was taken just after dawn in
    early October near Zsámbék, Hungary. I woke up early and went into
    the garden while the Sun was still rising. Sirius was twinkling
    bluish and Orion whispered the fact that winter is coming soon.
    Over the eastern horizon, I spotted the waning crescent Moon. The
    transparency was good and the thin Moon was spectacular. I ran into
    the house for my camera and searched for a good place to take some
    photos. Finally, I planned a frame with leaves around the Moon. At the
    time of taking the photo, the Moon was 31 hours before new Moon.

    Photo details: Canon EOS 400D & Pentacon 4/200 telephoto lens, ISO-100,
    f/8, 1/3 second exposure
    * Zsámbék, Hungary Coordinates: 47.5474, 18.7214

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    Night Sky Links

    * Space Weather Live
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    * American Meteor Society
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    * Heavens Above Home Page
    * The International Meteor Organization
    * Lunar and Planetary Institute
    * MoonConnection
    * NASA Eclipse Web Page
    * Understanding The Moon Phases

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

    https://epod.usra.edu

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