1. Forum
  2. FidoNet
  3. EARTH

  • ES Picture of the Day 13 2022

    From Dan Richter@1:317/3 to All on Thu Jan 13 11:01:08 2022
    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.


    Double Rainbow Sunset Over Italy

    January 13, 2022

    Rainbow

    Photographer: Riccardo Rossi

    Summary Authors: Riccardo Rossi; Cadan Cummings

    This vibrant photo of a double rainbow was taken following a
    rainstorm on September 26, 2021, near Soliera, Italy. For a double
    rainbow to form, specific atmospheric conditions must be present that
    include larger water droplets suspended in the air. These large
    droplets are necessary for a double reflection to occur. When
    viewing a double rainbow, take note of how the secondary rainbow is
    much fainter and the colors are reversed compared to the primary
    rainbow. If you are looking to spot a rainbow, always look at the point
    in the sky exactly opposite the solar disk, also called the
    antisolar point. Interestingly, the rainbow shown in the photo is a
    perfect half circle- as opposed to an arc- because the Sun was setting
    exactly behind me in that moment.

    Photo details: Nikon D90 + AF-S NIKKOR 14-24mm f/2.8G ED, 14mm, 1/30
    second exposure, f/2.8, ISO-200 (5 photos merged)
    * Soliera, Province of Modena, Italy Coordinates: 44.74869, 10.9493

    Related EPODs

    Double Rainbow Sunset Over Italy Solar Halos and Pillars
    Observed Over Germany Belt of Venus Viewed from Sicily, Italy
    Heiligenschein and Anticrepuscular Rays Multiple Lunar Halos
    and Stary Night Sky Zodiacal Light Observed Around the World
    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 5 weeks, 4 days, 20 hours, 43 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Tue Sep 13 12:01:08 2022
    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.


    iridescent Pileus Cloud Observed from Ashburn, Virginia

    September 13, 2022

    Lindsay_IMG_5010 (004)

    Photographer: Linsday Hank

    Summary Author: Lindsay Hank; Jim Foster

    The photo above showing a particularly colorful, pileus type cloud
    was taken from Ashburn, Virginia, as a thunderstorm approached just
    before 7:00 p.m. local time on August 9, 2022. The camera was facing
    west, in the opposite direction a rainbow would be seen. Though the
    pileus itself is mostly hidden by the darker storm clouds, the
    iridescent colors help to reveal it.

    In thunderstorm updrafts, rapidly rising air into a very humid
    layer may form a silky looking, rounded cloud, called a pileus cloud.
    If the cloud is in the vicinity of the Sun, and if the cloud
    droplets are similarly sized, then diffraction of sunlight will
    produce iridescence. Note that the colors typically observed aren't as
    attention getting as seen here. Always take care to protect your eyes
    when looking anywhere near the Sun.


    Ashburn, Virginia Coordinates: 39.0438, -77.4874


    Related EPODs

    iridescent Pileus Cloud Observed from Ashburn, Virginia
    Twilight Comparison at Curitiba, Brazil, Before and Post Eruption
    of Hunga Tonga Pollen and Flying Seeds Volcanic Sunsets
    Observed from Mutare, Zimbabwe in 2022 Distortion of the Setting
    Moon and Lower Mock Mirage Fogbow Observed from the Ground and from
    a Tower
    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 28 weeks, 1 day, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)
  • From Dan Richter@1:317/3 to All on Tue Dec 13 11:01:02 2022
    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.


    Twinned Rainbow

    December 13, 2022


    Doblearcojpg

    Photographer: Facundo Jauri
    Summary Author: Facundo Jauri

    The rainbow panorama above, composed of 4 photos, was captured over
    Quilmes, Buenos Aires. It was taken looking east at 17:29 (local time)
    on September 22, 2022. Notice how this bow appears to split along the
    highest portion of the arch, creating a different rainbow but with the
    same color pattern as the primary rainbow, unlike a normal double
    rainbow where the secondary outer bow has a reverse color pattern
    than the primary bow. This is known as a twinned rainbow. It's not
    known for certain just how these bows form, but model simulations
    suggest that rain showers having slightly different shaped and sized
    raindrops (spherical and oblate, for instance) could explain their
    formation.

    Photo details: Canon 6D camera; Canon lens 50 mm; f/8; 1/4000 exposure;
    ISO 800; stitched and processed in Photoshop.


    Quilmes, Buenos Aires Coordinates: -34.72441, -58.26049


    Related EPODs

    Twinned Rainbow Double Cloud Shadow off the Coast of Croatia
    Dust Devils on a Dry Lakebed Moondog and Etna Lava Flow Two
    Types of Bewildering Sunset Mirages Meteors from Fragments of Chang
    Zheng 2F Rocket Launch
    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 41 weeks, 1 day, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)