• ES Picture of the Day 03 2023

    From Dan Richter@1:317/3 to All on Tue Jan 3 11:00:30 2023
    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.


    Eyebrow Clouds

    January 03, 2023

    C992C6D7-05E5-4747-8294-BD9B0B7386A1

    Photographer: John Chow
    Summary Authors: John Chow; Jim Foster
    Featured above are eye-catching, eyebrow clouds I observed from Yuen
    Long, Hong Kong, on the morning of November 17, 2022. They’re
    officially known as Eyebrowed Cloud-Supercilium and result from
    turbulence over mountain barriers, tending to form during strong
    winds, in the lee of steep terrain. On occasion, it seems, when a
    mountain wave flows over a line of ridges the wave may act to
    tumble over itself, creating these peculiar-shaped clouds.


    Fung Lok Wai, Yuen Long, Hong Kong Coordinates: 22.4694806, 114.0186507


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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 Dan Richter@1:317/3 to All on Fri Feb 3 11:00:46 2023
    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.


    Wallaman Falls, Australia

    February 03, 2023


    IMG_3863A

    Photographer: Rick Stankiewicz
    Summary Author: Rick Stankiewicz
    The Territory of Queensland in Australia holds many sites to seen, true
    gems worth viewing. Along the northern coast, 110 km (69 mi) north of
    Townsville, is the small town of Ingham, travelling 40 km (25 mi) to
    the west you’ll enter Girringun National Park. It’s here that you
    can find Wallaman Falls, Australia’s highest single-drop waterfall,
    at 268 m (879 ft). The cascading water forms a white ribbon or
    “horsetail,” which is a striking sight against the dark cliff face over
    which it tumbles.

    The falling water has the illusion of vaporizing before entering the 20
    m (66 ft) deep pool below. There is a trail down the floor of the gorge
    across from the base of the falls, but the view from the lookout is
    spectacular. This “ Wet Tropics” region is a UNESCO World
    Heritage Site, and the falls is apparently ranked 294th highest
    single-drop waterfall in the world. The water course it falls from is
    Stony Creek, a tributary of the Herbert River that flows to the
    Coral s Sea. Note that the excessive amount of spray allows for
    rainbows when the sun is directly behind the viewer (pictured above).

    Cassowary sign-IMG_3817A

    While travelling through this area on May 6th, 2014, I didn’t see any
    cassowaries (picture of road sign) or bettong, though this
    region is noted for both. The roads through this impressive national
    park are tight and twisting, but the surface is good enough for most
    vehicles. I recommend the drive if you’re in the area and have the
    time.

    Photo details: Canon XTi camera; 24mm lens; ISO 200; f/10; 1/250^th
    second exposure.

    Wallaman Falls, Queensland, Australia Coordinates: -18.589556,
    145.8052042

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    Hydrology Links

    * Current Sea Surface Temperature
    * NOAA Ocean Explorer Gallery
    * Ocean Color
    * What is hydrology?
    * Tides and Currents
    * Water Resources of the United States
    * World Waterfall Database
    * The USGS Water Science School
    * World Water Database
    * The World’s Water
    * USGS Surface Water Information Pages

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

    https://epod.usra.edu

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  • From Dan Richter@1:317/3 to All on Fri Mar 3 11:00:34 2023
    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.


    Supercell Thunderstorm and Hailstorm in Sampacho, Argentina

    March 03, 2023


    Ariel_epod_supercelda 17-01-2023

    IMG_20230117_200723073

    Photographer: Ariel Trepin

    Summary Authors: Ariel Trepin;

    Several weeks ago, a vicious hailstorm occurred near the town of
    Sampacho, in Cordoba, Argentina. The hail formed withing a
    supercell thunderstorm, a type of severe thunderstorm with a
    deep rotating updraft. These are the storms most often associated
    with hail stones and tornadic weather. Individual stones from this
    storm were slightly larger than marbles. Photo taken on January 17,
    2023.


    Sampacho, Argentina Coordinates: -33.3847, -64.7231


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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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