• MODIS Pic of the Day 01 August 2022

    From Dan Richter@1:317/3 to All on Monday, August 01, 2022 12:00:42
    August 1, 2022 - Clouds off Peru

    Clouds off Peru
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    On July 29,2022, the Moderate Resolution Imaging Spectroradiometer
    (MODIS) on board NASA’s Terra satellite acquired a true-color image of
    lacy patterns in the clouds off the west coast of Peru.

    Marine stratocumulus clouds frequently form over the Pacific Ocean near
    the coast of Peru and Chile, especially during austral winter (June
    through August). The lacy patterns are created by closed-cell clouds,
    while and open-celled clouds help form a more solid-appearing, puffy,
    blanket of cloud. The main difference between the two cloud types
    relates to the flow of air. Moist, warm air rises in the center of
    closed cells and sinks around the edges. Open-cell clouds have air
    sinking in the center of cells and rising along the edges. In both
    cases, clouds form when parcels of warm air rise, expand, and cool
    enough for water vapor to condense into liquid droplets.

    Another difference between these two types of marine stratocumulus
    clouds is precipitation. Uninterrupted decks of closed-cell clouds
    generally produce little to no rain, whereas open cells tend to occur
    as light rain begins to fall.

    Image Facts
    Satellite: Terra
    Date Acquired: 7/29/2022
    Resolutions: 1km (3.2 MB), 500m (8.7 MB), 250m (19.2 MB)
    Bands Used: 1,4,3
    Image Credit: MODIS Land Rapid Response Team, NASA GSFC



    https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2022-08-01

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