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    "title": "Ship Tracks Reveal Pollution's Effects on Clouds",
    "description": "NASA's MODIS satellite instrument is revealing that humans may be changing our planet's brightness. Pollution in the atmosphere creates smaller, brighter cloud droplets that reflect more sunlight back to space and may have a slight impact on global warming.This narrated visualization illustrates how we can study the effect against a clean backdrop by looking for zones of pollution in otherwise pristine air - in this case the North Pacific Ocean near the Aleutian islands. On an overcast day, the clouds look uniform. However, MODIS' sesor reveals a different picture - long skinny trails of brighter clouds hidden within. As ships travel across the ocean, pollution in the ships' exhaust create more cloud drops that are smaller in size, resulting in even brighter clouds. On clear days, ships can actually create new clouds. Water vapor condenses around the particles of pollution, forming streamers of clouds as the ships travel on. The ship tracks themselves are too small to impact global temperatures, but they help us understand how larger pollution sources such as industrial sites or agricultural burning might be changing clouds on a larger scale. || ",
    "release_date": "2010-06-03T00:00:00-04:00",
    "update_date": "2023-05-03T13:54:12.874954-04:00",
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            "page_type": "Produced Video",
            "title": "Crisscrossing Clouds",
            "description": "Since 1965 scientists have observed unusual cloud lines that crisscross over the ocean in certain satellite images. Researchers initially speculated that aircraft, missiles, or even natural patterns of air circulation might have caused the oddly shaped clouds to form. But ultimately seafaring ships proved to be the culprits; specifically tiny particles found in the exhaust that billows from their smokestacks. The streaky clouds, called ship tracks, are found throughout the world's oceans. They form in the same manner as marine clouds, which are made of individual cloud droplets created when water condenses around sea salt and other airborne particles known as aerosols. Ship fumes, however, inject extra particles into the air that boost the overall number of particles and cause an abundance of small, more reflective cloud droplets to form. The result: lines of unusually bright and narrow clouds such as those seen in the video below. || ",
            "release_date": "2011-10-25T00:00:00-04:00",
            "update_date": "2023-05-03T13:53:32.163885-04:00",
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}