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            "id": 4683,
            "url": "https://svs.gsfc.nasa.gov/4683/",
            "result_type": "Visualization",
            "release_date": "2018-10-10T00:00:00-04:00",
            "title": "NASA Scientists see Gravity Waves in Concentric Rings",
            "description": "NASA scientists have tracked gravity waves traveling thousands of miles across our atmosphere in concentric rings. Large storms can create these waves, which grow and spread upward hundreds of miles above Earth's surface. The AIRS instrument on NASA's Aqua satellite detected gravity waves in the troposphere and stratosphere 12 hours before a deadly EF5 tornado in Moore, Oklahoma, in 2013.  On the instrument's next pass 11 hours later, it detected even stronger waves.We pull up 250 miles to the ionosphere, where the waves can be observed by GPS satellites. Here gravity waves are shown in greens and yellows, like ripples in a pond.  The waves and tornado were both produced by a long-lived storm system.Understanding the spread of gravity waves improves global weather forecasting and space weather forecasting.Complete transcript available.This video is also available on our YouTube channel. || GravityWavesBeforeAfterMooreTornado_0740_print.jpg (1024x576) [131.1 KB] || GravityWavesBeforeAfterMooreTornado_0740_searchweb.png (320x180) [102.9 KB] || GravityWavesBeforeAfterMooreTornado_0740_thm.png (80x40) [8.3 KB] || GravityWavesBeforeAfterMooreTornado_0740.tif (1920x1080) [3.2 MB] || GravityWavesMooreOK-SameWordsDifferentOrder.webm (1920x1080) [7.4 MB] || GWfacebook-AIRS-TEC-GOES-4k-audio.mp4 (1920x1080) [76.1 MB] || GravityWavesMooreOK-SameWordsDifferentOrder.mp4 (1920x1080) [117.1 MB] || composite (3849x2160) [0 Item(s)] || GW4k-AIRS-TEC-GOES-4k-audio-youtube.en_US.srt [1.2 KB] || GW4k-AIRS-TEC-GOES-4k-audio-youtube.en_US.vtt [1.2 KB] || GW4k-AIRS-TEC-GOES-4k-audio-youtube.mp4 (3840x2160) [240.0 MB] || GWfacebook-AIRS-TEC-GOES-4k-audio.mp4.hwshow [199 bytes] || ",
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            "id": 11451,
            "url": "https://svs.gsfc.nasa.gov/11451/",
            "result_type": "Produced Video",
            "release_date": "2014-02-18T00:00:00-05:00",
            "title": "The Big Chill",
            "description": "A persistent pattern of winds spins high above the Arctic in winter. The winds, known as the polar vortex, typically blow in a fairly tight circular formation. But in late December 2013 and early January 2014, the winds loosened and frigid Arctic air spilled farther south than usual, deep into the continental United States. On Jan. 6, 2014, alone, approximately 50 daily record low temperatures were set, from Colorado to Alabama to New York, according to the National Weather Service. In some places temperatures were 40 degrees Fahrenheit colder than average. Now, an animation created from NASA satellite data shows just how the Arctic air brought a deep chill to the U.S this winter. Watch the video for a guided tour of the event. || ",
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