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"url": "https://svs.gsfc.nasa.gov/12684/",
"page_type": "Produced Video",
"title": "Earth Expedition: Studying Wildfires in a Warming Arctic",
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"release_date": "2017-08-15T16:00:00-04:00",
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"alt_text": "Music: Suspended Beauty by Laurent Dury [SACEM]Complete transcript available.",
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"url": "https://svs.gsfc.nasa.gov/12685/",
"page_type": "Produced Video",
"title": "Earth Expedition: Taking in Some Arctic Air",
"description": "Last week, NASA's DC-8 plane flew over Alaska and Canada, measuring carbon dioxide and methane in the Arctic air. The plane carried five instruments to make these measurements for the Active Sensing of Carbon dioxide Emissions over Nights, Days and Seasons (ASCENDS) experiment.All part of NASA's Arctic Boreal Vulnerability Experiment (ABoVE), the science team is studying how the Arctic is changing in a warming climate. || ",
"release_date": "2017-08-15T16:00:00-04:00",
"update_date": "2023-05-03T13:47:27.121587-04:00",
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"alt_text": "Music: Ellipsis by Ben Niblett [PRS], Jon Cotton [PRS]Complete transcript available.",
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"id": 12682,
"url": "https://svs.gsfc.nasa.gov/12682/",
"page_type": "Produced Video",
"title": "Earth Expedition: Flying Over a Greening Arctic Tundra",
"description": "NASA researchers are flying over Alaska and Canada, studying the effects of a greening Arctic.Permafrost, the continuously frozen layer of soil under the Arctic region is thawing as the climate warms up. In the tundra regions, shrubs and soil bacteria are in a race to take advantage of these changing conditions.Shrubs grow where thawing permafrost produces water and carbon dioxide, while underground, the same thawing permafrost exposes organic material that’s been frozen for thousands of years, a feast for soil bacteria.Although the new vegetation absorbs some carbon dioxide from the region, the invigorated bacteria produce both carbon dioxide and methane. From NASA’s DC-8 plane, researchers with the Arctic Boreal Vulnerability Experiment (ABoVE) are measuring how much carbon dioxide is being released by the Arctic’s greening tundra, acting as referees in the carbon race between plants and soil bacteria. || ",
"release_date": "2017-08-10T15:00:00-04:00",
"update_date": "2023-05-03T13:47:28.352304-04:00",
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"alt_text": "NASA research flights, part of the Active Sensing of Carbon Dioxide Emissions over Nights, Days and Seasons (ASCENDS) campaign are studying the region’s continued carbon dioxide output.Music: Across the Plains by Carolina Vanessa James [PRS], Daniel James [PRS]Complete transcript available.",
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{
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"title": "Earth Expedition: Spiraling Above Canada to Measure Carbon",
"description": "High above Alaska and Canada, researchers from NASA’s Arctic Boreal Vulnerability Experiment (ABoVE) are studying carbon emissions from a DC-8 plane. The plane carries new lidar instruments to measure concentrations of carbon dioxide and methane in the air, far below the aircraft. The plane also carries instruments that can measure carbon concentrations with extreme accuracy, but only from up-close.To check the accuracy of the lidar measurements, the team needs to fly the plane down to the lower altitudes the lidar is studying. Taking measurements at every altitude is no easy feat. The plane flies in looping spirals down to just about 100 feet above the ground, and then spirals back up to about 30,000 feet, taking measurements the whole time. || ",
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"alt_text": "Music: Fading Flower by Laurent Dury [SACEM]Complete transcript available.",
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{
"id": 12351,
"url": "https://svs.gsfc.nasa.gov/12351/",
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"title": "ABoVE campaign videos",
"description": "The Arctic Boreal and Vulnerability Experiment (ABoVE) covers 2.5 million square miles of tundra, forests, permafrost and lakes in Alaska and Northwestern Canada. ABoVE scientists are using satellites and aircraft to study this formidable terrain as it changes in a warming climate. Remote sensing by itself is not enough to understand the whole picture, so teams of researchers will go out into the field to gather data. With support from NASA’s Terrestrial Ecology Program, ABoVE researchers investigate questions about the role of climate in wildfires, thawing permafrost, wildlife migration habits, insect outbreaks and more. || ",
"release_date": "2016-08-26T13:00:00-04:00",
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"alt_text": "Bubbles, bubbles, and more bubbles, in a steady stream. Many lakes in the boreal regions of Alaska are emitting methane, the product of decomposing organic matter left over from the Ice Age. Thawing permafrost has caused areas of land to slump and fill up with water, creating these bodies of water called thermokarst lakes. The water then exacerbates the thawing, expanding the size of the lake and producing even more methane. In the early cold season, ice covers the lakes and traps methane in large pockets just beneath the surface. University of Alaska Fairbanks scientists working as part of NASA’s Arctic boreal Vulnerability Experiment (ABoVE) find and measure the methane gas in these pockets seep-by-seep and lake-by-lake. ABoVE combines precise methane measurements from individual lakes with satellite data that can monitor lakes like these across the Arctic, to accurately model how much methane sub-lake seeps are adding to the atmosphere. For more on the bubbling lakes: https://blogs.nasa.gov/earthexpeditions/2016/08/23/mapping-methane-in-a-bubbling-arctic-lake/Complete transcript available.",
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