How NASA Decodes the Secrets of the Arctic

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  • 
    ID: 14257 Produced Video

    Methane Emissions from Wetlands

    Dec. 14th, 2022
    (updated May 3rd, 2023)

    Complete transcript available.Methane is an important greenhouse gas that contributes substantially to global warming. On a molecule by molecule basis, methane is much more efficient at trapping heat than carbon dioxide, the main driver of warming. Though human activities, including agriculture, oil and natural gas production and use, and waste disposal, collectively contribute the majority of methane to the atmosphere, about a third of total methane emissions comes from wetlands. Wetland habitats are filled with things like waterlogged soils and permafrost, which makes them sizable carbon sinks. However, as the climate changes, these carbon-rich soils are vulnerable to flooding and to rising temperatures, which can release more carbon to the atmosphere in the form of methane. Understanding methane emissions from natural sources like wetlands is critically important to scientists and policymakers who are working to ensure that changes in natural systems don’t counteract progress in combatting climate change made by reducing emissions from human activities.This animation shows estimates of wetland methane emissions produced by the Lund–Potsdam–Jena Dynamic Global Vegetation Model (LPJ-DGVM) Wald Schnee und Landscaft version (LPJ-wsl). LPJ-wsl is a prognostic model, meaning that it can be used to simulate future changes in wetland emissions and independently verified with remote sensing data products. The model includes a complex, topography dependent model of near surface hydrology, and a permafrost and dynamic snow model, allowing it to produce realistic distributions of inundated areas. Highlighted areas show concentrated methane sources from tropical and high latitude ecosystems. The LPJ-wsl model is regularly used in conjunction with NASA’s GEOS model to simulate the impact of wetlands and other methane sources on atmospheric methane concentrations, compare against satellite and airborne data, and to improve understanding and prediction of wetland emissions. Music credit: “Emerging Wave” from Universal Production Music ||

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  • 
    ID: 14222 B-Roll

    ABoVE Summer 2022 B-Roll

    Oct. 10th, 2022
    (updated May 3rd, 2023)

    The Arctic Boreal Vulnerability Experiment, or ABoVE, is a NASA-led, 10-year field experiment designed to better understand the ecological and social consequences of environmental change in one of the most rapidly changing regions on Earth. Satellite, airborne, and ground observations across Alaska and Canada will help us better understand the local and regional effects of changing forests, permafrost, and ecosystems – and how these changes could ultimately affect people and places beyond the Arctic. These videos were filmed during the summer 2022 field campaign in Fairbanks, Alaska. ||

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    ID: 5043 Visualization

    Methane Emissions over Canada and Alaska in the 2018

    Nov. 2nd, 2022
    (updated Aug. 25th, 2023)

    This 3D volumetric visualization shows the emission and transport of atmospheric methane over Canada and Alaska in September 2018 with the date and colorbar. || Methane is a powerful greenhouse gas that traps heat 28 times more effectively than carbon dioxide over a 100-year timescale. Concentrations of methane have increased by more than 150% since industrial activities and intensive agriculture began. After carbon dioxide, methane is responsible for about 23% of climate change in the twentieth century. Methane is produced under conditions where little to no oxygen is available. About 30% of methane emissions are produced by wetlands, including ponds, lakes and rivers. Another 20% is produced by agriculture, due to a combination of livestock, waste management and rice cultivation. Activities related to oil, gas, and coal extraction release an additional 30%. The remainder of methane emissions come from minor sources such as wildfire, biomass burning, permafrost, termites, dams, and the ocean. Scientists around the world are working to better understand the budget of methane with the ultimate goals of reducing greenhouse gas emissions and improving prediction of environmental change. For additional information, see the Global Methane Budget.The NASA SVS visualization presented here shows the complex patterns of methane emissions produced over Canada and Alaska during the summer of 2018. The visualization was created using output from the Global Modeling and Assimilation Office, GMAO, GEOS modeling system, developed and maintained by scientists at NASA. Wetland emissions were estimated by the LPJ-wsl model, which simulates the temperature and moisture dependent methane emission processes using a variety of satellite data to determine what parts of the globe are covered by wetlands. Other methane emission sources come from inventories of human activity. The height of Earth’s atmosphere and topography have been vertically exaggerated and appear approximately 50-times higher than normal in order to show the complexity of the atmospheric flow.Emissions reflect a mix of agricultural and industrial activities. Emissions are transported through the atmosphere as weather systems move and mix methane around the globe. In the atmosphere, methane is eventually removed by reactive gases that convert it to carbon dioxide. Understanding the three-dimensional distribution of methane is important for NASA scientists planning observations that sample the atmosphere. Aircraft, like those launched during NASA’s Arctic Boreal Vulnerability Experiment (ABOVE) sample the atmosphere along very specific flight lines, providing additional details about the processes controlling methane emissions at high latitudes. Atmospheric models help place these measurements in context so that scientists can refine estimates of sources and sinks, understand the processes controlling them and reduce uncertainty in future projections of carbon-climate feedbacks. ||

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  • 
    ID: 4877 Visualization

    Ecological insights from three decades of animal movement tracking across a changing Arctic

    April 5th, 2021
    (updated June 22nd, 2023)

    Animal movement tracking across the arctic on top of seasonal natural phenomena like changing vegetation, snow (white), and sea ice (light purple).This video is also available on our YouTube channel. || The Arctic Animal Movement Archive (AAMA) is a new and growing collection of studies describing movements of animals in and near the Arctic. The AAMA includes millions of locations of thousands of animals over more than three decades, recorded by hundreds of scientists and institutions. By compiling these data, the AAMA supports public data discovery, preserves fundamental baseline data for the future, and facilitates efficient, collaborative data analysis. We have used the AAMA to document climatic influences on the migration phenology of golden eagles, geographic differences in the adaptive response of caribou reproductive phenology to climate change, species-specific changes in terrestrial mammal movement rates in response to increasing temperature, and the utility of animal-borne sensors as proxies for ambient air temperature. The AAMA is a living archive that can be used to uncover other such changes, investigate their causes and consequences, and recognize larger ecosystem changes taking place in the Arctic. These visualizations show AAMA animal location data. Some of the visualizations collpase the years down as if all of the data were from the same year; others show the data with the years passing. Several different groupings of animals are shown: marine mammals, raptors, seabirds, shorebirds, terrestrial mammals, and waterbirds. Snow and sea ice are also shown for context as they correlate to animal movements.Citation: Ecological insights from three decades of animal movement tracking across a changing Arctic. S.C. Davidson, et al. Science 06 Nov 2020: Vol. 370, Issue 6517, pp. 712-715 DOI: 10.1126/science.abb7080Data citation: The Arctic Animal Movement Archive (AAMA) is a collection of studies that contain animal movement and other animal-borne sensor data from the Arctic and Subarctic, owned by hundreds of participating experts and organizations. As of November 2020, this collection includes 214 studies that contain over 43 million locations of over 12,000 animals recorded from 1988 to the present. Initial development of the AAMA was funded by NASA's Arctic-Boreal Vulnerability Experiment. The AAMA is hosted on Movebank, a free, global research platform for animal movement and animal-borne sensor data. Long-term support for the storage and curation of the AAMA in Movebank comes from the Max Planck Institute of Animal Behavior. Visit the archive to learn more and find out how to participate. NASA Media: https://www.nasa.gov/feature/goddard/2020/arctic-animals-movement-patterns-are-shifting-in-different-ways-as-the-climate-changesAGU iPoster: https://agu2020fallmeeting-agu.ipostersessions.com/Default.aspx?s=1C-9F-40-11-B3-77-C2-50-6F-F3-B1-3B-60-B4-93-5E#AGU Hyperwall Talk: [placeholder] ||

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  • 
    ID: 4789 Visualization

    Global Atmospheric Methane

    March 23rd, 2020
    (updated Aug. 25th, 2023)

    This first 3D volumetric visualization focuses on several continents showing the emission and transport of atmospheric methane around the globe between January 1, 2017 and November 30, 2018. This video is also available on our YouTube channel. || Methane is a powerful greenhouse gas that traps heat 28 times more effectively than carbon dioxide over a 100-year timescale. Concentrations of methane have increased by more than 150% since industrial activities and intensive agriculture began. After carbon dioxide, methane is responsible for about 20% of climate change in the twentieth century. Methane is produced under conditions where little to no oxygen is available. About 30% of methane emissions are produced by wetlands, including ponds, lakes and rivers. Another 20% is produced by agriculture, due to a combination of livestock, waste management and rice cultivation. Activities related to oil, gas, and coal extraction release an additional 30%. The remainder of methane emissions come from minor sources such as wildfire, biomass burning, permafrost, termites, dams, and the ocean. Scientists around the world are working to better understand the budget of methane with the ultimate goals of reducing greenhouse gas emissions and improving prediction of environmental change. For additional information, see the Global Methane Budget.The NASA SVS visualization presented here shows the complex patterns of methane emissions produced around the globe and throughout the year from the different sources described above. The visualization was created using output from the Global Modeling and Assimilation Office, GMAO, GEOS modeling system, developed and maintained by scientists at NASA. Wetland emissions were estimated by the LPJ-wsl model, which simulates the temperature and moisture dependent methane emission processes using a variety of satellite data to determine what parts of the globe are covered by wetlands. Other methane emission sources come from inventories of human activity. The height of Earth’s atmosphere and topography have been vertically exaggerated and appear approximately 50-times higher than normal in order to show the complexity of the atmospheric flow. As the visualization progresses, outflow from different source regions is highlighted. For example, high methane concentrations over South America are driven by wetland emissions while over Asia, emissions reflect a mix of agricultural and industrial activities. Emissions are transported through the atmosphere as weather systems move and mix methane around the globe. In the atmosphere, methane is eventually removed by reactive gases that convert it to carbon dioxide. Understanding the three-dimensional distribution of methane is important for NASA scientists planning observations that sample the atmosphere in very different ways. Satellites like GeoCarb, a planned geostationary mission to observe both carbon dioxide and methane, look down from space and will estimate the total number of methane molecules in a column of air. Aircraft, like those launched during NASA’s Arctic Boreal Vulnerability Experiment (ABOVE) sample the atmosphere along very specific flight lines, providing additional details about the processes controlling methane emissions at high latitudes. Atmospheric models help place these different types of measurements in context so that scientists can refine estimates of sources and sinks, understand the processes controlling them and reduce uncertainty in future projections of carbon-climate feedbacks. ||

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  • 
    ID: 13554 Produced Video

    NASA Explorers | Season One: Cryosphere

    Dec. 19th, 2018
    (updated May 3rd, 2023)

    Music: Very Fast Swing by Claude Salmieri and Fabien Colella Complete transcript available. ||

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  • 
    ID: 12351 Produced Video

    ABoVE campaign videos

    Aug. 26th, 2016
    (updated May 3rd, 2023)

    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. ||

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