{
    "count": 4,
    "next": null,
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    "results": [
        {
            "id": 4100,
            "url": "https://svs.gsfc.nasa.gov/4100/",
            "result_type": "Visualization",
            "release_date": "2013-11-08T11:00:00-05:00",
            "title": "Fluorescence Visualizations in High-Resolution (Comparison to NDVI)",
            "description": "During photosynthesis, plants fluoresce. This faint glow is in the infrared part of the spectrum, not visible to the naked eye but detectable by satellites orbiting hundreds of miles above Earth. NASA scientists established a method to turn this satellite data into global maps of the subtle phenomenon in more detail than ever before.The new maps, released in 2013, provide a 16-fold increase in spatial resolution and a 3-fold increase in temporal resolution over the first proof-of-concept maps released in 2011. This lets scientists use fluorescence to observe, for example, variation in the length of the growing season.These visualizations of the phenomenon shows global land plant fluorescence data collected from 2007 to 2011, combined to depict a single average year. Darker greens indicates regions with little or no fluorescence; lighter greens and white indicate regions of high fluorescence.Fluorescence and Normalized Difference Vegetation Index (NDVI) are compared. A visualization is provided comparing the northern hemisphere of both data sets. Individual visualizations are also provided in a standard cylindrical equidistant projection for wrapping to a globe. The same color bars are used for both data sets for easier comparison. || ",
            "hits": 49
        },
        {
            "id": 11317,
            "url": "https://svs.gsfc.nasa.gov/11317/",
            "result_type": "Produced Video",
            "release_date": "2013-07-24T14:00:00-04:00",
            "title": "Seeing Photosynthesis From Space",
            "description": "NASA scientists have discovered a new way to use satellites to measure what's occurring inside Earth's land plants at a cellular level.During photosynthesis, plants emit what is called fluorescence – a form of light invisible to the naked eye but detectable by satellites orbiting hundreds of miles above Earth. NASA scientists established a method to turn this satellite data into global maps of the subtle phenomenon in more detail than ever before.The new maps – produced by Joanna Joiner of NASA's Goddard Space Flight Center in Greenbelt, Md., and colleagues – provide a 16-fold increase in spatial resolution and a 3-fold increase in temporal resolution over the first proof-of-concept maps released in 2011. Improved global measurements could have implications for farmers interested in early indications of crop stress, and ecologists looking to better understand global vegetation and carbon cycle processes.\"For the first time, we are able to globally map changes in fluorescence over the course of a single month,\" Joiner said. \"This lets us use fluorescence to observe, for example, variation in the length of the growing season.\" || ",
            "hits": 429
        },
        {
            "id": 4086,
            "url": "https://svs.gsfc.nasa.gov/4086/",
            "result_type": "Visualization",
            "release_date": "2013-07-24T13:00:00-04:00",
            "title": "Fluorescence Visualizations in High-Resolution",
            "description": "During photosynthesis, plants emit fluorescence – a form of light invisible to the naked eye but detectable by satellites orbiting hundreds of miles above Earth. NASA scientists established a method to turn this satellite data into global maps of the subtle phenomenon in more detail than ever before. The new maps, released in 2013, provide a 16-fold increase in spatial resolution and a 3-fold increase in temporal resolution over the first proof-of-concept maps released in 2011. This lets scientists use fluorescence to observe, for example, variation in the length of the growing season.A visualization of the phenomenon shows global land plant fluorescence data collected from 2007 to 2011, combined to depict a single average year. Gray indicates regions with little or no fluorescence; red, pink and white indicate regions of high fluorescence. || ",
            "hits": 51
        },
        {
            "id": 3580,
            "url": "https://svs.gsfc.nasa.gov/3580/",
            "result_type": "Visualization",
            "release_date": "2009-05-28T12:00:00-04:00",
            "title": "Stresses on Global Phytoplankton Revealed by MODIS",
            "description": "All plants absorb energy from the sun, typically more than the plant can consume through the process of photosynthesis. The extra energy is mostly released as heat as the plants respirate oxygen and water vapor. But a fraction of that energy is re-emitted as fluorescent light, particularly in red wavelengths. MODIS is the first instrument to observe this signal on a global scale.Red-light fluorescence says something about the physiology of plants and the efficiency of photosynthesis, as different parts of the plant's energy-harnessing machinery are activated based on the amount of light and nutrients available. The amount of fluorescence increases when plants are under stress from a lack of iron, a critical nutrient in the sea. When water is iron-poor, plants slow their growing processes and struggle to dissipate excess solar energy that cannot be used in photosynthesis. The fluorescence data from MODIS gives scientists a tool to see where waters are iron-enriched or iron-limited, and where plankton might flourish or not. Iron is typically picked up by winds blowing dust from deserts and other arid areas, and by river plumes and island currents. || ",
            "hits": 41
        }
    ]
}