{
    "id": 11420,
    "url": "https://svs.gsfc.nasa.gov/11420/",
    "page_type": "Produced Video",
    "title": "Seasonal Glow",
    "description": "Scientists are now able to view the vitality of Earth’s terrestrial plant life with satellites orbiting hundreds of miles above the planet. The key lies in distinguishing the faint glow, or fluorescence, emitted by healthy plants when they convert sunlight to energy via photosynthesis. NASA researchers have detected the glow, invisible to the naked eye, with an instrument on a European meteorological satellite. Using data collected by the satellite from 2007 to 2011, they created a global map of the phenomenon that reveals how plant productivity changes through the seasons. Watch the video to see how different parts of the world brighten and dim over the course of an average year. || ",
    "release_date": "2014-01-09T00:00:00-05:00",
    "update_date": "2023-05-03T13:51:19.410178-04:00",
    "main_image": {
        "id": 459476,
        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/coverx-1024.jpg",
        "filename": "coverx-1024.jpg",
        "media_type": "Image",
        "alt_text": "Scientists map the light emitted by Earth’s land plants.",
        "width": 1024,
        "height": 576,
        "pixels": 589824
    },
    "main_video": {
        "id": 459478,
        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/4100-540-MASTER_high.mp4",
        "filename": "4100-540-MASTER_high.mp4",
        "media_type": "Movie",
        "alt_text": "Darker green indicates regions with little or no fluorescence; lighter green and white indicates regions of high fluorescence.",
        "width": 960,
        "height": 540,
        "pixels": 518400
    },
    "progress": "Complete",
    "media_groups": [
        {
            "id": 342036,
            "url": "https://svs.gsfc.nasa.gov/11420/#media_group_342036",
            "widget": "Basic text with HTML",
            "title": "",
            "caption": "",
            "description": "Scientists are now able to view the vitality of Earth’s terrestrial plant life with satellites orbiting hundreds of miles above the planet. The key lies in distinguishing the faint glow, or fluorescence, emitted by healthy plants when they convert sunlight to energy via photosynthesis. NASA researchers have detected the glow, invisible to the naked eye, with an instrument on a European meteorological satellite. Using data collected by the satellite from 2007 to 2011, they created a global map of the phenomenon that reveals how plant productivity changes through the seasons. Watch the video to see how different parts of the world brighten and dim over the course of an average year.",
            "items": [],
            "extra_data": {}
        },
        {
            "id": 342037,
            "url": "https://svs.gsfc.nasa.gov/11420/#media_group_342037",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "Scientists map the light emitted by Earth’s land plants.",
            "items": [
                {
                    "id": 295718,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459474,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/cover-1920.jpg",
                        "filename": "cover-1920.jpg",
                        "media_type": "Image",
                        "alt_text": "Scientists map the light emitted by Earth’s land plants.",
                        "width": 1920,
                        "height": 1080,
                        "pixels": 2073600
                    }
                },
                {
                    "id": 295719,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459475,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/cover-1280.jpg",
                        "filename": "cover-1280.jpg",
                        "media_type": "Image",
                        "alt_text": "Scientists map the light emitted by Earth’s land plants.",
                        "width": 1280,
                        "height": 720,
                        "pixels": 921600
                    }
                },
                {
                    "id": 295720,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459476,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/coverx-1024.jpg",
                        "filename": "coverx-1024.jpg",
                        "media_type": "Image",
                        "alt_text": "Scientists map the light emitted by Earth’s land plants.",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 295721,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459472,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/coverx-1024_web.png",
                        "filename": "coverx-1024_web.png",
                        "media_type": "Image",
                        "alt_text": "Scientists map the light emitted by Earth’s land plants.",
                        "width": 320,
                        "height": 180,
                        "pixels": 57600
                    }
                },
                {
                    "id": 295722,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459473,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/coverx-1024_thm.png",
                        "filename": "coverx-1024_thm.png",
                        "media_type": "Image",
                        "alt_text": "Scientists map the light emitted by Earth’s land plants.",
                        "width": 80,
                        "height": 40,
                        "pixels": 3200
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 342038,
            "url": "https://svs.gsfc.nasa.gov/11420/#media_group_342038",
            "widget": "Video player",
            "title": "",
            "caption": "",
            "description": "Darker green indicates regions with little or no fluorescence; lighter green and white indicates regions of high fluorescence.",
            "items": [
                {
                    "id": 295725,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459479,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/pf-1024.jpg",
                        "filename": "pf-1024.jpg",
                        "media_type": "Image",
                        "alt_text": "Darker green indicates regions with little or no fluorescence; lighter green and white indicates regions of high fluorescence.",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 295726,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459480,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/pf-1920.jpg",
                        "filename": "pf-1920.jpg",
                        "media_type": "Image",
                        "alt_text": "Darker green indicates regions with little or no fluorescence; lighter green and white indicates regions of high fluorescence.",
                        "width": 1920,
                        "height": 1080,
                        "pixels": 2073600
                    }
                },
                {
                    "id": 295727,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459481,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/pf-1280.jpg",
                        "filename": "pf-1280.jpg",
                        "media_type": "Image",
                        "alt_text": "Darker green indicates regions with little or no fluorescence; lighter green and white indicates regions of high fluorescence.",
                        "width": 1280,
                        "height": 720,
                        "pixels": 921600
                    }
                },
                {
                    "id": 295724,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459478,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/4100-540-MASTER_high.mp4",
                        "filename": "4100-540-MASTER_high.mp4",
                        "media_type": "Movie",
                        "alt_text": "Darker green indicates regions with little or no fluorescence; lighter green and white indicates regions of high fluorescence.",
                        "width": 960,
                        "height": 540,
                        "pixels": 518400
                    }
                },
                {
                    "id": 295728,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459482,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/4100-540-MASTER_high.webmhd.webm",
                        "filename": "4100-540-MASTER_high.webmhd.webm",
                        "media_type": "Movie",
                        "alt_text": "Darker green indicates regions with little or no fluorescence; lighter green and white indicates regions of high fluorescence.",
                        "width": 960,
                        "height": 540,
                        "pixels": 518400
                    }
                },
                {
                    "id": 295723,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 853499,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/a011420_iPad_movie_4100-540-MASTER/4100-540-MASTER.m3u8",
                        "filename": "4100-540-MASTER.m3u8",
                        "media_type": "File",
                        "alt_text": "Darker green indicates regions with little or no fluorescence; lighter green and white indicates regions of high fluorescence."
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 342039,
            "url": "https://svs.gsfc.nasa.gov/11420/#media_group_342039",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "The northward march of fluorescence during spring in the northern hemisphere reflects thriving vegetation.",
            "items": [
                {
                    "id": 295729,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459484,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s1-1920.jpg",
                        "filename": "s1-1920.jpg",
                        "media_type": "Image",
                        "alt_text": "The northward march of fluorescence during spring in the northern hemisphere reflects thriving vegetation.",
                        "width": 1920,
                        "height": 1080,
                        "pixels": 2073600
                    }
                },
                {
                    "id": 295730,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459485,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s1-1280.jpg",
                        "filename": "s1-1280.jpg",
                        "media_type": "Image",
                        "alt_text": "The northward march of fluorescence during spring in the northern hemisphere reflects thriving vegetation.",
                        "width": 1280,
                        "height": 720,
                        "pixels": 921600
                    }
                },
                {
                    "id": 295731,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459486,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s1-1024.jpg",
                        "filename": "s1-1024.jpg",
                        "media_type": "Image",
                        "alt_text": "The northward march of fluorescence during spring in the northern hemisphere reflects thriving vegetation.",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 295732,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459483,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s1-1024_web.png",
                        "filename": "s1-1024_web.png",
                        "media_type": "Image",
                        "alt_text": "The northward march of fluorescence during spring in the northern hemisphere reflects thriving vegetation.",
                        "width": 320,
                        "height": 180,
                        "pixels": 57600
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 342040,
            "url": "https://svs.gsfc.nasa.gov/11420/#media_group_342040",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "Fluorescence peaks during summer in the northern hemisphere. ",
            "items": [
                {
                    "id": 295733,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459488,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s2-1024.jpg",
                        "filename": "s2-1024.jpg",
                        "media_type": "Image",
                        "alt_text": "Fluorescence peaks during summer in the northern hemisphere. ",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 295734,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459489,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s2-1280.jpg",
                        "filename": "s2-1280.jpg",
                        "media_type": "Image",
                        "alt_text": "Fluorescence peaks during summer in the northern hemisphere. ",
                        "width": 1280,
                        "height": 720,
                        "pixels": 921600
                    }
                },
                {
                    "id": 295735,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459490,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s2-1920.jpg",
                        "filename": "s2-1920.jpg",
                        "media_type": "Image",
                        "alt_text": "Fluorescence peaks during summer in the northern hemisphere. ",
                        "width": 1920,
                        "height": 1080,
                        "pixels": 2073600
                    }
                },
                {
                    "id": 295736,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459487,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s2-1024_web.png",
                        "filename": "s2-1024_web.png",
                        "media_type": "Image",
                        "alt_text": "Fluorescence peaks during summer in the northern hemisphere. ",
                        "width": 320,
                        "height": 180,
                        "pixels": 57600
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 342041,
            "url": "https://svs.gsfc.nasa.gov/11420/#media_group_342041",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "By fall in the northern hemisphere, fewer hours of sunlight slows photosynthesis and fluorescence wanes. ",
            "items": [
                {
                    "id": 295737,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459492,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s3-1920.jpg",
                        "filename": "s3-1920.jpg",
                        "media_type": "Image",
                        "alt_text": "By fall in the northern hemisphere, fewer hours of sunlight slows photosynthesis and fluorescence wanes. ",
                        "width": 1920,
                        "height": 1080,
                        "pixels": 2073600
                    }
                },
                {
                    "id": 295738,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459493,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s3-1280.jpg",
                        "filename": "s3-1280.jpg",
                        "media_type": "Image",
                        "alt_text": "By fall in the northern hemisphere, fewer hours of sunlight slows photosynthesis and fluorescence wanes. ",
                        "width": 1280,
                        "height": 720,
                        "pixels": 921600
                    }
                },
                {
                    "id": 295739,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459494,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s3-1024.jpg",
                        "filename": "s3-1024.jpg",
                        "media_type": "Image",
                        "alt_text": "By fall in the northern hemisphere, fewer hours of sunlight slows photosynthesis and fluorescence wanes. ",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 295740,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459491,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s3-1024_web.png",
                        "filename": "s3-1024_web.png",
                        "media_type": "Image",
                        "alt_text": "By fall in the northern hemisphere, fewer hours of sunlight slows photosynthesis and fluorescence wanes. ",
                        "width": 320,
                        "height": 180,
                        "pixels": 57600
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 342042,
            "url": "https://svs.gsfc.nasa.gov/11420/#media_group_342042",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "Photosynthesis—and thus fluorescence—is minimal during winter in the northern hemisphere.",
            "items": [
                {
                    "id": 295741,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459496,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s4-1024.jpg",
                        "filename": "s4-1024.jpg",
                        "media_type": "Image",
                        "alt_text": "Photosynthesis—and thus fluorescence—is minimal during winter in the northern hemisphere.",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 295742,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459497,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s4-1280.jpg",
                        "filename": "s4-1280.jpg",
                        "media_type": "Image",
                        "alt_text": "Photosynthesis—and thus fluorescence—is minimal during winter in the northern hemisphere.",
                        "width": 1280,
                        "height": 720,
                        "pixels": 921600
                    }
                },
                {
                    "id": 295743,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459498,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s4-1920.jpg",
                        "filename": "s4-1920.jpg",
                        "media_type": "Image",
                        "alt_text": "Photosynthesis—and thus fluorescence—is minimal during winter in the northern hemisphere.",
                        "width": 1920,
                        "height": 1080,
                        "pixels": 2073600
                    }
                },
                {
                    "id": 295744,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 459495,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011420/s4-1024_web.png",
                        "filename": "s4-1024_web.png",
                        "media_type": "Image",
                        "alt_text": "Photosynthesis—and thus fluorescence—is minimal during winter in the northern hemisphere.",
                        "width": 320,
                        "height": 180,
                        "pixels": 57600
                    }
                }
            ],
            "extra_data": {}
        }
    ],
    "studio": "GMS",
    "funding_sources": [
        "PAO"
    ],
    "credits": [
        {
            "role": "Animator",
            "people": [
                {
                    "name": "Greg Shirah",
                    "employer": "NASA/GSFC"
                }
            ]
        },
        {
            "role": "Producer",
            "people": [
                {
                    "name": "Kayvon Sharghi",
                    "employer": "USRA"
                }
            ]
        },
        {
            "role": "Scientist",
            "people": [
                {
                    "name": "Joanna Joiner",
                    "employer": "NASA/GSFC"
                }
            ]
        },
        {
            "role": "Writer",
            "people": [
                {
                    "name": "Kathryn Hansen",
                    "employer": "Wyle Information Systems"
                }
            ]
        }
    ],
    "missions": [],
    "series": [],
    "tapes": [],
    "papers": [],
    "datasets": [],
    "nasa_science_categories": [
        "Earth"
    ],
    "keywords": [
        "App"
    ],
    "recommended_pages": [],
    "related": [
        {
            "id": 4100,
            "url": "https://svs.gsfc.nasa.gov/4100/",
            "page_type": "Visualization",
            "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. || ",
            "release_date": "2013-11-08T11:00:00-05:00",
            "update_date": "2023-11-14T00:04:22.374119-05:00",
            "main_image": {
                "id": 464168,
                "url": "https://svs.gsfc.nasa.gov/vis/a000000/a004100/a004100/comparison2.8196.jpg",
                "filename": "comparison2.8196.jpg",
                "media_type": "Image",
                "alt_text": "Comparison of fluorescence data (top) to NDVI data (bottom)",
                "width": 1920,
                "height": 1080,
                "pixels": 2073600
            }
        }
    ],
    "sources": [],
    "products": [],
    "newer_versions": [],
    "older_versions": [],
    "alternate_versions": []
}