{
"id": 4452,
"url": "https://svs.gsfc.nasa.gov/4452/",
"page_type": "Visualization",
"title": "Vegetation Greening Trend in Canada and Alaska: 1984-2012",
"description": "This animation examines the change in the vegetation trend over Canada and Alaska between 1984 and 2012. || AG_v0020_Final.3975_print.jpg (1024x576) [213.8 KB] || AG_v0020_Final.3975_searchweb.png (180x320) [103.3 KB] || AG_v0020_Final.3975_thm.png (80x40) [6.9 KB] || AG_Final_mb150_slow_1080p30.mp4 (1920x1080) [38.0 MB] || AG_Final_mb150_slow_1080p60.mp4 (1920x1080) [38.0 MB] || 1920x1080_16x9_60p (1920x1080) [0 Item(s)] || 1920x1080_16x9_30p (1920x1080) [0 Item(s)] || AG_Final_mb150_slow_1080p30.webm (1920x1080) [5.7 MB] || AG_Final_mb150_slow_1080p30.mp4.hwshow [226 bytes] || ",
"release_date": "2016-06-02T09:50:00-04:00",
"update_date": "2025-01-05T23:01:43.019059-05:00",
"main_image": {
"id": 424238,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/AG_v0020_Final.3975_print.jpg",
"filename": "AG_v0020_Final.3975_print.jpg",
"media_type": "Image",
"alt_text": "This animation examines the change in the vegetation trend over Canada and Alaska between 1984 and 2012.",
"width": 1024,
"height": 576,
"pixels": 589824
},
"main_video": null,
"main_credits": {
"Visualizations by": [
{
"name": "Cindy Starr",
"employer": "Global Science and Technology, Inc."
}
]
},
"progress": "Complete",
"media_groups": [
{
"id": 333821,
"url": "https://svs.gsfc.nasa.gov/4452/#media_group_333821",
"widget": "Video player",
"title": "",
"caption": "",
"description": "This animation examines the change in the vegetation trend over Canada and Alaska between 1984 and 2012.",
"items": [
{
"id": 269252,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424238,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/AG_v0020_Final.3975_print.jpg",
"filename": "AG_v0020_Final.3975_print.jpg",
"media_type": "Image",
"alt_text": "This animation examines the change in the vegetation trend over Canada and Alaska between 1984 and 2012.",
"width": 1024,
"height": 576,
"pixels": 589824
}
},
{
"id": 269253,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424239,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/AG_v0020_Final.3975_searchweb.png",
"filename": "AG_v0020_Final.3975_searchweb.png",
"media_type": "Image",
"alt_text": "This animation examines the change in the vegetation trend over Canada and Alaska between 1984 and 2012.",
"width": 180,
"height": 320,
"pixels": 57600
}
},
{
"id": 269254,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424240,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/AG_v0020_Final.3975_thm.png",
"filename": "AG_v0020_Final.3975_thm.png",
"media_type": "Image",
"alt_text": "This animation examines the change in the vegetation trend over Canada and Alaska between 1984 and 2012.",
"width": 80,
"height": 40,
"pixels": 3200
}
},
{
"id": 269250,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424243,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/AG_Final_mb150_slow_1080p30.mp4",
"filename": "AG_Final_mb150_slow_1080p30.mp4",
"media_type": "Movie",
"alt_text": "This animation examines the change in the vegetation trend over Canada and Alaska between 1984 and 2012.",
"width": 1920,
"height": 1080,
"pixels": 2073600
}
},
{
"id": 269251,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424244,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/AG_Final_mb150_slow_1080p60.mp4",
"filename": "AG_Final_mb150_slow_1080p60.mp4",
"media_type": "Movie",
"alt_text": "This animation examines the change in the vegetation trend over Canada and Alaska between 1984 and 2012.",
"width": 1920,
"height": 1080,
"pixels": 2073600
}
},
{
"id": 269255,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424237,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/frames/1920x1080_16x9_60p/",
"filename": "1920x1080_16x9_60p",
"media_type": "Frames",
"alt_text": "This animation examines the change in the vegetation trend over Canada and Alaska between 1984 and 2012.",
"width": 1920,
"height": 1080,
"pixels": 2073600
}
},
{
"id": 269256,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424242,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/frames/1920x1080_16x9_30p/",
"filename": "1920x1080_16x9_30p",
"media_type": "Frames",
"alt_text": "This animation examines the change in the vegetation trend over Canada and Alaska between 1984 and 2012.",
"width": 1920,
"height": 1080,
"pixels": 2073600
}
},
{
"id": 269257,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424241,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/AG_Final_mb150_slow_1080p30.webm",
"filename": "AG_Final_mb150_slow_1080p30.webm",
"media_type": "Movie",
"alt_text": "This animation examines the change in the vegetation trend over Canada and Alaska between 1984 and 2012.",
"width": 1920,
"height": 1080,
"pixels": 2073600
}
},
{
"id": 439209,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 1100874,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/AG_Final_mb150_slow_1080p30.mp4.hwshow",
"filename": "AG_Final_mb150_slow_1080p30.mp4.hwshow",
"media_type": "HyperwallShow",
"alt_text": "",
"width": 0,
"height": 0,
"pixels": null
}
}
],
"extra_data": {}
},
{
"id": 333820,
"url": "https://svs.gsfc.nasa.gov/4452/#media_group_333820",
"widget": "Basic text with HTML",
"title": "",
"caption": "",
"description": "High-latitude regions have been warming rapidly since the last century, at a rate higher than the global average. At continental scales, satellite data since the 1980s have indicated increased vegetation productivity (greening) across northern high latitudes, and a productivity decline (browning) for certain areas of undisturbed boreal forest of Canada and Alaska. These remote sensing results have been corroborated by in-situ evidence.
This research provides a spatially complete view of the vegetation greenness change for all of Canada and Alaska by calculating per-pixel NDVI trend from all available 1984–2012 peak-summer Landsat-5 and -7 surface reflectance data. By incorporating observations from overlapping scenes, researchers obtained up to 160 valid NDVI values for certain areas from this 29-year period, establishing the mid-Summer greenness trend.
This animation shows the resulting greenness trend over Canada and Alaska with special attention focused on the regions of Quebec and northern Alaska.",
"items": [],
"extra_data": {}
},
{
"id": 333822,
"url": "https://svs.gsfc.nasa.gov/4452/#media_group_333822",
"widget": "Single image",
"title": "",
"caption": "",
"description": "The colorbar applied to the vegetation productivity trend data. Green colors indicate an increase while brown colors indicate a decrease.",
"items": [
{
"id": 269261,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424248,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/TrendColorbarEnd_lg2_print.jpg",
"filename": "TrendColorbarEnd_lg2_print.jpg",
"media_type": "Image",
"alt_text": "The colorbar applied to the vegetation productivity trend data. Green colors indicate an increase while brown colors indicate a decrease.",
"width": 1024,
"height": 288,
"pixels": 294912
}
},
{
"id": 269258,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424245,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/TrendCB.png",
"filename": "TrendCB.png",
"media_type": "Image",
"alt_text": "The colorbar applied to the vegetation productivity trend data. Green colors indicate an increase while brown colors indicate a decrease.",
"width": 320,
"height": 90,
"pixels": 28800
}
},
{
"id": 269260,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424247,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/TrendColorbarEnd_lg2.tif",
"filename": "TrendColorbarEnd_lg2.tif",
"media_type": "Image",
"alt_text": "The colorbar applied to the vegetation productivity trend data. Green colors indicate an increase while brown colors indicate a decrease.",
"width": 640,
"height": 180,
"pixels": 115200
}
},
{
"id": 269259,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424246,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/TrendColorbar.tif",
"filename": "TrendColorbar.tif",
"media_type": "Image",
"alt_text": "The colorbar applied to the vegetation productivity trend data. Green colors indicate an increase while brown colors indicate a decrease.",
"width": 320,
"height": 90,
"pixels": 28800
}
}
],
"extra_data": {}
},
{
"id": 333823,
"url": "https://svs.gsfc.nasa.gov/4452/#media_group_333823",
"widget": "Single image",
"title": "",
"caption": "",
"description": "A print resolution image of the greening trend over Quebec, Canada.",
"items": [
{
"id": 269263,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424250,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/AG_still.2920_print.jpg",
"filename": "AG_still.2920_print.jpg",
"media_type": "Image",
"alt_text": "A print resolution image of the greening trend over Quebec, Canada.",
"width": 1024,
"height": 576,
"pixels": 589824
}
},
{
"id": 269262,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424249,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/AG_still.2920.tif",
"filename": "AG_still.2920.tif",
"media_type": "Image",
"alt_text": "A print resolution image of the greening trend over Quebec, Canada.",
"width": 5760,
"height": 3240,
"pixels": 18662400
}
},
{
"id": 439210,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 1100875,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/image-greening-trend-over-quebec-canada.hwshow",
"filename": "image-greening-trend-over-quebec-canada.hwshow",
"media_type": "HyperwallShow",
"alt_text": "",
"width": 0,
"height": 0,
"pixels": null
}
}
],
"extra_data": {}
},
{
"id": 333824,
"url": "https://svs.gsfc.nasa.gov/4452/#media_group_333824",
"widget": "Single image",
"title": "",
"caption": "",
"description": "A print resolution image of the greening trend over Canada and Alaska.",
"items": [
{
"id": 269265,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424252,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/AG_still.3975_print.jpg",
"filename": "AG_still.3975_print.jpg",
"media_type": "Image",
"alt_text": "A print resolution image of the greening trend over Canada and Alaska.",
"width": 1024,
"height": 576,
"pixels": 589824
}
},
{
"id": 269264,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 424251,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/AG_still.3975.tif",
"filename": "AG_still.3975.tif",
"media_type": "Image",
"alt_text": "A print resolution image of the greening trend over Canada and Alaska.",
"width": 5760,
"height": 3240,
"pixels": 18662400
}
},
{
"id": 439211,
"type": "media",
"extra_data": null,
"title": null,
"caption": null,
"instance": {
"id": 1100876,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a004400/a004452/image-greening-trend-over-canada-and-alaska.hwshow",
"filename": "image-greening-trend-over-canada-and-alaska.hwshow",
"media_type": "HyperwallShow",
"alt_text": "",
"width": 0,
"height": 0,
"pixels": null
}
}
],
"extra_data": {}
}
],
"studio": "svs",
"funding_sources": [
"ESE"
],
"credits": [
{
"role": "Visualizer",
"people": [
{
"name": "Cindy Starr",
"employer": "Global Science and Technology, Inc."
}
]
},
{
"role": "Scientist",
"people": [
{
"name": "Junchang Ju",
"employer": "USRA"
},
{
"name": "Jeffrey Masek",
"employer": "NASA/GSFC"
}
]
},
{
"role": "Producer",
"people": [
{
"name": "Matthew R. Radcliff",
"employer": "USRA"
}
]
},
{
"role": "Data provider",
"people": [
{
"name": "Eric Sokolowsky",
"employer": "Global Science and Technology, Inc."
}
]
},
{
"role": "Project support",
"people": [
{
"name": "Joycelyn Thomson Jones",
"employer": "NASA/GSFC"
},
{
"name": "Leann Johnson",
"employer": "Global Science and Technology, Inc."
}
]
},
{
"role": "Technical support",
"people": [
{
"name": "Laurence Schuler",
"employer": "ADNET Systems, Inc."
},
{
"name": "Ian Jones",
"employer": "ADNET Systems, Inc."
}
]
}
],
"missions": [
"Landsat",
"LDCM: Landsat Data Continuity Mission"
],
"series": [],
"tapes": [],
"papers": [
"http://www.sciencedirect.com/science/article/pii/S0034425716300013",
"http://www.sciencedirect.com/science/article/pii/S0034425716300013"
],
"datasets": [
{
"name": "Landsat NDVI Trend (1984–2012)",
"common_name": "",
"platform": "Landsat",
"sensor": null,
"type": "Other",
"organizations": [],
"description": "This research used a nominal peak greenness period, July 1 to August 31, to accommodate tundra of all regions for Landsat data selection. We only considered the terrain-corrected scenes, excluding scenes that have cloud cover more than 80%. As a result, a total of 87,762 Landsat scenes over 1271 Path/Row locations were selected from 1984-2012. Of these, 63% were from Landsat-5, as Landsat-5 provided the only data source for 1984-1998 and continued to acquire data until 2011. This work aims to provide a spatially complete view of the vegetation greenness change for all of Canada and Alaska by calculating per-pixel NDVI trend from all available 1984-2012 peak-summer Landsat-5 and -7 surface reflectance data.",
"credit": "",
"url": "",
"date_range": "1984-2012"
}
],
"nasa_science_categories": [
"Earth"
],
"keywords": [
"Alaska",
"Canada",
"Hyperwall",
"Landsat",
"Location",
"NDVI"
],
"recommended_pages": [],
"related": [],
"sources": [],
"products": [
{
"id": 13781,
"url": "https://svs.gsfc.nasa.gov/13781/",
"page_type": "Produced Video",
"title": "Plants Are Struggling to Keep Up with Rising Carbon Dioxide Concentrations",
"description": "Plants play a key role in mitigating climate change. The more carbon dioxide they absorb during photosynthesis, the less carbon dioxide remains trapped in the atmosphere where it can cause temperatures to rise. But scientists have identified an unsettling trend – 86% of land ecosystems globally are becoming progressively less efficient at absorbing the increasing levels of CO2 from the atmosphere. || ",
"release_date": "2020-12-10T14:00:00-05:00",
"update_date": "2023-05-03T13:44:25.893222-04:00",
"main_image": {
"id": 380748,
"url": "https://svs.gsfc.nasa.gov/vis/a010000/a013700/a013781/CO20.jpg",
"filename": "CO20.jpg",
"media_type": "Image",
"alt_text": "Music: A Curious Incident by Jay Price [PRS] and Paul Reeves [PRS]Complete transcript available.",
"width": 1920,
"height": 1080,
"pixels": 2073600
}
},
{
"id": 12276,
"url": "https://svs.gsfc.nasa.gov/12276/",
"page_type": "Produced Video",
"title": "The Changing Arctic",
"description": "A NASA study provides the most detailed look yet at plant life across Alaska and Canada. || c-1024.jpg (1024x576) [335.5 KB] || c-1280.jpg (1280x720) [499.7 KB] || c-1920.jpg (1920x1080) [939.7 KB] || c-1024_print.jpg (1024x576) [351.9 KB] || c-1024_searchweb.png (320x180) [123.5 KB] || c-1024_web.png (320x180) [123.5 KB] || c-1024_thm.png (80x40) [26.2 KB] || ",
"release_date": "2016-06-07T11:00:00-04:00",
"update_date": "2023-05-03T13:48:33.678607-04:00",
"main_image": {
"id": 423719,
"url": "https://svs.gsfc.nasa.gov/vis/a010000/a012200/a012276/c-1024_print.jpg",
"filename": "c-1024_print.jpg",
"media_type": "Image",
"alt_text": "A NASA study provides the most detailed look yet at plant life across Alaska and Canada.",
"width": 1024,
"height": 576,
"pixels": 589824
}
},
{
"id": 12225,
"url": "https://svs.gsfc.nasa.gov/12225/",
"page_type": "Produced Video",
"title": "Details of Arctic Greening in North America",
"description": "NASA scientists used almost 30 years of data from the NASA/USGS Landsat satellites to track changes in vegetation in Alaska and Canada. Of the more than 4 million square miles, 30% had increases in vegetation (greening) while only 3% had decreases (browning). This is the first study to produce a continent-scale map while still providing detailed information at the human scale.Music: \"Alaska,\" by Janik Riegert [GEMA], Josh Tapen [GEMA]Watch this video on the NASA Goddard YouTube channel. || 12225_Arctic_greening_MASTER_large.00140_print.jpg (1024x576) [212.8 KB] || 12225_Arctic_greening_MASTER_large.00140_searchweb.png (320x180) [111.9 KB] || 12225_Arctic_greening_MASTER_large.00140_thm.png (80x40) [6.8 KB] || 12225_Arctic_greening_MASTER_youtube_hq.mov (1920x1080) [781.8 MB] || 12225_Arctic_greening_MASTER_large.mp4 (1920x1080) [109.6 MB] || 12225_Arctic_greening_MASTER_appletv.m4v (1280x720) [53.8 MB] || 12225_Arctic_greening_MASTER.mpeg (1280x720) [368.4 MB] || 12225_Arctic_greening_MASTER_prores.mov (1280x720) [1.5 GB] || 12225_Arctic_greening_MASTER.webm (960x540) [43.9 MB] || 12225_Arctic_greening_MASTER_appletv_subtitles.m4v (1280x720) [53.8 MB] || 12225_Arctic_greening-captions.en_US.srt [105 bytes] || 12225_Arctic_greening-captions.en_US.vtt [118 bytes] || 12225_Arctic_greening_MASTER_ipod_sm.mp4 (320x240) [19.2 MB] || ",
"release_date": "2016-06-02T09:50:00-04:00",
"update_date": "2023-05-03T13:48:34.439305-04:00",
"main_image": {
"id": 424959,
"url": "https://svs.gsfc.nasa.gov/vis/a010000/a012200/a012225/12225_Arctic_greening_MASTER_large.00140_print.jpg",
"filename": "12225_Arctic_greening_MASTER_large.00140_print.jpg",
"media_type": "Image",
"alt_text": "NASA scientists used almost 30 years of data from the NASA/USGS Landsat satellites to track changes in vegetation in Alaska and Canada. Of the more than 4 million square miles, 30% had increases in vegetation (greening) while only 3% had decreases (browning). This is the first study to produce a continent-scale map while still providing detailed information at the human scale.Music: \"Alaska,\" by Janik Riegert [GEMA], Josh Tapen [GEMA]Watch this video on the NASA Goddard YouTube channel.",
"width": 1024,
"height": 576,
"pixels": 589824
}
}
],
"newer_versions": [],
"older_versions": [],
"alternate_versions": []
}