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"description": "The islands in the Caribbean have long been known for their crystal clear water and white sand beaches. But in the spring of 2011, something unusual occurred. Thousands of tons of brown alga, known as Sargassum, started washing up on beaches around the Caribbean. Sargassum has historically been found primarily in the Gulf of Mexico and in the North Atlantic Ocean bound by a spiral of currents including the Gulf Stream, North Atlantic Current, the Canary Current and the North Atlantic Equatorial Current.
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"Johns, E. M. et al. The establishment of a pelagic Sargassum population in the tropical Atlantic: biological consequences of a basin-scale long distance dispersal event. Prog. Oceanogr. 182, 102269 (2020). "
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{
"name": "July mean Sargassum Density in the Atlantic Ocean",
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"title": "Monthly mean Sargassum in the Atlantic: Jan 2018 - Dec 2023",
"description": "This visualization shows the monthly mean Sargassum observed in the Atlantic Ocean by the MODIS instruments on NASA's TERRA and AQUA satellites from January 2018 through December 2023. Each square box of color represents an area 0.5 x 0.5 degrees, roughly 3025 square kilometers in size. The color represents the mean amount of Sargassum observed in that box during the month of July. Blue shades indicate that this area had on average less than 3 square kilomenters of Sargassum, while red indicates that the region had an average of 9 square kilometers or more. || sargassum_v30_monthly_4k_2024-05-28_1632.02876_print.jpg (1024x576) [152.7 KB] || sargassum_v30_monthly_4k_2024-05-28_1632.02876_searchweb.png (320x180) [75.7 KB] || sargassum_v30_monthly_4k_2024-05-28_1632.02876_thm.png (80x40) [6.4 KB] || sargassum_v30_monthly_4k_2024-05-28_1632_p30_1080p30.mp4 (1920x1080) [10.8 MB] || composite [0 Item(s)] || composite [0 Item(s)] || sargassum_v30_monthly_4k_2024-05-28_1632_p30_2160p30.mp4 (3840x2160) [31.5 MB] || sargassum_v30_monthly_4k_2024-05-28_1632_2160p60.mp4 (3840x2160) [31.8 MB] || ",
"release_date": "2024-09-30T00:00:00-04:00",
"update_date": "2024-05-30T11:11:31.168344-04:00",
"main_image": {
"id": 1092886,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a005200/a005299/sargassum_v30_monthly_4k_2024-05-28_1632.02876_print.jpg",
"filename": "sargassum_v30_monthly_4k_2024-05-28_1632.02876_print.jpg",
"media_type": "Image",
"alt_text": "This visualization shows the monthly mean Sargassum observed in the Atlantic Ocean by the MODIS instruments on NASA's TERRA and AQUA satellites from January 2018 through December 2023. Each square box of color represents an area 0.5 x 0.5 degrees, roughly 3025 square kilometers in size. The color represents the mean amount of Sargassum observed in that box during the month of July. Blue shades indicate that this area had on average less than 3 square kilomenters of Sargassum, while red indicates that the region had an average of 9 square kilometers or more.",
"width": 1024,
"height": 576,
"pixels": 589824
}
},
{
"id": 5300,
"url": "https://svs.gsfc.nasa.gov/5300/",
"page_type": "Visualization",
"title": "Winds over the Sargasso Sea: December 2009 - March 2010",
"description": "This visualization of MERRA-2 surface winds over the Atlantic Ocean and Sargasso Sea shows some unusually strong westerly winds during the winter of 2009-2010. Here the slower winds are shown in blue while the faster winds are shown in shades of red. The blue oval shows the nominal area of the Sargasso Sea while the yellow rectangle marks the 20–40°N, 80–10°W geographic box. || sargassum_v24_winds_2024-05-29_1627.03090_print.jpg (1024x576) [365.2 KB] || sargassum_v24_winds_2024-05-29_1627.03090_searchweb.png (320x180) [130.0 KB] || sargassum_v24_winds_2024-05-29_1627.03090_thm.png (80x40) [7.8 KB] || sargassum_v24_winds_2024-05-29_1627_p30_1080p30.mp4 (1920x1080) [297.3 MB] || composite [0 Item(s)] || composite [0 Item(s)] || sargassum_v24_winds_2024-05-29_1627_p30_2160p30.mp4 (3840x2160) [682.8 MB] || sargassum_v24_winds_2024-05-29_1627_2160p60.mp4 (3840x2160) [770.7 MB] || ",
"release_date": "2024-09-30T00:00:00-04:00",
"update_date": "2024-08-28T11:11:23.394641-04:00",
"main_image": {
"id": 1092928,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a005300/a005300/sargassum_v24_winds_2024-05-29_1627.03090_print.jpg",
"filename": "sargassum_v24_winds_2024-05-29_1627.03090_print.jpg",
"media_type": "Image",
"alt_text": "This visualization of MERRA-2 surface winds over the Atlantic Ocean and Sargasso Sea shows some unusually strong westerly winds during the winter of 2009-2010. Here the slower winds are shown in blue while the faster winds are shown in shades of red. The blue oval shows the nominal area of the Sargasso Sea while the yellow rectangle marks the 20–40°N, 80–10°W geographic box. ",
"width": 1024,
"height": 576,
"pixels": 589824
}
},
{
"id": 5301,
"url": "https://svs.gsfc.nasa.gov/5301/",
"page_type": "Visualization",
"title": "Atlantic Ocean Surface Drift Patterns from the Caribbean in 2010 and 2011",
"description": "Simulated particle backtrack with windage and timelineThis visualization shows simulated particles released during 2010 and 2011 traced back in time to show their path based on the ocean surface velocities from Global HYCOM model with 1% windage applied. Simulated particles were released between December through April and tracked back in time. The gold balls under the timeline indicate the months when particles were released. Flow lines represent the movement of a particle over a 20-day period. Particles that venture above the 23 degree north latitude line (shown in red) during their lifespan are colored gold while particles that stayed south of it are colored green. || sargassum_rev3_v54_w_Timeline_w_wind_2024-08-14_1619.02999_print.jpg (1024x576) [193.3 KB] || sargassum_rev3_v54_w_Timeline_w_wind_2024-08-14_1619.02999_searchweb.png (320x180) [76.7 KB] || sargassum_rev3_v54_w_Timeline_w_wind_2024-08-14_1619.02999_thm.png (80x40) [6.2 KB] || sargassum_rev3_v54_w_Timeline_w_wind_2024-08-14_1619_1080p60.mp4 (1920x1080) [52.6 MB] || sargassum_rev3_v54_w_Timeline_w_wind_2024-08-14_1619_p30_1080p30.mp4 (1920x1080) [54.0 MB] || composite_wWind [0 Item(s)] || composite_wWind [0 Item(s)] || sargassum_rev3_v54_w_Timeline_w_wind_2024-08-14_1619_2160p60.mp4 (3840x2160) [151.2 MB] || sargassum_rev3_v54_w_Timeline_w_wind_2024-08-14_1619_p30_2160p30.mp4 (3840x2160) [158.8 MB] || sargassum_rev3_v54_w_Timeline_w_wind_2024-08-14_1619_2160p60.mp4.hwshow [226 bytes] || ",
"release_date": "2024-09-30T00:00:00-04:00",
"update_date": "2025-01-06T01:13:54.291194-05:00",
"main_image": {
"id": 1096611,
"url": "https://svs.gsfc.nasa.gov/vis/a000000/a005300/a005301/sargassum_rev3_v54_w_Timeline_w_wind_2024-08-14_1619.02999_print.jpg",
"filename": "sargassum_rev3_v54_w_Timeline_w_wind_2024-08-14_1619.02999_print.jpg",
"media_type": "Image",
"alt_text": "Simulated particle backtrack with windage and timelineThis visualization shows simulated particles released during 2010 and 2011 traced back in time to show their path based on the ocean surface velocities from Global HYCOM model with 1% windage applied. Simulated particles were released between December through April and tracked back in time. The gold balls under the timeline indicate the months when particles were released. Flow lines represent the movement of a particle over a 20-day period. Particles that venture above the 23 degree north latitude line (shown in red) during their lifespan are colored gold while particles that stayed south of it are colored green.",
"width": 1024,
"height": 576,
"pixels": 589824
}
}
],
"sources": [],
"products": [
{
"id": 14692,
"url": "https://svs.gsfc.nasa.gov/14692/",
"page_type": "Produced Video",
"title": "Why Is NASA Tracking Seaweed From Space?",
"description": "Universal Production Music: “Monday Morning Instrumental” by David HarmsThis video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by Pond5.com and Dr. William Hernandez is obtained through permission and may not be excised or remixed in other products. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.htmlComplete transcript available. || 14692_Sargassum_Thumbnail.jpg (1280x720) [313.3 KB] || 14692_Sargassum_Thumbnail_searchweb.png (320x180) [86.8 KB] || 14692_Sargassum_Thumbnail_thm.png (80x40) [7.6 KB] || 14692_Sargassum.en_US.srt [5.9 KB] || 14692_Sargassum.en_US.vtt [5.6 KB] || 14692_Sargassum_Final.mp4 (1920x1080) [441.1 MB] || ",
"release_date": "2024-09-30T11:00:00-04:00",
"update_date": "2024-09-30T10:09:26.468588-04:00",
"main_image": {
"id": 1098899,
"url": "https://svs.gsfc.nasa.gov/vis/a010000/a014600/a014692/14692_Sargassum_Thumbnail.jpg",
"filename": "14692_Sargassum_Thumbnail.jpg",
"media_type": "Image",
"alt_text": "Universal Production Music: “Monday Morning Instrumental” by David Harms\r\rThis video can be freely shared and downloaded. While the video in its entirety can be shared without permission, some individual imagery provided by Pond5.com and Dr. William Hernandez is obtained through permission and may not be excised or remixed in other products. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html\rComplete transcript available.",
"width": 1280,
"height": 720,
"pixels": 921600
}
}
],
"newer_versions": [],
"older_versions": [],
"alternate_versions": []
}