{ "count": 14, "next": null, "previous": null, "results": [ { "id": 5660, "url": "https://svs.gsfc.nasa.gov/5660/", "result_type": "Visualization", "release_date": "2026-07-15T11:59:00-04:00", "title": "The Geoid", "description": "The geoid is an equipotential surface that can be thought of as the shape an ocean surface would take due to the Earth's gravity field. In this visualization the geoid height is greatly exaggerated, by a factor of 10,000. The geoid height visualized here comes from the gravity field model GOCO06s, a satellite-only global gravity field model computed by the GOCO (Gravity Observation Combination) project.", "hits": 74026 }, { "id": 14261, "url": "https://svs.gsfc.nasa.gov/14261/", "result_type": "Produced Video", "release_date": "2023-01-19T16:00:00-05:00", "title": "Leaders in Lidar", "description": "In this series, we dive into the legacy of Goddard's lead role in developing laser altimetry, which has revolutionized the way we map our planet, the Moon and other planets. Each chapter looks at the successes and failures of these lidar instruments, beginning with the Mars Observer Laser Altimeter in the late 1980s, through the current generation of laser altimeters on ICESat-2 and GEDI. Through dozens of interviews and archival footage, the history, challenges and legacy of lidar are uncovered. || ", "hits": 90 }, { "id": 13688, "url": "https://svs.gsfc.nasa.gov/13688/", "result_type": "Produced Video", "release_date": "2020-08-17T11:45:00-04:00", "title": "NASA Explores Earth's Magnetic \"Dent\"", "description": "Music: \"Now We Wait\" by Kamal David Kamruddin [PRS]This 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 Artbeats is obtained through permission and may not be excised or remixed in other products. Specific details on stock footage may be found here. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html.Complete transcript available. || South_Atlantic_Anomaly_Still_2.jpg (1920x1080) [346.0 KB] || South_Atlantic_Anomaly_Still_2_print.jpg (1024x576) [139.2 KB] || South_Atlantic_Anomaly_Still_2_searchweb.png (320x180) [43.0 KB] || South_Atlantic_Anomaly_Still_2_web.png (320x180) [43.0 KB] || South_Atlantic_Anomaly_Still_2_thm.png (80x40) [4.8 KB] || 13688_South_Atlantic_Anomaly_Fine.mov (1920x1080) [2.6 GB] || 13688_South_Atlantic_Anomaly_Fine.webm (960x540) [65.7 MB] || 13688_South_Atlantic_Anomaly_Fine.mp4 (1920x1080) [292.9 MB] || 13688_South_Atlantic_Anomaly_Fine_lowres.mp4 (1280x720) [52.3 MB] || SAA.en_US.srt [3.5 KB] || SAA.en_US.vtt [3.5 KB] || ", "hits": 152 }, { "id": 4840, "url": "https://svs.gsfc.nasa.gov/4840/", "result_type": "Visualization", "release_date": "2020-08-17T11:00:00-04:00", "title": "South Atlantic Anomaly: 2015 through 2025", "description": "South Atlantic Anomaly from 2015 through 2025 showing the geomagnetic intensity at the Earth's surface and the core-mantle boundary. There are versions that include the dates and colorbars and versions without the date and colorbat.This video is also available on our YouTube channel. || saa_intensity_comp2160_p60.4898_print.jpg (1024x576) [58.0 KB] || saa_intensity_comp2160_p60.4898_print_searchweb.png (320x180) [49.9 KB] || saa_intensity_comp2160_p60.4898_print_thm.png (80x40) [3.8 KB] || saa_intensity_comp_1080p30.mp4 (1920x1080) [31.9 MB] || saa_intensity_comp_1080p60.mp4 (1920x1080) [34.4 MB] || saa_intensity_dataOnly_1080_p30.mp4 (1920x1080) [29.3 MB] || saa_intensity_dataOnly_1080_p60.mp4 (1920x1080) [31.3 MB] || saa_intensity_dataOnly_1080_p30.webm (1920x1080) [9.1 MB] || dataOnly (1920x1080) [0 Item(s)] || saa_intensity_comp2160_p30.mp4 (3840x2160) [86.1 MB] || saa_intensity_comp2160_p60.mp4 (3840x2160) [93.1 MB] || comp (3840x2160) [0 Item(s)] || captions_silent.29860.en_US.srt [43 bytes] || saa_intensity_dataOnly_1080_p30.mp4.hwshow [197 bytes] || ", "hits": 1408 }, { "id": 4376, "url": "https://svs.gsfc.nasa.gov/4376/", "result_type": "Visualization", "release_date": "2015-10-27T00:00:00-04:00", "title": "Antarctic Mass Change from GRACE derived Gravity Observations: Jan 2004 - Jun 2014", "description": "GRACE, NASA's Gravity Recovery and Climate Experiment, consists of twin co-orbiting satellites that fly in a near polar orbit separated by a distance of 220 km. GRACE precisely measures the distance between the two spacecraft in order to make detailed measurements of the Earth's gravitational field. Since its launch in 2002, GRACE has provided a continuous record of changes in the mass of the Earth's ice sheets.These animations show the change in the mass of the Antarctic Ice Sheet between January 2004 and June 2014 as measured by the pair of GRACE satellites. The 1-arc-deg NASA GSFC mascon solution data was resampled to a 5130 x 5130 data array using Kriging interpolation. A color scale was applied where blue values indicate an increase in the ice sheet mass while red shades indicate a decrease. In addition, a graph overlay shows the running total of the accumulated mass change in gigatons.Four separate animations are shown here: one of the full Antarctic Ice Sheet (above) and three of individual regional views (below) showing the regions of West Antarctica, the Antarctic Peninsula and East Antarctica. The time-series of each region is shown with a graph depicting the ice loss for the region alone. Note that the range on the color scale is different for each regional view in order to portray the most detail possible. Areas outside the region being shown are colored in a pale green to indicate that it is not included in the view. The floating ice shelves, shown in a lighter shade of green, are also not included.Technical Note: The glacial isostatic adjustment signal (Earth mass redistribution in response to historical ice loading) has been removed using the ICE-6G model (Peltier et al. 2015). || ", "hits": 38 }, { "id": 4325, "url": "https://svs.gsfc.nasa.gov/4325/", "result_type": "Visualization", "release_date": "2015-08-26T10:00:00-04:00", "title": "NASA GSFC MASCON Solution over Greenland from Jan 2004 - Jun 2014", "description": "Visualization of the mass change over Greenland from January 2004 through June 2014. The surface of Greenland shows the change in equivalent water height while the graph overlay shows the total accumulated change in gigatons. || GRACE_Greenland_wGraph_p30.1322_print.jpg (1024x576) [138.2 KB] || GRACE_Greenland_wGraph_p30.1322_searchweb.png (180x320) [84.6 KB] || GRACE_Greenland_wGraph_p30.1322_thm.png (80x40) [7.0 KB] || GRACE_Greenland_wGraph_p30_720p.webm (1280x720) [2.5 MB] || GRACE_Greenland_wGraph_p30_1080p.webm (1920x1080) [2.9 MB] || GRACE_Greenland_wGraph_p30_1080p.mp4 (1920x1080) [16.9 MB] || GRACE_Greenland_wGraph_p30_720p.mp4 (1280x720) [9.4 MB] || composite (1920x1080) [0 Item(s)] || composite (1920x1080) [0 Item(s)] || GRACE_Greenland_wGraph_p30_360p.mp4 (640x360) [3.4 MB] || MASCON_solution_greenland_4325.key [12.7 MB] || MASCON_solution_greenland_4325.pptx [10.1 MB] || ", "hits": 84 }, { "id": 4347, "url": "https://svs.gsfc.nasa.gov/4347/", "result_type": "Visualization", "release_date": "2015-08-26T10:00:00-04:00", "title": "NASA GSFC MASCON Solution over Antarctica from Jan 2004 - Jun 2014", "description": "Visualization of the mass change over the Antarctic Ice Sheet from January 2004 through June 2014. The color on the surface of the ice sheet shows the change in equivalent water height while the graph overlay shows the total accumulated change in gigatons. || GRACE_Antarctic_Wgraph_p30.2521_print.jpg (1024x576) [110.0 KB] || GRACE_Antarctic_Wgraph_p30.2521_searchweb.png (320x180) [71.0 KB] || GRACE_Antarctic_Wgraph_p30.2521_thm.png (80x40) [6.3 KB] || GRACE_Antarctic_Wgraph_p30_1080p.mp4 (1920x1080) [18.2 MB] || GRACE_Antarctic_Wgraph_p30_1080p.webm (1920x1080) [7.7 MB] || GRACE_Antarctic_Wgraph_p30_720p.mp4 (1280x720) [10.4 MB] || GRACE_Antarctic_Wgraph_p30_720p.webm (1280x720) [8.7 MB] || composite (1920x1080) [256.0 KB] || composite (1920x1080) [512.0 KB] || GRACE_Antarctic_Wgraph_p30_360p.mp4 (640x360) [3.8 MB] || MASCON_solution_antartica_4347.pptx [11.0 MB] || MASCON_solution_antartica_4347.key [13.6 MB] || ", "hits": 87 }, { "id": 11234, "url": "https://svs.gsfc.nasa.gov/11234/", "result_type": "Produced Video", "release_date": "2013-04-23T00:00:00-04:00", "title": "Mapping Earth's Gravity", "description": "Of the terrestrial planets in the solar system, Earth is not only the largest body but also the most massive. A calculation of its weight puts it slightly over 6.58 sextillion tons (that's 6.58x10^21 or 6,580,000,000,000,000,000,000). It's heavy because everything on our planet has mass—from the land that covers the continents to the water that fills the oceans. Earth's mass, however, isn't distributed evenly. Varying surface topography and the continuous movement of water cause different parts of the globe to have more or less mass than other regions. Since 2002, NASA's twin GRACE satellites have mapped Earth's gravity (the attractive force exerted by its mass), enabling scientists to see these differences and monitor how they change over time. Watch the visualization for a tour of Earth's gravity field. || ", "hits": 2755 }, { "id": 3687, "url": "https://svs.gsfc.nasa.gov/3687/", "result_type": "Visualization", "release_date": "2010-03-24T00:00:00-04:00", "title": "Greenland Ice Sheet Mass Changes from NASA GSFC GRACE Mascon Solutions with Banded Color Scale", "description": "Luthcke, S.B., D.D. Rowlands, J.J. McCarthy, A. Arendt, T. Sabaka, J.P. Boy, F.G. Lemoine, \"Recent Changes of the Earth's Land Ice from GRACE, \" presented at 2009 Fall AGU, H13G-02 (693337), Dec. 14, 2009.The mass changes of the Greenland Ice Sheet (GIS) are computed from the Gravity Recovery and Climate Experiment (GRACE) inter-satellite range-rate observations for the period April 5, 2003 - July 25, 2009. The mass of the GIS has been computed at 10-day intervals and 200km spatial resolution from a regional high-resolution mascon solution (Luthcke and others, 2008 and 2006). The animation shows the change in mass referenced from April 5, 2003. The spatial variation in surface mass is shown in centimeters equivalent height of water. The time variation of the GIS mass is shown in the x-y plot insert with units of Gigatons.Corresponding author:Scott B. LuthckeNASA GSFCPlanetary Geodynamics Laboratory, Code 698Scott.B.Luthcke@nasa.gov || ", "hits": 26 }, { "id": 3671, "url": "https://svs.gsfc.nasa.gov/3671/", "result_type": "Visualization", "release_date": "2010-01-14T12:00:00-05:00", "title": "Amazon Basin Monthly GRACE Data", "description": "This visualization displays monthly GRACE data in the Amazon basin. GRACE (Gravity Recovery and Climate Experiment) measures mass distribution and in this instance is used to demonstrate water storage and movement in the basin. Warmer colors like red and yellow reveal areas with greater mass, or more water, while cooler colors like blue and green indicate areas with lesser mass, or less water. || ", "hits": 285 }, { "id": 3663, "url": "https://svs.gsfc.nasa.gov/3663/", "result_type": "Visualization", "release_date": "2009-12-11T00:00:00-05:00", "title": "Greenland Ice Sheet Mass Changes from NASA GSFC GRACE Mascon Solutions", "description": "Luthcke, S.B., D.D. Rowlands, J.J. McCarthy, A. Arendt, T. Sabaka, J.P. Boy, F.G. Lemoine, \"Recent Changes of the Earth's Land Ice from GRACE, \" presented at 2009 Fall AGU, H13G-02 (693337), Dec. 14, 2009.The mass changes of the Greenland Ice Sheet (GIS) are computed from the Gravity Recovery and Climate Experiment (GRACE) inter-satellite range-rate observations for the period April 5, 2003 - July 25, 2009. The mass of the GIS has been computed at 10-day intervals and 200km spatial resolution from a regional high-resolution mascon solution (Luthcke and others, 2008 and 2006). The animation shows the change in mass referenced from April 5, 2003. The spatial variation in surface mass is shown in centimeters equivalent height of water. The time variation of the GIS mass is shown in the x-y plot insert with units of Gigatons.Corresponding author:Scott B. LuthckeNASA GSFCPlanetary Geodynamics Laboratory, Code 698Scott.B.Luthcke@nasa.gov || ", "hits": 104 }, { "id": 3673, "url": "https://svs.gsfc.nasa.gov/3673/", "result_type": "Visualization", "release_date": "2009-12-11T00:00:00-05:00", "title": "Poster of Greenland Ice Sheet Mass Changes from NASA GSFC GRACE Mascon Solutions", "description": "Luthcke, S.B., D.D. Rowlands, J.J. McCarthy, A. Arendt, T. Sabaka, J.P. Boy, F.G. Lemoine, \"Recent Changes of the Earth's Land Ice from GRACE, \" presented at 2009 Fall AGU, H13G-02 (693337), Dec. 14, 2009.The mass changes of the Greenland Ice Sheet (GIS) are computed from the Gravity Recovery and Climate Experiment (GRACE) inter-satellite range-rate observations for the period April 5, 2003 - July 25, 2009. The mass of the GIS has been computed at 10-day intervals and 200 km spatial resolution from a regional high-resolution mascon solution (Luthcke and others, 2008 and 2006). The poster shows the change in mass during February, April, July and October from 2003 through 2009 as referenced from April 5, 2003. The spatial variation in surface mass is shown in centimeters equivalent height of water. The chart shown in the upper left corner presents total ice loss in Greenland over the same time period measured in gigatons. Corresponding author:Scott B. LuthckeNASA GSFCPlanetary Geodynamics Laboratory, Code 698Scott.B.Luthcke@nasa.gov || ", "hits": 18 }, { "id": 3655, "url": "https://svs.gsfc.nasa.gov/3655/", "result_type": "Visualization", "release_date": "2009-11-24T14:30:00-05:00", "title": "GRACE Gravity Model", "description": "The following animation displays the Earth's gravitational anomalies. The colors and heights represent the strength of gravity at the locality. Areas with less mass, such as ocean basins, show up as blue, that is less gravity, while mountains such as the Andes are red, representing the greater pull of gravity. The visualization utilizes a version of the GRACE Gravity Model 02 that has been smoothed for greater readability. || ", "hits": 2480 }, { "id": 3522, "url": "https://svs.gsfc.nasa.gov/3522/", "result_type": "Visualization", "release_date": "2008-11-12T00:00:00-05:00", "title": "Recent Glacier Mass Changes in the Gulf of Alaska Region from GRACE Mascon Solutions", "description": "Mass changes of the Earth's ice sheets and glacier systems are of considerable importance because of their sensitivity to climate change and their contribution to rising sea level. Recent changes in the cryosphere highlight the importance of methods for directly observing the complex spatial and temporal variation of land ice mass flux. Since its launch in March of 2002, the NASA/DLR Gravity Recovery and Climate Experiment (GRACE) mission has been acquiring ultra-precise inter-satellite K-band range and range-rate (KBRR) measurements enabling a direct mapping of static and time-variable gravity. These data provide new opportunities to observe and understand ice mass changes at unprecedented temporal and spatial resolutions. In order to improve upon the ice mass change observations derived from GRACE, we have employed unique data analysis approaches to obtain lumped harmonic local mass concentration solutions (mascon solutions) from GRACE inter-satellite range-rate measurements. We have computed multi-year time series of surface mass flux for Greenland and Antarctica coastal and interior ice sheet sub-drainage systems as well as the Alaskan glacier systems. These mascon solutions provide important observations of the seasonal and inter-annual evolution of the Earth's land ice. Additionally, these solutions facilitate a detailed comparison to surface elevation change observations from spaceborne and airborne laser altimetry as well as surface melt observations. We present our latest mascon solutions of the Alaska mountain glaciers. We compare these mass flux solutions to ICESat and airborne laser altimeter observations of surface elevation change as well as surface melt observations derived from MODIS data. The combination of GRACE high-resolution mass flux observations together with the surface elevation change and surface melt observations is beginning to reveal a detailed understanding of the Earth's high latitude land ice evolution. || ", "hits": 52 } ] }