{ "count": 8, "next": null, "previous": null, "results": [ { "id": 11475, "url": "https://svs.gsfc.nasa.gov/11475/", "result_type": "Produced Video", "release_date": "2014-04-17T00:00:00-04:00", "title": "Earth Mapper", "description": "Since its launch in February 2013, the Landsat 8 satellite has collected detailed views of Earth’s surface. The satellite images a continuous strip of land 115 miles across, or about the width of Florida’s peninsula, as it circles the poles. As the planet rotates, the view beneath the satellite’s detector shifts, allowing it to glimpse a new parade of forests, farmland, cities, glaciers and more. The satellite gathers data on roughly half of Earth’s surface every eight days, and the entire planet every 16 days. Landsat 8 is a joint NASA and U.S. Geological Survey mission, and is the latest in the Landsat series of Earth-observing satellites that have continuously monitored land cover for more than four decades. Watch the video to learn more. || ", "hits": 144 }, { "id": 4040, "url": "https://svs.gsfc.nasa.gov/4040/", "result_type": "Visualization", "release_date": "2013-02-05T00:00:00-05:00", "title": "Florida Everglades LDCM Band Remix", "description": "The Landsat Data Continuity Mission (LDCM) is the future of Landsat satellites. LDCM launched on February 11, 2013. Landsat satellites view the Earth through a number of different bands. Each band captures imagery in different spectral wavelengths. Scientists can combine these bands a number of ways to obtain information about the satellite imagery. This visualization shows several different band combinations over the Florida Everglades. || ", "hits": 59 }, { "id": 3939, "url": "https://svs.gsfc.nasa.gov/3939/", "result_type": "Visualization", "release_date": "2012-04-16T00:00:00-04:00", "title": "Landsat Data Continuity Mission (LDCM) Orbits", "description": "The Landsat Data Continuity Mission (LDCM), also to be named Landsat 8 after its scheduled launch in February 2013, will be the eighth in the series of Landsat satellites. Since 1972, Landsat satellites have been observing and measuring Earth's continental and coastal landscapes at 15 to 30 meter resolution, where human impacts and natural changes can be monitored and characterized over time.This animation portrays how the LDCM satellite will orbit the Earth 13 times per day at an altitude of 705 km collecting landcover data. With a cross-track width of 185 km, the satellite will completely cover the globe in a 16 day period compiling a total of 233 orbits. A day number and the elapsed time are shown to clearly depict the passage of time which starts slowly in the beginning and increases to day-by-day steps at the end of the animation. The terrain is exaggerated by 6 times during the first day portrayed, but is increased to 12 times when the camera pulls out to a global view. An artificial orbit trail is shown following the spacecraft to indicate its position when the satellite itself is too small to be visible. || ", "hits": 101 }, { "id": 10926, "url": "https://svs.gsfc.nasa.gov/10926/", "result_type": "Produced Video", "release_date": "2012-03-08T12:00:00-05:00", "title": "Evaporation and Transpiration", "description": "Much of the water that soaks into the soil from irrigation or rain ultimately returns the the atmosphere as water vapor through direct evaporation from the surface or by transpiration through plant leaves as the plants use the water for growth and seed production. This loss cools the surface and plant canopy just like the evaporation of sweat cools our skin. A cool field in an arid area indicates water use by irrigation. Using the surface temperatures measured by satellites, and some additional information, water resource managers can determine the rate at which water is used in a farm field. || ", "hits": 433 }, { "id": 10923, "url": "https://svs.gsfc.nasa.gov/10923/", "result_type": "Produced Video", "release_date": "2012-03-06T12:00:00-05:00", "title": "Flying through the Rift: An update on the crack in the P.I.G.", "description": "NASA's DC-8 flew over the Pine Island Glacier Ice Shelf on Oct. 14, 2011, as part of Operation IceBridge. A large, long-running crack was plainly visible across the ice shelf. The DC-8 took off on Oct. 26, 2011, to collect more data on the ice shelf and the crack. The area beyond the crack that could calve in the coming months covers about 310 square miles (800 sq. km). || ", "hits": 29 }, { "id": 10914, "url": "https://svs.gsfc.nasa.gov/10914/", "result_type": "Produced Video", "release_date": "2012-02-14T05:00:00-05:00", "title": "TIRS - the Thermal Infrared Sensor on LDCM", "description": "The Thermal InfraRed Sensor (TIRS) is one of the instruments on the Landsat Data Continuity Mission (LDCM) satellite. It will continue the archive of thermal imaging and support emerging applications such as evapotranspiration rate measurements for water management. TIRS is being built by NASA GSFC and has a three-year design life.In February 2012, TIRS was shipped from GSFC to Orbital Sciences Corporation in Gilbert, Arizona to be integrated with the LDCM spacecraft.TIRS operates in a pushbroom mode to create images in two IR bands, centered at 10.8 and 12.0 microns, over a 185 km swath with a 100 m spatial resolution. The TIRS design includes cryogenically-cooled QWIP detector arrays and a steerable mirror to choose among 3 views: nadir for Earth observations, on-board warm blackbody for calibration, and deep space for calibration. The TIRS data will be registered to the OLI data to create radiometrically, geometrically, and terrain-corrected 12-bit LDCM data products. || ", "hits": 75 }, { "id": 10889, "url": "https://svs.gsfc.nasa.gov/10889/", "result_type": "Produced Video", "release_date": "2012-01-04T00:00:00-05:00", "title": "NASA Finds Russian Runoff Freshening Canadian Arctic", "description": "A new NASA and University of Washington study allays concerns that melting Arctic sea ice could be increasing the amount of freshwater in the Arctic enough to have an impact on the global \"ocean conveyor belt\" that redistributes heat around our planet. Read the full press release here: http://www.nasa.gov/topics/earth/features/earth20120104.html || ", "hits": 23 }, { "id": 10812, "url": "https://svs.gsfc.nasa.gov/10812/", "result_type": "Produced Video", "release_date": "2011-10-05T15:00:00-04:00", "title": "Landsat 8 (aka LDCM) Spacecraft Animations and Still Images", "description": "Landsat 8 (formerly known as LDCM, the Landsat Data Continuity Mission), a collaboration between NASA and the U.S. Geological Survey, will provide moderate-resolution (15 meter - 100 meter, depending on spectral frequency) measurements of the Earth's terrestrial and polar regions in the visible, near-infrared, short wave infrared, and thermal infrared. There are two instruments on the spacecraft, the Thermal InfraRed Sensor (TIRS) and the Operational Land Imager (OLI). Landsat 8 continues the nearly 50-year long Landsat land imaging data set. In addition to widespread routine use for land use planning and monitoring on regional to local scales, support of disaster response and evaluations, and water use monitoring, Landsat 8 measurements directly serve NASA research in the focus areas of climate, carbon cycle, ecosystems, water cycle, biogeochemistry, and Earth surface/interior. || ", "hits": 408 } ] }