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Advanced Spaceborne Thermal Emission and Reflection Radiometer

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tile structure as V1 and V2, with 30-meter postings and 1 x 1 degree tiles. Version 3 is claimed to have significant improvements over the previous release. Automated processing of 2.3 million scenes from the ASTER archive was used to create the ASTER GDEM, which included stereo-correlation to create individual scene-based ASTER DEMs, masking to remove cloudy pixels, stacking all cloud-screened DEMs, removing residual bad values and outliers, averaging selected data to create final pixel values.
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water bodies. However, one reviewer still regards the Aster version 2 dataset, although showing 'a considerable improvement in the effective level of detail', to still be regarded as 'experimental or research grade' due to presence of artefacts. A 2014 study showed that over rugged mountainous terrain the ASTER version 2 data set can be a more accurate representation of the ground than the SRTM elevation model.
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During October 2011, version 2 of Global Digital Elevation Model was publicly released. This is considered an improvement upon version 1. These improvements include increased horizontal and vertical accuracy, better horizontal resolution, reduced presence of artifacts, and more realistic values over
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The improved GDEM V3 adds additional stereo-pairs, improving coverage and reducing the occurrence of artifacts. The refined production algorithm provides improved spatial resolution, increased horizontal and vertical accuracy. The ASTER GDEM V3 maintains the GeoTIFF format and the same gridding and
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As of 2 April 2016, the entire catalogue of ASTER image data became publicly available online at no cost. It can be downloaded with a free registered account from either NASA's Earth Data Search delivery system or from the
520:, covered approximately 80% of the Earth's surface, with a global resolution of 90 meters, and a resolution of 30 meters over the USA. The GDEM covers the planet from 83 degrees North to 83 degrees South (surpassing 113:
In April 2008, the SWIR detectors of ASTER began malfunctioning and were publicly declared non-operational by NASA in January 2009. All SWIR data collected after 1 April 2008 has been marked as unusable.
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Despite the high nominal resolution, however, some reviewers have commented that the true resolution is considerably lower, and not as good as that of SRTM data, and serious artifacts are present.
524:'s coverage of 56 °S to 60 °N), becoming the first earth mapping system that provides comprehensive coverage of the polar regions. It was created by compiling 1.3 million 1130:"Comparison of free high-resolution digital elevation data sets (ASTER GDEM2, SRTM v2.1/v4.1) and validation against accurate heights from the Australian National Gravity Database" 1813: 1295: 687: 516:(METI), the Global Digital Elevation Model is the most complete mapping of the earth ever made, covering 99% of its surface. The previous most comprehensive map, NASA's 862: 66: 1941: 1867: 1129: 1019:"Comparison and validation of recent freely-available ASTER-GDEM ver1, SRTM ver4.1 and GEODATA DEM-9S ver3 digital elevation models over Australia" 1554: 1288: 513: 919: 1018: 1433: 541:
Some of these limitations have been confirmed by METI and NASA, who point out that the version 1 of the GDEM product is "research grade".
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On 29 June 2009, the Global Digital Elevation Model (GDEM) was released to the public. A joint operation between
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techniques, with terrain elevation measurements taken globally at 30-meter (98 ft) intervals.
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of images ranges between 15 and 90 meters. ASTER data is used to create detailed
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Nikolakopoulos, K. G.; Kamaratakis, E. K; Chrysoulakis, N. (10 November 2006).
1165: 1051: 1042: 946: 866: 174: 103: 37: 32: 17: 954: 121:(GDEM) is available at no charge to users worldwide via electronic download. 1469: 1462: 1390: 1273: 727: 585: 1670: 1353: 1332: 1226: 836: 91: 1261: 1111: 1085: 896: 780: 1792: 1569: 1359: 1687: 1528: 741: 583: 490: 187: 139: 65: 31: 1852: 1564: 806: 776: 525: 521: 509: 499:), inaccuracies and errors of the latter are indicated by arrows 203: 126: 60: 1277: 1244: 714:"NASA, Japan Make ASTER Earth Data Available At No Cost | NASA" 78:
ASTER provides high-resolution images of Earth in 14 different
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Advanced Spaceborne Thermal Emission and Reflection Radiometer
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in 1999. It has been collecting data since February 2000.
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Japanese imaging device aboard NASA's Terra satellite
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(2010). 688:"METI and NASA Release Version 2 ASTER Global DEM" 682: 680: 644:"Satellite image shows Kincade fire burn scar" 1289: 8: 863:"NASA, Japan publish detailed map of Earth" 1296: 1282: 1274: 1164: 1050: 857: 855: 610:ASTER v3 was released on August 5, 2019. 36:ASTER image draped over terrain model of 1082:"METI and NASA Release ASTER Global DEM" 597:terrain based on ASTER Global DEMv2 data 528:images taken by ASTER using single-pass 407: 298: 257: 159: 927:International Journal of Remote Sensing 767: 765: 634: 624:Shuttle Radar Topography Mission (SRTM) 514:Ministry of Economy, Trade and Industry 826: 824: 642:Wigglesworth, Alex (6 November 2019). 144:ASTER false-colour satellite image of 1434:Multi-angle imaging spectroradiometer 7: 1227:"ASTER Global Digital Elevation Map" 1137:Australian Journal of Earth Sciences 1023:Australian Journal of Earth Sciences 773:"ASTER Global Digital Elevation Map" 487:ASTER Global Digital Elevation Model 1942:Earth observation satellite sensors 832:"Most complete earth map published" 1446:Tropospheric Emission Spectrometer 25: 1836:Mars Astrobiology Explorer-Cacher 1783:Nancy Grace Roman Space Telescope 1108:"Release of ASTER GDEM Version 2" 1901:Space Flight Operations Facility 1693:Shuttle Radar Topography Mission 998:from the original on 31 May 2009 992:"Virtual Earth Products Reviews" 552: 518:Shuttle Radar Topography Mission 129:Earth Explorer delivery system. 1750:Wide Field and Planetary Camera 1205:"ASTER Digital Elevation Data" 869:. 30 June 2009. Archived from 779:. 29 June 2009. Archived from 148:, showing evidence of a large 1: 1830:Astrobiology Field Laboratory 1262:Official NASA ASTER GDEM Site 1257:Official METI ASTER GDEM Site 495:SRTM3 vs. ASTER1 comparison ( 146:2010 eruption of Mount Merapi 1896:Near-Earth Asteroid Tracking 1756:Wide Field Infrared Explorer 1440:Soil Moisture Active Passive 1343:Atmospheric infrared sounder 1157:10.1080/08120099.2014.884983 1128:Rexer, M.; Hirt, C. (2014). 237: 217: 1415:Mars Reconnaissance Orbiter 100:maps of surface temperature 1958: 1873:Table Mountain Observatory 1207:. Viewfinder Panoramas, UK 1937:Space science experiments 1886: 1788:Near-Earth Asteroid Scout 1699:Solar Mesosphere Explorer 1378:Large Binocular Telescope 1305:Jet Propulsion Laboratory 1043:10.1080/08120091003677553 947:10.1080/01431160600835853 388: 279: 1878:Solar System Ambassadors 1705:Spaceborne Imaging Radar 84:electromagnetic spectrum 74:(Arabia's Empty Quarter) 1863:NASA Deep Space Network 1711:Spitzer Space Telescope 1631:Mars Exploration Rovers 1422:Mars Science Laboratory 1349:Deep Space Atomic Clock 1203:de Ferranti, Jonathan. 119:Digital Elevation Model 55:instrument onboard the 1927:2008 disestablishments 1428:Microwave limb sounder 619:Ground sample distance 598: 500: 157: 75: 40: 1846:Related organizations 589: 494: 218:Visible green/yellow 156:south of Mount Merapi 143: 69: 35: 1891:JPL Science Division 1625:Mars Global Surveyor 1593:Mars Climate Orbiter 299:Short-wave infrared 1922:2000 establishments 1267:3 July 2009 at the 1149:2014AuJES..61..213R 1035:2010AuJES..57..337H 939:2006IJRS...27.4819N 694:on 21 December 2013 1252:NASA site on ASTER 1166:20.500.11937/38264 1052:20.500.11937/43846 728:"Earthdata Search" 599: 564:. You can help by 501: 408:Long-wave infrared 158: 76: 41: 1909: 1908: 1868:Goldstone Complex 1823:Canceled missions 1802:Proposed missions 1619:Mars Polar Lander 933:(21): 4819–4838. 756:"Characteristics" 649:Los Angeles Times 582: 581: 482: 481: 117:The ASTER Global 110:, and elevation. 16:(Redirected from 1949: 1771:Planned missions 1762:Lunar Flashlight 1373:Keck observatory 1312:Current missions 1298: 1291: 1284: 1275: 1248: 1247: 1245:Official website 1231: 1230: 1223: 1217: 1216: 1214: 1212: 1200: 1194: 1193: 1191: 1189: 1183: 1177:. Archived from 1168: 1134: 1125: 1116: 1115: 1110:. Archived from 1104: 1098: 1097: 1095: 1093: 1084:. Archived from 1078: 1072: 1071: 1069: 1067: 1054: 1014: 1008: 1007: 1005: 1003: 988: 982: 981: 979: 977: 971: 965:. Archived from 924: 915: 909: 908: 906: 904: 899:on 27 April 2009 895:. Archived from 893:"What is ASTER?" 889: 883: 882: 880: 878: 859: 850: 849: 847: 845: 828: 819: 818: 816: 814: 799: 793: 792: 790: 788: 769: 760: 759: 752: 746: 745: 738: 732: 731: 724: 718: 717: 716:. 31 March 2016. 710: 704: 703: 701: 699: 684: 675: 674: 667: 661: 660: 658: 656: 639: 588: 577: 574: 556: 549: 160: 150:pyroclastic flow 51:) is a Japanese 21: 1957: 1956: 1952: 1951: 1950: 1948: 1947: 1946: 1912: 1911: 1910: 1905: 1882: 1841: 1818: 1797: 1766: 1613:Mars Pathfinder 1490:Cassini-Huygens 1477: 1457:Voyager program 1307: 1302: 1269:Wayback Machine 1243: 1242: 1239: 1234: 1225: 1224: 1220: 1210: 1208: 1202: 1201: 1197: 1187: 1185: 1181: 1132: 1127: 1126: 1119: 1114:on 29 May 2009. 1106: 1105: 1101: 1091: 1089: 1080: 1079: 1075: 1065: 1063: 1016: 1015: 1011: 1001: 999: 990: 989: 985: 975: 973: 972:on 21 July 2011 969: 922: 917: 916: 912: 902: 900: 891: 890: 886: 876: 874: 861: 860: 853: 843: 841: 830: 829: 822: 812: 810: 803:"ASTER Imagery" 801: 800: 796: 786: 784: 771: 770: 763: 754: 753: 749: 742:"EarthExplorer" 740: 739: 735: 726: 725: 721: 712: 711: 707: 697: 695: 686: 685: 678: 669: 668: 664: 654: 652: 641: 640: 636: 632: 608: 584: 578: 572: 569: 562:needs expansion 547: 506: 489: 409: 191: 183: 172: 138: 132: 86:, ranging from 70:ASTER image of 57:Terra satellite 28: 23: 22: 15: 12: 11: 5: 1955: 1953: 1945: 1944: 1939: 1934: 1929: 1924: 1914: 1913: 1907: 1906: 1904: 1903: 1898: 1893: 1887: 1884: 1883: 1881: 1880: 1875: 1870: 1865: 1860: 1855: 1849: 1847: 1843: 1842: 1840: 1839: 1833: 1826: 1824: 1820: 1819: 1817: 1816: 1811: 1805: 1803: 1799: 1798: 1796: 1795: 1790: 1785: 1780: 1778:Europa Clipper 1774: 1772: 1768: 1767: 1765: 1764: 1759: 1753: 1747: 1742: 1735: 1733:TOPEX/Poseidon 1730: 1725: 1720: 1713: 1708: 1702: 1696: 1690: 1685: 1678: 1673: 1668: 1663: 1656: 1651: 1650: 1649: 1641: 1628: 1621: 1616: 1609: 1602: 1596: 1589: 1584: 1577: 1572: 1567: 1562: 1557: 1552: 1545: 1544: 1543: 1531: 1526: 1521: 1514: 1507: 1500: 1493: 1485: 1483: 1479: 1478: 1476: 1475: 1474: 1473: 1466: 1454: 1449: 1443: 1437: 1431: 1425: 1419: 1411: 1410: 1409: 1401: 1388: 1381: 1375: 1370: 1363: 1356: 1351: 1346: 1340: 1335: 1330: 1323: 1315: 1313: 1309: 1308: 1303: 1301: 1300: 1293: 1286: 1278: 1272: 1271: 1259: 1254: 1249: 1238: 1237:External links 1235: 1233: 1232: 1218: 1195: 1184:on 7 June 2016 1117: 1099: 1088:on 29 May 2009 1073: 1029:(3): 337–347. 1009: 983: 910: 884: 873:on 4 July 2009 851: 840:. 30 June 2009 820: 809:. 29 June 2009 794: 783:on 3 July 2009 761: 747: 733: 719: 705: 676: 662: 633: 631: 628: 627: 626: 621: 607: 604: 580: 579: 559: 557: 546: 543: 505: 502: 488: 485: 480: 479: 476: 473: 472:10.950–11.650 470: 467: 463: 462: 459: 456: 455:10.250–10.950 453: 450: 446: 445: 442: 439: 436: 433: 429: 428: 425: 422: 419: 416: 412: 411: 410:or thermal IR 406: 403: 400: 397: 394: 390: 389: 386: 385: 382: 379: 376: 373: 369: 368: 365: 362: 359: 356: 352: 351: 348: 345: 342: 339: 335: 334: 331: 328: 325: 322: 318: 317: 314: 311: 308: 305: 301: 300: 297: 294: 291: 288: 285: 281: 280: 277: 276: 273: 270: 267: 264: 260: 259: 258:Near infrared 256: 253: 250: 247: 244: 240: 239: 236: 233: 230: 229:0.630 - 0.690 227: 224: 220: 219: 216: 213: 210: 207: 201: 197: 196: 193: 185: 178: 167: 164: 137: 134: 53:remote sensing 26: 24: 18:ASTER (sensor) 14: 13: 10: 9: 6: 4: 3: 2: 1954: 1943: 1940: 1938: 1935: 1933: 1930: 1928: 1925: 1923: 1920: 1919: 1917: 1902: 1899: 1897: 1894: 1892: 1889: 1888: 1885: 1879: 1876: 1874: 1871: 1869: 1866: 1864: 1861: 1859: 1856: 1854: 1851: 1850: 1848: 1844: 1837: 1834: 1831: 1828: 1827: 1825: 1821: 1815: 1812: 1810: 1809:Europa Lander 1807: 1806: 1804: 1800: 1794: 1791: 1789: 1786: 1784: 1781: 1779: 1776: 1775: 1773: 1769: 1763: 1760: 1757: 1754: 1751: 1748: 1746: 1743: 1741: 1740: 1736: 1734: 1731: 1729: 1726: 1724: 1721: 1719: 1718: 1714: 1712: 1709: 1706: 1703: 1700: 1697: 1694: 1691: 1689: 1686: 1684: 1683: 1679: 1677: 1674: 1672: 1669: 1667: 1664: 1662: 1661: 1657: 1655: 1652: 1648: 1646: 1642: 1640: 1638: 1634: 1633: 1632: 1629: 1627: 1626: 1622: 1620: 1617: 1615: 1614: 1610: 1608: 1607: 1606:Mars Observer 1603: 1600: 1599:Mars Cube One 1597: 1595: 1594: 1590: 1588: 1585: 1583: 1582: 1578: 1576: 1573: 1571: 1568: 1566: 1563: 1561: 1558: 1556: 1553: 1551: 1550: 1546: 1542: 1539: 1538: 1537: 1536: 1532: 1530: 1527: 1525: 1522: 1520: 1519: 1515: 1513: 1512: 1508: 1506: 1505: 1501: 1499: 1498: 1494: 1492: 1491: 1487: 1486: 1484: 1482:Past missions 1480: 1472: 1471: 1467: 1465: 1464: 1460: 1459: 1458: 1455: 1453: 1450: 1447: 1444: 1441: 1438: 1435: 1432: 1429: 1426: 1423: 1420: 1417: 1416: 1412: 1408: 1406: 1402: 1400: 1398: 1394: 1393: 1392: 1389: 1387: 1386: 1382: 1379: 1376: 1374: 1371: 1369: 1368: 1364: 1362: 1361: 1357: 1355: 1352: 1350: 1347: 1344: 1341: 1339: 1336: 1334: 1331: 1329: 1328: 1324: 1322: 1321: 1317: 1316: 1314: 1310: 1306: 1299: 1294: 1292: 1287: 1285: 1280: 1279: 1276: 1270: 1266: 1263: 1260: 1258: 1255: 1253: 1250: 1246: 1241: 1240: 1236: 1228: 1222: 1219: 1206: 1199: 1196: 1180: 1176: 1172: 1167: 1162: 1158: 1154: 1150: 1146: 1142: 1138: 1131: 1124: 1122: 1118: 1113: 1109: 1103: 1100: 1087: 1083: 1077: 1074: 1062: 1058: 1053: 1048: 1044: 1040: 1036: 1032: 1028: 1024: 1020: 1013: 1010: 997: 993: 987: 984: 968: 964: 960: 956: 952: 948: 944: 940: 936: 932: 928: 921: 914: 911: 898: 894: 888: 885: 872: 868: 864: 858: 856: 852: 839: 838: 833: 827: 825: 821: 808: 804: 798: 795: 782: 778: 774: 768: 766: 762: 757: 751: 748: 743: 737: 734: 729: 723: 720: 715: 709: 706: 693: 689: 683: 681: 677: 672: 666: 663: 651: 650: 645: 638: 635: 629: 625: 622: 620: 617: 616: 615: 611: 605: 603: 596: 595:Penang Island 592: 587: 576: 567: 563: 560:This section 558: 555: 551: 550: 544: 542: 539: 536: 534: 531: 527: 523: 519: 515: 511: 503: 498: 493: 486: 484: 477: 474: 471: 468: 465: 464: 460: 457: 454: 451: 448: 447: 443: 440: 437: 434: 431: 430: 426: 423: 420: 417: 414: 413: 404: 401: 398: 395: 392: 391: 387: 383: 380: 377: 374: 371: 370: 366: 363: 360: 357: 354: 353: 349: 346: 343: 340: 337: 336: 332: 329: 326: 323: 320: 319: 315: 312: 309: 306: 303: 302: 295: 292: 289: 286: 283: 282: 278: 274: 271: 268: 265: 262: 261: 254: 251: 248: 245: 242: 241: 234: 231: 228: 225: 222: 221: 214: 211: 209:0.520 - 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The 90:to thermal 1932:Radiometry 1916:Categories 1541:spacecraft 1407:helicopter 1143:(2): 213. 867:Canada.com 655:7 November 630:References 181:Resolution 170:Wavelength 152:along the 104:emissivity 96:resolution 38:Mount Etna 1524:Explorers 1470:Voyager 2 1463:Voyager 1 1405:Ingenuity 1391:Mars 2020 1061:140651372 955:0143-1161 606:Version 3 545:Version 2 504:Version 1 497:Île d'Yeu 275:Backward 192:Backward 102:of land, 1723:Surveyor 1717:Stardust 1671:QuikSCAT 1581:Magellan 1560:Herschel 1354:GRACE-FO 1333:ACRIMSAT 1265:Archived 1188:24 April 996:Archived 837:BBC News 92:infrared 1858:Caltech 1838:(MAX-C) 1814:FINESSE 1793:SPHEREx 1739:Ulysses 1682:Rosetta 1666:Pioneer 1660:Phoenix 1601:(MarCO) 1587:Mariner 1570:Jason-1 1549:Genesis 1535:Galileo 1360:InSight 1175:3783826 1145:Bibcode 1031:Bibcode 963:1939968 935:Bibcode 813:30 June 787:30 June 206:_Band1 88:visible 82:of the 1758:(WIRE) 1752:(WFPC) 1745:Viking 1695:(SRTM) 1688:Seasat 1676:Ranger 1637:Spirit 1575:Kepler 1442:(SMAP) 1436:(MISR) 1345:(AIRS) 1327:Psyche 1320:Euclid 1173:  1092:1 July 1059:  1002:1 July 976:1 July 961:  953:  903:1 July 877:1 July 844:1 July 478:Nadir 461:Nadir 444:Nadir 427:Nadir 405:Nadir 384:Nadir 367:Nadir 350:Nadir 333:Nadir 316:Nadir 296:Nadir 255:Nadir 235:Nadir 215:Nadir 166:Label 1832:(AFL) 1728:SVLBI 1707:(SIR) 1701:(SME) 1654:NSCAT 1647:rover 1639:rover 1555:GRACE 1529:GALEX 1448:(TES) 1430:(MLS) 1424:(MSL) 1418:(MRO) 1399:rover 1380:(LBT) 1338:ASTER 1182:(PDF) 1171:S2CID 1133:(PDF) 1066:5 May 1057:S2CID 970:(PDF) 959:S2CID 923:(PDF) 188:Nadir 163:Band 80:bands 49:ASTER 1853:NASA 1565:IRAS 1497:Dawn 1452:SWOT 1367:Juno 1213:2013 1190:2014 1094:2009 1068:2012 1004:2009 978:2009 951:ISSN 905:2009 879:2009 846:2009 815:2009 807:NASA 789:2009 777:NASA 700:2013 657:2019 526:VNIR 522:SRTM 510:NASA 466:B14 449:B13 432:B12 415:B11 393:B10 263:B3B 243:B3N 204:VNIR 184:(m) 127:USGS 61:NASA 43:The 1161:hdl 1153:doi 1047:hdl 1039:doi 943:doi 593:of 568:. 475:90 458:90 441:90 424:90 402:90 381:30 372:B9 364:30 355:B8 347:30 338:B7 330:30 321:B6 313:30 304:B5 293:30 284:B4 272:15 252:15 232:15 223:B2 212:15 200:B1 1918:: 1169:. 1159:. 1151:. 1141:61 1139:. 1135:. 1120:^ 1055:. 1045:. 1037:. 1027:57 1025:. 1021:. 994:. 957:. 949:. 941:. 931:27 929:. 925:. 865:. 854:^ 834:. 823:^ 805:. 775:. 764:^ 679:^ 646:. 190:or 177:) 175:μm 106:, 1297:e 1290:t 1283:v 1229:. 1215:. 1192:. 1163:: 1155:: 1147:: 1096:. 1070:. 1049:: 1041:: 1033:: 1006:. 980:. 945:: 937:: 907:. 881:. 848:. 817:. 791:. 758:. 744:. 730:. 702:. 673:. 659:. 575:) 571:( 173:( 47:( 20:)

Index

ASTER (sensor)

Mount Etna
remote sensing
Terra satellite
NASA

Rub' al Khali
bands
electromagnetic spectrum
visible
infrared
resolution
maps of surface temperature
emissivity
reflectance
Digital Elevation Model
USGS

2010 eruption of Mount Merapi
pyroclastic flow
Gendol River
Wavelength
μm
Resolution
Nadir
VNIR

Île d'Yeu
NASA

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