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1. AWQAF Operated Mosques for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents mosques that are operated by the General Authority of Islamic Affairs and Endowments, or AWQAF, in the Emirate of A... Abu Dhabi Government.

2. Buildings Managed by Abu Dhabi Commercial Properties (ADCP), 2010

2010. This point shapefile represents the coordinate location of buildings managed by Abu Dhabi Commercial Properties (ADCP), including buildings managed... Abu Dhabi Government.

3. Buoys with Sea Lights for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents the buoys with sea lights in the coastal bays and waters of the Emirate of Abu Dhabi . The Name column contains inf... Abu Dhabi Government.

4. Commercial Farms in the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents the coordinate location of commercial farms in the Emirate of Abu Dhabi. The farm names are in Arabic. This layer i... Abu Dhabi Government.

5. Cultural Facilities for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents cultural facilities, such as libraries, museums, festival sites, and historic places for the Emirate of Abu Dhabi. ... Abu Dhabi Government.

6. Food Supply Establishments for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents Abu Dhabi Food Control Authority's Food Supply Customer locations for the emirate of Abu Dhabi. A Food Supply Custo... Abu Dhabi Government.

7. Government Departments of the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents the government department locations of the three regions of the Abu Dhabi Emirate (Abu Dhabi, Al Ain and Western Re... Abu Dhabi Government.

8. Health Centers for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents the location of health centers for the Emirate of Abu Dhabi. This layer is a result of the Abu Dhabi Urban Planning... Abu Dhabi Government.

9. Health Clinics for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents the location of health clinics for the Emirate of Abu Dhabi. This layer is a result of the Abu Dhabi Urban Planning... Abu Dhabi Government.

10. Higher Education Institutes for the Emirate of Abu Dhabi, 2005

2005. This point shapefile represents higher education institutes such as universities and technical schools in the Emirate of Abu Dhabi as per the 2005 ... Abu Dhabi Government.

11. Hospitals for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents the location of hospitals for the Emirate of Abu Dhabi. This layer is a result of the Abu Dhabi Urban Planning Coun... Abu Dhabi Government.

12. Hotel Apartments for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents hotel apartments in the Emirate of Abu Dhabi. This layer is a result of the Abu Dhabi Urban Planning Council (UPC) ... Abu Dhabi Government.

13. Hotels for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents hotels in the Emirate of Abu Dhabi. This layer is a result of the Abu Dhabi Urban Planning Council (UPC) project su... Abu Dhabi Government.

14. Licensed Trading Establishments for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents commercial Licenses that have been geocoded by the Department of Economic Development field inspectors as part of a... Abu Dhabi Government.

15. Pharmaceutical Entities for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents pharmaceutical entities in the Emirate of Abu Dhabi. This layer is a result of the Abu Dhabi Urban Planning Council... Abu Dhabi Government.

16. Polyclinics for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents polyclinics in the Emirate of Abu Dhabi. This layer is a result of the Abu Dhabi Urban Planning Council (UPC) proje... Abu Dhabi Government.

17. Private Schools for the Emirate of Abu Dhabi, 2005

2005. This point shapefile represents private schools in the Emirate of Abu Dhabi as per the 2005 Census carried out by the Statistics Centre Abu Dhabi. ... Abu Dhabi Government.

18. Provision of Health Service for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents the provision of health service Emirate of Abu Dhabi. This layer is a result of the Abu Dhabi Urban Planning Counci... Abu Dhabi Government.

19. Public Schools for the Emirate of Abu Dhabi, 2005

2005. This point shapefile represents public schools in the Emirate of Abu Dhabi as per the 2005 Census carried out by the Statistics Centre Abu Dhabi. T... Abu Dhabi Government.

20. Tourism Kiosks for the Emirate of Abu Dhabi, 2010

2010. This point shapefile represents tourism kiosks for the entire Emirate of Abu Dhabi, which include non-hotel establishments such as holiday/tourism/... Abu Dhabi Government.

21. District Boundaries: Kandahar, Afghanistan, 2004

2004. Afghanistan Information Management Service. This polyline dataset shows the district boundaries in the city of Kandahar, Afghanistan for 2004. There are 10 delineated districts shown in this ... Afghanistan Information Management Service.

22. 7.5-Minute Quad Index, New York State, 2012

2012. This polygon shapefile represents 7.5-Minute Quad Index of New York State for 2012. This shapefile contains all the USGS 7.5-minute quadrangles tha... Albert R. Mann Library.

23. National Elevation Dataset 1/3 arcsec index, 2017

2017. This polygon shapefile represents National Elevation Dataset 1/3 arcsec index of for 2017. This shapefile is an index of all the National Elevation... Albert R. Mann Library.

24. USGS Topographic Maps, New York State, 2000

2000. This polygon shapefile represents USGS Topographic Maps of New York State for 2000. This index provides access to county-wide mosaics of USGS topog... Albert R. Mann Library.

25. Global GIS : Bailey equal-area grid

2003. This dataset is a polyline coverage representing the Bailey Equal-Area Grid. The Bailey Equal-Area Grid is an area-reference grid that uses meridia... American Geological Association.

26. Global GIS : Alaska Faults

1980. This datalayer is a polyline coverage with associated attributes representing geologic faults of Alaska. It is a digital version of the fault featu... American Geological Institute.

27. Global GIS : Alaska Geology

1980. This datalayer is a polygon coverage with associated attributes representing geologic regions of Alaska. It is a digital version of the geology fea... American Geological Institute.

28. Global GIS : Aqueducts, canals, flumes, penstocks

1997. This datalayer is a polyline coverage representing major roads worldwide and was published as part of the USGS Global GIS : global coverage databas... American Geological Institute.

29. Global GIS : Drainage Basins

2003. This datalayer is a polygon coverage representing hydrologic drainage basins located worldwide. The data displayed here is derived from the HYDRO 1... American Geological Institute.

30. Global GIS : Earthquake epicenters (1973-2003)

1973. This datalayer is a point coverage representing earthquake epicenters (1973 through March, 2003). Historical data for this layer were derived from:... American Geological Institute.

31. Global GIS : Gazetteer of populated places, Eastern Hemisphere

2003. This datalayer is a point coverage representing a gazetteer of populated place features located between the Greenwich meridian (0 degrees) and 180 ... American Geological Institute.

32. Global GIS : Gazetteer of populated places, Western Hemisphere (excluding U.S.)

2003. This datalayer is a point coverage representing a gazetteer of populated place features located between the Greenwich meridian (0 degrees) and 180 ... American Geological Institute.

33. Global GIS : Geologic map (excluding the United States)

2003. This datalayer is a polygon coverage showing U.S. Geological Survey defined geologic provinces of the World, excluding the United States. It was pu... American Geological Institute.

34. Global GIS : geologic provinces of the world

2000. This shapefile includes arcs and polygons that describe U.S. Geological Survey defined geologic provinces of the World. Each province has a set of ... American Geological Institute.

35. Global GIS : Geology of the conterminous United States at 1:2,500,000 scale : Faults

1974. This datalayer is a polyline coverage representing geologic faults of the conterminous United States. It is a digital version of the fault features... American Geological Institute.

36. Global GIS : Geology of the conterminous United States at 1:2,500,000 scale : Geology

1974. This datalayer is a polygon coverage representing geologic regions of the conterminous United States. It is a digital version of the geology featur... American Geological Institute.

37. Global GIS : Global 5-degree latitude/longitude grid lines (including geographically significant lines)

2003. This dataset is a polyline coverage representing a 5-degree by 5-degree global latitude and longitude grid, including geographically significant li... American Geological Institute.

38. Global GIS : Global Climate Database : Actual evapotranspiration

1982. This datalayer is a point shapefile that shows long-term (1931-1960) mean monthly values for actual evapotranspiration (AE) (in millimeters) on a g... American Geological Institute.

39. Global GIS : Global Climate Database : Cloud coverage

1982. This datalayer is a point shapefile that shows long-term (1931-1960) mean monthly values for cloud cover on a global terrestrial grid at 0.5 degree... American Geological Institute.

40. Global GIS : Global Climate Database : Potential evapotranspiration

1982. This datalayer is a point shapefile that shows long-term (1931-1960) mean monthly values for potential evapotranspiration (PET) (in millimeters) on... American Geological Institute.

41. Global GIS : Global Climate Database : Precipitation

1982. This datalayer is a point shapefile that shows long-term (1931-1960) mean monthly values for precipitation (in millimeters) on a global terrestrial... American Geological Institute.

42. Global GIS : Global Climate Database : Temperature

1982. This datalayer is a point shapefile that shows long-term (1931-1960) mean monthly values for temperatures (in degrees Celsius) on a global terrestr... American Geological Institute.

43. Global GIS : Hydrography danger points

1997. This datalayer is a point coverage representing worldwide navigational hazards or dangers near ocean and navigable lake coastlines and was publishe... American Geological Institute.

44. Global GIS : Land ice areas

1997. This datalayer is a polygon coverage representing land ice areas (snow fields or ice fields which are on land) worldwide and was published as part ... American Geological Institute.

45. Global GIS : mineral deposit and metallogenic belt maps of the Russian Far East

2003. This datalayer is a point coverage representing mineral deposit and metallogenic belts of the Russian Far East. American Geological Institute.

46. Global GIS : Mineral Resource Data System (MRDS), 1999

1996. This datalayer is a point coverage representing metallic and non-metallic mineral resources worldwide. This data was derived from the Mineral Resou... American Geological Institute.

47. Global GIS : Miscellaneous hydrography point features

1997. This datalayer is a point coverage representing worldwide miscellaneous hydrography point features and was published as part of the USGS Global GIS... American Geological Institute.

48. Global GIS : Miscellaneous industry points

1997. This datalayer is a point coverage representing worldwide miscellaneous industry point features and was published as part of the USGS Global GIS : ... American Geological Institute.

49. Global GIS : Natural resources extraction areas and fishery industrial areas

1997. This datalayer is a polygon coverage representing worldwide locations where natural resources are being extracted from the earth and locations wher... American Geological Institute.

50. Global GIS : Natural resources extraction points

1997. This datalayer is a point coverage representing worldwide locations where natural resources are being extracted from the earth. It was published as... American Geological Institute.

51. Global GIS : Realtime streamgaging stations (2003)

1973. This datalayer is a point coverage representing United States Geological Survey (USGS) realtime streamflow sampling station locations in the United... American Geological Institute.

52. Global GIS : Significant earthquakes (2150 B.C. until 1994 A.D.)

1973. This shapefile includes points which represent locations of significant historical earthquakes worldwide documented from 2150 B.C. until 1994 A.D. ... American Geological Institute.

53. Global GIS : Storage points

1997. This datalayer is a point coverage representing worldwide storage point features and was published as part of the USGS Global GIS : global coverage... American Geological Institute.

54. Global GIS : United States gazetteer, populated places

2003. This datalayer is point coverage gazetteer representing populated places in the United States and its territories. It contains official names and l... American Geological Institute.

55. Global GIS : Utility point features

1997. This datalayer is a point coverage representing worldwide utility point features and was published as part of the USGS Global GIS : global coverage... American Geological Institute.

56. Global GIS : volcanoes of the world ; volcano basic data

2003. This datalayer is point coverage containing basic geographic and geologic information for worldwide volcanoes thought to have been active in the la... American Geological Institute.

57. Global GIS : World gazetteer (major cities)

2003. This datalayer is a point coverage representing major cities worldwide based on information from the GNS (GEOnet Names Server). For global (non-U.S... American Geological Institute.

58. Accurately Located Masonry Wall Remains: Paris, 950-1797

950. Lallau, Etienne. This point shapefile contains locations of masonry wall remains in Paris based on archaeological references. These remains have been precisely loca... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

59. Ancient, Medieval, and Modern Walls, Paris, 308-1970

308. Gherdevich, Davide, Noizet, Hélène, Faucherre, Nicolas, 1957-, and Bethe, Anne-Laure. This polygon shapefile represents walls erected in the city of Paris, France, starting from the Roman Era until the 18th century (308-1970). This l... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

60. Building Prohibition Boundaries, Paris, 17th to 18th Centuries

1638. Prodhomme, Marie. This line shapefile represents the boundaries used to delineate urban expansion (sprawl) limits around Paris, France during the 17th and 18th centu... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

61. Building Prohibition Boundary Markers, Paris, 17th to 18th Centuries

1601. Prodhomme, Marie. This point shapefile represents the location of boundary markers used to enforce building and expansion limits around Paris, France in the 17th and... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

62. Butchers from the end of the Middle Ages to the late 18th century, Paris

1100. Laurent, Mirlou and Descamps, Benoit . This point shapefile contains the locations of butchers in Paris, France from the end of the Middle Ages until the late 18th century. This layer in... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

63. Censives, Paris, France (According to Plans Terriers), 18th Century

1701. Bove, Boris. This polygon shapefile contains the censives (territories ruled by a lord) in Paris, France during the 18th century. Source data were gathered from... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

64. Flooding, Seine River, Paris, 1740

1740. Mirlou, Laurent. This polygon shapefile shows the areas innundated by the centinnial flood of the Seine River in Paris, France during 1740. This layer distinguishes... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

65. Flooding, Seine River, Paris, 1910

1910. Mirlou, Laurent. This polygon shapefile shows the areas innundated by the centinnial flood of the Seine River in Paris, France during 1910. This layer distinguishes... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

66. Inaccurately Located Masonry Wall Remains, Paris, 1190-1678

1190. Lallau, Étienne. This point shapefile contains imprecise locations of masonry wall remains in Paris based on archaeological references. The points contained in this... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

67. Low flood zones of the Pre-Urban Land Relief, Paris, 1967

Costa, Laurent. This polygon shapefile shows the areas of Paris considered floodplains as defined in the Geological Atlas of 1967 by Vincent Krier. In this map, lo... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

68. Paleorelief Contour Lines, Paris, France, 1967

1967. Costa, Laurent. This line shapefile represents contour lines in Paris, France as defined in the Geological Atlas of 1967 by Vincent Krier.The ALPAGE programme aims... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

69. Paris Churches from Late Antiquity to 1790

816. Lallau, Étienne. This point shapefile represents churches in Paris from the early Middle Ages (816) until the French Revolution (1790). Some buildlings contained in... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

70. Parish Tax Boundaries, Paris, 1300

1300. Bourlet, Caroline. This polygon shapefile represents tax parish boundaries within Paris, France in 1300.The ALPAGE programme aims to provide collaborative tools for t... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

71. Parish Tax Sub-Districts, Paris, 1300

Bourlet, Caroline. This polygon shapefile represents tax parish sub-district boundaries within Paris, France in 1300.The ALPAGE programme aims to provide collaborativ... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

72. Plot Prospecting Zones of the Carolingian Wall, Paris, 9th to 12th Centuries

801. Noizet, Hélène. This polygon shapefile represents prospecting plots used to define the layout of the Carolignian Wall in Paris, France. Archaeological and textual ... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

73. Road Network, Paris, France, 1300

1300. Bourlet, Caroline and Bethe, Anne-Laure. This line shapefile represents the road network of Paris as it existed in 1300. The ALPAGE programme aims to provide collaborative tools for the Hu... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

74. Road Network, Paris, France, 1380

1380. Bourlet, Caroline and Bethe, Anne-Laure. This line shapefile represents the road network of Paris as it existed in 1380. The ALPAGE programme aims to provide collaborative tools for the Hu... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

75. Streams and Watersheds, Paris, 1740

1740. Mirlou, Laurent. This line shapefile depicts streams and watersheds around Paris as represented in the watershed plan created by Phillippe Buache in 1740.The ALPAGE... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

76. Suburban Road Networks, Paris, 1724-1729

1724. Prodhomme, Marie. This line shapefile represents road networks of suburban Paris according to 1724-1729 boundaries. Royal power attempted to strengthen the control o... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

77. Urban Areas of the Middle Ages, Paris, France, 1300

1300. Bourlet, Caroline and Bethe, Anne-Laure. This polygon shapefile represents the boundaries of three urban areas around Paris, France as they existed during the Middle Ages (ca. 1300). These... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

78. Urban Blocks, Paris, 1380

1380. Bourlet, Caroline. This polygon shapefile displays the boundaries of land plots within Paris around the year 1380. These data were derived from the National Center fo... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

79. Urban Blocks, Paris, 1553

1553. Gherdevich, Davide and Noizet, Hélène. This polygon shapefile contains the boundaries of urban blocks in Paris during 1553. These data were taken form the Basel plan and characterize urb... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

80. Urban Blocks, Paris, 1652

1652. Gherdevich, Davide. This polygon shapefile contains the boundaries of urban blocks in Paris during 1652. These data were taken form the Gomboust plan and characterize ... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

81. Vasserot Addresses (1810-1836)

Bethe, Anne-Laure. This point shapefile contains the street address according to the block plans of Vasserot.The ALPAGE programme aims to provide collaborative tools ... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

82. Vasserot Arrondissements (1810-1836)

1810. Bethe, Anne-Laure. This polygon shapefile contains the boundaries of 12 arrondissements in Paris, France, as represented in Philibert Vasserot's Atlas of Paris (1810-... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

83. Vasserot Arrondissments (1810-1836)

1810. Bethe, Anne-Laure. This polygon shapefile represents arrondissment boundaries of Paris, France derived from Philibert Vasserot's Atlas of Paris (1810-1836). The ALPAG... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

84. Vasserot Buildings (1810-1860)

Bethe, Anne-Laure. This polygon shapefile contains building footprints informed by the Vasserot Plan (1810-1836). Built and non-built areas were identified using diff... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

85. Vasserot Censives (1810-1836)

Bove, Boris. This polygon shapefile contains the censives (territories ruled by lords) in Paris, France as represented in Philibert Vasserot's Atlas of Paris (1... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

86. Vasserot Hydrography (1810-1836)

1810. Rouet, Paul. This polygon shapefile represents hydrographic features contained in Philibert Vasserot's Atlas of Paris (1810-1836). The ALPAGE programme aims to ... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

87. Vasserot Parcels (1810-1836)

1810. Bethe, Anne-Laure. This polygon shapefile represents parcel boundaries derived from Philibert Vasserot's Atlas of Paris (1810-1836). Parcel boundaries were vectorized... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

88. Vasserot Plots (1810-1836)

1810. Bethe, Anne-Laure. This polygon shapefile contains the boundaries of land plots as represented in Philibert Vasserot's Atlas of Paris (1810-1836). Vasserot's 19th cen... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

89. Vasserot 'Quartiers' (Neighbourhoods) (1790-1860)

1790. Bethe, Anne-Laure. This polygon shapefile contains the neighbourhood (quartier) boundaries as depicted in Philibert Vasserot's 19th century atlas of Paris. Prior to 1... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

90. Vasserot Road Network (1810-1836)

1810. Rouet, Paul. This polygon shapefile represents the road network of Paris derived from Philibert Vasserot's Atlas of Paris (1810-1836). To create these data, roa... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

91. Vasserot Road Network (1810-1836)

1810. Bethe, Anne-Laure. This line shapefile contains the road network of Paris, France, derived from Philibert Vasserot's Atlas of Paris (1810-1836). Roads were vectorized... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

92. Wall Towers and Gates, Paris, 13th to the 17th Century

300. Lallau, Étienne and Noizet, Hélène. This point shapefile contains the locations of historic wall towers and gates in Paris from the 13th to the 17th centuries.The ALPAGE programme aim... Analyse Diachronique de l'espace Urbain Parisien: Approche Geomatique.

93. Cable and Pipeline Areas, Northeast United States, 1995-2011

1995. Applied Science Associates. This polygon shapefile identifies locations that contain one or more submarine cable and/or pipeline areas in the Northeastern United States. This ... Applied Science Associates.

94. Arctic Ice Chart, April 1, 1966

1966. Arctic Climate System (ACSYS). This line shapefile contains ice observations in the Arctic region for April 1, 1966. This layer is part of the Arctic Climate System (ACSYS) Histo... Arctic Climate System (ACSYS).

95. Arctic Ice Chart, April 1, 1967

1967. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 1967. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

96. Arctic Ice Chart, April 1, 1968

1968. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 1968. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

97. Arctic Ice Chart, April 1, 1970

1970. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 1970. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

98. Arctic Ice Chart, April 1, 1971

1971. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 1971. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

99. Arctic Ice Chart, April 1, 1974

1974. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 1974. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

100. Arctic Ice Chart, April 1, 1977

1977. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 1977. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).