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1. 1990 Census Data by Block Group for New Orleans, LA, 2016

2016. This polygon shapefile represents 1990 Census Data by Block Group for New Orleans, LA in 2016. 1990 City of New Orleans/Orleans Parish Census data ...

2. Building Footprint for New Orleans, LA, 2018

2018. This polygon shapefile represents Building Footprint for New Orleans, LA in 2018. The shape and orientation of the ground floor of all structures i...

3. California Coastal Wetlands, 2006

2006. California. Department of Fish and Game. Marine Resources Region. This polygon shapefile was derived from the National Oceanic and Atmospheric Administration Coastal Change Analysis Program's Southern Coastal Cali...

4. California Cowcod Conservation Areas, 2003

2003. California. Department of Fish and Game. Marine Resources Region. This polygon shapefile depicts the Cowcod management boundaries based on California Code Title 14, section 150.06. This Conservation Area is part o...

5. Census Data by Block for New Orleans, LA, 1990

1990. This polygon shapefile represents Census Data by Block for New Orleans, LA in 1990. 1990 City of New Orleans/Orleans Parish Census data by block. T...

6. City Council Districts for New Orleans, LA, 2014

2018. This polygon shapefile represents City Council Districts for New Orleans, LA in 2018. New Orleans City Council Districts, effective May 5, 2014. Vo...

7. Designation for New Orleans, LA, 2018

2018. This polygon shapefile represents Designation for New Orleans, LA in 2018. Zoning regulates land use to promote smart growth and preserve the quali...

8. District Names for New Orleans, LA, 2018

2018. This polygon shapefile represents District Names for New Orleans, LA in 2018. The planning districts were created in 1997 or so as the City Plannin...

9. Gomanbunnoichi Chikeizu, Maps Index

1941. Stanford Geospatial Center. This polygon shapefile is an index to 1:50,000 scale maps of Sakhalin, Russia, titled 'Gomanbunnoichi Chikeizu.' This map series was originally pro...

10. Gomanbunnoichi Rusontō zu, Maps Index

1927. Stanford Geospatial Center. This polygon shapefile is an index to 1:50,000 scale maps of Luzon (Philippine Islands), titled '五万分一呂宋島圖 - Gomanbunnoichi Rusontō zu. This map ser...

11. Hyakumanbun no ichi kōkūzu, Maps Index

1944. Stanford Geospatial Center. This polygon shapefile is an index to 1:1,000,000 scale maps of Southeast Asia and Australia, titled 'Hyakumanbun no ichi kōkūzu.’ To create this i...

12. Important Bird Areas: San Francisco Bay Area, 2008

California Audubon Society. The objective of this project was to digitally map the boundaries of Audubon California's Important Bird Areas (IBA). Existing Important Bird Areas...

13. Johnson Creek Restoration Sites 1990-2014

Maya Jarrad. Johnson Creek watershed restoration project locations, areas, and attributes by primary watershed restoration agents from 1990-2014 in the Johnson ...

14. Kūchū shashin sokuzu yōzu Harumaheratō jūmanbun no ichi, Maps Index

1944. Stanford Geospatial Center. This polygon shapefile is an index to 1:100,000 scale maps of Halmahera (Indonesia), titled 'Kūchū shashin sokuzu yōzu Harumaheratō jūmanbun no ich...

15. Landuse: Uganda, 2006

2006. United Nations. Office for the Coordination of Humanitarian Affairs and Uganda Bureau of Statistics (UBOS). This polygon shapefile depicts land use types in Uganda (without populated areas) including forest lands, game reserves, parks, rangelands, and bod...

16. Local Historic Districts for New Orleans, LA, 2018

2018. This polygon shapefile represents Local Historic Districts for New Orleans, LA in 2018, including those districts managed by the Vieux Carr. Commis...

17. Lot for New Orleans, LA, 2018

2018. This polygon shapefile represents lots for New Orleans, LA in 2018. A lot is a primary division of a simultaneous conveyance and generally referred...

18. Lot-2 for New Orleans, LA, 2018

2018. This polygon shapefile represents Lot-2 for New Orleans, LA in 2018. A primary division of a simultaneous conveyance and generally referred to as b...

19. Manshū Nijūmanbunnoichi Zu, Maps Index

1932. Stanford Geospatial Center. This polygon shapefile is an index to 1:200,000 scale maps of Manchuria, China, titled 'Manshū Nijūmanbunnoichi Zu.' This map series was originally...

20. Market Value Analysis for New Orleans, LA, 2018

2018. This polygon shapefile represents Market Value Analysis for New Orleans, LA in 2018. It is based upon Normative Assumptions when Analyzing Markets....

21. Mōko hyakumanbun no ichi zu, Maps Index

1941. Stanford Geospatial Center. This polygon shapefile is an index to 1:1,000,000 scale maps of Mongolia, titled 'Mōko hyakumanbun no ichi zu: Rohan kaibyō -- 蒙古百万分一圖: 露版改描. ’ Thi...

22. Neighborhood Area Boundary for New Orleans, LA, 2018

2018. This polygon shapefile represents Neighborhood Area Boundary for New Orleans, LA in 2018. Census Tracts are small, relatively permanent statistical...

23. New York City Community Health Survey, 2003

2003. Digital Social Science Center (DSSC), Columbia University Libraries and New York (City). Department of Health. New York City Community Health Survey, 2003 is a polygon theme theme representing united hospital fund areas in New York City as of 2003. Statistic...

24. New York City Community Health Survey, 2004

2004. Digital Social Science Center (DSSC), Columbia University Libraries and New York (City). Department of Health. New York City Community Health Survey, 2004 is a polygon theme theme representing united hospital fund areas in New York City as of 2004. Statistic...

25. New York City Community Health Survey, 2005

2005. Digital Social Science Center (DSSC), Columbia University Libraries and New York (City). Department of Health. New York City Community Health Survey, 2005 is a polygon theme theme representing united hospital fund areas in New York City as of 2005. Statistic...

26. New York City Community Health Survey, 2006

2006. Digital Social Science Center (DSSC), Columbia University Libraries and New York (City). Department of Health. New York City Community Health Survey, 2006 is a polygon theme theme representing united hospital fund areas in New York City as of 2006. Statistic...

27. New York City Community Health Survey, 2007

2007. Digital Social Science Center (DSSC), Columbia University Libraries and New York (City). Department of Health. New York City Community Health Survey, 2007 is a polygon theme theme representing united hospital fund areas in New York City as of 2007. Statistic...

28. New York City Super Public Use Microdata Areas (Super-PUMA), 2000

2000. New York (City). Department of City Planning and Digital Social Science Center (DSSC), Columbia University Libraries. New York City Super Public Use Microdata Areas (Super-PUMA), 2000 is a polygon theme representing Super PUMAs in New York City as of the 2000 Census.

29. Nihyakumanbun no ichi kōkūzu, Maps Index

1938. Stanford Geospatial Center. This polygon shapefile is an index to 1:2,000,000 scale maps of East Asia (China, Siberia (Russia), Manchuria (China)), titled 'Nihyakumanbun no ic...

30. Nijūmanbun no ichi teikokuzu, Maps Index

1906. Stanford Geospatial Center. This polygon shapefile is an index to 1:200,000 scale maps of Japan, Kuril Islands (Russia), Taiwan, titled 'Nijūmanbun no ichi teikokuzu -- Teikok...

31. Niman-gosenbun no ichi chikeizu Saipantō, Maps Index

1921. Stanford Geospatial Center. This polygon shapefile is an index to 1:25,000 scale maps of Saipan (Northern Mariana Islands), titled 'Niman-gosenbun no ichi chikeizu.’ This map ...

32. Orleans Parish Boundary for New Orleans, LA, 2018

2018. This polygon shapefile represents the Orleans Parish Boundary for New Orleans, LA in 2018. It is the Orleans Parish (City of New Orleans) boundary ...

33. Orleans Parish Landmass for New Orleans, LA, 2018

2018. This polygon shapefile represents Orleans Parish Landmass for New Orleans, LA in 2018. This file was downloaded on December, 2018 by NYU Data Servi...

34. Parcels for New Orleans, LA, 2018

2018. This polygon shapefile represents parcels for New Orleans, LA in 2018. It shows property ownership boundaries throughout Orleans Parish, as maintai...

35. Planning Districts for New Orleans, LA, 2017

2017. This polygon shapefile represents Planning Districts for New Orleans, LA in 2017. Planning Districts are defined and permanent areas of New Orleans...

36. Police Districts for New Orleans, LA, 2018

2018. This polygon shapefile represents Police Districts for New Orleans, LA in 2018. Eight districts of the New Orleans Police Departments. Each are div...

37. Portland Air Toxics Solutions Data, 2012

Oregon Department of Environmental Quality (www.deq.state.or.us) and Scotti Cosentino Reed; James D. Proctor. Data obtained from DEQ and processed by SR and JDP. "In 2009, DEQ created the Portland Air Toxics Solutions project to work with local communities to develop air toxics reduction strategies for the P...

38. Portland Census Tracts 1970

This shapefile contains the 1970 Portland geometric census tracts. Using CRS: NAD83 Oregon North .

39. Portland Census Tracts 1980

geometry of 1980 Portland Census tracts.

40. Portland Census Tracts 1990

geometric 1990 Portland Census tracts.

41. Portland Census Tracts 2000

geometric 2000 Portland Census tracts.

42. Portland Outdoor Recreation and Conservation Areas

Oregon Metro. Map of recreation and conservation areas (these include parks, natural areas, golf courses, cemeteries, school land, homeowner association parcels)...

43. Portland Residential Zoning-with records

A vector map accompanying the raster of the residential zoning map. Vector map shows the Home Owners' Loan Corporation (HOLC) records of zoning in ...

44. Power Plant Entrainment (Polygons): Southern California, 2008

2008. California. Department of Fish and Game. Marine Resources Region. This polygon shapefile depicts the estimated extent of power plant entrainment in the Southern California Bight. Included in the attributes is scal...

45. Recycling Pickup Days for New Orleans, LA, 2018

2018. This polygon shapefile represents Recycling Pickup Days for New Orleans, LA in 2018. City of New Orleans recycling pickup schedule and areas of ser...

46. Rusontō Gomanbunnoichi Zu, Maps Index

1945. Stanford Geospatial Center. This polygon shapefile is an index to 1:50,000 scale maps of Luzon Island, Philippines, titled 'Rusontō Gomanbunnoichi Zu -- 呂宋島五万分一圖.’ This map se...

47. Sanbyakumanbunnoichi Ōa Kōkūzu, Maps Index

1943. Stanford Geospatial Center. This polygon shapefile is an index to 1:3,000,000 scale maps of Eastern hemisphere (Africa, Asia, and Europe), titled 'Sanbyakumanbunnoichi Ōa Kōkū...

48. School Board Districts for New Orleans, LA, 2018

2018. This polygon shapefile represents School Board Districts for New Orleans, LA in 2018. Orleans Parish School Board Districts as adopted by OPSB on F...

49. Seibu "Nyūginia" heiyō chishi shiryōzu, Maps Index

1943. Stanford Geospatial Center. This polygon shapefile is an index to 1:500,000 scale maps of Papua, Indonesia titled 'Seibu "Nyūginia" heiyō chishi shiryōzu.’ This map series was...

50. Shiberia niman-gosenbun no ichizu, Maps Index

1938. Stanford Geospatial Center. This polygon shapefile is an index to 1:25,000 scale maps of Siberia (Russia), Primorskiĭ kraĭ (Russia), titled 'Shiberia niman-gosenbun no ichizu ...

51. Shinkyō-shō Kanshuku-shō nijūgomanbun no ichi zu, Maps Index

1943. Stanford Geospatial Center. This polygon shapefile is an index to 1:250,000 scale maps of Gansu, Xinjiang, China, titled 'Shinkyō-shō Kanshuku-shō nijūgomanbun no ichi zu.’ Th...

52. Shūsei Nijūmanbun no ichi zu, Maps Index

1889. Stanford Geospatial Center. This polygon shapefile is an index to 1:200,000 scale maps of Japan, titled '[輯製 二十万分一圖] - [Shūsei Nijūmanbun no ichi zu].’ This map series was ori...

53. Solar: Average Monthly and Annual Direct Normal Irradiance Data, One-Degree Resolution of the World from NASA/SSE, 1983-2005

1983. NASA Langley Atmospheric Sciences Data Center. This polygon shapefile represents the average monthly and annual measurements (kWh/m^2/day) of solar direct normal radiation (DNI) for the entire g...

54. Squares for New Orleans, LA, 2018

2018. This polygon shapefile represents squares for New Orleans, LA in 2018. A primary division of a simultaneous conveyance and generally referred to as...

55. Trash Pickup Days for New Orleans, LA, 2018

2018. This polygon shapefile represents Trash Pickup Days for New Orleans, LA in 2018. City of New Orleans trash pickup schedule by areas of service. Thi...

56. Yura Yōsai kinbō, Maps Index

1900. Stanford Geospatial Center. This polygon shapefile is an index to 1:10,000 scale maps of Yura (Japan), titled 'Yura Yōsai kinbō -- 由良要塞近傍.'’ This map series was originally pro...

57. Zoning District for New Orleans, LA, 2018

2018. This polygon shapefile represents zoning districts for New Orleans, LA in 2018. Zoning regulates land use to promote smart growth and preserve the ...

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. 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.

61. 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.

62. 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.

63. 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.

64. 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.

65. 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.

66. 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.

67. 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.

68. 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.

69. 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.

70. 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.

71. 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.

72. 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.

73. 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.

74. 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.

75. 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.

76. 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.

77. 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.

78. 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.

79. 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.

80. 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.

81. 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).

82. 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).

83. 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).

84. 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).

85. 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).

86. 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).

87. Arctic Ice Chart, April 1, 1982

1982. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 1982. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

88. Arctic Ice Chart, April 1, 1984

1984. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 1984. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

89. Arctic Ice Chart, April 1, 1985

1985. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 1985. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

90. Arctic Ice Chart, April 1, 1986

1986. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 1986. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

91. Arctic Ice Chart, April 1, 1996

1996. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 1996. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

92. Arctic Ice Chart, April 1, 1997

1997. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 1997. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

93. Arctic Ice Chart, April 1, 1998

1998. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 1, 1998. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

94. Arctic Ice Chart, April 10, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 10, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

95. Arctic Ice Chart, April 10, 1980

1980. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 10, 1980. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

96. Arctic Ice Chart, April 10, 1985

1985. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 10, 1985. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

97. Arctic Ice Chart, April 10, 1989

1989. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 10, 1989. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

98. Arctic Ice Chart, April 10, 1995

1995. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 10, 1995. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

99. Arctic Ice Chart, April 11, 1969

1969. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 11, 1969. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

100. Arctic Ice Chart, April 11, 1988

1988. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 11, 1988. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).