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1. 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).

2. Arctic Ice Chart, April 13, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 13, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

3. Arctic Ice Chart, April 17, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 17, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

4. Arctic Ice Chart, April 20, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 20, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

5. Arctic Ice Chart, April 24, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 24, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

6. Arctic Ice Chart, April 27, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 27, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

7. Arctic Ice Chart, April 4, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 4, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

8. Arctic Ice Chart, April 6, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for April 6, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

9. Arctic Ice Chart, August 10, 1972

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

10. Arctic Ice Chart, August 12, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 12, 1972. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

11. Arctic Ice Chart, August 14, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 14, 1972. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

12. Arctic Ice Chart, August 21, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 21, 1972. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

13. Arctic Ice Chart, August 24, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 24, 1972. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

14. Arctic Ice Chart, August 29, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 29, 1972. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

15. Arctic Ice Chart, August 3, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 3, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

16. Arctic Ice Chart, August 31, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 31, 1972. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

17. Arctic Ice Chart, August 7, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for August 7, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

18. Arctic Ice Chart, December 11, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 11, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

19. Arctic Ice Chart, December 14, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 14, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

20. Arctic Ice Chart, December 18, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 18, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

21. Arctic Ice Chart, December 22, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 22, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

22. Arctic Ice Chart, December 28, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 28, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

23. Arctic Ice Chart, December 4, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 4, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

24. Arctic Ice Chart, December 7, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for December 7, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

25. Arctic Ice Chart, February 10, 1972

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

26. Arctic Ice Chart, February 15, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 15, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

27. Arctic Ice Chart, February 18, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 18, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

28. Arctic Ice Chart, February 21, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 21, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

29. Arctic Ice Chart, February 28, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 28, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

30. Arctic Ice Chart, February 3, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for February 3, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

31. Arctic Ice Chart, January 10, 1972

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

32. Arctic Ice Chart, January 13, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 13, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

33. Arctic Ice Chart, January 17, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 17, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

34. Arctic Ice Chart, January 20, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 20, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

35. Arctic Ice Chart, January 24, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 24, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

36. Arctic Ice Chart, January 27, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 27, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

37. Arctic Ice Chart, January 3, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 3, 1972. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

38. Arctic Ice Chart, January 31, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 31, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

39. Arctic Ice Chart, January 6, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for January 6, 1972. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

40. Arctic Ice Chart, July 13, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 13, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

41. Arctic Ice Chart, July 18, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 18, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

42. Arctic Ice Chart, July 20, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 20, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

43. Arctic Ice Chart, July 25, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 25, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

44. Arctic Ice Chart, July 28, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 28, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

45. Arctic Ice Chart, July 3, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 3, 1972. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

46. Arctic Ice Chart, July 6, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for July 6, 1972. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

47. Arctic Ice Chart, June 12, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 12, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

48. Arctic Ice Chart, June 15, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 15, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

49. Arctic Ice Chart, June 19, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 19, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

50. Arctic Ice Chart, June 22, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 22, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

51. Arctic Ice Chart, June 26, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 26, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

52. Arctic Ice Chart, June 29, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 29, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

53. Arctic Ice Chart, June 5, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 5, 1972. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

54. Arctic Ice Chart, June 8, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 8, 1972. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

55. Arctic Ice Chart, March 10, 1972

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

56. Arctic Ice Chart, March 13, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 13, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

57. Arctic Ice Chart, March 16, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 16, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

58. Arctic Ice Chart, March 2, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 2, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

59. Arctic Ice Chart, March 20, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 20, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

60. Arctic Ice Chart, March 23, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 23, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

61. Arctic Ice Chart, March 27, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 27, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).

62. Arctic Ice Chart, March 6, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for March 6, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).

63. Arctic Ice Chart, May 12, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 12, 1972. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

64. Arctic Ice Chart, May 15, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 15, 1972. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

65. Arctic Ice Chart, May 19, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 19, 1972. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

66. Arctic Ice Chart, May 2, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 2, 1972. This layer is part of the Arctic Climate System (ACSYS) Hist... Arctic Climate System (ACSYS).

67. Arctic Ice Chart, May 23, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 23, 1972. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

68. Arctic Ice Chart, May 30, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 30, 1972. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).

69. Arctic Ice Chart, May 4, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 4, 1972. This layer is part of the Arctic Climate System (ACSYS) Hist... Arctic Climate System (ACSYS).

70. Arctic Ice Chart, May 9, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for May 9, 1972. This layer is part of the Arctic Climate System (ACSYS) Hist... Arctic Climate System (ACSYS).

71. Arctic Ice Chart, November 13, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for November 13, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

72. Arctic Ice Chart, November 16, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for November 16, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

73. Arctic Ice Chart, November 2, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for November 2, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

74. Arctic Ice Chart, November 20, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for November 20, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

75. Arctic Ice Chart, November 23, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for November 23, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

76. Arctic Ice Chart, November 27, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for November 27, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

77. Arctic Ice Chart, November 6, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for November 6, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

78. Arctic Ice Chart, November 9, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for November 9, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

79. Arctic Ice Chart, October 12, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for October 12, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

80. Arctic Ice Chart, October 17, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for October 17, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

81. Arctic Ice Chart, October 2, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for October 2, 1972. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

82. Arctic Ice Chart, October 20, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for October 20, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

83. Arctic Ice Chart, October 24, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for October 24, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

84. Arctic Ice Chart, October 27, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for October 27, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

85. Arctic Ice Chart, October 30, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for October 30, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).

86. Arctic Ice Chart, October 5, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for October 5, 1972. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

87. Arctic Ice Chart, October 9, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for October 9, 1972. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).

88. Arctic Ice Chart, September 11, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for September 11, 1972. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).

89. Arctic Ice Chart, September 14, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for September 14, 1972. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).

90. Arctic Ice Chart, September 18, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for September 18, 1972. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).

91. Arctic Ice Chart, September 21, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for September 21, 1972. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).

92. Arctic Ice Chart, September 26, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for September 26, 1972. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).

93. Arctic Ice Chart, September 4, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for September 4, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

94. Arctic Ice Chart, September 8, 1972

1972. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for September 8, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).