4 year mon LTER sea-ice extent(km2) LTER sea-ice area(km2) (Note: data are from the GSFC Bootstrap SMMR-SSMI time-series, i.e. the intercalibrated, corrected data) 1978 1 -999.00 -999.00 1978 2 -999.00 -999.00 1978 3 -999.00 -999.00 1978 4 -999.00 -999.00 1978 5 -999.00 -999.00 1978 6 -999.00 -999.00 1978 7 -999.00 -999.00 1978 8 -999.00 -999.00 1978 9 -999.00 -999.00 1978 10 163551.56 128076.59 1978 11 153426.97 120917.30 1978 12 136007.00 99610.19 1979 1 97747.35 60383.84 1979 2 80109.07 39051.04 1979 3 48950.82 21504.38 1979 4 54512.21 21980.77 1979 5 131238.00 72255.15 1979 6 162370.52 120487.45 1979 7 198012.80 150114.16 1979 8 199190.33 156266.58 1979 9 198012.80 159509.81 1979 10 189736.92 140061.70 1979 11 145610.09 113568.56 1979 12 123300.62 80493.02 1980 1 89197.88 49811.82 1980 2 55041.97 24696.27 1980 3 53350.32 22070.78 1980 4 102858.30 49945.68 1980 5 143186.02 91498.33 1980 6 199190.33 137029.72 1980 7 199190.33 171642.86 1980 8 199190.33 172818.11 1980 9 199190.33 178010.81 1980 10 199190.33 172258.12 1980 11 192691.83 137192.09 1980 12 166531.36 89637.47 1981 1 84893.03 41087.68 1981 2 52609.93 21023.82 1981 3 22648.58 7501.49 1981 4 54033.86 16337.89 1981 5 125785.48 71500.30 1981 6 178452.83 124839.54 1981 7 199190.33 138320.80 1981 8 199190.33 156583.42 1981 9 199190.33 158212.58 1981 10 199190.33 154325.66 1981 11 156411.52 103445.03 1981 12 110470.03 64528.54 1982 1 67767.76 31244.52 1982 2 43384.53 14904.69 1982 3 28067.47 8672.08 1982 4 29445.04 9982.72 1982 5 68041.72 28403.83 1982 6 111325.41 65281.52 1982 7 187312.80 129593.87 1982 8 199190.33 161302.62 1982 9 199190.33 157340.28 1982 10 193234.39 143802.14 1982 11 186679.92 125340.24 1982 12 123142.71 61876.91 1983 1 45770.40 15923.34 1983 2 26265.93 7979.13 1983 3 22690.66 6727.21 1983 4 22656.16 6802.53 1983 5 22008.35 6442.72 1983 6 96093.40 39072.59 1983 7 126139.17 70894.21 1983 8 175405.36 93141.18 1983 9 165353.48 100814.90 1983 10 163571.09 99922.42 1983 11 69656.09 33907.61 1983 12 46310.47 17894.99 1984 1 30463.10 9644.58 1984 2 24406.53 7453.72 1984 3 11556.58 2829.34 1984 4 17711.14 4265.49 1984 5 38642.29 13387.01 1984 6 133615.08 82664.69 1984 7 183106.73 134011.72 1984 8 199190.33 153491.22 1984 9 108181.72 61883.44 1984 10 137245.55 94697.54 1984 11 97806.27 57204.90 1984 12 66583.71 26460.51 1985 1 32226.12 9817.21 1985 2 15248.87 4373.92 1985 3 4253.33 947.89 1985 4 4918.17 996.83 1985 5 20250.04 5442.20 1985 6 84496.78 40422.65 1985 7 155175.77 98315.98 1985 8 178373.38 120028.98 1985 9 170081.59 102926.88 1985 10 127005.70 83329.97 1985 11 86885.25 56271.71 1985 12 74636.70 43860.73 1986 1 54411.52 24028.77 1986 2 23242.37 7965.91 1986 3 11652.02 3388.83 1986 4 13515.13 4111.85 1986 5 93915.48 31754.55 1986 6 155646.45 87911.06 1986 7 199190.33 137141.06 1986 8 199190.33 167139.16 1986 9 199190.33 167139.58 1986 10 199190.33 168403.83 1986 11 196211.72 153698.58 1986 12 189075.19 123171.99 1987 1 118428.63 65129.43 1987 2 72206.14 31585.40 1987 3 31909.52 11892.31 1987 4 80397.20 39098.48 1987 5 115389.30 58938.70 1987 6 197421.80 122633.97 1987 7 199190.33 177761.92 1987 8 199190.33 175173.86 1987 9 199190.33 160796.17 1987 10 193226.16 145425.92 1987 11 114130.44 80401.95 1987 12 91022.16 64959.71 1988 1 37312.61 19910.92 1988 2 30534.82 12935.09 1988 3 18340.75 6889.39 1988 4 22097.99 8008.18 1988 5 49108.04 16746.71 1988 6 96501.53 41541.41 1988 7 137677.05 86020.76 1988 8 199190.33 138243.23 1988 9 199190.33 147447.64 1988 10 135403.81 88200.72 1988 11 67337.73 32527.71 1988 12 29851.79 9914.14 1989 1 9041.78 3167.12 1989 2 7842.94 2890.51 1989 3 7843.39 2824.24 1989 4 3031.67 961.75 1989 5 7278.69 1721.08 1989 6 71805.14 31056.71 1989 7 88864.82 47821.29 1989 8 101012.02 49494.54 1989 9 127015.28 71604.63 1989 10 55815.70 22167.87 1989 11 19580.54 7095.65 1989 12 10945.09 3728.28 1990 1 7842.94 2770.50 1990 2 7842.94 2909.19 1990 3 7243.72 2474.68 1990 4 3022.24 791.33 1990 5 15828.68 4643.57 1990 6 78205.95 27798.34 1990 7 118264.03 70356.47 1990 8 181967.97 114878.31 1990 9 194419.98 150676.89 1990 10 171299.19 137873.17 1990 11 155807.97 125343.95 1990 12 131196.58 70772.20 1991 1 10861.64 3549.92 1991 2 7243.72 2710.59 1991 3 6030.99 1646.05 1991 4 4223.97 1273.07 1991 5 90532.96 31006.53 1991 6 199190.33 137361.48 1991 7 199190.33 143038.31 1991 8 199190.33 173498.53 1991 9 187950.12 143608.03 1991 10 171266.97 131086.97 1991 11 136634.81 99949.40 1991 12 80718.41 55533.15 1992 1 58124.50 28046.99 1992 2 31205.43 11673.90 1992 3 28287.53 8868.65 1992 4 38153.25 17627.40 1992 5 106990.34 56792.80 1992 6 192653.69 126404.48 1992 7 199190.33 171141.27 1992 8 199190.33 154684.53 1992 9 175483.45 110293.09 1992 10 135440.62 68467.41 1992 11 80209.63 39964.56 1992 12 36070.91 17447.48 1993 1 22665.53 9028.46 1993 2 10962.30 4567.18 1993 3 10380.58 3253.57 1993 4 14770.06 5298.50 1993 5 47940.77 19620.69 1993 6 117974.10 77326.75 1993 7 166515.16 115471.67 1993 8 179607.78 86113.61 1993 9 193276.36 132858.97 1993 10 185494.41 141908.06 1993 11 146834.22 80894.19 1993 12 64372.17 37540.86 1994 1 34934.88 18640.49 1994 2 13429.85 5293.39 1994 3 11634.96 4422.80 1994 4 9192.94 3045.34 1994 5 28835.55 9638.05 1994 6 119067.59 79802.87 1994 7 199190.33 138164.98 1994 8 199190.33 166101.64 1994 9 167743.44 126775.46 1994 10 199190.33 152865.97 1994 11 195039.14 106419.70 1994 12 60520.69 30135.49 1995 1 22541.44 8288.54 1995 2 11563.33 4311.76 1995 3 7321.01 1955.06 1995 4 7353.37 2077.41 1995 5 36909.81 9142.91 1995 6 138378.12 77275.66 1995 7 199190.33 161466.97 1995 8 199190.33 182222.39 1995 9 199190.33 176580.81 1995 10 147098.77 101141.71 1995 11 117273.80 74386.75 1995 12 75168.92 45849.16 1996 1 37877.47 18694.90 1996 2 25015.34 10179.55 1996 3 14020.04 5378.02 1996 4 12835.29 3963.38 1996 5 14711.85 4613.86 1996 6 103965.98 47828.74 1996 7 155801.55 112707.48 1996 8 183751.52 143201.27 1996 9 171835.50 106637.35 1996 10 141432.33 96403.25 1996 11 100365.69 65673.20 1996 12 53912.14 25712.09 1997 1 21319.03 8204.80 1997 2 15225.90 5150.25 1997 3 9724.20 3205.33 1997 4 7353.37 2208.11 1997 5 58261.08 20812.13 1997 6 116764.60 56490.61 1997 7 190883.34 135578.80 1997 8 199190.33 150269.67 1997 9 199190.33 159938.98 1997 10 169459.08 121244.93 1997 11 167696.33 93664.92 1997 12 43394.53 19455.09 1998 1 12798.12 4781.15 1998 2 7864.43 3156.38 1998 3 6031.47 1978.51 1998 4 7243.72 2179.66 1998 5 57743.82 19222.74 1998 6 90062.72 38742.73 1998 7 114773.41 58080.22 1998 8 167076.28 81472.24 1998 9 198601.31 135569.94 1998 10 109109.67 54555.04 1998 11 68476.92 33390.78 1998 12 50775.91 20152.16 1999 1 2444.96 972.48 1999 2 1223.83 520.22 1999 3 1223.83 379.43 1999 4 1223.83 299.81 1999 5 1223.83 275.32 1999 6 80956.80 30573.04 1999 7 120863.45 76775.02 1999 8 181960.58 134244.69 1999 9 192041.86 146416.02 1999 10 184325.86 123163.47 1999 11 132417.23 67245.86 1999 12 57454.99 32318.86 2000 1 32435.54 14228.14 2000 2 12793.43 5128.50 2000 3 8495.68 2981.62 2000 4 7885.68 2432.15 2000 5 18977.98 5718.68 2000 6 63181.62 19407.62 2000 7 114921.39 65921.12 2000 8 174198.30 110672.15 2000 9 187882.05 133567.98 2000 10 176610.23 121576.58 2000 11 95557.22 60240.94 2000 12 43125.23 26722.08 2001 1 9722.33 3368.95 2001 2 5431.29 1870.36 2001 3 6631.17 2031.85 2001 4 4830.65 1158.93 2001 5 4229.56 1244.41 2001 6 67467.10 24104.56 2001 7 148557.98 97617.92 2001 8 193838.44 136996.88 2001 9 168903.42 136379.53 2001 10 117224.66 70920.94 2001 11 69010.07 41461.38 2001 12 43338.13 25418.41 2002 1 36593.62 19191.65 2002 2 24985.15 11437.10 2002 3 23233.23 8394.39 2002 4 12831.81 3797.73 2002 5 99212.05 44658.30 2002 6 161660.97 118358.27 2002 7 193828.77 146606.48 2002 8 188470.84 138059.72 2002 9 184878.58 132140.98 2002 10 -999.00 -999.00 2002 11 -999.00 -999.00 2002 12 -999.00 -999.00 --------------9ABFF4823400C61FD0CA2C6F--