1920-1929 MONTHLY VOLCANIC FORCING IN 45-DEGREE-LAT BANDS FROM N TO S 1 1 1 30 70 100 140 170 160 140 130 110 1 1 1 30 70 100 140 170 160 140 130 110 1 1 1 30 70 100 140 170 160 140 130 110 1 1 1 30 70 100 140 170 160 140 130 110 100 80 70 60 40 30 10 1 1 1 1 1 100 80 70 60 40 30 10 1 1 1 1 1 100 80 70 60 40 30 10 1 1 1 1 1 100 80 70 60 40 30 10 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 51 45 55 56 56 64 80 75 68 69 66 63 51 45 55 56 56 64 80 75 68 69 66 63 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 58 52 61 60 68 62 56 41 20 1 1 1 58 52 61 60 68 62 56 41 20 1 1 1 1 1 1 1 1 29 36 46 39 36 36 1 1 1 1 1 1 29 36 46 39 36 36 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 31 31 32 42 41 40 47 1 1 1 1 1 31 31 32 42 41 40 47 21 36 45 56 69 84 97 111 97 91 94 119 21 36 45 56 69 84 97 111 97 91 94 119 49 62 76 75 82 81 90 101 103 99 94 88 49 62 76 75 82 81 90 101 103 99 94 88 121 136 130 122 113 113 115 113 104 94 90 80 121 136 130 122 113 113 115 113 104 94 90 80 ----- ----- ----- ----- ----- NOTE: data in (12 months) by (4 lat-zones) by (10 years) to get actual values of optical depth use a factor of 1.e-4