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Aerosol Optical Depth & Cloud Fraction

Global Map Aerosol Optical Depth Image 1 Global Map Aerosol Optical Depth Image 2 Global Map Aerosol Optical Depth Image 3 Global Map Aerosol Optical Depth Image 4 Global Map Aerosol Optical Depth Image 5 Global Map Aerosol Optical Depth Image 6 Global Map Aerosol Optical Depth Image 7 Global Map Aerosol Optical Depth Image 8 Global Map Aerosol Optical Depth Image 9 Global Map Aerosol Optical Depth Image 10 Global Map Aerosol Optical Depth Image 11 Global Map Aerosol Optical Depth Image 12 Global Map Aerosol Optical Depth Image 13 Global Map Aerosol Optical Depth Image 14 Global Map Aerosol Optical Depth Image 15 Global Map Aerosol Optical Depth Image 16 Global Map Aerosol Optical Depth Image 17 Global Map Aerosol Optical Depth Image 18 Global Map Aerosol Optical Depth Image 19 Global Map Aerosol Optical Depth Image 20 Global Map Aerosol Optical Depth Image 21 Global Map Aerosol Optical Depth Image 22 Global Map Aerosol Optical Depth Image 23 Global Map Aerosol Optical Depth Image 24 Global Map Aerosol Optical Depth Image 25 Global Map Aerosol Optical Depth Image 26 Global Map Aerosol Optical Depth Image 27 Global Map Aerosol Optical Depth Image 28 Global Map Aerosol Optical Depth Image 29 Global Map Aerosol Optical Depth Image 30 Global Map Aerosol Optical Depth Image 31 Global Map Aerosol Optical Depth Image 32 Global Map Aerosol Optical Depth Image 33 Global Map Aerosol Optical Depth Image 34 Global Map Aerosol Optical Depth Image 35 Global Map Aerosol Optical Depth Image 36 Global Map Aerosol Optical Depth Image 37 Global Map Aerosol Optical Depth Image 38 Global Map Aerosol Optical Depth Image 39 Global Map Aerosol Optical Depth Image 40 Global Map Aerosol Optical Depth Image 41 Global Map Aerosol Optical Depth Image 42 Global Map Aerosol Optical Depth Image 43 Global Map Aerosol Optical Depth Image 44 Global Map Aerosol Optical Depth Image 45 Global Map Aerosol Optical Depth Image 46 Global Map Aerosol Optical Depth Image 47 Global Map Aerosol Optical Depth Image 48 Global Map Aerosol Optical Depth Image 49 Global Map Aerosol Optical Depth Image 50 Global Map Aerosol Optical Depth Image 51 Global Map Aerosol Optical Depth Image 52 Global Map Aerosol Optical Depth Image 53 Global Map Aerosol Optical Depth Image 54 Global Map Aerosol Optical Depth Image 55 Global Map Aerosol Optical Depth Image 56 Global Map Aerosol Optical Depth Image 57 Global Map Aerosol Optical Depth Image 58 Global Map Aerosol Optical Depth Image 59 Global Map Aerosol Optical Depth Image 60 Global Map Aerosol Optical Depth Image 61 Global Map Aerosol Optical Depth Image 62 Global Map Aerosol Optical Depth Image 63 Global Map Aerosol Optical Depth Image 64 Global Map Aerosol Optical Depth Image 65 Global Map Aerosol Optical Depth Image 66 Global Map Aerosol Optical Depth Image 67 Global Map Aerosol Optical Depth Image 68 Global Map Aerosol Optical Depth Image 69 Global Map Aerosol Optical Depth Image 70 Global Map Aerosol Optical Depth Image 71 Global Map Aerosol Optical Depth Image 72 Global Map Aerosol Optical Depth Image 73 Global Map Aerosol Optical Depth Image 74 Global Map Aerosol Optical Depth Image 75 Global Map Aerosol Optical Depth Image 76 Global Map Aerosol Optical Depth Image 77 Global Map Aerosol Optical Depth Image 78 Global Map Aerosol Optical Depth Image 79 Global Map Aerosol Optical Depth Image 80 Global Map Aerosol Optical Depth Image 81 Global Map Aerosol Optical Depth Image 82 Global Map Aerosol Optical Depth Image 83 Global Map Aerosol Optical Depth Image 84 Global Map Aerosol Optical Depth Image 85 Global Map Aerosol Optical Depth Image 86 Global Map Aerosol Optical Depth Image 87 Global Map Aerosol Optical Depth Image 88 Global Map Aerosol Optical Depth Image 89 Global Map Aerosol Optical Depth Image 90 Global Map Aerosol Optical Depth Image 91 Global Map Aerosol Optical Depth Image 92 Global Map Aerosol Optical Depth Image 93 Global Map Aerosol Optical Depth Image 94 Global Map Aerosol Optical Depth Image 95 Global Map Aerosol Optical Depth Image 96 Global Map Aerosol Optical Depth Image 97 Global Map Aerosol Optical Depth Image 98 Global Map Aerosol Optical Depth Image 99 Global Map Aerosol Optical Depth Image 100 Global Map Aerosol Optical Depth Image 101 Global Map Aerosol Optical Depth Image 102 Global Map Aerosol Optical Depth Image 103 Global Map Aerosol Optical Depth Image 104 Global Map Aerosol Optical Depth Image 105 Global Map Aerosol Optical Depth Image 106 Global Map Aerosol Optical Depth Image 107 Global Map Aerosol Optical Depth Image 108 Global Map Aerosol Optical Depth Image 109 Global Map Aerosol Optical Depth Image 110 Global Map Aerosol Optical Depth Image 111 Global Map Aerosol Optical Depth Image 112 Global Map Aerosol Optical Depth Image 113 Global Map Aerosol Optical Depth Image 114 Global Map Aerosol Optical Depth Image 115 Global Map Aerosol Optical Depth Image 116 Global Map Aerosol Optical Depth Image 117 Global Map Aerosol Optical Depth Image 118 Global Map Aerosol Optical Depth Image 119 Global Map Aerosol Optical Depth Image 120 Global Map Aerosol Optical Depth Image 121 Global Map Aerosol Optical Depth Image 122 Global Map Aerosol Optical Depth Image 123 Global Map Aerosol Optical Depth Image 124 Global Map Aerosol Optical Depth Image 125 Global Map Aerosol Optical Depth Image 126 Global Map Aerosol Optical Depth Image 127 Global Map Aerosol Optical Depth Image 128 Global Map Aerosol Optical Depth Image 129 Global Map Aerosol Optical Depth Image 130 Global Map Aerosol Optical Depth Image 131 Global Map Aerosol Optical Depth Image 132 Global Map Aerosol Optical Depth Image 133 Global Map Aerosol Optical Depth Image 134 Global Map Aerosol Optical Depth Image 135 Global Map Aerosol Optical Depth Image 136 Global Map Aerosol Optical Depth Image 137 Global Map Aerosol Optical Depth Image 138 Global Map Aerosol Optical Depth Image 139 Global Map Aerosol Optical Depth Image 140 Global Map Aerosol Optical Depth Image 141 Global Map Aerosol Optical Depth Image 142 Global Map Aerosol Optical Depth Image 143 Global Map Aerosol Optical Depth Image 144 Global Map Aerosol Optical Depth Image 145 Global Map Aerosol Optical Depth Image 146 Global Map Aerosol Optical Depth Image 147 Global Map Aerosol Optical Depth Image 148 Global Map Aerosol Optical Depth Image 149 Global Map Aerosol Optical Depth Image 150 Global Map Aerosol Optical Depth Image 151 Global Map Aerosol Optical Depth Image 152 Global Map Aerosol Optical Depth Image 153 Global Map Aerosol Optical Depth Image 154 Global Map Aerosol Optical Depth Image 155 Global Map Aerosol Optical Depth Image 156 Global Map Aerosol Optical Depth Image 157 Global Map Aerosol Optical Depth Image 158 Global Map Aerosol Optical Depth Image 159 Global Map Aerosol Optical Depth Image 160 Global Map Aerosol Optical Depth Image 161 Global Map Aerosol Optical Depth Image 162 Global Map Aerosol Optical Depth Image 163 Global Map Aerosol Optical Depth Image 164 Global Map Aerosol Optical Depth Image 165 Global Map Aerosol Optical Depth Image 166 Global Map Aerosol Optical Depth Image 167 Global Map Aerosol Optical Depth Image 168 Global Map Aerosol Optical Depth Image 169 Global Map Aerosol Optical Depth Image 170 Global Map Aerosol Optical Depth Image 171 Global Map Aerosol Optical Depth Image 172 Global Map Aerosol Optical Depth Image 173 Global Map Aerosol Optical Depth Image 174 Global Map Aerosol Optical Depth Image 175 Global Map Aerosol Optical Depth Image 176 Global Map Aerosol Optical Depth Image 177 Global Map Aerosol Optical Depth Image 178 Global Map Aerosol Optical Depth Image 179 Global Map Aerosol Optical Depth Image 180 Global Map Aerosol Optical Depth Image 181 Global Map Aerosol Optical Depth Image 182 Global Map Aerosol Optical Depth Image 183 Global Map Aerosol Optical Depth Image 184 Global Map Aerosol Optical Depth Image 185 Global Map Aerosol Optical Depth Image 186 Global Map Aerosol Optical Depth Image 187 Global Map Aerosol Optical Depth Image 188 Global Map Aerosol Optical Depth Image 189 Global Map Aerosol Optical Depth Image 190 Global Map Aerosol Optical Depth Image 191 Global Map Aerosol Optical Depth Image 192 Global Map Aerosol Optical Depth Image 193 Global Map Aerosol Optical Depth Image 194 Global Map Aerosol Optical Depth Image 195 Global Map Aerosol Optical Depth Image 196 Global Map Aerosol Optical Depth Image 197 Global Map Aerosol Optical Depth Image 198 Global Map Aerosol Optical Depth Image 199 Global Map Aerosol Optical Depth Image 200 Global Map Aerosol Optical Depth Image 201 Global Map Aerosol Optical Depth Image 202 Global Map Aerosol Optical Depth Image 203 Global Map Aerosol Optical Depth Image 204 Global Map Aerosol Optical Depth Image 205 Global Map Aerosol Optical Depth Image 206 Global Map Aerosol Optical Depth Image 207 Global Map Aerosol Optical Depth Image 208 Global Map Aerosol Optical Depth Image 209 Global Map Aerosol Optical Depth Image 210 Global Map Aerosol Optical Depth Image 211 Global Map Aerosol Optical Depth Image 212 Global Map Aerosol Optical Depth Image 213 Global Map Aerosol Optical Depth Image 214 Global Map Aerosol Optical Depth Image 215 Global Map Aerosol Optical Depth Image 216 Global Map Aerosol Optical Depth Image 217 Global Map Aerosol Optical Depth Image 218
Aerosol Optical Depth
Aerosol Optical Depth Scale
Cloud Fraction
Cloud Fraction Scale
Global Map Cloud Fraction Image 1 Global Map Cloud Fraction Image 2 Global Map Cloud Fraction Image 3 Global Map Cloud Fraction Image 4 Global Map Cloud Fraction Image 5 Global Map Cloud Fraction Image 6 Global Map Cloud Fraction Image 7 Global Map Cloud Fraction Image 8 Global Map Cloud Fraction Image 9 Global Map Cloud Fraction Image 10 Global Map Cloud Fraction Image 11 Global Map Cloud Fraction Image 12 Global Map Cloud Fraction Image 13 Global Map Cloud Fraction Image 14 Global Map Cloud Fraction Image 15 Global Map Cloud Fraction Image 16 Global Map Cloud Fraction Image 17 Global Map Cloud Fraction Image 18 Global Map Cloud Fraction Image 19 Global Map Cloud Fraction Image 20 Global Map Cloud Fraction Image 21 Global Map Cloud Fraction Image 22 Global Map Cloud Fraction Image 23 Global Map Cloud Fraction Image 24 Global Map Cloud Fraction Image 25 Global Map Cloud Fraction Image 26 Global Map Cloud Fraction Image 27 Global Map Cloud Fraction Image 28 Global Map Cloud Fraction Image 29 Global Map Cloud Fraction Image 30 Global Map Cloud Fraction Image 31 Global Map Cloud Fraction Image 32 Global Map Cloud Fraction Image 33 Global Map Cloud Fraction Image 34 Global Map Cloud Fraction Image 35 Global Map Cloud Fraction Image 36 Global Map Cloud Fraction Image 37 Global Map Cloud Fraction Image 38 Global Map Cloud Fraction Image 39 Global Map Cloud Fraction Image 40 Global Map Cloud Fraction Image 41 Global Map Cloud Fraction Image 42 Global Map Cloud Fraction Image 43 Global Map Cloud Fraction Image 44 Global Map Cloud Fraction Image 45 Global Map Cloud Fraction Image 46 Global Map Cloud Fraction Image 47 Global Map Cloud Fraction Image 48 Global Map Cloud Fraction Image 49 Global Map Cloud Fraction Image 50 Global Map Cloud Fraction Image 51 Global Map Cloud Fraction Image 52 Global Map Cloud Fraction Image 53 Global Map Cloud Fraction Image 54 Global Map Cloud Fraction Image 55 Global Map Cloud Fraction Image 56 Global Map Cloud Fraction Image 57 Global Map Cloud Fraction Image 58 Global Map Cloud Fraction Image 59 Global Map Cloud Fraction Image 60 Global Map Cloud Fraction Image 61 Global Map Cloud Fraction Image 62 Global Map Cloud Fraction Image 63 Global Map Cloud Fraction Image 64 Global Map Cloud Fraction Image 65 Global Map Cloud Fraction Image 66 Global Map Cloud Fraction Image 67 Global Map Cloud Fraction Image 68 Global Map Cloud Fraction Image 69 Global Map Cloud Fraction Image 70 Global Map Cloud Fraction Image 71 Global Map Cloud Fraction Image 72 Global Map Cloud Fraction Image 73 Global Map Cloud Fraction Image 74 Global Map Cloud Fraction Image 75 Global Map Cloud Fraction Image 76 Global Map Cloud Fraction Image 77 Global Map Cloud Fraction Image 78 Global Map Cloud Fraction Image 79 Global Map Cloud Fraction Image 80 Global Map Cloud Fraction Image 81 Global Map Cloud Fraction Image 82 Global Map Cloud Fraction Image 83 Global Map Cloud Fraction Image 84 Global Map Cloud Fraction Image 85 Global Map Cloud Fraction Image 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Global Map Cloud Fraction Image 115 Global Map Cloud Fraction Image 116 Global Map Cloud Fraction Image 117 Global Map Cloud Fraction Image 118 Global Map Cloud Fraction Image 119 Global Map Cloud Fraction Image 120 Global Map Cloud Fraction Image 121 Global Map Cloud Fraction Image 122 Global Map Cloud Fraction Image 123 Global Map Cloud Fraction Image 124 Global Map Cloud Fraction Image 125 Global Map Cloud Fraction Image 126 Global Map Cloud Fraction Image 127 Global Map Cloud Fraction Image 128 Global Map Cloud Fraction Image 129 Global Map Cloud Fraction Image 130 Global Map Cloud Fraction Image 131 Global Map Cloud Fraction Image 132 Global Map Cloud Fraction Image 133 Global Map Cloud Fraction Image 134 Global Map Cloud Fraction Image 135 Global Map Cloud Fraction Image 136 Global Map Cloud Fraction Image 137 Global Map Cloud Fraction Image 138 Global Map Cloud Fraction Image 139 Global Map Cloud Fraction Image 140 Global Map Cloud Fraction Image 141 Global Map Cloud Fraction Image 142 Global Map Cloud Fraction Image 143 Global Map Cloud Fraction Image 144 Global Map Cloud Fraction Image 145 Global Map Cloud Fraction Image 146 Global Map Cloud Fraction Image 147 Global Map Cloud Fraction Image 148 Global Map Cloud Fraction Image 149 Global Map Cloud Fraction Image 150 Global Map Cloud Fraction Image 151 Global Map Cloud Fraction Image 152 Global Map Cloud Fraction Image 153 Global Map Cloud Fraction Image 154 Global Map Cloud Fraction Image 155 Global Map Cloud Fraction Image 156 Global Map Cloud Fraction Image 157 Global Map Cloud Fraction Image 158 Global Map Cloud Fraction Image 159 Global Map Cloud Fraction Image 160 Global Map Cloud Fraction Image 161 Global Map Cloud Fraction Image 162 Global Map Cloud Fraction Image 163 Global Map Cloud Fraction Image 164 Global Map Cloud Fraction Image 165 Global Map Cloud Fraction Image 166 Global Map Cloud Fraction Image 167 Global Map Cloud Fraction Image 168 Global Map Cloud Fraction Image 169 Global Map Cloud Fraction Image 170 Global Map Cloud Fraction Image 171 Global Map Cloud Fraction Image 172 Global Map Cloud Fraction Image 173 Global Map Cloud Fraction Image 174 Global Map Cloud Fraction Image 175 Global Map Cloud Fraction Image 176 Global Map Cloud Fraction Image 177 Global Map Cloud Fraction Image 178 Global Map Cloud Fraction Image 179 Global Map Cloud Fraction Image 180 Global Map Cloud Fraction Image 181 Global Map Cloud Fraction Image 182 Global Map Cloud Fraction Image 183 Global Map Cloud Fraction Image 184 Global Map Cloud Fraction Image 185 Global Map Cloud Fraction Image 186 Global Map Cloud Fraction Image 187 Global Map Cloud Fraction Image 188 Global Map Cloud Fraction Image 189 Global Map Cloud Fraction Image 190 Global Map Cloud Fraction Image 191 Global Map Cloud Fraction Image 192 Global Map Cloud Fraction Image 193 Global Map Cloud Fraction Image 194 Global Map Cloud Fraction Image 195 Global Map Cloud Fraction Image 196 Global Map Cloud Fraction Image 197 Global Map Cloud Fraction Image 198 Global Map Cloud Fraction Image 199 Global Map Cloud Fraction Image 200 Global Map Cloud Fraction Image 201 Global Map Cloud Fraction Image 202 Global Map Cloud Fraction Image 203 Global Map Cloud Fraction Image 204 Global Map Cloud Fraction Image 205 Global Map Cloud Fraction Image 206 Global Map Cloud Fraction Image 207 Global Map Cloud Fraction Image 208 Global Map Cloud Fraction Image 209 Global Map Cloud Fraction Image 210 Global Map Cloud Fraction Image 211 Global Map Cloud Fraction Image 212 Global Map Cloud Fraction Image 213 Global Map Cloud Fraction Image 214 Global Map Cloud Fraction Image 215 Global Map Cloud Fraction Image 216 Global Map Cloud Fraction Image 217 Global Map Cloud Fraction Image 218

The aerosol maps show average monthly aerosol amounts around the world based on observations from the MODIS sensor on NASA's Terra satellite. Satellite measurements of aerosols, called aerosol optical thickness, are based on the fact that the particles change the way the atmosphere reflects and absorbs visible and infrared light. An optical thickness of less than 0.1 (palest yellow) indicates a crystal clear sky with maximum visibility, whereas a value of 1 (reddish brown) indicates very hazy conditions.

The cloud maps show what fraction of an area was cloudy on average for the month. The measurements were collected by the MODIS sensors on NASA's Terra and Aqua satellites. Colors range from blue (no clouds) to white (totally cloudy).

View, download, or analyze more of these data from NASA Earth Observations (NEO):
Aerosol Optical Depth
Cloud Fraction