Climatology Data: Level 2.0 Quality Assured Data AERONET Algorithm: Version 2 Site: GSFC, longitude=-76.839833, latitude=38.992500, elevation=87 m PI: Brent_Holben PI email(s): Brent.N.Holben@nasa.gov Month,1020_avg,1020_std,870_avg,870_std,670_avg,670_std,500_avg,500_std,440_avg,440_std,380_avg,380_std,340_avg,340_std,PW_avg_Lev1.5_(cm),PW_std_Lev1.5_(cm),Alpha_440-870_avg,Alpha_440-870_std,Alpha_380-500_avg,Alpha_380-500_std,Alpha_440-675_avg,Alpha_440-675_std,Alpha_500-870_avg,Alpha_500-870_std,Alpha_340-440_avg,Alpha_340-440_std,Alpha_polar_440-675_avg,Alpha_polar_440-675_std,500-NotInt_avg,500-NotInt_std,412_avg,412_std,532_avg,532_std,555_avg,555_std,1640_avg,1640_std,1020_days,870_days,670_days,500_days,440_days,380_days,340_days,PW_days_Lev1.5,Alpha_440-870_days,Alpha_380-500_days,Alpha_440-675_days,Alpha_500-870_days,Alpha_340-440_days,Alpha_polar_440-675_days,500-NotInt_days,412_days,532_days,555_days,1640_days,1020_Obs,870_Obs,670_Obs,500_Obs,440_Obs,380_Obs,340_Obs,PW_Obs_Lev1.5,Alpha_440-870_Obs,Alpha_380-500_Obs,Alpha_440-675_Obs,Alpha_500-870_Obs,Alpha_340-440_Obs,Alpha_polar_440-675_Obs,500-NotInt_Obs,412_Obs,532_Obs,555_Obs,1640_Obs, 2008-JAN,0.032992,0.014015,0.039064,0.018585,0.051398,0.029682,0.088556,0.050971,0.108046,0.061611,0.132653,0.074834,0.153843,0.084245,0.658627,0.555418,1.480702,0.298101,1.470536,0.244098,1.779831,0.251524,1.411121,0.348897,1.390903,0.230849,-100.000000,-100.000000,0.088556,0.050971,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,22,22,22,22,22,22,22,22,22,22,22,22,22,-100,22,-100,-100,-100,-100,474,474,474,474,474,474,474,474,474,474,474,474,474,-100,474,-100,-100,-100,-100 2008-FEB,0.035788,0.017382,0.043146,0.023179,0.057724,0.036367,0.100590,0.060651,0.123134,0.073540,0.151141,0.090332,0.177165,0.101555,0.663920,0.342360,1.549268,0.250712,1.474519,0.214289,1.835558,0.232528,1.488055,0.281681,1.436176,0.195826,-100.000000,-100.000000,0.100590,0.060651,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,17,17,17,17,17,17,17,17,17,17,17,17,17,-100,17,-100,-100,-100,-100,420,420,420,420,420,420,420,420,420,420,420,420,420,-100,420,-100,-100,-100,-100 2008-MAR,0.051692,0.024776,0.063922,0.031285,0.087490,0.048174,0.146982,0.081949,0.177154,0.100074,0.218444,0.124788,0.252917,0.142776,0.735559,0.300381,1.488157,0.242135,1.430754,0.120990,1.685409,0.199735,1.454226,0.279962,1.386158,0.137299,-100.000000,-100.000000,0.146982,0.081949,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,23,23,23,23,23,23,23,23,23,23,23,23,23,-100,23,-100,-100,-100,-100,636,636,636,636,636,636,636,636,636,636,636,636,636,-100,636,-100,-100,-100,-100 2008-APR,0.081752,0.039783,0.099949,0.047313,0.136200,0.068117,0.215946,0.107624,0.254501,0.127413,0.308582,0.153386,0.347605,0.172934,1.351035,0.691001,1.388508,0.272706,1.306852,0.222168,1.509201,0.259663,1.376510,0.297936,1.189117,0.209663,-100.000000,-100.000000,0.215946,0.107624,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,0.061222,0.035745,16,16,16,16,16,16,16,16,16,16,16,16,16,-100,16,-100,-100,-100,15,382,382,382,382,382,382,382,382,382,382,382,382,382,-100,382,-100,-100,-100,376 2008-MAY,0.074926,0.042930,0.091410,0.052954,0.124578,0.075641,0.195651,0.117441,0.233657,0.136473,0.287736,0.163955,0.328055,0.185919,1.540597,0.571350,1.401833,0.264709,1.452313,0.241273,1.514704,0.263800,1.370649,0.279646,1.317646,0.225452,-100.000000,-100.000000,0.195651,0.117441,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,0.085027,0.028233,22,22,22,22,22,22,22,22,22,22,22,22,22,-100,22,-100,-100,-100,7,618,635,635,635,635,635,635,635,635,635,635,635,635,-100,635,-100,-100,-100,157 2008-JUN,0.085236,0.053972,0.115520,0.070796,0.179265,0.110129,0.302646,0.175995,0.365841,0.206336,0.456103,0.241372,0.527127,0.261868,2.839682,0.805325,1.746627,0.211894,1.560327,0.229530,1.731374,0.202445,1.779603,0.224408,1.527628,0.279953,-100.000000,-100.000000,0.302646,0.175995,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,28,28,28,28,28,28,28,28,28,28,28,28,28,-100,28,-100,-100,-100,-100,709,709,709,709,709,709,708,709,709,709,709,709,709,-100,709,-100,-100,-100,-100 2008-JUL,0.086178,0.048390,0.116771,0.066036,0.195985,0.109786,0.349494,0.181989,0.422535,0.215803,0.531648,0.258034,0.611890,0.288057,2.890349,0.622665,1.946353,0.179237,1.547896,0.262686,1.878154,0.210775,2.027849,0.171524,1.489062,0.300697,-100.000000,-100.000000,0.349494,0.181989,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,24,24,24,24,24,24,24,24,24,24,24,24,24,-100,24,-100,-100,-100,-100,645,645,645,645,645,645,642,645,645,645,645,645,645,-100,645,-100,-100,-100,-100 2008-AUG,0.065466,0.045291,0.088639,0.061667,0.146142,0.100002,0.260753,0.162786,0.313581,0.191573,0.396729,0.227280,0.457366,0.245046,2.571552,0.553953,1.903700,0.204831,1.564408,0.191730,1.866721,0.197410,1.983825,0.213851,1.592845,0.263291,-100.000000,-100.000000,0.260753,0.162786,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,0.016003,0.000000,26,26,26,26,26,26,26,26,26,26,26,26,26,-100,26,-100,-100,-100,1,723,723,723,723,723,723,722,723,723,723,723,723,723,-100,723,-100,-100,-100,54 2008-SEP,0.047483,0.024404,0.067591,0.033454,0.105185,0.056533,0.183362,0.096868,0.222042,0.117213,0.276262,0.142249,0.319734,0.161862,2.059309,0.676136,1.742276,0.265530,1.499045,0.232687,1.768993,0.230328,1.774381,0.288006,1.421787,0.246091,-100.000000,-100.000000,0.183362,0.096868,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,0.027132,0.013742,20,20,20,20,20,20,20,20,20,20,20,20,20,-100,20,-100,-100,-100,20,556,556,556,556,556,556,556,556,556,556,556,556,556,-100,556,-100,-100,-100,551 2008-OCT,0.030207,0.011257,0.039025,0.015347,0.055132,0.024660,0.093817,0.042248,0.113543,0.050687,0.141031,0.062617,0.165382,0.072596,1.266369,0.518823,1.594826,0.202478,1.479584,0.134905,1.735968,0.189664,1.576348,0.226058,1.411356,0.174481,-100.000000,-100.000000,0.093817,0.042248,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,0.021024,0.009911,24,24,24,24,24,24,24,24,24,24,24,24,24,-100,24,-100,-100,-100,23,756,756,756,756,756,756,756,756,756,756,756,756,756,-100,756,-100,-100,-100,728 2008-NOV,0.044171,0.042928,0.053465,0.050750,0.076172,0.068864,0.129545,0.102509,0.156733,0.119198,0.192981,0.139994,0.222198,0.156081,0.904329,0.557869,1.681577,0.201955,1.507813,0.150227,1.817949,0.225483,1.669442,0.214951,1.381953,0.164072,-100.000000,-100.000000,0.129545,0.102509,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,0.024583,0.036272,16,16,16,16,16,16,16,16,16,16,16,16,16,-100,16,-100,-100,-100,13,377,377,377,377,377,377,377,377,377,377,377,377,377,-100,377,-100,-100,-100,293 2008-DEC,0.033088,0.019606,0.036963,0.021509,0.047118,0.026122,0.080493,0.036657,0.097050,0.042428,0.118823,0.049698,0.134682,0.055775,0.689587,0.471334,1.521108,0.295944,1.456019,0.212145,1.817184,0.308477,1.465141,0.312232,1.273230,0.196158,-100.000000,-100.000000,0.080493,0.036657,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,0.019465,0.018747,16,16,16,16,16,16,16,16,16,16,16,16,16,-100,16,-100,-100,-100,14,265,265,265,265,265,265,265,265,265,265,265,265,265,-100,265,-100,-100,-100,225 2008-YEAR,0.055748,0.021815,0.071289,0.030132,0.105199,0.051280,0.178986,0.089168,0.215651,0.107198,0.267678,0.135513,0.308164,0.155634,1.514243,0.866957,1.620411,0.184676,1.479172,0.069532,1.745087,0.122669,1.614762,0.230809,1.401489,0.109221,-100.000000,-100.000000,0.178986,0.089168,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,-100.000000,254,254,254,254,254,254,254,254,254,254,254,254,254,-100,254,-100,-100,-100,-100,6561,6578,6578,6578,6578,6578,6573,6578,6578,6578,6578,6578,6578,-100,6578,-100,-100,-100,-100