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Aerosol Robotic Network (AERONET)
AEROSOL OPTICAL DEPTH AEROSOL INVERSIONS SOLAR FLUX OCEAN COLOR Maritime Aerosol Network
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AERONET Climatology, Level 2.0 - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

AERONET Algorithm: Version 2

Site Index

Year: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016

Channel (nm): 1020, 870, 670, 500, 440, 380, 340, 500 (not interpolated)
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and months (Month) in the observation periods.
Overall Averages of taua500sigma alpha440-870sigma PWsigma NMonth
JAN 0.149 0.073 1.21 0.27 0.55 0.28 59 10
FEB 0.219 0.154 1.19 0.30 0.59 0.30 92 12
MAR 0.227 0.142 1.30 0.27 0.75 0.31 172 13
APR 0.280 0.177 1.38 0.30 1.05 0.36 227 14
MAY 0.200 0.113 1.44 0.27 1.45 0.47 278 14
JUN 0.185 0.092 1.53 0.28 1.86 0.53 268 13
JUL 0.237 0.129 1.55 0.28 2.30 0.58 300 14
AUG 0.241 0.148 1.57 0.27 2.19 0.54 249 13
SEP 0.214 0.160 1.42 0.28 1.68 0.46 225 12
OCT 0.177 0.113 1.36 0.29 1.20 0.50 150 11
NOV 0.190 0.083 1.21 0.32 0.95 0.36 78 12
DEC 0.144 0.064 1.15 0.28 0.73 0.33 51 11
YEAR 0.205 0.039 1.36 0.15 1.27 0.62 2149 149
Overall DownloadYears Combined Download



Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2002
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2002 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN •••••• •••••• ••••••••• •••
FEB •••••• •••••• ••••••••• •••
MAR •••••• •••••• ••••••••• •••
APR 0.330 0.208 1.40 0.35 1.24 0.29 9 143
MAY 0.220 0.068 1.57 0.35 1.58 0.32 24 727
JUN 0.180 0.075 1.78 0.19 1.86 0.39 18 430
JUL 0.324 0.135 1.49 0.18 2.40 0.65 22 341
AUG 0.493 0.229 1.66 0.22 2.14 0.62 24 432
SEP 0.463 0.329 1.51 0.18 1.68 0.57 16 312
OCT 0.241 0.180 1.47 0.22 1.15 0.54 5 43
NOV 0.167 0.078 1.44 0.14 0.99 0.30 4 39
DEC 0.126 0.057 1.32 0.21 0.35 0.10 6 44
YEAR•••••• •••••• ••••••128 2511
Download_2002



Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2003
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2003 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN 0.263 0.000 1.33 0.00 0.93 0.00 1 17
FEB 0.184 0.214 1.48 0.05 0.35 0.12 11 240
MAR 0.296 0.167 1.07 0.36 0.72 0.21 7 67
APR •••••• •••••• ••••••••• •••
MAY •••••• •••••• ••••••••• •••
JUN •••••• •••••• ••••••••• •••
JUL •••••• •••••• ••••••••• •••
AUG •••••• •••••• ••••••••• •••
SEP •••••• •••••• ••••••••• •••
OCT •••••• •••••• ••••••••• •••
NOV •••••• •••••• ••••••••• •••
DEC •••••• •••••• ••••••••• •••
YEAR•••••• •••••• ••••••19 324
Download_2003



Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2004
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2004 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN •••••• •••••• ••••••••• •••
FEB 0.119 0.075 0.86 0.16 0.33 0.13 5 50
MAR 0.374 0.218 1.15 0.27 0.86 0.33 14 170
APR 0.252 0.125 1.40 0.31 0.86 0.39 17 493
MAY 0.231 0.126 1.30 0.35 1.36 0.42 22 372
JUN 0.166 0.069 1.33 0.37 1.63 0.39 23 362
JUL 0.300 0.171 1.32 0.40 2.17 0.55 24 566
AUG 0.218 0.081 1.48 0.34 2.23 0.41 22 544
SEP 0.136 0.070 1.35 0.30 1.47 0.36 18 581
OCT •••••• •••••• ••••••••• •••
NOV 0.195 0.109 0.85 0.36 1.18 0.74 3 18
DEC 0.195 0.031 1.05 0.01 1.14 0.21 2 17
YEAR•••••• •••••• ••••••150 3173
Download_2004



Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2005
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2005 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN •••••• •••••• ••••••••• •••
FEB •••••• •••••• ••••••••• •••
MAR 0.224 0.144 1.30 0.26 0.69 0.28 15 248
APR 0.354 0.189 1.42 0.28 0.99 0.45 22 728
MAY 0.152 0.065 1.49 0.24 1.40 0.50 21 589
JUN 0.198 0.131 1.46 0.26 1.75 0.46 22 388
JUL 0.237 0.130 1.57 0.28 2.15 0.51 25 555
AUG 0.212 0.120 1.37 0.35 1.92 0.39 24 471
SEP 0.225 0.144 1.55 0.24 1.72 0.49 24 706
OCT 0.189 0.155 1.41 0.37 1.31 0.55 23 550
NOV 0.239 0.094 1.25 0.29 0.92 0.25 12 133
DEC 0.171 0.000 1.58 0.00 0.44 0.00 1 3
YEAR•••••• •••••• ••••••189 4371
Download_2005



Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2006
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2006 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN 0.164 0.091 1.29 0.25 0.50 0.21 10 145
FEB 0.481 0.000 1.14 0.00 0.43 0.00 1 6
MAR •••••• •••••• ••••••••• •••
APR 0.481 0.225 1.48 0.19 1.27 0.32 8 215
MAY 0.327 0.260 1.55 0.24 1.22 0.36 22 483
JUN 0.234 0.132 1.49 0.32 1.87 0.59 24 607
JUL 0.215 0.117 1.64 0.32 2.05 0.50 28 1000
AUG 0.194 0.072 1.69 0.20 2.09 0.33 19 210
SEP 0.229 0.116 1.45 0.26 1.82 0.42 28 845
OCT 0.186 0.117 1.29 0.47 1.42 0.53 17 312
NOV 0.193 0.111 1.26 0.24 1.27 0.32 6 87
DEC 0.153 0.066 1.28 0.20 0.91 0.40 8 96
YEAR•••••• •••••• ••••••171 4006
Download_2006



Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2007
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2007 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN 0.119 0.057 1.21 0.19 0.79 0.32 6 47
FEB 0.133 0.063 1.04 0.33 0.60 0.19 5 122
MAR 0.243 0.107 1.41 0.33 0.88 0.25 16 523
APR 0.198 0.194 1.24 0.30 0.95 0.32 21 754
MAY 0.107 0.034 1.19 0.19 0.82 0.23 6 192
JUN •••••• •••••• ••••••••• •••
JUL 0.222 0.110 1.68 0.15 2.31 0.50 13 193
AUG 0.200 0.068 1.59 0.25 2.11 0.57 17 210
SEP 0.183 0.127 1.38 0.35 1.60 0.34 17 258
OCT 0.160 0.113 1.46 0.22 1.15 0.36 10 139
NOV 0.179 0.076 1.39 0.11 0.98 0.35 6 60
DEC 0.352 0.000 1.10 0.00 0.51 0.00 1 9
YEAR•••••• •••••• ••••••118 2507
Download_2007



Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2008
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2008 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN 0.136 0.061 1.08 0.31 0.73 0.23 12 102
FEB 0.196 0.120 1.13 0.28 0.80 0.35 9 107
MAR 0.227 0.125 1.44 0.29 0.75 0.20 12 196
APR 0.379 0.216 1.50 0.27 1.07 0.28 15 293
MAY 0.141 0.069 1.26 0.33 1.22 0.30 20 533
JUN 0.188 0.089 1.65 0.33 1.57 0.32 27 741
JUL 0.157 0.081 1.73 0.30 1.97 0.44 22 590
AUG 0.172 0.097 1.57 0.26 2.11 0.40 24 507
SEP 0.262 0.121 1.49 0.24 1.95 0.59 13 266
OCT 0.226 0.130 1.44 0.17 1.35 0.37 15 259
NOV 0.150 0.043 1.26 0.26 0.99 0.52 6 67
DEC 0.154 0.064 1.14 0.48 1.04 0.17 5 45
YEAR 0.199 0.069 1.39 0.21 1.30 0.50 180 3706
Download_2008



Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2009
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2009 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN •••••• •••••• ••••••••• •••
FEB •••••• •••••• ••••••••• •••
MAR 0.212 0.079 1.45 0.14 0.65 0.21 5 50
APR 0.286 0.206 1.45 0.25 0.87 0.32 21 525
MAY 0.168 0.077 1.34 0.23 1.13 0.33 22 618
JUN 0.153 0.050 1.65 0.23 1.61 0.45 7 90
JUL 0.267 0.081 1.37 0.29 2.35 0.51 21 355
AUG 0.239 0.045 1.14 0.10 2.29 1.17 2 14
SEP 0.249 0.131 1.37 0.23 1.79 0.34 26 713
OCT 0.137 0.067 1.38 0.22 0.93 0.27 7 84
NOV 0.178 0.074 1.21 0.34 0.85 0.45 8 93
DEC 0.194 0.000 1.36 0.00 0.64 0.00 1 11
YEAR•••••• •••••• ••••••120 2553
Download_2009



Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2010
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2010 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN 0.148 0.074 1.34 0.16 0.38 0.15 8 92
FEB 0.218 0.125 1.38 0.17 0.79 0.33 9 143
MAR 0.198 0.094 1.36 0.22 0.66 0.39 16 301
APR 0.285 0.146 1.44 0.25 1.01 0.25 22 467
MAY 0.215 0.071 1.49 0.23 1.62 0.42 13 176
JUN 0.148 0.077 1.52 0.17 1.74 0.56 21 708
JUL 0.194 0.096 1.67 0.21 2.51 0.64 20 751
AUG 0.238 0.115 1.62 0.23 2.49 0.50 23 479
SEP 0.112 0.049 1.46 0.22 1.33 0.20 13 319
OCT 0.148 0.071 1.24 0.32 0.83 0.20 19 531
NOV 0.172 0.000 0.96 0.00 1.81 0.00 1 10
DEC •••••• •••••• ••••••••• •••
YEAR•••••• •••••• ••••••165 3977
Download_2010



Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2011
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2011 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN •••••• •••••• ••••••••• •••
FEB 0.396 0.247 1.49 0.10 0.53 0.19 8 165
MAR 0.204 0.127 1.32 0.20 0.70 0.28 19 500
APR 0.310 0.168 1.55 0.25 1.06 0.19 18 573
MAY 0.193 0.068 1.52 0.21 1.47 0.49 24 649
JUN 0.186 0.079 1.62 0.18 2.04 0.48 23 553
JUL 0.241 0.075 1.65 0.23 2.45 0.37 15 244
AUG 0.203 0.117 1.61 0.26 2.16 0.58 27 666
SEP 0.177 0.095 1.42 0.31 1.76 0.50 26 589
OCT 0.160 0.097 1.41 0.14 1.22 0.42 13 255
NOV 0.226 0.067 1.29 0.28 0.90 0.25 15 214
DEC 0.136 0.015 1.33 0.16 0.69 0.05 6 53
YEAR•••••• •••••• ••••••194 4461
Download_2011



Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2012
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2012 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN 0.181 0.065 1.26 0.17 0.44 0.21 8 143
FEB 0.237 0.115 1.37 0.12 0.33 0.21 13 234
MAR 0.187 0.111 1.27 0.20 0.70 0.36 16 450
APR 0.167 0.066 1.33 0.24 1.07 0.30 13 381
MAY 0.194 0.090 1.40 0.19 1.56 0.46 24 818
JUN 0.225 0.072 1.40 0.24 2.05 0.67 18 393
JUL 0.459 0.160 1.33 0.13 3.01 0.44 10 294
AUG •••••• •••••• ••••••••• •••
SEP •••••• •••••• ••••••••• •••
OCT •••••• •••••• ••••••••• •••
NOV •••••• •••••• ••••••••• •••
DEC •••••• •••••• ••••••••• •••
YEAR•••••• •••••• ••••••102 2713
Download_2012



Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2013
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2013 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN 0.203 0.000 1.50 0.00 0.32 0.00 1 3
FEB 0.221 0.063 1.08 0.44 0.65 0.19 3 16
MAR 0.122 0.071 1.24 0.23 0.46 0.19 11 382
APR 0.273 0.191 1.41 0.21 1.14 0.49 13 382
MAY 0.198 0.078 1.44 0.31 1.84 0.35 17 393
JUN 0.226 0.108 1.48 0.27 2.33 0.57 22 423
JUL 0.233 0.127 1.51 0.20 2.23 0.52 27 747
AUG 0.208 0.140 1.51 0.26 2.12 0.54 28 721
SEP 0.088 0.044 1.18 0.28 1.29 0.29 14 342
OCT 0.145 0.067 1.18 0.13 1.19 0.56 9 176
NOV 0.166 0.122 0.65 0.32 0.88 0.35 6 44
DEC 0.146 0.064 0.87 0.22 0.76 0.22 12 141
YEAR 0.186 0.053 1.25 0.28 1.27 0.71 163 3770
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Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2014
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2014 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN 0.127 0.090 0.87 0.50 0.34 0.14 3 36
FEB 0.237 0.126 0.91 0.25 0.79 0.26 14 257
MAR 0.244 0.182 1.06 0.21 0.94 0.29 15 486
APR 0.272 0.088 1.30 0.28 1.29 0.42 20 386
MAY 0.185 0.075 1.36 0.22 1.69 0.59 19 462
JUN 0.152 0.060 1.41 0.20 1.74 0.37 18 438
JUL 0.241 0.091 1.66 0.22 2.62 0.58 24 645
AUG 0.256 0.079 1.52 0.19 2.59 0.64 10 255
SEP 0.213 0.117 1.34 0.29 1.71 0.49 18 522
OCT 0.217 0.098 1.34 0.26 1.31 0.68 17 410
NOV 0.192 0.052 1.17 0.22 1.02 0.32 4 69
DEC 0.144 0.046 1.16 0.26 0.47 0.22 3 39
YEAR 0.207 0.047 1.26 0.23 1.38 0.73 165 4005
Download_2014



Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2015
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2015 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN 0.100 0.026 0.98 0.24 0.84 0.53 3 45
FEB 0.218 0.122 0.91 0.07 0.56 0.26 7 153
MAR 0.238 0.139 1.36 0.28 0.86 0.36 16 441
APR 0.198 0.138 1.17 0.35 0.98 0.28 12 310
MAY 0.187 0.066 1.43 0.20 1.32 0.37 19 261
JUN 0.166 0.058 1.57 0.24 1.84 0.47 21 521
JUL 0.201 0.098 1.53 0.25 2.20 0.60 27 615
AUG 0.259 0.112 1.62 0.20 2.35 0.64 28 974
SEP 0.203 0.149 1.50 0.25 1.74 0.55 12 154
OCT 0.136 0.080 1.41 0.20 1.10 0.48 15 290
NOV 0.121 0.047 1.26 0.26 0.71 0.18 7 117
DEC 0.079 0.042 1.18 0.14 0.69 0.45 6 59
YEAR 0.175 0.056 1.33 0.23 1.26 0.62 173 3940
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Level 2.0 Climatology - Quality Assured Data

Belsk (N 51°50', E 20°47', Alt 190 m )

Year: 2016
Top | Site Index
Aerosol optical depth at 500 nm (taua500), Angstrom exponent (alpha440-870), precipitable water (PW), the associated standard deviations (sigma), the number of days (N) and number of observations in the period (Obs).
2016 Averages of taua500sigma alpha440-870sigma PWsigma NObs
JAN 0.142 0.090 1.34 0.20 0.37 0.20 7 94
FEB 0.125 0.068 1.09 0.30 0.75 0.24 7 76
MAR 0.185 0.092 1.46 0.23 0.77 0.18 10 249
APR 0.217 0.122 1.20 0.42 1.12 0.39 16 330
MAY 0.210 0.084 1.58 0.17 1.74 0.42 25 640
JUN 0.161 0.080 1.57 0.28 2.01 0.63 24 631
JUL 0.152 0.100 1.50 0.21 2.38 0.68 22 395
AUG 0.126 0.000 1.68 0.00 1.87 0.00 1 31
SEP •••••• •••••• ••••••••• •••
OCT •••••• •••••• ••••••••• •••
NOV •••••• •••••• ••••••••• •••
DEC •••••• •••••• ••••••••• •••
YEAR•••••• •••••• ••••••112 2446
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