Site

Parameters

Observed/model

Season

DJF

MAM

JJA

SON

Nairobi

AOD (550 nm)

AERONET/MODIS

0.24 ± 0.07

0.18 ± 0.05

0.20 ± 0.04

0.16 ± 0.06

OPAC Derived

0.26 ± 0.06

0.20 ± 0.07

0.23 ± 0.08

0.18 ± 0.07

RMSE

0.02

0.03

0.02

0.02

ÅE (470 - 660 nm)

AERONET/MODIS

1.43 ± 0.33

1.04 ± 0.26

1.53 ± 0.24

1.36 ± 0.14

OPAC Derived

1.40 ± 0.14

1.06 ± 0.21

1.51 ± 0.11

1.30 ± 0.25

RMSE

0.02

0.02

0.03

0.04

Columnar ozone (DU)

OMI

268 ± 15

283 ± 13

264 ± 12

278 ± 20

Precipitable water vapor (cm)

MODIS-Terra

1.4 ± 0.4

4.5 ± 0.3

1.1 ± 0.5

2.5 ± 0.9

Rainfall (mm)

From NCEP re-analysis

10.90

138.87

37.36

114.03

Mbita

AOD (550 nm)

AERONET/MODIS

0.21 ± 0.06

0.15 ± 0.05

0.20 ± 0.07

0.18 ± 0.05

OPAC Derived

0.23 ± 0.05

0.20 ± 0.06

0.21 ± 0.04

0.19 ± 0.03

RMSE

0.03

0.03

0.01

0.03

ÅE (470 - 660 nm)

AERONET/MODIS

1.46 ± 0.31

1.14 ± 0.26

1.57 ± 0.20

1.46 ± 0.17

OPAC Derived

1.43 ± 0.14

1.10 ± 0.21

1.56 ± 0.12

1.43 ± 0.11

RMSE

0.01

0.03

0.01

0.02

Columnar ozone (DU)

OMI

264 ± 17

278 ± 19

260 ± 18

271 ± 21

Precipitable water vapor (cm)

MODIS-Terra

1.8 ± 0.6

4.9 ± 0.5

1.6 ± 0.4

3.0 ± 0.7

Rainfall (mm)

From NCEP re-analysis

12.30

137.31

34.86

114.61

Malindi

AOD (550 nm)

AERONET/MODIS

0.26 ± 0.08

0.20 ± 0.05

0.22 ± 0.06

0.20 ± 0.07

OPAC Derived

0.28 ± 0.07

0.22 ± 0.04

0.25 ± 0.03

0.21 ± 0.06

RMSE

0.02

0.02

0.01

0.02

ÅE (470 - 660 nm)

AERONET/MODIS

1.01 ± 0.11

0.99 ± 0.13

0.78 ± 0.11

0.96 ± 0.12

OPAC Derived

1.00 ± 0.15

0.94 ± 0.10

0.75 ± 0.10

0.94 ± 0.16

RMSE

0.03

0.02

0.01

0.02

Columnar ozone (DU)

OMI

271 ± 10

272 ± 14

261 ± 18

272 ± 21

Precipitable water vapor (cm)

MODIS-Terra

2.1 ± 0.3

5.4 ± 0.1

1.9 ± 0.3

3.4 ± 0.5

Rainfall (mm)

From NCEP re-analysis

6.67

105.31

26.16

98.18

Mau forest complex

AOD (550 nm)

AERONET/MODIS

0.16 ± 0.03

0.10 ± 0.04

0.13 ± 0.06

0.11 ± 0.07

OPAC Derived

0.17 ± 0.01

0.12 ± 0.07

0.16 ± 0.07

0.13 ± 0.08

RMSE

0.02

0.03

0.03

0.02

ÅE (470 - 660 nm)

AERONET/MODIS

1.56 ± 0.21

1.17 ± 0.13

1.57 ± 0.10

1.66 ± 0.17

OPAC Derived

1.54 ± 0.16

1.14 ± 0.11

1.56 ± 0.17

1.64 ± 0.11

RMSE

0.03

0.03

0.02

0.03

Columnar ozone (DU)

OMI

265 ± 10

280 ± 15

261 ± 15

275 ± 21

Precipitable water vapor (cm)

MODIS-Terra

1.4 ± 0.2

3.1 ± 0.6

1.1 ± 0.8

2.2 ± 0.3

Rainfall (mm)

From NCEP re-analysis

11.00

127.89

37.45

111.01