protocol of the intercomparison at inta, el arenosillo, spain on … · 2010. 2. 15. · 2/11/2009...

2/11/2009

Protocol of the intercomparison at INTA, El Arenosillo, Spain on September 07 to 13, 2009 with the travelling reference

spectroradiometer QASUME† from PMOD/WRC

Report prepared by Gregor Hülsen Operator: Gregor Hülsen, Julian Gröbner

The purpose of the visit was the comparison of spectral global solar irradiance measurements between the 17 spectrophotometers participating in the 4th Regional Brewer Calibration Center – Europe (RBCC-E) Campaign (see Figure 1 and Table 1) and the travel reference spectroradiometer QASUME. The measurement site is located at El Arenosillo; Latitude 37.10 N, Longitude 6.73 W and altitude 50 m.a.s.l. The horizon of the measurement site is free down to at least 85° solar zenith angle (SZA). Measurements between 5:00 UT and 18:00 UT have been analysed. QASUME arrived at INTA in the morning of September 07, 2007. The spectroradiometer was installed in line to the Brewer spectrophotometers with the entrance optic of QASUME between 2 and 20 m away from the other instruments. The measurement campaign lasted seven days, from noon of September 07 to the evening of September 13; the core comparison days were September 12 and 13. QASUME was calibrated several times during the intercomparison period using a portable calibration system. Three lamps (T68522, T68523, and T61251) were used to obtain an absolute spectral irradiance calibration traceable to the primary reference held at PMOD/WRC, which is traceable to PTB. The daily mean responsivity of the instrument based on these calibrations varied by less than 1 % during the intercomparison period. The internal temperature of QASUME was 26.0±0.1 °C. The diffuser head was heated to a temperature of 29.6±2.2 °C. The wavelength shifts relative to an extraterrestrial spectrum as retrieved from the SHICRivm analysis were between ±50 pm in the spectral range 290 to 400 nm.

† The QASUME spectroradiometer B5503 is made available by the Physical and Chemical Exposure Unit of the Joint Research Centre of the European Commission, Ispra, Italy through a collaboration agreement with PMOD/WRC.

1

2/11/2009

Table 1: Participating Brewer spectrophotometers; 8 single and 9 double monochromators.

Instrument ID Institution Operator Country#017-MKII IOS Ken Lamb Canada#051-MKIV DMN Zaydi Mustapha Morocco#070-MKIV AEMET MADRID María Lopez Spain#075-MKIV UKMO Andrew Smedley U.K.#117-MKIV INM MURCIA Jose Antonio Parodi Spain#126-MKII UKMO Andrew Smedley U.K.#145 MKIII MSC Tom McElroy Canada#150-MKIII INTA HUELVA Jose Manuel Vilaplana Spain#151-MKIV AEMET CORUÑA Francisco García Spain#158-MKIII Kipp & Zonen Kristian Boot The Netherlands#163-MKIII (ISQ) PMOD/WRC Julian Gröbner Switzerland#165-MKIII DMN Zaidouni Taoufik Morocco#166-MKIV AEMET MADRID J.M. Santasnasio Spain#172-MKIII UKMO Andrew Smedley U.K.#185-MKIII (IZ3) AEMED IZAÑA Alberto Redondas Spain#186-MKIII AEMED MADRID Jose Montero Spain#197-MKIII CMA Zheng Xiangdong China

Figure 1: Roof setup at INTA

2

2/11/2009

Protocol: The measurement protocol was to measure one solar irradiance spectrum every 30 minutes from 290 to 400 nm, every 0.5 nm, and 3 seconds between each wavelength increment.

DOY Date DAY Weather Comment250 7-Sep Monday Mix of sun & clouds Installed at 7:00 UT

hazy

251 8-Sep Tuesday Mix of sun & clouds Calibrated: 11:40 using T68523hazy

252 9-Sep Wednesday Mix of sun & cloudshazy

253 10-Sep Thursday Mix of sun & clouds Calibrated: 7:15 using T68523hazy

254 11-Sep Friday Mix of sun & clouds Calibrated: 6:50 using T68523hazy

255 12-Sep Saturday Mostly clear sky UV DaysCalibrated: 7:15 using T68523

256 13-Sep Sunday Mostly clear sky UV DaysClouds at the horizon Calibrated: 16:15 using T68523

Calibrated: 16:35 using T68523Calibrated: 17:12 using T61251

End of Campaign: 18:15 UT

3

2/11/2009

Results: In total 30 to 113 synchronised simultaneous spectra from QASUME and

the Brewer spectrophotometers are available from the measurement period. Measurements between 6:30 and 18:30 UT have been analysed (SZA smaller than 90°).

Remarks:

1. The first day of the intercomparison was dedicated to the setup and training phase. The official “UV-days” where 12 and 13 September (255-256). However, synchronized UV scans are also available from the start of the campaign.

2. Because of the different calibrations and measurements performed during the campaign, traffic on the roof could not be completely omitted. Therefore several scans are disturbed.

3. The time synchronisation between QASUME and various Brewers was much better than in the year 2007. However, in the beginning of the campaign the time lag was sometimes several minutes. UV measurements with differences of up to one minute where accepted as “synchronized” scans.

Brewer Temperature Dependence: The standard Brewer global UV measurement procedure does not take into account the dependence of the Brewer spectral responsibility to ambient temperature. However several studies have shown, that Brewer spectrophotometers have a temperature dependence which can be as large as 0.9%/K and which depends on wavelength (Cappellani, F., and C. Kochler (2000), Temperature effects correction in a Brewer MKIV spectrophotometer for solar UV measurements, J. Geophys. Res., 105(D4), 4829–4831; Weatherhead, E., et al. (2001), Temperature dependence of the Brewer ultraviolet data, J. Geophys. Res., 106(D24), 34,121–34,129). At El Arenosillo, due to the diurnal temperature variations, the temperature dependence of the Brewer spectrophotometers has a significant influence on the global UV measurements as can be seen in the respective ratios relative to the QASUME spectroradiometer which is temperature stabilised. The figures on page 89 to 96 show these ratios plotted as a function of the internal temperature of the Brewers. From this data, the temperature dependencies of the instruments can be derived using a linear fit (see table 2). Using these temperature correction factors the diurnal variations can be partly removed. This can be seen in the stable performance of Brewer #163, which can partly be explained by the applied temperature correction of -0.22%/K.

4

2/11/2009

Recommendations:

The variabilities observed between individual Brewer spectrophotometers relative to the QASUME spectroradiometer are due to ambient temperature variations on the one hand (see above paragraph), and to angular response errors which were not accounted for (See for example Gröbner, J., Improved entrance optic for global irradiance measurements with a Brewer spectrophotometer, Applied Optics, 42, 3516-3521, 2003). While a reliable correction of angular response errors requires the modification of the Brewer entrance optic, the temperature dependence can be corrected by applying a suitable spectral temperature correction to global UV measurements. The temperature correction factors derived from the diurnal variations of the ratios Brewer to QASUME (table 2) can only serve as an approximation because these variations to not only depend on the temperature. This function should therefore be determined individually for every Brewer using a measurement procedure as described in the refereed literature (see references).

Table 2: Mean values of the ratio Brewer/QASUME (305 – 320 nm), the diurnal variability, the wavelength shifts and the Brewer temperature dependencies

Instrument Brewer to Diurnal Wavelength Temperatur ID QASUME [%] variability [%] shift [pm] Dependance [%/K]#017 -10 ±2 -5 .. +20 -0.28#051 -8 ±2 -20 .. +80 -0.38#070 -9 ±2 -10 .. +100 -0.28#075 -4 ±2 -120.. -50 -0.23#117 -6 ±3 -20 .. +80 -0.45#126 -8 ±4 -50 .. +20 -0.46#145 -4 ±2 -10 .. +50 -0.41#150 -1 ±4 -40 .. -10 -0.53#151 -6 ±3 -60 .. +5 -0.53#158 -1 ±2 -50 .. +10 -0.31#163 (ISQ) 2 ±1 -30 .. -10 -0.15#165 -9 ±3 -40 .. -30 -0.43#166 -10 ±3 -50 .. +60 -0.48#172 -6 ±2 -5 .. +60 -0.19#185 (IZ3) -4 ±3 -10 .. +50 -0.10#186 -10 ±2 -80 .. +40 -0.21#197 4 ±4 -80 .. +30 -0.46

5

251

252

253

254

255

256

257

012345678U

V In

dex

INT

A, S

epte

mbe

r 20

09

Day

of Y

ear

UV Index

jrc 017

051

070

075

117

126

145

150

151

158

165

166

172

186

197

isq

iz3

6

251 252 253 254 255 256 2570

1

2

3

4

5

6

7

8UV Index INTA, September 2009

Day of Year

UV

Inde

x

017QASUME

0 12 0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15

1.2Global irradiance ratios 017/QASUME at INTA:08−Sep−2009(251) to 13−Sep−2009(256)

TIME [UT] ON DAYS: [251 252 253 254 255 256]

RA

TIO

017

/QA

SU

ME

251 252 253 254 255 256

305 nm310 nm315 nm320 nm

7

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15

1.2Global irradiance ratios 017/QASUME at INTA:08−Sep−2009(251)

wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(91) 8(68) 10(46) 12(32) 14(38) 16(58) 18(82) 20(105)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15

1.2Daily variation. Wavelength bands are ± 2.5 nm

TIME [UT](SZA)

56° 51°51°305 nm310 nm315 nm320 nm

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(46) 12(32) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 32° 64°305 nm310 nm315 nm320 nm

8

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

8

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

57° 33° 53°305 nm310 nm315 nm320 nm

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

42°42° 65°305 nm310 nm315 nm320 nm

9

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 33° 83°305 nm310 nm315 nm320 nm

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 34° 83°305 nm310 nm315 nm320 nm

10

Wavelength [nm]

RA

TIO

017

/QA

SU

ME

Mean ratio 017/QASUME at INTA:08−Sep−2009(251) to 13−Sep−2009(256)

NBSpectra

=70

295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15

1.2Mean ratio SZA<90Mean ratio SZA<50

5/95th percentileRange of values

300 305 310 315 320 325−0.03

−0.02

−0.01

0

0.01

0.02

0.03

0.04

0.05

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]

INTA, 017, September 2009

MEAN

5/95th percentile

11

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

051QASUME

0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [252 253 254 255 256]

RA

TIO

051

/QA

SU

ME

252 253 254 255 256

305 nm310 nm315 nm320 nm

12

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(46) 12(32) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

41° 32° 48°305 nm310 nm315 nm320 nm

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

8

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

33°33° 53°305 nm310 nm315 nm320 nm

13

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

38° 33° 65°305 nm310 nm315 nm320 nm

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

80° 33° 83°305 nm310 nm315 nm320 nm

14

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

80° 34° 71°305 nm310 nm315 nm320 nm

Wavelength [nm]

RA

TIO

051

/QA

SU

ME


NBSpectra

=65

295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15



15

300 305 310 315 320 325−0.04

−0.02

0

0.02

0.04

0.06

0.08

0.1

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

16

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

070QASUME

0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [251 252 254 255 256]

RA

TIO

070

/QA

SU

ME

251 252 254 255 256

305 nm310 nm315 nm320 nm

17

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(91) 8(68) 10(46) 12(32) 14(38) 16(58) 18(82) 20(105)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 32°32°305 nm310 nm315 nm320 nm

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(46) 12(32) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 32°32°305 nm310 nm315 nm320 nm

18

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 42°42°305 nm310 nm315 nm320 nm

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 33° 83°305 nm310 nm315 nm320 nm

19

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

68° 34° 83°305 nm310 nm315 nm320 nm

Wavelength [nm]

RA

TIO

070

/QA

SU

ME


NBSpectra

=51

295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15



20

300 305 310 315 320 325

−0.02

0

0.02

0.04

0.06

0.08

0.1

0.12

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

21

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

075QASUME

0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [251 252 254 255 256]

RA

TIO

075

/QA

SU

ME

251 252 254 255 256

305 nm310 nm315 nm320 nm

22

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(91) 8(68) 10(46) 12(32) 14(38) 16(58) 18(82) 20(105)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

53°53° 58°305 nm310 nm315 nm320 nm

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(46) 12(32) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

41° 32° 48°305 nm310 nm315 nm320 nm

23

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 33° 77°305 nm310 nm315 nm320 nm

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

80° 33° 83°305 nm310 nm315 nm320 nm

24

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 34° 83°305 nm310 nm315 nm320 nm

Wavelength [nm]

RA

TIO

075

/QA

SU

ME


NBSpectra

=54

295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15



25

300 305 310 315 320 325−0.18

−0.16

−0.14

−0.12

−0.1

−0.08

−0.06

−0.04

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

26

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

117QASUME

0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [251 252 254 255 256]

RA

TIO

117

/QA

SU

ME

251 252 254 255 256

305 nm310 nm320 nm330 nm345 nm358 nm

27

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(91) 8(68) 10(46) 12(32) 14(38) 16(58) 18(82) 20(105)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

32° 32°32°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(46) 12(32) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

41° 32°32°305 nm310 nm320 nm330 nm345 nm358 nm

28

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

51° 33° 48°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

74° 33° 77°305 nm310 nm320 nm330 nm345 nm358 nm

29

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

74° 34° 71°305 nm310 nm320 nm330 nm345 nm358 nm

Wavelength [nm]

RA

TIO

117

/QA

SU

ME


NBSpectra

=54

300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15



30

300 310 320 330 340 350 360−0.04

−0.02

0

0.02

0.04

0.06

0.08

0.1

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

31

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

126QASUME

0 12 0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [251 252 253 254 255 256]

RA

TIO

126

/QA

SU

ME

251 252 253 254 255 256

305 nm310 nm315 nm320 nm

32

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(91) 8(68) 10(46) 12(32) 14(38) 16(58) 18(82) 20(105)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

53°53° 58°305 nm310 nm315 nm320 nm

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(46) 12(32) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

37° 32° 43°305 nm310 nm315 nm320 nm

33

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

8

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

51° 35°35°305 nm310 nm315 nm320 nm

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 33° 71°305 nm310 nm315 nm320 nm

34

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

80° 33° 83°305 nm310 nm315 nm320 nm

290 295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

80° 34° 83°305 nm310 nm315 nm320 nm

35

Wavelength [nm]

RA

TIO

126

/QA

SU

ME


NBSpectra

=58

295 300 305 310 315 320 325 3300.8

0.85

0.9

0.95

1

1.05

1.1

1.15



300 305 310 315 320 325

−0.06

−0.04

−0.02

0

0.02

0.04

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

36

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

145QASUME

0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [252 254 255 256]

RA

TIO

145

/QA

SU

ME

252 254 255 256

305 nm310 nm320 nm330 nm345 nm358 nm

37

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(46) 12(32) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 41°41°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

51° 33° 83°305 nm310 nm320 nm330 nm345 nm358 nm

38

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 33° 77°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

80° 34° 71°305 nm310 nm320 nm330 nm345 nm358 nm

39

Wavelength [nm]

RA

TIO

145

/QA

SU

ME


NBSpectra

=45

300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15



300 310 320 330 340 350 360−0.03

−0.02

−0.01

0

0.01

0.02

0.03

0.04

0.05

0.06

0.07

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

40

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

150QASUME

0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [252 253 254 255 256]

RA

TIO

150

/QA

SU

ME

252 253 254 255 256

305 nm310 nm320 nm330 nm345 nm358 nm

41

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(46) 12(32) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

41° 32° 35°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

8

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 33° 53°305 nm310 nm320 nm330 nm345 nm358 nm

42

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

68° 38° 44°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 33° 77°305 nm310 nm320 nm330 nm345 nm358 nm

43

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

80° 34° 71°305 nm310 nm320 nm330 nm345 nm358 nm

Wavelength [nm]

RA

TIO

150

/QA

SU

ME


NBSpectra

=67

300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15



44

300 310 320 330 340 350 360

−0.06

−0.04

−0.02

0

0.02

0.04

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

45

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

151QASUME

0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [252 253 254 255 256]

RA

TIO

151

/QA

SU

ME

252 253 254 255 256

305 nm310 nm320 nm330 nm345 nm358 nm

46

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(46) 12(32) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 32° 59°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

8

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

32°32° 39°305 nm310 nm320 nm330 nm345 nm358 nm

47

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

74° 35° 48°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 33° 77°305 nm310 nm320 nm330 nm345 nm358 nm

48

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 34° 71°305 nm310 nm320 nm330 nm345 nm358 nm

Wavelength [nm]

RA

TIO

151

/QA

SU

ME


NBSpectra

=63

300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15



49

300 310 320 330 340 350 360−0.08

−0.06

−0.04

−0.02

0

0.02

0.04

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

50

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

158QASUME

0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [251 252 254 255 256]

RA

TIO

158

/QA

SU

ME

251 252 254 255 256

305 nm310 nm320 nm330 nm345 nm358 nm

51

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(91) 8(68) 10(46) 12(32) 14(38) 16(58) 18(82) 20(105)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 32°32°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(46) 12(32) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

51° 32°32°305 nm310 nm320 nm330 nm345 nm358 nm

52

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 38°38°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

80° 33° 83°305 nm310 nm320 nm330 nm345 nm358 nm

53

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 34° 83°305 nm310 nm320 nm330 nm345 nm358 nm

Wavelength [nm]

RA

TIO

158

/QA

SU

ME


NBSpectra

=59

300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15



54

300 310 320 330 340 350 360−0.07

−0.06

−0.05

−0.04

−0.03

−0.02

−0.01

0

0.01

0.02

0.03

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

55

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

165QASUME

0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [253 254 255 256]

RA

TIO

165

/QA

SU

ME

253 254 255 256

305 nm310 nm320 nm330 nm345 nm358 nm

56

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

8

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

51° 35°35°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 35°35°305 nm310 nm320 nm330 nm345 nm358 nm

57

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 33° 77°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

80° 34° 71°305 nm310 nm320 nm330 nm345 nm358 nm

58

Wavelength [nm]

RA

TIO

165

/QA

SU

ME


NBSpectra

=52

300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15



300 310 320 330 340 350 360−0.06

−0.04

−0.02

0

0.02

0.04

0.06

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

59

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

166QASUME

0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [251 252 254 255 256]

RA

TIO

166

/QA

SU

ME

251 252 254 255 256

305 nm310 nm320 nm330 nm345 nm358 nm

60

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(91) 8(68) 10(46) 12(32) 14(38) 16(58) 18(82) 20(105)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

74° 46°46°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(46) 12(32) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

41° 32° 59°305 nm310 nm320 nm330 nm345 nm358 nm

61

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

74° 33° 48°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

68° 34° 77°305 nm310 nm320 nm330 nm345 nm358 nm

62

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

74° 34° 71°305 nm310 nm320 nm330 nm345 nm358 nm

Wavelength [nm]

RA

TIO

166

/QA

SU

ME


NBSpectra

=52

300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15



63

300 310 320 330 340 350 360

−0.06

−0.04

−0.02

0

0.02

0.04

0.06

0.08

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

64

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

172QASUME

0 12 0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [251 252 253 254 255 256]

RA

TIO

172

/QA

SU

ME

251 252 253 254 255 256

305 nm310 nm320 nm330 nm345 nm358 nm

65

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(91) 8(68) 10(46) 12(32) 14(38) 16(58) 18(82) 20(105)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

53°53° 58°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(46) 12(32) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

37° 32°32°305 nm310 nm320 nm330 nm345 nm358 nm

66

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

8

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

41° 33°33°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 35° 77°305 nm310 nm320 nm330 nm345 nm358 nm

67

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

80° 33° 77°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

80° 34° 71°305 nm310 nm320 nm330 nm345 nm358 nm

68

Wavelength [nm]

RA

TIO

172

/QA

SU

ME


NBSpectra

=51

300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15



300 310 320 330 340 350 360

−0.02

0

0.02

0.04

0.06

0.08

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

69

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

186QASUME

0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [251 253 254 255 256]

RA

TIO

186

/QA

SU

ME

251 253 254 255 256

305 nm310 nm320 nm330 nm345 nm358 nm

70

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(91) 8(68) 10(46) 12(32) 14(38) 16(58) 18(82) 20(105)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 32°32°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

8

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

43°43° 48°305 nm310 nm320 nm330 nm345 nm358 nm

71

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

74° 33° 48°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

80° 33° 65°305 nm310 nm320 nm330 nm345 nm358 nm

72

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

68° 34° 71°305 nm310 nm320 nm330 nm345 nm358 nm

Wavelength [nm]

RA

TIO

186

/QA

SU

ME


NBSpectra

=53

300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15



73

300 310 320 330 340 350 360−0.1

−0.08

−0.06

−0.04

−0.02

0

0.02

0.04

0.06

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

74

255 255.2 255.4 255.6 255.8 256 256.2 256.4 256.6 256.8 2570

1

2

3

4

5

6


Day of Year

UV

Inde

x

197QASUME

0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT] ON DAYS: [255 256]

RA

TIO

197

/QA

SU

ME

255 256

305 nm310 nm320 nm330 nm345 nm358 nm

75

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

33°33° 83°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 35° 83°305 nm310 nm320 nm330 nm345 nm358 nm

76

Wavelength [nm]

RA

TIO

197

/QA

SU

ME


NBSpectra

=30

300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15



300 310 320 330 340 350 360−0.09

−0.08

−0.07

−0.06

−0.05

−0.04

−0.03

−0.02

−0.01

0

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]


MEAN

5/95th percentile

77

250 251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

ISQQASUME

0 12 0 12 0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15

1.2Global irradiance ratios ISQ/QASUME at INTA:07−Sep−2009(250) to 13−Sep−2009(256)

TIME [UT] ON DAYS: [250 251 252 253 254 255 256]

RA

TIO

ISQ

/QA

SU

ME

250 251 252 253 254 255 256

305 nm310 nm320 nm330 nm345 nm358 nm

78

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15

1.2Global irradiance ratios ISQ/QASUME at INTA:07−Sep−2009(250)

wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(91) 8(67) 10(45) 12(32) 14(38) 16(58) 18(81) 20(105)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

41° 31° 87°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(91) 8(68) 10(46) 12(32) 14(38) 16(58) 18(82) 20(105)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

85° 32° 70°305 nm310 nm320 nm330 nm345 nm358 nm

79

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(46) 12(32) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 32°32°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

8

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

51° 33° 53°305 nm310 nm320 nm330 nm345 nm358 nm

80

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

57° 33° 83°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 33° 83°305 nm310 nm320 nm330 nm345 nm358 nm

81

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 34° 83°305 nm310 nm320 nm330 nm345 nm358 nm

Wavelength [nm]

RA

TIO

ISQ

/QA

SU

ME

Mean ratio ISQ/QASUME at INTA:07−Sep−2009(250) to 13−Sep−2009(256)

NBSpectra

=113

300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15



82

300 310 320 330 340 350 360−0.07

−0.06

−0.05

−0.04

−0.03

−0.02

−0.01

0

0.01

0.02

0.03

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]

INTA, ISQ, September 2009

MEAN

5/95th percentile

83

251 252 253 254 255 256 2570

1

2

3

4

5

6

7


Day of Year

UV

Inde

x

IZ3QASUME

0 12 0 12 0 12 0 12 0 12 00.8

0.85

0.9

0.95

1

1.05

1.1

1.15

1.2Global irradiance ratios IZ3/QASUME at INTA:08−Sep−2009(251) to 13−Sep−2009(256)

TIME [UT] ON DAYS: [251 253 254 255 256]

RA

TIO

IZ3/

QA

SU

ME

251 253 254 255 256

305 nm310 nm320 nm330 nm345 nm358 nm

84

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15

1.2Global irradiance ratios IZ3/QASUME at INTA:08−Sep−2009(251)

wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(91) 8(68) 10(46) 12(32) 14(38) 16(58) 18(82) 20(105)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

46° 32° 58°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

8

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(82) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

33°33° 53°305 nm310 nm320 nm330 nm345 nm358 nm

85

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

UV

Inde

x

6(92) 8(68) 10(46) 12(33) 14(39) 16(59) 18(83) 20(106)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

62° 33° 77°305 nm310 nm320 nm330 nm345 nm358 nm

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

7

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 34° 83°305 nm310 nm320 nm330 nm345 nm358 nm

86

290 300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15


wl [nm]10 15 20

0

1

2

3

4

5

6

UV

Inde

x

6(92) 8(68) 10(47) 12(34) 14(40) 16(60) 18(83) 20(107)0.8

0.85

0.9

0.95

1

1.05

1.1

1.15


TIME [UT](SZA)

86° 34° 83°305 nm310 nm320 nm330 nm345 nm358 nm

Wavelength [nm]

RA

TIO

IZ3/

QA

SU

ME

Mean ratio IZ3/QASUME at INTA:08−Sep−2009(251) to 13−Sep−2009(256)

NBSpectra

=70

300 310 320 330 340 350 360 3700.8

0.85

0.9

0.95

1

1.05

1.1

1.15



87

300 310 320 330 340 350 360−0.02

−0.01

0

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

Wavelength [nm]

SH

ICR

ivm

wav

elen

gth

shift

[nm

]

INTA, IZ3, September 2009

MEAN

5/95th percentile

88

20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1

Brewer Temperature [degC]

Rat

io B

rew

er/Q

asum

e

Temperature Dependence of Brewer #017 , INTA, September 2009

UV Data: Spectral Mean Ratios [305 − 310 nm]Linear Fit, slope=−0.28 %/K

20 25 30 35 40 450.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e



89

20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e



20 25 30 35 40 450.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e



90

20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e



20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e



91

20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e



20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e



92

20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e



20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e



93

20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e



20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e



94

20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e



20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e

Temperature Dependence of Brewer #185 (IZ3) , INTA, September 2009


95

20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e

Temperature Dependence of Brewer #186, INTA, September 2009


20 22 24 26 28 30 32 34 36 38 400.85

0.9

0.95

1

1.05

1.1


Rat

io B

rew

er/Q

asum

e

Temperature Dependence of Brewer #197, INTA, September 2009


96

300 310 320 330 340 350 360 3700.85

0.9

0.95

1

1.05

1.1

Wavelength [nm]

Rat

io to

QA

SU

ME

Mean ratios to QASUME for all Brewers at the 4th RBCC−E Campaign, INTA, September 2009

017051070075117126145150151158165166172186197isqiz3

280 300 320 340 360 380 4000.98

0.985

0.99

0.995

1

1.005

1.01

1.015

1.02

Wavelength [nm]

Rat

io to

tota

l mea

n

Qasume Responsivity change, INTA, September 2009

251253254255

97

09/07 09/08 09/09 09/10 09/11 09/12 09/13 09/1424

26

28

30

32

34

36

38

40

Time

Tem

pera

ture

[deg

]

Qasume temperature = 26.0 +− 0.1Diffuser temperature = 29.6 +− 2.2

98

protocol of the intercomparison at inta, el arenosillo, spain on … · 2010. 2. 15. · 2/11/2009...

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