Abstract

The optical reference plane of a J1002 shaped dome diffuser from CMS-Schreder was determined using direct normal spectral solar UV irradiance measurements relative to a flat Teflon diffuser. The spectroradiometers were calibrated relative to the same irradiance standard. The optical reference plane of the shaped J1002 diffuser is 5.3mm behind the top of the dome with an uncertainty of 1.0mm. Solar UV irradiance measurements based on a lamp calibration using the top of the dome as the reference will overestimate the global solar irradiance by 2.1% for the usual calibration distance of 500mm.

© 2006 Optical Society of America

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References

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  1. G. Seckmeyer, A. Bais, G. Bernhard, M. Blumthaler, P. Eriksen, R. L. McKenzie, C. Roy, and M. Miyauchi, WMO-GAW Rep. 125 (World Meteorological Organization, 2001).
  2. G. Bernhard and G. Seckmeyer, Photochem. Photobiol. 65, 923 (1997).
    [CrossRef]
  3. J. Schreder, M. Blumthaler, and M. Huber, 'Design of an input optic for solar UV measurements,' Internet Photochem. Photobiol., http://www.photobiology.com/UVR98/schreder/index.htm
  4. P. Manninen, J. Hovila, L. Seppälä, P. Kärhä, L. Ylianttila, and E. Ikonen, Metrologia 43, SI20 (2006).
    [CrossRef]
  5. J. Hovila, M. Mustonen, P. Kärhä, and E. Ikonen, Appl. Opt. 44, 5894 (2005).
    [CrossRef] [PubMed]

2006

P. Manninen, J. Hovila, L. Seppälä, P. Kärhä, L. Ylianttila, and E. Ikonen, Metrologia 43, SI20 (2006).
[CrossRef]

2005

1997

G. Bernhard and G. Seckmeyer, Photochem. Photobiol. 65, 923 (1997).
[CrossRef]

Bais, A.

G. Seckmeyer, A. Bais, G. Bernhard, M. Blumthaler, P. Eriksen, R. L. McKenzie, C. Roy, and M. Miyauchi, WMO-GAW Rep. 125 (World Meteorological Organization, 2001).

Bernhard, G.

G. Bernhard and G. Seckmeyer, Photochem. Photobiol. 65, 923 (1997).
[CrossRef]

G. Seckmeyer, A. Bais, G. Bernhard, M. Blumthaler, P. Eriksen, R. L. McKenzie, C. Roy, and M. Miyauchi, WMO-GAW Rep. 125 (World Meteorological Organization, 2001).

Blumthaler, M.

G. Seckmeyer, A. Bais, G. Bernhard, M. Blumthaler, P. Eriksen, R. L. McKenzie, C. Roy, and M. Miyauchi, WMO-GAW Rep. 125 (World Meteorological Organization, 2001).

J. Schreder, M. Blumthaler, and M. Huber, 'Design of an input optic for solar UV measurements,' Internet Photochem. Photobiol., http://www.photobiology.com/UVR98/schreder/index.htm

Eriksen, P.

G. Seckmeyer, A. Bais, G. Bernhard, M. Blumthaler, P. Eriksen, R. L. McKenzie, C. Roy, and M. Miyauchi, WMO-GAW Rep. 125 (World Meteorological Organization, 2001).

Hovila, J.

P. Manninen, J. Hovila, L. Seppälä, P. Kärhä, L. Ylianttila, and E. Ikonen, Metrologia 43, SI20 (2006).
[CrossRef]

J. Hovila, M. Mustonen, P. Kärhä, and E. Ikonen, Appl. Opt. 44, 5894 (2005).
[CrossRef] [PubMed]

Huber, M.

J. Schreder, M. Blumthaler, and M. Huber, 'Design of an input optic for solar UV measurements,' Internet Photochem. Photobiol., http://www.photobiology.com/UVR98/schreder/index.htm

Ikonen, E.

P. Manninen, J. Hovila, L. Seppälä, P. Kärhä, L. Ylianttila, and E. Ikonen, Metrologia 43, SI20 (2006).
[CrossRef]

J. Hovila, M. Mustonen, P. Kärhä, and E. Ikonen, Appl. Opt. 44, 5894 (2005).
[CrossRef] [PubMed]

Kärhä, P.

P. Manninen, J. Hovila, L. Seppälä, P. Kärhä, L. Ylianttila, and E. Ikonen, Metrologia 43, SI20 (2006).
[CrossRef]

J. Hovila, M. Mustonen, P. Kärhä, and E. Ikonen, Appl. Opt. 44, 5894 (2005).
[CrossRef] [PubMed]

Manninen, P.

P. Manninen, J. Hovila, L. Seppälä, P. Kärhä, L. Ylianttila, and E. Ikonen, Metrologia 43, SI20 (2006).
[CrossRef]

McKenzie, R. L.

G. Seckmeyer, A. Bais, G. Bernhard, M. Blumthaler, P. Eriksen, R. L. McKenzie, C. Roy, and M. Miyauchi, WMO-GAW Rep. 125 (World Meteorological Organization, 2001).

Miyauchi, M.

G. Seckmeyer, A. Bais, G. Bernhard, M. Blumthaler, P. Eriksen, R. L. McKenzie, C. Roy, and M. Miyauchi, WMO-GAW Rep. 125 (World Meteorological Organization, 2001).

Mustonen, M.

Roy, C.

G. Seckmeyer, A. Bais, G. Bernhard, M. Blumthaler, P. Eriksen, R. L. McKenzie, C. Roy, and M. Miyauchi, WMO-GAW Rep. 125 (World Meteorological Organization, 2001).

Schreder, J.

J. Schreder, M. Blumthaler, and M. Huber, 'Design of an input optic for solar UV measurements,' Internet Photochem. Photobiol., http://www.photobiology.com/UVR98/schreder/index.htm

Seckmeyer, G.

G. Bernhard and G. Seckmeyer, Photochem. Photobiol. 65, 923 (1997).
[CrossRef]

G. Seckmeyer, A. Bais, G. Bernhard, M. Blumthaler, P. Eriksen, R. L. McKenzie, C. Roy, and M. Miyauchi, WMO-GAW Rep. 125 (World Meteorological Organization, 2001).

Seppälä, L.

P. Manninen, J. Hovila, L. Seppälä, P. Kärhä, L. Ylianttila, and E. Ikonen, Metrologia 43, SI20 (2006).
[CrossRef]

Ylianttila, L.

P. Manninen, J. Hovila, L. Seppälä, P. Kärhä, L. Ylianttila, and E. Ikonen, Metrologia 43, SI20 (2006).
[CrossRef]

Appl. Opt.

Metrologia

P. Manninen, J. Hovila, L. Seppälä, P. Kärhä, L. Ylianttila, and E. Ikonen, Metrologia 43, SI20 (2006).
[CrossRef]

Photochem. Photobiol.

G. Bernhard and G. Seckmeyer, Photochem. Photobiol. 65, 923 (1997).
[CrossRef]

Other

J. Schreder, M. Blumthaler, and M. Huber, 'Design of an input optic for solar UV measurements,' Internet Photochem. Photobiol., http://www.photobiology.com/UVR98/schreder/index.htm

G. Seckmeyer, A. Bais, G. Bernhard, M. Blumthaler, P. Eriksen, R. L. McKenzie, C. Roy, and M. Miyauchi, WMO-GAW Rep. 125 (World Meteorological Organization, 2001).

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Figures (2)

Fig. 1
Fig. 1

Direct solar measurement setup with the two entrance optics mounted on the solar tracker. The upper part shows the entrance optics pointed toward the sun with the mounted shading tubes. In the lower part, the shading tubes have been removed and the diffusers can be seen.

Fig. 2
Fig. 2

Ratios of four solar UV spectra measured with the J1002 and D5 diffusers. The thick horizontal line intersects the ordinate axis at 1.022 and represents the average of the four spectral measurements.

Tables (1)

Tables Icon

Table 1 Ratio [ ( J 1002 D 5 - 1 ) × 100 ] of the Solar Spectra Measured with the J1002 Shaped Dome and D5 Flat Diffuser a

Equations (2)

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Δ I ds I = 2 Δ s d .
Δ s = I J 1002 I D 5 I D 5 d 2 ,

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