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Global Monitoring Division (1151 words) |
 | The UV spectroradiometer uses a Jobin-Yvon DH10 double monochromator that is interfaced with a Compaq personal computer for control and data acquisition. |
| Calibration of the spectroradiometer is performed on site using a standard 1000-W FEL lamp with calibration traceable to the National Institute of Standards and Technology (NIST). |
| The spectroradiometer is programmed to begin measurements at dawn and perform scans at 5 solar zenith angle (SZA) intervals throughout the day beginning and ending at 95°, except that during the middle of the day the system switches to a scan every 15 minutes. |
| Spectroradiometer Accessories (130 words) |
| Spectroradiometer: An instrument for measurement of radiometric quantities in narrow wavelength intervals over a given spectral region (e.g. |
| The optical quantity measured by a spectroradiometer system is determined by the input optic employed, as described in the table below. |
| All photometric, colorimetric, UV radiometric etc. quantities are most accurately determined by performing spectroradiometric measurements and using software to integrate/weight values as defined by CIE etc. However, Bentham also supplies a range of filter based radiometers/photometers with close match spectral responses for simple integral type measurements. |
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