| Subject: | GRW/TSI/M1 - Shadowband Misalignment |
| DataStreams: | grwtsiskycoverM1.b1, grwtsiskyimageM1.a1, grwtsicldmaskM1.a1
|
| Description: | The shadowband was intermittently misaligned and not completely masking the sun because
the mirror became loose from the shaft while being polished. The shadowband was realigned
on 1/14 but by 1/27 was again slightly misaligned. The instrument was reoriented with true
north on 1/27 and the shadowband adjusted again on 1/31. The problem was corrected on
2/2 when the mirror mounting was tightened and the shadowband realigned. |
| Measurements: | grwtsicldmaskM1.a1: - Cloud decision images, Total Sky Imager, PNG format(png)
grwtsiskycoverM1.b1: - region_sun_count
- count_sub_horz
- region_horizon_count_thin
- region_horizon_count_opaque
- count_mask
- count_thin
- region_sun_count_thin
- region_zenith_count_thin
- region_sun_count_opaque
- Cloud amount, opaque (percent)(percent_opaque)
- count_sky
- Cloud amount, thin (percent)(percent_thin)
- count_sub_proczen
- count_opaque
- region_horizon_count
- count_box
- region_zenith_count
- region_zenith_count_opaque
grwtsiskyimageM1.a1: - JPEG data stream - documentation not yet available
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