| Description: | In the qc_down_short_diffuse_hemisp field, QC failures from the test indicated by bit_13,
"data failed tracker off test", were set incorrectly as bit_9, "GSW2SumSW (93 > SZA > 75
and SumSW > 50; GSW/SumSW < 0.85 or GSW/SumSW > 1.15)". Solar tracker failures are
correctly indicated in the aqc_down_short_diffuse_hemisp field.
In the qc_short_direct_normal field, QC failures from the test indicated by bit_10, "data
failed tracker off test", were set incorrectly as bit_9, "GSW2SumSW (93 > SZA > 75 and
SumSW > 50; GSW/ SumSW < 0.85 or GSW/SumSW > 1.15)". Solar tracker failures are correctly
indicated in the aqc_short_direct_normal field.
This is a software problem in the VAP that impacts all dates for which a solar tracker
failure occurred prior to 20100608 for each facility. The 20020312 start date was chosen
because the DQR system can not link multiple start/end date/times with multiple facilities
within the same report. As a result, the latest start date corresponding to C3 was
chosen. The actual start dates for which this problem could have occurred for each facility
are as follows:
C1: 19961010
C2: 19981029
C3: 20020312
Please note that if a solar tracker failure is not indicated by the
aqc_down_short_diffuse_hemisp and/or aqc_short_direct_normal fields you can ignore this DQR. |
| Measurements: | twpqcrad1longC2.c1: - Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
- Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
twpqcrad1longC3.c1: - Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
- Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
twpqcrad1longC1.c1: - Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
- Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
|