Subject: |
NSA/SURFSPECALB/C1 - Data processing problem |
Affected Datastreams: |
nsasurfspecalb1mlawerC1.c1 |
Description |
An intermediate process, surfspecalb_transform, of the surfspecalb1mlawer VAP incorrectly treated its input datastream (intermediate datastream surfspecalbmfrsr.c0) as it had a bin alignment equal to the end of the bin, but it was actually the middle of the bin. The result was a shifting of the values with respect to time 10 seconds to the left. The impact on the primary measurement, spectral albedo, was considered to be less than the uncertainty of that measurement.
The problem occurs for all measurements dimensioned by time. |
Measurements |
- direct_normal_broadband_mfrsrC1 (Direct Normal Broadband Irradiance for mfrsrC1)
- up_hemisp_narrowband_mfr10mC1 (10 meter Narrowband Upwelling Hemispheric Irradiance)
- hemisp_broadband_mfrsrC1 (Hemispheric Broadband Irradiance for mfrsrC1, offset and cosine corrected, broadband scale factor applied)
- surface_albedo_mfr_broadband_10m (Broadband surface albedo at the 10m tower)
- base_time (Base time in Epoch)
- hemisp_broadband_mfrsr (Best measured hemispheric broadband irradiance from mfrsrC1)
- direct_normal_narrowband_mfrsrC1 (Narrowband Direct Normal Irradiance for mfrsrC1)
- hemisp_broadband_facility_mfrsr (Hemispheric broadband irradiance used in calculating be_hemisp_broadband_mfrsr and surface_albedo_mfr_broadband_10m)
- hemisp_narrowband_mfrsr (Best measured hemispheric narrowband irradiance from mfrsrC1)
- diffuse_hemisp_narrowband_mfrsrC1 (Narrowband Diffuse Hemispheric Irradiance for mfrsrC1)
- be_surface_albedo_psp_broadband_10m (PSP broadband surface albedo at the 10m tower (up_short_hemisp_qcrad1longC1/down_short_hemisp_qcrad1longC1))
- cosine_solar_zenith_angle_mfr10mC1 (10 meter Cosine Solar Zenith Angle)
- be_up_hemisp_broadband_mfr10mC1 (Best estimate 10 meter broadband upwelling hemispheric irradiance)
- hemisp_narrowband_mfrsrC1 (Narrowband Hemispheric Irradiance for mfrsrC1)
- time_offset (Time offset from base_time)
- estimated_spectral_albedo_10m (Spectral albedo estimated from mfr albedos using surface type and Mlawer algorithm at 10m tower)
- surface_albedo_mfr_narrowband_10m (Narrowband surface albedo at the 10m tower)
- be_up_hemisp_broadband_status_mfr10mC1 (Estimation status flag for Best estimate 10 meter broadband upwelling hemispheric irradiance)
- diffuse_hemisp_broadband_mfrsrC1 (Diffuse Hemispheric Broadband Irradiance for mfrsrC1)
- time (Time offset from midnight)
- be_surface_albedo_mfr_narrowband_10m_status (Estimation status flag for Best estimate Narrowband surface albedo at the 10m tower)
- be_up_hemisp_narrowband_status_mfr10mC1 (Estimation status flag for Best estimate 10 meter narrowband upwelling hemispheric irradiance)
- be_hemisp_narrowband_status_mfrsr (Estimation status flag for best estimate best measured hemispheric narrowband irradiance from mfrsrC1)
- be_hemisp_broadband_mfrsr (Best estimate Best measured hemispheric broadband irradiance from mfrsrC1)
- hemisp_narrowband_facility_mfrsr (Hemispheric narrowband irradiance used in calculating be_hemisp_narrowband_mfrsr,surface_albedo_mfr_narrowband_10m, and surface_albedo_mfr_narrowband_10m)
- be_hemisp_broadband_status_mfrsr (Estimation status flag for best estimate best measured hemispheric broadband irradiance from mfrsrC1)
- be_surface_albedo_mfr_broadband_10m_status (Estimation status flag for Best estimate Broadband surface albedo at the 10m tower)
- be_surface_albedo_mfr_narrowband_10m (Best estimate Narrowband surface albedo at the 10m tower)
- be_surface_albedo_mfr_broadband_10m (Best estimate Broadband surface albedo at the 10m tower)
- up_hemisp_broadband_mfr10mC1 (10 meter Broadband Upwelling Hemispheric Irradiance)
- be_hemisp_narrowband_mfrsr (Best estimate Best measured hemispheric narrowband irradiance from mfrsrC1)
- be_up_hemisp_narrowband_mfr10mC1 (Best estimate 10 meter narrowband upwelling hemispheric irradiance)
- broadband_from_spectral_albedo_10m (Broadband albedo at 10m tower estimated from integrating spectral albedos weighted by surface flux calculated from CHARTS)
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