PVC/SKYRAD/M1 - Reprocess: Incorrect IRT Configuration

The SKYRAD IRT was installed temporarily (waiting for the new enclosure) in
a vertical orientation, without the use of the gold mirror. When irt_comm
was started, the emissivity parameter in the startup file was not changed to 1.000 
compensate for the absence of the mirror, resulting in a positive bias of about 5 K.

These data may be corrected by adjusting the radiance values for the difference in 
emmissivity.

• sky_ir_temp_min
• IR Brightness Temperature(sky_ir_temp)
• sky_ir_temp_max

PVC/SKYRAD/M1 - IRT scale factor

The IRT was replaced with a unit with the wrong analog output configuration, such that the 
sky temperature was below the measurable range, resulting in a constant output of 0 
volts or 173.2 K.

• inst_sky_ir_signal

• sky_ir_temp_std
• sky_ir_temp_min
• IR Brightness Temperature(sky_ir_temp)
• sky_ir_temp_max

PVC/SKYRAD/M1 - Instrument failure, Instrument problem, Instrument noise problem

Short direct normal is close to zero when the sun is out (compared with TSI). Erratic 
behavior where short direct normal is recording overnight beginning on 10/16 through 10/17.

• inst_down_long_hemisp1_case_resist
• inst_diffuse
• inst_direct_normal
• inst_down_long_hemisp2_case_resist
• time
• time_offset
• lat
• inst_down_long_hemisp2_tp
• alt
• lon
• inst_global
• base_time
• inst_sky_ir_signal
• inst_down_long_hemisp2_dome_resist
• inst_down_long_hemisp1_dome_resist
• inst_down_long_hemisp1_tp

• sky_ir_temp_std
• down_long_hemisp2_std
• inst_down_long_hemisp2_case_temp
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp1)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp2)
• Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Maxima(down_short_diffuse_hemisp_max)
• alt
• lat
• time_offset
• Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
• down_short_hemisp_std
• inst_down_long_hemisp2_dome_temp
• inst_down_long_hemisp1_dome_temp
• IR Brightness Temperature(sky_ir_temp)
• base_time
• inst_down_long_hemisp1_tp
• logger_temp
• sky_ir_temp_min
• Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• inst_down_long_hemisp2_tp
• down_long_hemisp1_max
• down_long_hemisp2_min
• down_long_hemisp1_std
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• Downwelling Shortwave Diffuse Hemisp. Irrad., Ventilated Pyranometer, Minima(down_short_diffuse_hemisp_min)
• down_short_diffuse_hemisp_std
• down_long_hemisp2_max
• short_direct_normal_std
• time
• lon
• inst_down_long_hemisp1_case_temp
• down_long_hemisp1_min
• sky_ir_temp_max
• vBatt