SGP/CSPHOT/C1 - Obstruction

Spiderwebs found in the collimator tubes affected the 1640 channel data.

• TripletVar_1640
• Aerosol optical thickness, at 1640 nm, from CSPHOT(aot_1640)

SGP/CSPHOT/C1 - Aerosol Optical Depth biased high for unknown reasons

During this time period the aerosol optical depth is biased high by about +1. It 
apparently corrected itself at the end of this period so the cause of the offset is undetermined. 
It likely affected all the other data-products as well. The 3 point variance used to 
filter cloud affected observations are also unusually high even for cloud free days, so most 
data will already be marked bad automatically in the higher order products.

• Aerosol optical thickness, angstrom coefficient, at 440-675 nm, from CSPHOT(Angstrom440_675)
• Aerosol optical thickness, at 440 nm, from CSPHOT(aot_440)
• TripletVar_440
• Aerosol optical thickness, at 500 nm, from CPSHOT(aot_500)
• TripletVar_500
• TripletVar_870
• WaterError
• Aerosol optical thickness, angstrom coefficient, at 500-870 nm, from CSPHOT(Angstrom500_870)
• Aerosol optical thickness, angstrom coefficient, at 340-440 nm, from CSPHOT(Angstrom340_440)
• TripletVar_1640
• TripletVar_340
• TripletVar_380
• TripletVar_670
• Aerosol optical thickness, at 670 nm, from CSPHOT(aot_670)
• Aerosol optical thickness, angstrom coefficient, at 440-675 nm, polarized(Angstrom440_675_Polar)
• TripletVar_1020
• Aerosol optical thickness, at 380 nm, from CSPHOT(aot_380)
• Column precip water vapor(pwv)
• Aerosol optical thickness, angstrom coefficient, at 380-500 nm, from CSPHOT(Angstrom380_500)
• Aerosol optical thickness, angstrom coefficient, at 440-870 nm, from CSPHOT(Angstrom440_870)
• Aerosol optical thickness, at 340 nm, from CSPHOT(aot_340)
• Aerosol optical thickness, at 1020 nm, from CSPHOT(aot_1020)
• Aerosol optical thickness, at 870 nm, from CSPHOT(aot_870)
• Aerosol optical thickness, at 1640 nm, from CSPHOT(aot_1640)

SGP/CSPHOT/C1 - Instrument Problem

There was a possible obstruction or instrument malfunction causing errors in the data and 
showing diurnal dependence in the AOT data.

• Aerosol optical thickness, angstrom coefficient, at 440-675 nm, from CSPHOT(Angstrom440_675)
• Aerosol optical thickness, angstrom coefficient, at 500-870 nm, from CSPHOT(Angstrom500_870)
• TripletVar_1640
• TripletVar_670
• Aerosol optical thickness, angstrom coefficient, at 440-675 nm, polarized(Angstrom440_675_Polar)
• Aerosol optical thickness, angstrom coefficient, at 440-870 nm, from CSPHOT(Angstrom440_870)
• Aerosol optical thickness, at 1640 nm, from CSPHOT(aot_1640)
• zenith
• Aerosol optical thickness, at 440 nm, from CSPHOT(aot_440)
• Aerosol optical thickness, at 500 nm, from CPSHOT(aot_500)
• TripletVar_440
• TripletVar_870
• TripletVar_500
• WaterError
• Aerosol optical thickness, angstrom coefficient, at 340-440 nm, from CSPHOT(Angstrom340_440)
• TripletVar_340
• last_processing_date
• TripletVar_380
• TripletVar_1020
• Aerosol optical thickness, at 670 nm, from CSPHOT(aot_670)
• Aerosol optical thickness, at 380 nm, from CSPHOT(aot_380)
• Column precip water vapor(pwv)
• Aerosol optical thickness, angstrom coefficient, at 380-500 nm, from CSPHOT(Angstrom380_500)
• Aerosol optical thickness, at 340 nm, from CSPHOT(aot_340)
• Aerosol optical thickness, at 1020 nm, from CSPHOT(aot_1020)
• Aerosol optical thickness, at 870 nm, from CSPHOT(aot_870)