FKB/AOS/M1 - failed neph motor

The chopper motor in the "dry" nephelometer (Neph1) stopped working on Julian day 343.15 
or 12/9/07 0330 UTC. This motor controls a chopper wheel which alternates the signal 
between a "dark" phase, "calibration" phase and signal. Logging on the instrument was turned 
off on 12/18/2007 at 0100 UTC.The second nephelometer (Neph2) was used to replace Neph1. 
Data logging resumed on day 352 or 12/20/2007 using the replacement neph. From day 347 to 
352, Neph 2 was logging data without use of the humidifier. The neph2 data during this 
time can be used as the dry neph scattering coefficients.

There are no dry nephelometer scattering coefficients from day 343 to 347. From day 

347 to 352 use the Neph2 data for the dry nephelometer scattering coefficients. From day 
352 to 365 the dry scattering coefficients were logged as Neph1 and there are no 
humidified neph measurements from day 343 to 365.

• Bbs_R_Dry_10um_Neph3W_1
• Bs_B_Wet_10um_Neph3W_2
• Bs_B_Dry_1um_Neph3W_1
• Bs_G_Dry_1um_Neph3W_1
• Bbs_G_Wet_10um_Neph3W_2
• Bbs_B_Dry_1um_Neph3W_1
• Bbs_B_Wet_1um_Neph3W_2
• Bs_R_Wet_1um_Neph3W_2
• Bbs_G_Dry_10um_Neph3W_1
• Bs_G_Wet_10um_Neph3W_2
• Bbs_R_Wet_10um_Neph3W_2
• Bs_R_Dry_1um_Neph3W_1
• Bbs_R_Dry_1um_Neph3W_1
• Bs_B_Dry_10um_Neph3W_1
• Bbs_B_Dry_10um_Neph3W_1
• Bbs_G_Wet_1um_Neph3W_2
• Bbs_R_Wet_1um_Neph3W_2
• Bbs_B_Wet_10um_Neph3W_2
• Bs_B_Wet_1um_Neph3W_2
• Bs_G_Wet_1um_Neph3W_2
• Bs_R_Wet_10um_Neph3W_2
• Bs_R_Dry_10um_Neph3W_1
• Bs_G_Dry_10um_Neph3W_1
• Bbs_G_Dry_1um_Neph3W_1