Table 2.

Aerosol uncertainty targets for one standard deviation (1_σ). Assumption: aerosol optical depth τ_555f ≥ 0.05 and τ_555c ≥ 0.02, otherwise uncertainty targets become difficult to meet. The effective radius is a function of the mode radius r_n and the mode width σ_g (Eq. (9)). The effective variance is a function of the size distribution mode width σ_g only (Eq. (10)). The root-mean-square deviation (RMSD) for the simulated retrievals presented in this paper are provided in the fourth column.

Param.	Description	1σ desired uncertainty	RMSD (simulated)
τ555f	fine mode optical depth at 555 nm	0.02	0.0427 (0.0372‡)
reff,f	fine mode effective radius	0.015 μm	0.0196 μm
veff,f	fine mode effective variance	0.05	0.0487
rnf	fine mode real part	0.02	0.0293
SSAf	fine mode SSA	0.02	0.0209
τ555c	coarse mode optical depth at 555 nm	0.02	0.0132
reff,c	coarse mode radius	0.15 μm	0.148 μm
veff,c	coarse mode effective variance	0.05	0.0669
CHL	chlorophyll concentration	0.7 mg/m3	2.59 mg/m3
v	windspeed	0.5 m/s	0.501 m/s

^‡RMSD vs HSRL-1 total (fine and coarse) AOD at 532 nm from SABOR.