Table 3: Dust optical properties from CALIOP and HSRL [80].

Date CALIOP
18 August 19 August 20 August HSRL: 28 August
Location Northwest Coast of Africa Atlantic Ocean ~1300 km from the coast Atlantic Ocean ~2400 km from the coast Gulf of Mexico ~7600 km away from the source

Vertical extent 1–6 km 1.5–5 km 2–5 km 1.5–3.3 km
0.6–1.2 0.3–0.45 0.29 ± 0.03 0.08–0.09
41 ± 3 sr 41 ± 4 sr 41 ± 6 sr 45.8 ± 0.8 sr
52 ± 5 sr 55 ± 5 sr 54 ± 13 sr 44 ± 8 sr
color ratio 0.74 ± 0.07 0.75 ± 0.08 0.72 ± 0.04 0.62 ± 0.01
τ 1064/532 nm0.97 ± 0.02 1.01 ± 0.05 0.93 ± 0.17 0.62 ± 0.13
0.31 ± 0.01 0.31 ± 0.01 0.32 ± 0.01 0.32 ± 0.01
Analysis method Two wavelengths for 1064 nmTwo wavelengths for 1064 nmOpaque water cloud For 1064 nmTwo wavelengths for 1064 nm