Model description
The aerosol models are used in the C6 over land algorithm are described in Table 1.
|
Model |
Mode |
rv (μm) |
σ |
V0 (μm3/μm2) |
Refractive Index: k |
ω0 / g (0.47/0.55/0.65/2.1μm) for τ0.55 = 0.5 |
|
Continental |
|
|
|
|
|
0.90/0.89/0.88/0.67 0.64/0.63/0.63/0.79 |
|
|
Soluble |
0.176 |
1.09 |
3.05 |
1.53-0.005i; 0.47 μm 1.53-0.006i; 0.55 μm 1.53-0.006i; 0.65 μm 1.42-0.01i; 2.12 μm |
|
|
|
Dust |
17.6 |
1.09 |
7.364 |
1.53-0.008i; 0.47 μm 1.53-0.008i; 0.55 μm 1.53-0.008i; 0.65 μm 1.22-0.009i; 2.12 μm |
|
|
|
Soot |
0.050 |
0.693 |
0.105 |
1.75-0.45i; 0.47 μm 1.75-0.44i; 0.55 μm 1.75-0.43i; 0.65 μm 1.81-0.50i; 2.12 μm |
|
|
Moderately absorbing / Developing |
|
|
|
|
|
0.93/0.92/0.91/0.87 0.68/0.65/0.61/0.68 |
|
|
Accum |
0.0203τ + 0.145 |
0.1365τ + 0.3738 |
0.1642 τ0.7747 |
1.43 - (-0.002τ+0.008)i |
|
|
|
Coarse |
0.3364τ + 3.101 |
0.098τ + 0.7292 |
0.1482 τ0.6846 |
1.43 - (-0.002τ+0.008)i |
|
|
Non-absorb/ Urban-Ind |
|
|
|
|
|
0.95/0.95/0.94/0.90 0.71/0.68/0.65/0.64 |
|
|
Accum |
0.0434τ + 0.1604 |
0.1529τ + 0.3642 |
0.1718 τ0.8213 |
1.42 - (-0.0015τ+0.007)i |
|
|
|
Coarse |
0.1411τ + 3.3252 |
0.1638τ + 0.7595 |
0.0934 τ0.6394 |
1.42 - (-0.0015τ+0.007)i |
|
|
Absorbing/ Heavy Smoke |
|
|
|
|
|
0.88/0.87/0.85/0.70 0.64/0.60/0.56/0.64 |
|
|
Accum |
0.0096τ + 0.1335 |
0.0794τ + 0.3834 |
0.1748 τ0.8914 |
1.51 – 0.02i |
|
|
|
Coarse |
0.9489τ + 3.4479 |
0.0409τ + 0.7433 |
0.1043 τ0.6824 |
1.51 – 0.02i |
|
|
Spheroid/ Dust |
|
|
|
|
|
0.94/0.95/0.96/0.98 0.71/0.70/0.69/0.71 |
|
|
Accum |
0.1416 τ -0.0519 |
0.7561 τ 0.148 |
0.0871 τ1.026 |
1.48τ—0.021 – (0.0025 τ0.132)i; 0.47 μm 1.48τ—0.021 – 0.002i; 0.55 μm 1.48τ—0.021 – (0.0018 τ-0.08)i; 0.65 μm 1.46τ—0.040 – (0.0018 τ-0.30)i; 2.12 μm |
|
|
|
Coarse |
2.2 |
0.554 τ -0.0519 |
0.6786 τ1.0569 |
1.48τ—0.021 – (0.0025 τ0.132)i; 0.47 μm 1.48τ—0.021 – 0.002i; 0.55 μm 1.48τ—0.021 – (0.0018 τ-0.08)i; 0.65 μm 1.46τ—0.040 – (0.0018 τ-0.30)i; 2.12 μm |
|
|
|
|
|
|
|
|
|
Model assignment
The land algorithm does not have the flexibility to choose between fine aerosol models, the fine model is prescribed as a function of location and season according to the following map, from Levy et al. (2013). Location in green are assigned the non-absorbing (ω~0.95) model, and locations in red are assigned the highly absorbing (ω~0.85) model. The moderately absorbing (ω~0.90) is assumed everywhere else.
