Table 1 Comparison of particles containing the different number of black carbon cores (ncore)

From: Locating the missing absorption enhancement due to multi‒core black carbon aerosols

Particle number fraction a

Type based on ncore

ncore = 1

ncore > 1

Sum

Type based on different proxy features

M1b: Dc > 200 nm

0

62%

15%

100%

1

7%

16%

M2b: Dp > 400 nm

0

39%

4%

100%

1

30%

27%

M1×M2b

0

64%

16%

100%

1

5%

15%

  1. a For a total of 1310 coated black carbon (BC) particles;
  2. b M1 represents whether the cumulative equivalent volume diameter of all BC cores in a particle (Dc) is larger than 200 nm. If so, the value is 1; otherwise, it is 0. M2 represents whether the diameter of the whole particle (Dp) is larger than 400 nm. If so, the value is 1; otherwise, it is 0. Only when M1 and M2 meet both conditions is M1×M2 = 1.
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