Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Estimating black carbon aging time-scales with a particle-resolved
  aerosol model   Understanding the aging process of aerosol particles is important for
assessing their chemical reactivity, cloud condensation nuclei activity,
radiative properties and health impacts. In this study we investigate the aging
of black carbon containing particles in an idealized urban plume using a new
approach, the particle-resolved aerosol model PartMC-MOSAIC. We present a
method to estimate aging time-scales using an aging criterion based on cloud
condensation nuclei activation. The results show a separation into a daytime
regime where condensation dominates and a nighttime regime where coagulation
dominates. For the chosen urban plume scenario, depending on the
supersaturation threshold, the values for the aging time-scales vary between
0.06 hours and 10 hours during the day, and between 6 hours and 20 hours during
the night.

20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th