Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Aerosol characterization using satellite remote sensing of light
  pollution sources at night   A demanding challenge in atmospheric research is the night-time
characterization of aerosols using passive techniques, that is, by extracting
information from scattered light that has not been emitted by the observer.
Satellite observations of artificial night-time lights have been used to
retrieve some basic integral parameters, like the aerosol optical depth.
However, a thorough analysis of the scattering processes allows one to obtain
substantially more detailed information on aerosol properties. In this Letter
we demonstrate a practicable approach for determining the aerosol particle size
number distribution function in the air column, based on the measurement of the
angular radiance distribution of the scattered light emitted by night-time
lights of cities and towns, recorded from low Earth orbit. The method is
self-calibrating and does not require the knowledge of the absolute city
emissions. The input radiance data are readily available from several
spaceborne platforms, like the VIIRS-DNB radiometer onboard the Suomi-NPP
satellite.

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The categories of this paper are: math
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
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The categories of this paper are: q-bio