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Fig. 6.1
Available number of data values for each of the 15 size class intervals for
pcasp
and 52
size class intervals for
tsi3320
instrumentation systems
volume radius for the aerosol size spectrum (reference level). (ii)
N
is the total
aerosol number concentration and d
N
is the aerosol number concentration in the
aerosol radius class interval d
r
a
. (iii) d(ln
r
an
) is equal to
dr
r
a
a
for the aerosol radius
class interval
r
a
to
r
a
+ d
r
a
.
6.3.1
Data I: SAFARI 2000 CV-580 Aerosol Size Spectra, Dry
Season 2000 (CARG)
The mean and standard deviation of normalized aerosol size spectrum were com-
puted for 245,037 and 189,761 individual spectra (Table
6.1
), respectively, for
pcasp
and
tsi3320
aerosol measurement instrument systems and shown in Fig.
6.2
along with the model-predicted universal normalized aerosol size spectrum.
6.3.2
Data II: World Data Centre for Aerosols
The annual mean normalized aerosol size spectra with associated standard deviation
were computed for the three stations (Table
6.3
) Ny Ålesund, Pallas, and Hohen-
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