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NASA Technical Reports Server (NTRS) 20160007639: A Comparison of N...
by NASA Technical Reports Server (NTRS)
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Collections of particulates on both Los Alamos Scientific
Laboratory (LASL) and National Center for Atmospheric
Research (NCAR) filter systems were made from an RB 57F
aircraft flown at one tropospheric and six stratospheric
altitudes over the Boulder, Colorado, area. This daytime
flight was spanned by lidar returns on evenings before
and after the flight. Scanning electron microscope
examination of the LASL filters showed no evidence of
solid particulates greater than 2 micrometers (the
instrumental resolving power). Quantitative analysis of
the NCAR filters yielded chemical composition and mass.
The mass values were normalized to the total air flow
through the filters to yield mass mixing ratios at the
various altitudes. The lidar returns, normalized to
molecular densities obtained from sonde data, were put in
the form of particulate scattering divided by molecular
scattering, i. e., an optical mixing ratio. A plot of the
optical mixing ratio versus mass mixing ratio, in the
stratosphere, yielded linear relationship, for five of
the six data points, going through the origin.
Date Published: 2016-07-13 05:31:12
Identifier: NASA_NTRS_Archive_20160007639
Item Size: 577239
Language: english
Media Type: texts
# Topics
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