Abstract
Abstract. A 15-channel airborne sun-tracking photometer has been developed. The instrument provides aerosol optical depths over a wide spectral range (0.34–2.25 μm) with an accuracy (ΔAOD) of approximately 0.01. Taking measurements at different altitudes allow us to derive the aerosol extinction vertical profile. Thanks to the wide spectral range of the instrument, information on the aerosol size distribution along the vertical is also available.
Highlights
Introduction aerosol scattering and abHsoyrpdtiroon lporogcyessaesnAderosol size distdreibpuetnidoennicnefowrmheantiothnecasnpeEbcetarraerlttrrhiaenvSgedeyfisrsotlmaergmtheeeAnOouDghsp(eKctirnaglAtmospheric aerosols play a role in the earth radiative budget
Due to their interaction with solar and thermal radiation, aerosols first cool the atmosphere–surface system and by absorbing sunlight in the atmosphere, they further cool the surface but warm the atmosphere. They modify the temperature and humidity profiles which creates a more stable temperature profile that results in less cumulus cloud cover (Hansen et al, 1997; Koren et al, 2004)
To investigate aerosol–cloud interactions, it is important to determine the 3-D distribution of aerosol properties
Summary
Introduction aerosol scattering and abHsoyrpdtiroon lporogcyessaesnAderosol size distdreibpuetnidoennicnefowrmheantiothnecasnpeEbcetarraerlttrrhiaenvSgedeyfisrsotlmaergmtheeeAnOouDghsp(eKctirnaglAtmospheric aerosols play a role in the earth radiative budget (see, for example, Hansen et al, 1997; Ramanathan et al, 2001 or Kaufman et al, 2002). Hereinafter, we will limit ticle size, aerosol optical depth and instrument FOV, it has 125 our study to the channels that are in atmospheric windows The effect of atmospheric forward scattering based, airborne and automobile measurements are discussed 90 andAamcoicmropparroiscoenssworitcholmidpaurtpersotfihleespoissifitinoanlloyfptrhoevSiduend.based oτn(λd,izre)c=t sτoeaxlatr(λir,rza)d+iaτnecmxet(mλe,zas)urements increases with pa(2r-) ticle size, aerosol optical depth and instrument FOV; it has on time, latitude, and longitude, provided by a GPS system.
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