Objective
The EC-ALOMAR project consists of the design, manufacture, and test of multiple detector channels for a new and powerful Rayleigh/Mie/Raman lidar instrument. The latter is to perform environmental monitoring of the abundance and characterization of the stratospheric aerosol, the transport of this aerosol as well as the thermal structure in the very air mass that carries the aerosol. The entire new detection assembly is to be integrated into the lidar instrument at the ALOMAR Observatory (located north of the arctic circle in Northern Norway). Thereafter we expect to obtain high resolution altitude profiles of aerosol loading, temperature, and wind from 10 to 40 km several times during each observation day.
The scientific and technical aims of the EC-ALOMAR project will be achieved by using multi- channel detection, ranging in wavelength from the ultraviolet via the visible to the infrared part of the spectrum, (a) for aerosol and cloud particle detection and characterization, (b) for Doppler wind, and (c) various temperature measurements. These measurements will be based on and use the following techniques:
a) For aerosol and cloud particle observations a combination of three independent schemes:
a1) Observation of N2 vibrational Raman scatter for the measurement of air density profiles, unbiased by the presence of aerosols;
a2) Comparison of Rayleigh vs. Mie scatter at widely different wavelengths to characterize the aerosol and cloud particle size distributions;
a3) Polarization studies of the Rayleigh scatter for separation of spherical from non-spherical particles.
b) The 3 components of the wind vector will be determined from measurements of the Doppler shift of the backscattered Cabannes line using high resolution Fabry-Perot interferometers.
c) For temperature measurements three different techniques will be applied and will give altitude-overlapping data:
c1) Integration of measured air density profile;
c2) Two-channel measurement of the N2 + O2 rotational Raman scatter;
c3) Measurement of the Doppler width of the Cabannes line using high resolution Fabry-Perot interferometers.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
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Coordinator
BONN
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.