Description: Das Projekt "Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR): Entwicklung von Instrumenten zur Messung von Aerosol, Wolkenpartikeln, Temperaturstruktur und Thermodynamik in der polaren Stratosphaere" wird vom Umweltbundesamt gefördert und von Universität Bonn, Physikalisches Institut durchgeführt. 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.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Wolkenbildung ? Wolke ? Bonn ? Bewölkung ? Aerologie ? Messgerät ? Atmosphärisches Aerosol ? Interferometrie ? Lidar ? Meteorologie ? Stickstoff ? Temperaturverteilung ? Thermodynamik ? Wind ? Aerosol ? Lufttemperatur ? Messtechnik ? Partikelgrößenverteilung ? Temperaturmessung ? Arktis ? Messdaten ? Stratosphäre ? Studie ? Polargebiet ? Mittlere Atmosphäre ? Atmosphäre ? Atmosphärenchemie ? Fernerkundung ? Partikel ? ALOMAR ?
Region: Nordrhein-Westfalen
Bounding box: 6.76339° .. 6.76339° x 51.21895° .. 51.21895°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1992-10-01 - 1994-09-30
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