Erlangen 2018 – wissenschaftliches Programm
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UP: Fachverband Umweltphysik
UP 5: Atmosphere - trace gases, aerosols; Methods -measurement techniques
UP 5.3: Vortrag
Montag, 5. März 2018, 15:15–15:30, G 1.011
Lidar observations of the stratospheric aerosol layer above Northern Norway — •Arvid Brand1, Gerd Baumgarten1, Franz Josef Lübken1, Jens Fiedler1, Christian von Savigny2, and Jacob Zalach2 — 1Leibniz-Institut für Atmosphärenphysik, Kühlungsborn, Deutschland — 2Ernst-Moritz-Arndt Universität, Greifswald, Deutschland
The Stratospheric sulfate aerosol (SSA) layer is of fundamental importance for the radiative balance of the atmosphere. The layer is found in altitudes between the tropopause and 30 km. The radiative effect is due to scattering of solar and absorption of thermal infrared radiation by the aerosol particles. We use the state of the art Doppler Rayleigh/Mie/Raman lidar at the ALOMAR research station located in Northern Norway (69N, 16E) to observe the aerosol layer and derive microphysical properties. The aerosol and molecular signal is therefore derived by using a multi wavelength approach and different scattering processes. The lidar is located at the edge of the polar vortex and allows the investigation of SSA from small spatial and temporal scales to decadal variatons.
In this work results of the observations of the SSA layer above ALOMAR for the time span 2000 to 2017 are presented and discussed.