Search Results - "Jens Reichardt"
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1
On the Shapes and Sizes of Cirrus Particles Causing Specular Reflections in Lidar Signals
Published in EPJ Web of conferences (2020)“…A new method to determine the projection-area- equivalent radius of cirrus particles is presented. Together with direct lidar measurements of ice water content…”
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2
Power laws for backscattering by ice crystals of cirrus clouds
Published in Optics express (18-09-2017)“…The backscattering Mueller matrix for the typical shapes of ice crystals of cirrus (hexagonal columns and plates, bullets and droxtals) in the case of their…”
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3
Investigations to Hygroscopic Aerosol Growth Within the Convective Boundary Layer
Published in EPJ Web of conferences (2020)“…We present a new method to determine the hygroscopic growth of atmospheric particles. This method combines lidar measurements with high temporal resolution of…”
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4
Fluorescing aerosols and clouds: investigations of co-existence
Published in EPJ Web of Conferences (01-01-2018)“…RAMSES of the Lindenberg Meteorological Observatory, Germany, is the first multipurpose lidar to routinely measure the fluorescence spectra of atmospheric…”
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5
How stratospheric are deep stratospheric intrusions? LUAMI 2008
Published in Atmospheric chemistry and physics (19-07-2016)“…A large-scale comparison of water-vapour vertical-sounding instruments took place over central Europe on 17 October 2008, during a rather homogeneous deep…”
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6
Retrieving microphysics of cirrus clouds from data measured with raman lidar ramses and a tilted ceilometer
Published in EPJ Web of Conferences (01-01-2018)“…To develop a microphysical model of cirrus clouds, data obtained by Raman lidar RAMSES and a tilted ceilometer are studied synergistically. The measurements…”
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7
Accurate absolute measurements of the Raman backscattering differential cross-section of water and ice and its dependence on the temperature and excitation wavelength
Published in Journal of quantitative spectroscopy & radiative transfer (01-06-2017)“…Measurements of Raman backscattering spectra between −15°C and 22°C in liquid water (including its supercooled state) and in polycrystalline ice (−35°C to 0°C)…”
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Relation between Raman backscattering from droplets and bulk water: Effect of refractive index dispersion
Published in Journal of quantitative spectroscopy & radiative transfer (01-03-2018)“…•Lorentz reciprocal theorem applied to evaluate Raman backscattering differential cross-section.•Oscillatory dependence of the scattering by spherical…”
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9
Relevance of mountain wave cooling for the formation of polar stratospheric clouds over Scandinavia: Mesoscale dynamics and observations for January 1997
Published in Journal of Geophysical Research (27-01-2001)“…The effect of mesoscale mountain wave‐induced temperature anomalies on the formation potential of polar stratospheric clouds above northern Scandinavia is…”
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10
Spectrometric fluorescence and Raman lidar: absolute calibration of aerosol fluorescence spectra and fluorescence correction of humidity measurements
Published in Atmospheric measurement techniques (02-01-2023)“…RAMSES is the operational spectrometric fluorescence and Raman lidar at the Lindenberg Meteorological Observatory. It employs three spectrometers, with the UVA…”
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11
Enhanced lidar backscattering by quasi-horizontally oriented ice crystal plates in cirrus clouds
Published in Journal of quantitative spectroscopy & radiative transfer (01-06-2003)“…The backscattering of light by quasi-horizontally oriented hexagonal ice plates is investigated because of its pertinence to lidar measurements of cirrus…”
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12
High accuracy humidity measurements using the standardized frequency method with a research upper-air sounding system
Published in Meteorologische Zeitschrift (Berlin, Germany : 1992) (15-10-2001)“…Water vapour is the most important greenhouse gas in the atmosphere. The knowledge of water vapour distribution is of great importance for both operational…”
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13
The behavior of high-CAPE (convective available potential energy) summer convection in large-domain large-eddy simulations with ICON
Published in Atmospheric chemistry and physics (22-03-2021)“…Current state-of-the-art regional numerical weather prediction (NWP) models employ kilometer-scale horizontal grid resolutions, thereby simulating convection…”
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14
Relation between Raman backscattering from droplets and bulk water: Effect of refractive index dispersion
Published 21-12-2017“…J. Quant. Spectrosc. Radiat. Transf. 208 (2018) 172-178 A theoretical framework is presented that permits investigations of the relation between inelastic…”
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15
Optical-microphysical cirrus model
Published in Journal of Geophysical Research - Atmospheres (27-11-2008)“…A model is presented that permits the simulation of the optical properties of cirrus clouds as measured with depolarization Raman lidars. It comprises a…”
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16
The natural history of the double pylorus
Published in Radiology (01-01-1978)“…A study of 11 patients with "double pylorus" revealed that a second channel between the gastric antrum and the duodenal bulb is the result of ulcer…”
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