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Second-Order Doppler Shift of RASS Echoes
Publisher: American Meteorological Society
Abstract: High-resolution measurements of the frequency shift of radio acoustic sounding system echoes show small (≤10?3) systematic deviations from values that are expected according to basic theory. It is shown that these deviations ...
Analysis of Z–R Relations Based on LDR Signatures within the Melting Layer
Publisher: American Meteorological Society
Abstract: The inclusion of polarimetric measurements for the quantitative precipitation estimation (QPE) by weather radars as well as space- and airborne radars is considered most promising now-a-days. Because the melting layer ...
Measurements of Momentum Flux in the Boundary Layer by RASS
Publisher: American Meteorological Society
Abstract: Ground-based remote measurements of the turbulent vertical flux of horizontal momentum in the atmospheric boundary layer are described. For this experiment a wind profiler was operated in the radio acoustic sounding system ...
Eddy Covariance Measurements with Closed-Path Optical Humidity Sensors: A Feasible Concept?
Publisher: American Meteorological Society
Abstract: Humidity spectra obtained with a closed-path optical hygrometer (LI-6262) show an apparent low-pass characteristic with a cutoff frequency varying between 0.01 and 0.1 Hz. Laboratory measurements revealed that contamination ...
Rain Attenuation of Radar Echoes Considering Finite-Range Resolution and Using Drop Size Distributions
Publisher: American Meteorological Society
Abstract: The classical rain attenuation correction scheme of Hitschfeld and Bordan (HIBO) and the newer iterative approach by Hildebrand (HL) are reconsidered. Although the motivation for the HL algorithm was an extension into ...
Measurement of Water Vapor Flux Profiles in the Convective Boundary Layer with Lidar and Radar-RASS
Publisher: American Meteorological Society
Abstract: A remote-sensing method to retrieve vertical profiles of water vapor flux in the convective boundary layer by using a differential absorption lidar and a radar-radio acoustic sounding system is described. The system's ...
One-Year Operational Measurements with a Sonic Anemometer–Thermometer and a Doppler Sodar
Publisher: American Meteorological Society
Abstract: A Doppler sodar and an ultrasonic anemometer?thermometer, which are operated continuously at a nuclear research center in Germany, are described. Mean values and second moments including turbulent surface fluxes recorded ...
Profiles of Raindrop Size Distributions as Retrieved by Microrain Radars
Publisher: American Meteorological Society
Abstract: Data of vertically pointing microrain radars (MRRs), located at various sites around the Baltic Sea, were analyzed for a period of several years. From the Doppler spectra profiles of drop size distributions (DSDs) are ...
A 35-GHz Polarimetric Doppler Radar for Long-Term Observations of Cloud Parameters—Description of System and Data Processing
Publisher: American Meteorological Society
Abstract: 35-GHz radar has been operating at the Meteorological Observatory Lindenberg (Germany) since 2004, measuring cloud parameters continuously. The radar is equipped with a powerful magnetron transmitter and a high-gain antenna ...