Search
Now showing items 1-10 of 27
Toward More Accurate Retrievals of Ice Water Content from Radar Measurements of Clouds
Publisher: American Meteorological Society
Abstract: There has been considerable discussion concerning the accuracy of values of ice water content (IWC) in ice clouds derived from measurements of radar reflectivity (Z). In this paper, the various published relationships that ...
The Need to Represent Raindrop Size Spectra as Normalized Gamma Distributions for the Interpretation of Polarization Radar Observations
Publisher: American Meteorological Society
Abstract: Polarization radar techniques essentially rely on detecting the oblateness of raindrops to provide a measure of mean raindrop size and then using this information to give a better estimate of rainfall rate R than is available ...
The Potential of Spaceborne Dual-Wavelength Radar to Make Global Measurements of Cirrus Clouds
Publisher: American Meteorological Society
Abstract: Spaceborne millimeter-wave radar has been identified as a possible instrument to make global measurements in ice clouds, which have an important but poorly understood role in the earth?s radiation budget. In this paper, ...
Cloud Liquid Water and Ice Content Retrieval by Multiwavelength Radar
Publisher: American Meteorological Society
Abstract: Cloud liquid water and ice content retrieval in precipitating clouds by the differential attenuation method using a dual-wavelength radar, as a function of the wavelength pair, is first discussed. In the presence of ...
The Retrieval of Stratocumulus Cloud Properties by Ground-Based Cloud Radar
Publisher: American Meteorological Society
Abstract: The radiative characteristics of stratocumulus clouds are dependent upon their microphysical properties, primarily the liquid water content and effective radius of the drop population. Aircraft observations of droplet ...
The Potential of a Spaceborne Cloud Radar for the Detection of Stratocumulus Clouds
Publisher: American Meteorological Society
Abstract: The radar reflectivity and liquid water content of stratocumulus clouds have been computed from cloud droplet spectra recorded during more than 4000 km of cloud penetrations by an aircraft, and the probability of detecting ...
Parameterizing Ice Cloud Inhomogeneity and the Overlap of Inhomogeneities Using Cloud Radar Data
Publisher: American Meteorological Society
Abstract: Cloud variability on scales smaller than the gridbox size of numerical forecast and climate models is believed to be important in determining the radiative effects of clouds, and increasingly attempts are being made to ...
Stratocumulus Liquid Water Content from Dual-Wavelength Radar
Publisher: American Meteorological Society
Abstract: A technique is described to retrieve stratocumulus liquid water content (LWC) using the differential attenuation measured by vertically pointing radars at 35 and 94 GHz. Millimeter-wave attenuation is proportional to LWC ...
Comparison of ECMWF Winter-Season Cloud Fraction with Radar-Derived Values
Publisher: American Meteorological Society
Abstract: Of great importance for the simulation of climate using general circulation models is their ability to represent accurately the vertical distribution of fractional cloud amount. In this paper, a technique to derive cloud ...