Search
CSV
RISTo What Extent Can Raindrop Size Be Determined by a Multiple-Frequency Radar?
Publisher: American Meteorological Society
Abstract: In this paper, an analytical treatment of the atmospheric remote sensing problem of determining the raindrop size distribution (DSD) with a spaceborne multifrequency microwave nadir-looking radar system is presented. It ...
Estimating the Uncertainty in Passive-Microwave Rain Retrievals
Publisher: American Meteorological Society
Abstract: Current passive-microwave rain-retrieval methods are largely based on databases built offline using cloud models. Since the vertical distribution of hydrometeors within the cloud has a large impact on upwelling brightness ...
A Surface Wind Model–Based Method to Estimate Rain-Induced Radar Path Attenuation over Ocean
Publisher: American Meteorological Society
Abstract: The rainfall retrieved using the Tropical Rainfall Measuring Mission (TRMM) precipitation radar (PR) depends on estimating the radar signal path-integrated attenuation using the surface reference technique (SRT). This ...
Principal Components of Multifrequency Microwave Land Surface Emissivities. Part I: Estimation under Clear and Precipitating Conditions
Publisher: American Meteorological Society
Abstract: he upcoming Global Precipitation Measurement mission will provide considerably more overland observations over complex terrain, high-elevation river basins, and cold surfaces, necessitating an improved assessment of the ...
A Probabilistic View on Raindrop Size Distribution Modeling: A Physical Interpretation of Rain Microphysics
Publisher: American Meteorological Society
Abstract: he raindrop size distribution (RDSD) is defined as the relative frequency of raindrops per given diameter in a volume. This paper describes a mathematically consistent modeling of the RDSD drawing on probability theory. ...
Intrinsic Ambiguities in the Retrieval of Rain Rates from Radar Returns at Attenuating Wavelengths
Publisher: American Meteorological Society
Abstract: It is well known that there are significant deterministic ambiguities inherent in trying to determine the particular rain-rate profile that produced some given sequence of air- or spaceborne radar echo powers at a single ...
Parameterizing the Raindrop Size Distribution
Publisher: American Meteorological Society
Abstract: This paper addresses the problem of finding a parametric form for the raindrop size distribution (DSD) that 1) is an appropriate model for tropical rainfall, and 2) involves statistically independent parameters. Such a ...
Parallel Direct Solution of the Ensemble Square Root Kalman Filter Equations with Observation Principal Components
Publisher: American Meteorological Society
Abstract: AbstractThe ensemble square root Kalman filter (ESRF) is a variant of the ensemble Kalman filter used with deterministic observations that includes a matrix square root to account for the uncertainty of the unperturbed ...
Stochastic Filtering of Rain Profiles Using Radar, Surface-Referenced Radar, or Combined Radar Radiometer Measurements
Publisher: American Meteorological Society
Abstract: This paper describes a computationally efficient nearly optimal Bayesian algorithm to estimate rain (and drop size distribution) profiles, given a radar reflectivity profile at a single attenuating wavelength. In addition ...
Optimal Estimation of Rain-Rate Profiles from Single-Frequency Radar Echoes
Publisher: American Meteorological Society
Abstract: The significant ambiguities inherent in the determination of a particular vertical rain intensity profile from a given time profile of radar echo powers measured by a downward-looking (spaceborne or airborne) radar at a ...