Microwave radiometric technique to retrieve vapor, liquid and ice. I. Development of a neural network-based inversion method

  title={Microwave radiometric technique to retrieve vapor, liquid and ice. I. Development of a neural network-based inversion method},
  author={Li Li and Jothiram Vivekanandan and Chi Hou Chan and Leung Tsang},
  journal={IEEE Trans. Geosci. Remote. Sens.},
With the advent of the microwave radiometer, passive remote sensing of clouds and precipitation has become an indispensable tool in a variety of meteorological and oceanographical applications. There is wide interest in the quantitative retrieval of water vapor, cloud liquid, and ice using brightness temperature observations in scientific studies such as Earth's radiation budget and microphysical processes of winter and summer clouds. Emission and scattering characteristics of hydrometeors… 
Microwave radiometric technique to retrieve vapor, liquid and ice. II. Joint studies of radiometer and radar in winter clouds
It is shown that vertical profiles of median size diameter, number concentration, liquid water content, and ice water content can be inferred by combining radar reflectivity and radiometer observations.
Retrieval of Slant Water Vapor Path and Slant Liquid Water from Microwave Radiometer Measurements during the DYNAMO Experiment
A new retrieval strategy to estimate slant water vapor path (SWP) and slant liquid water (SLW) using UM-radiometer measurements from zenith to low elevation angles at a variety of azimuth angles is developed, which may contribute to improvements in forecasting of convective initiation and precipitation.
Modeling and measurement of rainfall by ground-based multispectral microwave radiometry
A new statistical inversion algorithm, trained by synthetic data and based on principal component analysis is also developed to classify the meteorological background, to identify the rain regime, and to retrieve rain rate from passive radiometric observations.
Ground-based multifrequency microwave radiometry for rainfall remote sensing
Inversion algorithms for ground-based microwave radiometric retrieval of surface rain-rate, integrated cloud parameters, and slant-path attenuation are proposed and tested and selection of optimal frequency sets and polynomial retrieval algorithms for rainfall parameters is carried out and discussed.
As an important tool of atmospheric remote sensing, microwave radiometers are used for temperature profiling, and vapor and liquid column measurements (Hogg et al. 1983; Solheim et al.1998).
A cloud detection algorithm using the downwelling infrared radiance measured by an infrared pyrometer of the ground-based microwave radiometer
Abstract. For better utilization of the ground-based microwave radiometer, it is important to detect the cloud presence in the measured data. Here, we introduce a simple and fast cloud detection
Characterization of downwelling radiance measured from a ground-based microwave radiometer using numerical weather prediction model data
Abstract. The ground-based microwave sounding radiometers installed at nine weather stations of Korea Meteorological Administration alongside with the wind profilers have been operating for more than
Convective cloud discrimination using multi-frequency microwave signatures of the AMSR-E sensor: evaluation over the Tibetan Plateau
Multi-frequency passive microwave remote sensing affords a unique opportunity to understand various phenomena; low-frequency microwaves penetrate clouds and are able to observe Earth surface
Radiometric profiling of tropospheric temperature, humidity and cloud liquid
We describe a radiometric profiler that pro- vides accurate temperature, humidity and cloud liquid profiles during clear and cloudy conditions. The radi- ometer observes radiation intensity at 12


Rainfall, total water, ice water, and water vapor over sea from polarized microwave simulations and Special Sensor Microwave/Imager data
A radiative-transport model has been developed to study the emitted radiation from variable cloud and rain systems at the frequencies of the special sensor microwave imager (SSM/I). The model is
Ice Water Path Estimation and Characterization Using Passive Microwave Radiometry
Abstract Microwave emission emerging from a precipitating cloud top and lying in a radiometer's field of view represents the culmination of a complex interaction between emitted microwave radiation
A model function for ocean microwave brightness temperatures
We derive a relatively simple, yet accurate, relationship between the microwave brightness temperature of the ocean and conventional oceanographic and meteorological parameters. To begin with, the
Radiative Transfer to Space through a Precipitating Cloud at Multiple Microwave Frequencies. Part I: Model Description
Abstract In a two-part study we investigate the impact of time-dependent cloud microphysical structure on the transfer to space of passive microwave radiation at several frequencies across the EHF
The response of the SSM/I to the marine environment. I - An analytic model for the atmospheric component of observed brightness temperatures
Abstract A comprehensive closed-form parameterization has been developed for the contribution of the nonprecipitating marine atmosphere to microwave brightness temperatures observed by the Special
Ground-based microwave radiometric retrieval of precipitable water vapor in the presence of clouds with high liquid content
A dual-channel microwave radiometer that measures precipitable water vapor and cloud liquid was operated during the 1979 Severe Storms and Mesoscale Experiment (Sesame). Conventional retrievals of
A Review of Ground-Based Remote Sensing of Temperature and Moisture by Passive Microwave Radiometers
  • J. Askne, E. Westwater
  • Environmental Science, Mathematics
    IEEE Transactions on Geoscience and Remote Sensing
  • 1986
Remote sounding of atmospheric variables by groundbased microwave radiometers has proved to be useful for several applications. These radiometers are used to measure profiles or integrated values of
A Steerable Dual-Channel Microwave Radiometer for Measurement of Water Vapor and Liquid in the Troposphere
Abstract An instrument that remotely senses the integrated amounts of water vapor and liquid on a path through the atmosphere is discussed. The vapor and liquid are measured simultaneously but
A Dual-Channel Microwave Radiometer for Measurement of Precipitable Water Vapor and Liquid
The design and performance of a two-channel ground-based microwave radiometer (20.6 and 31.6 GHz) for measurement of total integrated water vapor and cloud liquid in a vertical column are discussed.
Radiometric Observations during the Canadian Atlantic Storms Program
Abstract Radiometrically determined temperature profiles were compared with radiosonde observations during the Canadian Atlantic Storms Program (CASP). A total of 108 profiles were available for the