منابع مشابه
Soil moisture and rainfall estimation over a semiarid environment with the ESTAR microwave radiometer
The application of an airborne electronically steered thinned array L-band radiometer (ESTAR) for soil moisture mapping was investigated over the semiarid rangeland Walnut Gulch Watershed located In southeastern Arizona. During the experiment, antecedent rainfall and evaporation were very dif ferent and resulted in a wide range of soil moisture conditions. The high spatial variability of rainfa...
متن کاملRainfall attenuation over terrestrial microwave link operating at 19
Rain induced attenuation at 19.4 & 28.75 GHz over a terrestrial path link of 2.29 km was measured for the period of one year in Amritsar (31 36 N 74 52E) environment. An empirical model for predicting rain-induced attenuation on terrestrial path link is proposed. Measured prediction has been compared with the recently prediction method proposed by the International Telecommunication union (ITU-...
متن کاملRainfall Intensity Estimation by Ground-Based Dual-Frequency Microwave Radiometers
Many investigators have used satellite data to derive rainfall intensity and to compare them with rain gauge data. However, there has always been a problem: what is the optimal time period for the two different types of data? A set of well-controlled data collected by ground-based dual-frequency microwave radiometers at the National Central University (24.98N, 121.18E) in Taiwan between January...
متن کاملRainfall estimation using spaceborne microwave radar and radiometric measurements
The present paper deals with some of the recent remote sensing techniques for the estimation of rainfall, mainly from passive and active microwave measurements from space. The sensitivity analysis based on forward approach following the radiative transfer modelling using data from ECMWF and mesoscale models is presented. The inverse methods of retrieving rainfall from satellite microwave measur...
متن کاملPath-averaged rainfall estimation using microwave links: Uncertainty due to spatial rainfall variability
[1] Microwave links can be used to estimate the pathaveraged rain rate along the link when precipitation occurs. They take advantage of the near proportionality between the specific attenuation affecting the link signal and the rain rate. This paper deals with the influence of the spatial variability of rainfall along the link on the accuracy of the rainfall estimates. We focus on single-polari...
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ژورنال
عنوان ژورنال: Journal of Atmospheric and Oceanic Technology
سال: 2005
ISSN: 1520-0426,0739-0572
DOI: 10.1175/jtech1732.1