Maria P. Cadeddu

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The two-channels microwave water vapor radiometer (MWR) shown in Fig. 1 measures brightness temperatures at the microwave frequencies of 23.8 and 31.4 GHz. Brightness temperatures are converted to opacity and used to retrieve PWV and LWP by means of a linear statistical regression. Root mean square error of retrieval is 0.4 mm for PWV and 0.02 mm (20 g/m 2)(More)
—Accurate retrievals of liquid water path (LWP) from passive microwave radiometers rely on the use of radiative transfer models to describe the absorption of radiation by various atmospheric components. When clouds are present, atmospheric absorption is affected by the dielectric properties of liquid water. In this paper, we use measurements from four(More)
—Ground-based observations from two different ra-diometers are used to evaluate commonly used microwave/ millimeter-wave propagation models at 150 GHz. This frequency has strong sensitivity to changes in precipitable water vapor (PWV) and cloud liquid water. The observations were collected near Hesselbach, Germany, as part of the Atmospheric Radiation(More)
millimeter-wave radiometers were operated at the Atmospheric Radiation Measurement Program's site in Barrow, Alaska. These radiometers contain several channels located around the strong 183.31-GHz water vapor line, which is crucial for ground-based water-vapor measurements in very dry conditions, typical of the Arctic. Simultaneous radiosonde observations(More)
—The Atmospheric Radiation Measurement (ARM) Program maintains a suite of instruments in various locations to provide continuous monitoring of atmospheric parameters. Temperature and humidity retrievals are two of the key parameters used by the climate-modeling community. Accuracy in the spectroscopy adopted by the various radiative transfer models is(More)
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