Results 11 to 20 of about 1,083 (181)

Forecast indices from a ground-based microwave radiometer for operational meteorology [PDF]

Atmospheric Measurement Techniques, 2015
Today, commercial microwave radiometer profilers (MWRPs) are robust and unattended instruments providing real-time, accurate atmospheric observations at ~ 1 min temporal resolution under nearly all weather conditions.
D. Cimini, M. Nelson, J. Güldner, R. Ware   +3 more
doaj   +6 more sources

Ground-Based Microwave Radiometer Calibration: an Overview

Journal of Aerospace Technology and Management, 2018
This paper intends to briefly present some basic concepts on the microwave radiometry and radiometer calibration research in remote sensing applications and demonstrate results and analysis of the cryogenic calibration of a microwave ground-based ...
Marcelo Miacci, Carlos Frederico Angelis
doaj   +4 more sources

GROMOS-C, a novel ground-based microwave radiometer for ozone measurement campaigns [PDF]

Atmospheric Measurement Techniques, 2015
Stratospheric ozone is of major interest as it absorbs most harmful UV radiation from the sun, allowing life on Earth. Ground-based microwave remote sensing is the only method that allows for the measurement of ozone profiles up to the mesopause, over 24
S. Fernandez, A. Murk, N. Kämpfer
doaj   +6 more sources

Investigation of ground-based microwave radiometer calibration techniques at 530 hPa [PDF]

Atmospheric Measurement Techniques, 2013
Ground-based microwave radiometers (MWR) are becoming more and more common for remotely sensing the atmospheric temperature and humidity profile as well as path-integrated cloud liquid water content.
G. Maschwitz, U. Löhnert, S. Crewell, T. Rose, D. D. Turner   +4 more
doaj   +5 more sources

Estimation of nighttime aerosol optical depths using the ground-based microwave radiometer [PDF]

Atmospheric Measurement Techniques
Aerosol optical depth (AOD) is a crucial parameter for understanding the impact of aerosols on Earth's atmosphere and air quality. Nevertheless, most existing remote sensing techniques rely on the shortwave spectrum, precluding nighttime measurements ...
G. Liu, J. Li, S. Yue, L. Zhang, C. Zhang   +4 more
doaj   +4 more sources

An Improved One-Dimensional Variational Method for a Ground-Based Microwave Radiometer

Atmosphere
Temperature and water vapor density profiles in the troposphere (from the surface to 10 km) can be retrieved from a ground-based microwave radiometer (MWR) at high temporal and moderate vertical resolution.
Hualong Yan, Di Zhou, Renxin Ji, Rongmei Geng   +3 more
doaj   +2 more sources

Calibrating ground‐based microwave radiometers: Uncertainty and drifts [PDF]

Radio Science, 2016
AbstractThe quality of microwave radiometer (MWR) calibrations, including both the absolute radiometric accuracy and the spectral consistency, determines the accuracy of geophysical retrievals. The Microwave Radiometer Calibration Experiment (MiRaCalE) was conducted to evaluate the performance of MWR calibration techniques, especially of the so‐called ...
Küchler, N., Turner, D. D., Löhnert, U., Crewell, S.   +3 more
openaire   +2 more sources

Snow scattering signals in ground‐based passive microwave radiometer measurements [PDF]

Journal of Geophysical Research: Atmospheres, 2010
This paper investigates the influence of snow microphysical parameters on the enhancement of ground‐based passive microwave brightness temperature (TB) measurements. In addition to multispectral passive microwave observations between 20 and 150 GHz, a 35 GHz cloud radar and a 2‐D video disdrometer for in situ measurements of snowfall were deployed as ...
Kneifel S., Lohnert U., Battaglia A., Crewell S., Siebler D.   +4 more
openaire   +4 more sources

Microwave Radiometer for Cloud Carthography: A 22‐channel ground‐based microwave radiometer for atmospheric research [PDF]

Radio Science, 2001
A 22‐channel Microwave Radiometer for Cloud Carthography (MICCY) for the profiling of tropospheric temperature, humidity, and cloud liquid water has been developed. The radiometer has 10 channels along the high‐frequency wing of the 22.235 GHz water vapor line, 10 channels along the low‐frequency side of the 60 GHz oxygen complex, and 2 channels at 90 ...
Susanne Crewell, Harald Czekala, Ulrich Löhnert, Clemens Simmer, Thomas Rose, Ralf Zimmermann, Rüdiger Zimmermann   +6 more
openaire   +1 more source

Zeeman effect in atmospheric O₂ measured by ground-based microwave radiometry [PDF]

Atmospheric Measurement Techniques, 2015
In this work we study the Zeeman effect on stratospheric O2 using ground-based microwave radiometer measurements. The interaction of the Earth magnetic field with the oxygen dipole leads to a splitting of O2 energy states, which polarizes the emission ...
F. Navas-Guzmán, N. Kämpfer, A. Murk, R. Larsson, S. A. Buehler, P. Eriksson   +5 more
doaj   +1 more source