Results 231 to 240 of about 30,171 (292)
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pure and applied geophysics, 1966
An inexpensive and simple form of radiometer capable of attachment to the American Bureau of Standards type radiosonde is described: it measures the upward flux of longwave radiation when used on night ascents. A slight modification to the telemetry circuit of the standard radiosonde enables the radiation signals to be obtained in addition to the usual
J. P. Funk, E. L. Deacon, B. G. Collins
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An inexpensive and simple form of radiometer capable of attachment to the American Bureau of Standards type radiosonde is described: it measures the upward flux of longwave radiation when used on night ascents. A slight modification to the telemetry circuit of the standard radiosonde enables the radiation signals to be obtained in addition to the usual
J. P. Funk, E. L. Deacon, B. G. Collins
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Weatherwise, 2013
The radiosonde, a meteorological instrument that is carried aloft by weather balloons to transmit data on atmospheric conditions, represents the fusion of man's ingenuity and inquisitiveness about ...
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The radiosonde, a meteorological instrument that is carried aloft by weather balloons to transmit data on atmospheric conditions, represents the fusion of man's ingenuity and inquisitiveness about ...
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Environmental Pollution, 2018
Most cities in China experience frequent PM2.5 pollution, in relation to unfavorable planetary boundary layer (PBL) conditions. Partly due to the limited appropriate PBL observations, the explicit relationships between PBL structure/process and PM2.5 ...
Y. Miao +5 more
semanticscholar +1 more source
Most cities in China experience frequent PM2.5 pollution, in relation to unfavorable planetary boundary layer (PBL) conditions. Partly due to the limited appropriate PBL observations, the explicit relationships between PBL structure/process and PM2.5 ...
Y. Miao +5 more
semanticscholar +1 more source
The radiosonde: The stratosphere laboratory
Journal of the Franklin Institute, 1941Abstract The radiosonde, the most recently developed tool for use in the investigation of phenomena in the upper atmosphere, is described. The various merits and disadvantages of the three systems now in use for the transmission of physical data from the stratosphere are reviewed.In a discussion of present-day radiosonde technique are included ...
E.T. Clarke, S.A. Korff
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Journal of Geophysical Research: Atmospheres, 2019
The accuracy of the Atmospheric Infrared Sounder (AIRS) water vapor product in China is as yet unknown due to the lack of collocated in situ sounding observations.
Zhaoliang Zeng +9 more
semanticscholar +1 more source
The accuracy of the Atmospheric Infrared Sounder (AIRS) water vapor product in China is as yet unknown due to the lack of collocated in situ sounding observations.
Zhaoliang Zeng +9 more
semanticscholar +1 more source
Calibration of a radiosonde humidity sensor at low temperature and low pressure
Metrologia, 2019Relative humidity in upper air is frequently measured using radiosondes at an altitude of up to roughly 35 km. In this study, the calibration of a radiosonde humidity sensor was demonstrated using a humidity generator that can mimic the humidity ...
Sang‐Wook Lee +4 more
semanticscholar +1 more source
The “Chirp” Digital Radiosonde
Journal of Applied Meteorology, 1967Abstract This paper reports on a digital measurement (“chirp”) system which has application for a wide range of meteorological and earth satellite measurements. The system employs a simple concept in which a voltage pulse, proportional to a sensor voltage, is used to generate a burst of pulses from a voltage controlled oscillator (VCO).
Verner E. Suomi +2 more
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Position measurements with radiosondes
IEEE Journal of Oceanic Engineering, 1989The use of Omega sondes, designed for the determination of upper air wind vectors, for relative position measurements on the ground is described. The technique shows promise in measuring the deformation of sea ice, the motion of oceanic surface water, and the trajectories of constant-level balloons.
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MTT-S International Microwave Symposium Digest, 2005
Two SAW stabilized oscillators with FM and PAM capability have recently been designed and breadboarded to provide 300 ppm frequency stability over a -70/spl deg/ C to +70/spl deg/C environment. The circuits are being developed for use in low cost, expendable radiosondes operating at 403 MHz and 1680 MHz.
D.J. Dodson +3 more
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Two SAW stabilized oscillators with FM and PAM capability have recently been designed and breadboarded to provide 300 ppm frequency stability over a -70/spl deg/ C to +70/spl deg/C environment. The circuits are being developed for use in low cost, expendable radiosondes operating at 403 MHz and 1680 MHz.
D.J. Dodson +3 more
openaire +1 more source