scholarly journals Millimeter-wave Radiometer for High Sensitivity Water Vapor Profiling in Arid Regions

2006 ◽  
Author(s):  
Andrew Pazmany
Keyword(s):  
Water Vapor ◽  
Millimeter Wave ◽  
Arid Regions ◽  
High Sensitivity ◽  
Millimeter Wave Radiometer

Validation of total water vapor retrieval with an airborne millimeter wave radiometer over Arctic sea ice

Radio Science ◽  
2003 ◽  
Vol 38 (4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Nathalie Selbach ◽  
Tim J. Hewison ◽  
Georg Heygster ◽  
Jungang Miao ◽  
Andrew J. McGrath ◽  
...  
Keyword(s):  
Water Vapor ◽  
Sea Ice ◽  
Millimeter Wave ◽  
Arctic Sea Ice ◽  
Total Water ◽  
Arctic Sea ◽  
Millimeter Wave Radiometer

Millimeter wave radiometer installation in Río Gallegos, southern Argentina

2011 ◽  
Author(s):  
P. F. Orte ◽  
J. Salvador ◽  
E. Wolfram ◽  
R. D'Elia ◽  
T. Nagahama ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Millimeter Wave Radiometer

scholarly journals Characterization and mitigation of water vapor effects in the measurement of ozone by chemiluminescence with nitric oxide

2013 ◽  
Vol 6 (5) ◽  
pp. 9263-9295
Author(s):  
P. Boylan ◽  
D. Helmig ◽  
J.-H. Park
Keyword(s):  
Nitric Oxide ◽  
Water Vapor ◽  
Mole Fraction ◽  
Laboratory Experiments ◽  
High Sensitivity ◽  
Fast Response ◽  
Atmospheric Ozone ◽  
Permeable Membrane ◽  
Signal Correction ◽  
High Sensitivity Detection

Abstract. Laboratory experiments were conducted to investigate the effects of water vapor on the reaction of nitric oxide with ozone in a chemiluminescence instrument used for fast response and high sensitivity detection of atmospheric ozone. Water vapor was introduced into a constant level ozone standard and both ozone and water vapor signals were recorded at 10 Hz. The presence of water vapor was found to reduce, i.e. quench the ozone signal. A correction factor was determined to be 4.15 ± 0.14 × 10−3, which corresponds to a 4.15% increase in the measured ozone signal per 10 mmol mol−1 co-sampled water vapor. An ozone-inert water vapor permeable membrane (Nafion dryer) was installed in the sampling line and was shown to remove the bulk of the water vapor mole fraction in the sample air. At water vapor mole fractions above 25 mmol mol−1, the Nafion dryer removed over 75% of the water vapor in the sample. This reduced the ozone signal correction from over 11% to less than 2.5%. The Nafion dryer was highly effective at reducing the fast fluctuations of the water vapor signal (more than 97%) while leaving the ozone signal unaffected, which is a crucial improvement for minimizing the interference of water vapor fluxes on the ozone flux determination by the eddy covariance technique.

Supermagnetic cellulose nanocrystal hybrids reinforced PHBV nanocomposites with high sensitivity to intelligently detect water vapor

2020 ◽  
Vol 154 ◽  
pp. 112704 ◽  
Author(s):  
Somia Yassin Hussain Abdalkarim ◽  
Yanyan Wang ◽  
Hou-Yong Yu ◽  
Zhaofeng Ouyang ◽  
Rabie A.M. Asad ◽  
...  
Keyword(s):  
Water Vapor ◽  
High Sensitivity ◽  
Cellulose Nanocrystal

Millimeter wave broadband high sensitivity detectors with zero-bias Schottky diodes

2015 ◽  
Vol 36 (6) ◽  
pp. 065002 ◽  
Author(s):  
Changfei Yao ◽  
Ming Zhou ◽  
Yunsheng Luo ◽  
Conghai Xu
Keyword(s):  
Millimeter Wave ◽  
Schottky Diodes ◽  
High Sensitivity ◽  
Zero Bias
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