Results 251 to 260 of about 95,351 (282)

In situ observations of snow particle size distributions over a cold frontal rainband within an extratropical cyclone

Asia-Pacific Journal of Atmospheric Sciences, 2016
Cloud microphysical properties of a mixed phase cloud generated by a typical extratropical cyclone in the Tongliao area, Inner Mongolia on 3 May 2014, are analyzed primarily using in situ flight observation data. This study is mainly focused on ice crystal concentration, supercooled cloud water content, and vertical distributions of fit parameters of ...
Jiefan Yang, Hengchi Lei
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Measurement of snow particle size and speed in powder snow avalanches

2015
Generally snow avalanches consist a dense-flow layer at the bottom and a powder snow cloud on top. Snow particle size and speed are key parameters to describe the turbulent condition in the powder cloud, however, the information on the particles were not well investigated. In this study, we observed powder snow avalanches using a snow particle counter (
Ito, Y., Nishimura, K., Naaim-Bouvet, F., Bellot, H., Thibert, Emmanuel, Ravanat, X., Fontaine, Firmin   +6 more
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Snow particle sizes and their distributions in Dronning Maud Land, Antarctica, at sample, local and regional scales

Antarctic Science, 2016
AbstractIn this study, snow particle size variability was investigated along a transect in Dronning Maud Land from the coast to the polar plateau. The aim of the study was to better understand the spatial and temporal variations in surface snow properties.
Susanne Ingvander, Peter Jansson, Ian A. Brown, Shuji Fujita, Shin Sugyama, Sylviane Surdyk, Hiroyuki Enomoto, Margareta Hansson, Per Holmlund   +8 more
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Scattering by densely packed sticky particles with size distributions and applications to microwave emission and scattering from snow

IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2004
The snow medium is treated as densely packed sticky ice particles following a size distribution. We apply the quasicrystalline approximation (QCA) dense medium theory to calculate the absorption, scattering and emission of snow at multiple frequencies.
null Leung Tsang, null Kung-Hau Ding, A.T.C. Chang   +2 more
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Measurements of blowing snow, Part I: Particle shape, size distribution, velocity, and number flux at Churchill, Manitoba, Canada

Cold Regions Science and Technology, 2009
Abstract Blowing snow is a frequent and significant winter weather event, and there is currently a need for more observations and measurements of blowing snow, especially in arctic and subarctic environments. This is the first paper in a two part series studying blowing snow in Churchill, Manitoba, and Franklin Bay, NWT. In this part, the development
Mark Gordon, Peter A. Taylor
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Measurements of blowing snow: size distribution of snow particles at Lac blanc pass, French Alps

2011
Wind-transported snow is a common phenomenon in French Alps, creating snowdrifts and contributing significantly to the loading of avalanche release areas. Some studies have already been conducted to address the size distribution of snow particles at a given height (Budd (1966), Schmidt (1982), Nishimura and Nemoto (2005), Gordon and Taylor (2009 ...
Naaim-Bouvet, F., Bellot, H., Naaim, Mohamed, Nishimura, K., Gaucher, R.   +4 more
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Particle size distribution, chemical composition and meteorological factor analysis: A case study during wintertime snow cover in Zhengzhou, China

Atmospheric Research, 2018
There was a significant snowfall event in North China from November 23 to 25 in 2015. Considering that most of the bare surface and road dust were covered by snow, the effect of dust and soil could be ignored. Atmospheric particle samples were collected in Zhengzhou, China during a haze event from November 28 to December 4, 2015.
Fei Yu, Qun Wang, Qishe Yan, Nan Jiang, Junhua Wei, Zhiyuan Wei, Shasha Yin   +6 more
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Time-elapsed evolution of aerosol size distributions by snow particles after the passage of blizzards over the Maitri (Antarctica)

International Journal of Remote Sensing, 2011
Measurements of the aerosol size distribution in the diameter range 0.003–20 μm were made by a scanning mobility particle sizer SMPS and an aerodynamic particle sizer APS at Maitri 70° 45′ 52′′ S, 11° 44′ 03′′ E, Antarctica during the 24th Indian Antarctic Expedition, which took place in January and February 2005. Time-elapsed evolutions of the aerosol
Devendraa Siingh, D. M. Chate, Kaushar Ali   +2 more
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SPH numerical simulation of snow drift movement with complex particle size

Computational Particle Mechanics, 2023
Afang Jin, Shuzhi Zhang, Zhenguo An, Hao Peng   +3 more
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NEW METHOD FOR THE SIMULTANEOUS OBSERVATION OF SHAPE AND SIZE OF A LARGE NUMBER OF FALLING SNOW PARTICLES

Journal of Meteorology, 1956
Abstract A simple method has been devised for taking shadow photographs of snow crystals, or of their melt water, without use of a lens. It permits study of the form, size, and mass characteristics at intervals of several minutes during a snowfall. As an application of the method, the coalescence of crystals was studied.
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