On Ice-Crystal Nuclei and Other Substances Found in Snow Crystals

Isono, K.

doi:10.1175/1520-0469(1955)012<0456:oicnao>2.0.co;2

Cited by 54 publications

(34 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It may be, therefore, reasonable to consider that most of these solid particles are soil particles originated from the arid or semi-arid regions of North China and Mongolia. These regions coincide with the source regions of ice nuclei in the air over Japan, especially in the case of snowfalls on the coast of the Japan Sea in winter, as pointed out by Isono and Isono et al (Isono, 1955;Isono, Komabayasi and Ono, 1959;Isono et al, 1966;Isono et al, 1971), based on the results of examination of centre nuclei of snow crystals with an electron microscope, ice nucleus counts and laboratory experiments on loess particles from North China. Among the mineral particles contained in the snow sample, there are those which are very effective as ice nuclei, as shown in Table 4.…”

Section: Discussionsupporting

confidence: 73%

“…On the other hand, natural ice nuclei contained in snow crystals and ice crystals have been investigated in detail by many researchers. Direct examinations of centre nuclei of snow crystals with the electron microscope (Kumai, 1951(Kumai, , 1961Isono, 1955;Kumai and Francis, 1962;Isono et al, 1971) and of centre nuclei of ice crystals produced in outdoor air which was introduced into the cold chamber (Rucklidge, 1965;Byers, 1965) have indicated that the materials of ice nuclei are chiefly mineral particles and the source region of ice nuclei is the land. Isono et al (Isono et al, 1959a(Isono et al, , 1959bIsono and Ikebe, 1960) observed concentrations of ice nuclei with an ice nucleus counter and determined the ice-forming properties of volcanic ash and soil particles, and they concluded that the principal active ice nuclei in the atmosphere are some kinds of soil particles blown up from arid regions and volcanic dust from active volcanoes.…”

Section: Introductionsupporting

confidence: 63%

See 1 more Smart Citation

On Materials of Solid Particles Contained in Snow and Rain Water: Part 1

Ishizaka

1972

Journal of the Meteorological Society of Japan

View full text Add to dashboard Cite

Snow and rain water samples were collected at a site on the coast of the Hokuriku district in February and March 1970 and rain water samples were collected at a site on Mt. Odaigahara in July 1970. Solid particles contained in snow and rain water samples were analyzed by means of X-ray, infrared and electron optical methods. The results are summarized as follows: (1) Most of the solid particles in snow sample were found to be soil particles originated from the arid or semi-arid regions of North China and Mongolia; these soil particles are considered to play an important role as ice nuclei in the formation of snow crystals in the season of north west monsoon. (2) At both sites, rain water samples precipitated from the air mass which did not pass through the arid or semi-arid regions of the continent of Asia and stayed over the ocean for a long time contained a small quantity of solid particles. (3) Rain water samples collected from rainfall due to Typhoon 7002 contained a very small quantity of solid particles. Their materials were identified as *-quartz, *-cristobalite, pyroxene and unidentified mineral. It is suggested that these particles were of volcanic and other origins and suspended in the upper troposphere or the stratosphere.

show abstract

Section: Discussionsupporting

confidence: 73%

Section: Introductionsupporting

confidence: 63%

On Materials of Solid Particles Contained in Snow and Rain Water: Part 1

Ishizaka

1972

Journal of the Meteorological Society of Japan

View full text Add to dashboard Cite

show abstract

“…Experimental studies on materials which might be serving as natural ice nuclei have been made by several investigators (Schultz 1948, Pruppacher and Sanger 1955, Hama and Itoo 1956. Direct examinations of centre nuclei of snow crystals with electron microscope were made by Kumai (1951) and Isono (1955). Isono suggested that clay-silicate minerals such as kaolinite, montmorillonite and volcanic ashes might be the main ice nuclei in the atmosphere and that montmorillonite might act as freezing nuclei after adsorption of vapor and formation of cloud droplet on it.…”

Section: Introductionmentioning

confidence: 99%

On the Ice-nucleating Ability of Rock-forming Minerals and Soil Particles&lowast

Isono

Ikebe

1960

Journal of the Meteorological Society of Japan

Self Cite

View full text Add to dashboard Cite

The ice-nucleating abilities of various rock-forming minerals which exist commonly on the surface of the earth were determined in laboratory.The most effective minerals as ice nuclei among the minerals tested are magnetite, hypersthene, kaolinite and sanidine.Quartz, amphibole, olivine, calcite and orthoclase are found to be less effective.As for the volcanic ejecta, the degree of weathering to which they have been subjected seems to give significant effect on their ice-nucleating abilities. The temperature spectra of atmospheric ice nuclei observed in Tokyo were compared with those of materials which were considered to have arrived in the air over Tokyo, and fair agreements were seen between them.It is suspected that meteoritic dust particles which contain magnetite or minerals similar to it might act as effective ice nuclei.

show abstract

“…Dust particles can also act as efficient ice nuclei both on Earth and Mars, thereby impacting cloud formation and cloud-climate feedback (e.g. Isono 1955;DeMott et al 2003;Boucher et al 2013). In the terrestrial environment, dust transport has further effects on ecosystems due to the transport of nutrients, minerals, and carbon, potentially acting as fertilizers (e.g.…”

mentioning

confidence: 99%

Dust Devil Sediment Transport: From Lab to Field to Global Impact

et al. 2016

View full text Add to dashboard Cite

The impact of dust aerosols on the climate and environment of Earth and Mars is complex and forms a major area of research. A difficulty arises in estimating the contribution of small-scale dust devils to the total dust aerosol. This difficulty is due to uncertainties in the amount of dust lifted by individual dust devils, the frequency of dust devil occurrence, and the lack of statistical generality of individual experiments and observations. In this paper, we review results of observational, laboratory, and modeling studies and provide an overview of dust devil dust transport on various spatio-temporal scales as obtained with the different research approaches. Methods used for the investigation of dust devils on Earth and Mars vary. For example, while the use of imagery for the investigation of dust devil occurrence frequency is common practice for Mars, this is less so the case for Earth. Modeling approaches for Earth and Mars are similar in that they are based on the same underlying

show abstract

On Ice-Crystal Nuclei and Other Substances Found in Snow Crystals

Cited by 54 publications

References 0 publications

On Materials of Solid Particles Contained in Snow and Rain Water: Part 1

On Materials of Solid Particles Contained in Snow and Rain Water: Part 1

On the Ice-nucleating Ability of Rock-forming Minerals and Soil Particles&lowast

Dust Devil Sediment Transport: From Lab to Field to Global Impact

Contact Info

Product

Resources

About