An evaluation method of snow particle size distribution functions from VTR image for meteorological radar observations

Hatanaka, Masahiko; Ohta, Youhei; Takeya, H.; Sugioka, Ichiro; Nishitsuji, Akira; Wada, Makoto

doi:10.1109/igarss.1993.322381

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“…[24] A possible cause of winter and transitional-seasons excesses might be the existence of ice fraction of clouds with predominant sizes 0.5 to 2.5 millimeter of ice or snow particles (that often occur in nature which follows from the data of in situ measurements contained, e.g., in the work of Hatanaka et al [1993]). …”

Section: Resultsmentioning

confidence: 99%

Peculiarities of vertical atmosphere absorption in the millimeter wave band

Руженцев

2003

Radio Science

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[1] One complete year of continuous observations of vertical radiation of the atmosphere in two points of millimeter wave band (94 and 38 GHz) was conducted. The total vertical absorption, liquid and vapor water content of atmosphere, and average (effective) temperature of clouds are restored on the basis of these two-frequency radiometric data. Numerous cases of abnormal differences between experimental and theoretical values of cloud absorption at the two frequencies were observed. An analysis of the collection of direct and indirect features that accompany the abnormal events is carried out. It is shown that the main sources of observed abnormal differences between theoretical and experimental data are snow and ice particles in clouds and, probably, water droplets of large size. The possibility of using two-frequency radiometric data not only for retrieving of liquid and vapor water content of atmosphere but also for determining the effective temperature of clouds and for assessing hydrometeor microstructure is noted. For this purpose, polarization measurements are very useful.

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Section: Resultsmentioning

confidence: 99%

Peculiarities of vertical atmosphere absorption in the millimeter wave band

Руженцев

2003

Radio Science

View full text Add to dashboard Cite

show abstract

An evaluation method of snow particle size distribution functions from VTR image for meteorological radar observations

Cited by 1 publication

References 0 publications

Peculiarities of vertical atmosphere absorption in the millimeter wave band

Peculiarities of vertical atmosphere absorption in the millimeter wave band

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