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Stereological determination of dry-snow parameters for discrete-scatterer microwave modeling

  • Jiancheng Shi (a1), Robert E. Davis (a2) and Jeff Dozier (a3)

Abstract

Modeling microwave back-scattering and emission from snow-packs requires the knowledge of snowpack characteristics and their dynamics to select an appropriate model. Both theory and field data show that microwave back-scattering coefficients and brightness temperatures are sensitive to parameters describing snow-microstructure. Stereological methods and other techniques can be applied to images of sections cut from undisturbed snow, and are used to obtain accurate and unbiased estimates of snow-microstructure parameters for discrete scatterer modeling. Assuming that the ice particle-size distribution can be characterized as a log-normal distribution function, we show that the parameters describing the distribution can be obtained from section images. The results show that, in addition to snow density and ice-particle size, the particle-size variation has great effect on dry-snow extinction properties. The optically equivalent ice-particle size for Rayleigh scattering in a snowpack with grain-size variations can be determined from the stereological measurements from snow sections.

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References

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Colbeck, S.C. 1986 Statistics of coarsening in water℃saturated snow Acta Metall. 34 347352.
Davis, R.E. Dozier, J. Chang, A.T.C. 1987 Snow property measurements correlative to microwave emission at 35 GHz IEEE Trans. Geosci. Remote Sensing, GE℃25(6), 751757.
DeHoff, R.T. 1965 The estimation of particle size distribution from simple counting measurements made on random plane sections Trans. AIME 233, 975.
Ding, K.H. Tsang, L. 1988 Effective propagation constants of dense nontenuous media with multi℃species of particles Journal of Electromagnetic Waves and Applications 2 757777.
Dozier, J. 1989 Remote sensing of snow in visible and near℃infrared wavelengths In Asrar G., ed. Theory and applications of optical remote sensing. New York, John Wiley, 527547.
Hüppe, R. 1986 S℃ and X℃band signature measurements of snow In Mätzler C., ed. Proceedings of a Workshop on Microwave Signatures of Arctic Sea Ice Under Summer Melt Conditions. Bern, European Association of Remote Sensing Laboratory, 7081.
Kinosita, S. Wakahama, G. 1960 Thin sections of deposited snow made by the use of aniline Contrib. Inst. Low Temp. Sci., Ser. A, 15, 3545.
Koh, G. 1984 Snow Symposium IV Approach to snow propagation modeling. CRREL Spec. Rep. 8435 247258.
Tsang, L. 1992 Dense media radiative transfer theory for dense discrete random media with particles of multiple sizes and permittivities In Prion, Α., ed. PIER 6. Progress in Electromagnetic Research. New York, Elsevier 181225.
Underwood, E.E. 1970 Quantitative stereology. Menlo Park, CA, Addison℃Wesley Publishing Company.

Stereological determination of dry-snow parameters for discrete-scatterer microwave modeling

  • Jiancheng Shi (a1), Robert E. Davis (a2) and Jeff Dozier (a3)

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