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Characterizing Ice Cloud Particle Sh...

Hioki, Souichiro.

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Characterizing Ice Cloud Particle Shape and Surface Roughness from Polarimetric Satellite Observations.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Characterizing Ice Cloud Particle Shape and Surface Roughness from Polarimetric Satellite Observations./
作者:	Hioki, Souichiro.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2018,
面頁冊數:	202 p.
附註:	Source: Dissertations Abstracts International, Volume: 80-09, Section: B.
Contained By:	Dissertations Abstracts International80-09B.
標題:	Atmospheric sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13840005
ISBN:	9780438881792

Characterizing Ice Cloud Particle Shape and Surface Roughness from Polarimetric Satellite Observations.
Hioki, Souichiro.

Characterizing Ice Cloud Particle Shape and Surface Roughness from Polarimetric Satellite Observations. - Ann Arbor : ProQuest Dissertations & Theses, 2018 - 202 p.

Source: Dissertations Abstracts International, Volume: 80-09, Section: B.

Thesis (Ph.D.)--Texas A&M University, 2018.

This item must not be sold to any third party vendors.

The single scattering properties of ice cloud particles are inferred from spaceborne multi-angle satellite sensors with two newly developed noise-resilient retrieval techniques. The first presented method parameterizes the phase function and phase matrix elements by a few parameters to implement the maximum likelihood estimation in the retrieval system. The second method retrieves the renormalized phase function as a difference from a known phase function. The effect of noise is more predictable for both methods than the conventional "best-fit" method, which selects the best-fitting shape and surface roughness from a predetermined particle set. The first method is applied to the data from the Polarization and Directionality of the Earth's Reflectance (POLDER) sensor. The retrieval results indicate that long column shape (ratio of basal face diameter to prism height greater than 9) with surface roughness parameter between 0.1 and 0.5 represents the extratropical observations well. Weak temperature dependence of the surface roughness is found in the extratropical data stratified by the cloud top temperature. The tropical retrieval was not successful, and the second method is applied to the Multi-angle Imaging Spectroradiometer (MISR) data. Short hexagonal column particles or their aggregates are found to match with estimated renormalized phase function. In addition to these results, the surface roughness simulation is summarized and the derivation of the δ-fit truncation technique for polarimetric radiative transfer is included.

ISBN: 9780438881792Subjects--Topical Terms:

3168354
Atmospheric sciences.

Characterizing Ice Cloud Particle Shape and Surface Roughness from Polarimetric Satellite Observations.
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300 $a 202 p.
500 $a Source: Dissertations Abstracts International, Volume: 80-09, Section: B.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Yang, Ping.
502 $a Thesis (Ph.D.)--Texas A&M University, 2018.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a The single scattering properties of ice cloud particles are inferred from spaceborne multi-angle satellite sensors with two newly developed noise-resilient retrieval techniques. The first presented method parameterizes the phase function and phase matrix elements by a few parameters to implement the maximum likelihood estimation in the retrieval system. The second method retrieves the renormalized phase function as a difference from a known phase function. The effect of noise is more predictable for both methods than the conventional "best-fit" method, which selects the best-fitting shape and surface roughness from a predetermined particle set. The first method is applied to the data from the Polarization and Directionality of the Earth's Reflectance (POLDER) sensor. The retrieval results indicate that long column shape (ratio of basal face diameter to prism height greater than 9) with surface roughness parameter between 0.1 and 0.5 represents the extratropical observations well. Weak temperature dependence of the surface roughness is found in the extratropical data stratified by the cloud top temperature. The tropical retrieval was not successful, and the second method is applied to the Multi-angle Imaging Spectroradiometer (MISR) data. Short hexagonal column particles or their aggregates are found to match with estimated renormalized phase function. In addition to these results, the surface roughness simulation is summarized and the derivation of the δ-fit truncation technique for polarimetric radiative transfer is included.
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