Evaluation of stereology for snow microstructure measurement and microwave emission modeling:a case study

作     者：Jinmei Pan M.T.Durand Z.Courville B.J.Vander Jagt N.P.Molotch S.A.Margulis E.J.Kim M.Schneebeli C.Mätzler 

作者机构：State Key Laboratory of Remote Sensing ScienceAerospace Information Research InstituteChinese Academy of SciencesBeijingPeople’s Republic of China School of Earth Science and Byrd Polar Research CenterThe Ohio State UniversityColumbusOHUSA US Army Corps of Engineers Cold Regions Research and Engineering LaboratoryHanoverNHUSA Geography Department and Institute of Arctic and Alpine ResearchUniversity of ColoradoBoulderCOUSA Department of Civil and Environmental EngineeringUniversity of CaliforniaLos AngelesCAUSA Hydrospheric and Biospheric Sciences LaboratoryNASA Goddard Space Flight CenterGreenbeltMDUSA WSL Institute for Snow and Avalanche Research SLFDavos DorfSwitzerland Institute of Applied Physics and Oeschger Centre for Climate Change ResearchUniversity of BernBernSwitzerland 

出 版 物：《International Journal of Digital Earth》 (国际数字地球学报（英文）)

年 卷 期：2021年第14卷第10期

页      面：1316-1336页

核心收录：

学科分类：08[工学] 0708[理学-地球物理学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0835[工学-软件工程] 0704[理学-天文学] 0811[工学-控制科学与工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by NASA Terrestrial Hydrology Program[grant number NNX09AM10G] Strategic Priority Research Program of Chinese Academy of Sciences[grant number XDA20100300] 

主　　题：Microwave radiometry snow stereology snow microstructure MEMLS 

摘      要：Reliablemicrostructuremeasurement of snow is a requirement for microwave radiative transfer model *** specific surface area(SSA)can be measured using stereological methods,in which snow samples are cast in the field and photographed in the *** stereology photographs manually by counting intersections of test cycloids with air-ice boundaries reduces the problems in binary *** paper is a case study to evaluate the repeatability of the manually stereology interpretation by two independent research *** further assessed how uncertainty in snow SSA influences simulated brightness temperature(TB)driven by the Microwave Emission Model of Layered Snowpacks(MEMLS),and how stereology compares to Near Infrared(NIR)camera and hand *** was obtained from two alpine snow profiles from Steamboat Springs,*** showed that stereological SSA values measured by two groups are highly consistent,and the ground radiometer measured T_(B)at 19 and 37 GHz was successfully predicted(RMSE3.8 K);simulations using NIR SSA and hand-lens geometric grain size(Dg)measurements have larger *** conclusion was not sensitive to uncertainty in the free parameters of TB modeling.