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Arctic Snow Microstructure Experiment for the development of snow emission modelling [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems, 2016
The Arctic Snow Microstructure Experiment (ASMEx) took place in Sodankylä, Finland in the winters of 2013–2014 and 2014–2015. Radiometric, macro-, and microstructure measurements were made under different experimental conditions of homogenous
W. Maslanka   +9 more
doaj   +10 more sources

Experimental and model-based investigation of the links between snow bidirectional reflectance and snow microstructure [PDF]

open access: yesThe Cryosphere, 2021
Snow stands out from materials at the Earth’s surface owing to its unique optical properties. Snow optical properties are sensitive to the snow microstructure, triggering potent climate feedbacks.
M. Dumont   +10 more
doaj   +7 more sources

A general treatment of snow microstructure exemplified by an improved relation for thermal conductivity [PDF]

open access: yesThe Cryosphere, 2013
Finding relevant microstructural parameters beyond density is a longstanding problem which hinders the formulation of accurate parameterizations of physical properties of snow.
H. Löwe, F. Riche, M. Schneebeli
doaj   +4 more sources

Evaluation of the Effective Microstructure Parameter of the Microwave Emission Model of Layered Snowpack for Multiple-Layer Snow

open access: yesRemote Sensing, 2021
Natural snow, one of the most important components of the cryosphere, is fundamentally a layered medium. In forward simulation and retrieval, a single-layer effective microstructure parameter is widely used to represent the emission of multiple-layer ...
Yue Yu, Jinmei Pan, Jiancheng Shi
doaj   +2 more sources

SMRT: an active–passive microwave radiative transfer model for snow with multiple microstructure and scattering formulations (v1.0) [PDF]

open access: yesGeoscientific Model Development, 2018
The Snow Microwave Radiative Transfer (SMRT) thermal emission and backscatter model was developed to determine uncertainties in forward modeling through intercomparison of different model ingredients.
G. Picard, M. Sandells, H. Löwe
doaj   +2 more sources

Microstructure of Snow and Its Link to Trace Elements and Isotopic Composition at Kohnen Station, Dronning Maud Land, Antarctica

open access: yesFrontiers in Earth Science, 2020
Understanding the deposition history and signal formation in ice cores from polar ice sheets is fundamental for the interpretation of paleoclimate reconstruction based on climate proxies. Polar surface snow responds to environmental changes on a seasonal
Dorothea Elisabeth Moser   +4 more
doaj   +2 more sources

Snowbreeder 5: a Micro-CT device for measuring the snow-microstructure evolution under the simultaneous influence of a temperature gradient and compaction

open access: yesJournal of Glaciology, 2017
The instrumented sample holder Snowbreeder 5 is used to investigate the simultaneous influence of settlement on temperature-gradient snow metamorphism in time-lapse micro-computed tomography experiments.
MAREIKE WIESE, MARTIN SCHNEEBELI
doaj   +2 more sources

Unraveling the optical shape of snow [PDF]

open access: yesNature Communications, 2023
The reflection of sunlight off the snow is a major driver of the Earth’s climate. This reflection is governed by the shape and arrangement of ice crystals at the micrometer scale, called snow microstructure.
Alvaro Robledano   +5 more
doaj   +2 more sources

Vapor flux and recrystallization during dry snow metamorphism under a steady temperature gradient as observed by time-lapse micro-tomography [PDF]

open access: yesThe Cryosphere, 2012
Dry snow metamorphism under an external temperature gradient is the most common type of recrystallization of snow on the ground. The changes in snow microstructure modify the physical properties of snow, and therefore an understanding of this process is ...
B. R. Pinzer   +2 more
doaj   +3 more sources

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

open access: yesInternational Journal of Digital Earth, 2021
Reliable microstructure measurement of snow is a requirement for microwave radiative transfer model validation. Snow specific surface area (SSA) can be measured using stereological methods, in which snow samples are cast in the field and photographed in ...
Jinmei Pan   +8 more
doaj   +2 more sources

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