scholarly journals Intercomparison of snow sampling and analysis within the alpine-wide snowpack investigation (SNOSP)

1997 ◽  
Vol 93 (1-4) ◽  
pp. 67-91 ◽  
Author(s):  
M. Schwikowski ◽  
A. Novo ◽  
U. Baltensperger ◽  
R. Delmas ◽  
H. W. Gäggeler ◽  
...  
Keyword(s):  
Snow Sampling

scholarly journals SNOW SAMPLING RESULTS FROM THREE SAMPLERS

1963 ◽  
Vol 8 (4) ◽  
pp. 74-78 ◽  
Author(s):  
Robert T. BEAUMONT ◽  
R. A. WORK
Keyword(s):  
Snow Sampling

scholarly journals Spatio-temporal influence of tundra snow properties on Ku-band (17.2 GHz) backscatter

2015 ◽  
Vol 61 (226) ◽  
pp. 267-279 ◽  
Author(s):  
Joshua King ◽  
Richard Kelly ◽  
Andrew Kasurak ◽  
Claude Duguay ◽  
Grant Gunn ◽  
...  
Keyword(s):  
Near Infrared ◽  
Snow Water Equivalent ◽  
Sampling Procedure ◽  
Field Of View ◽  
Boreal Winter ◽  
Snow Properties ◽  
Snow Sampling ◽  
Temporal Influence ◽  
Spatio Temporal ◽  
Ku Band

AbstractDuring the 2010/11 boreal winter, a distributed set of backscatter measurements was collected using a ground-based Ku-band (17.2 GHz) scatterometer system at 26 open tundra sites. A standard snow-sampling procedure was completed after each scan to evaluate local variability in snow layering, depth, density and water equivalent (SWE) within the scatterometer field of view. The shallow depths and large basal depth hoar encountered presented an opportunity to evaluate backscatter under a set of previously untested conditions. Strong Ku-band response was found with increasing snow depth and snow water equivalent (SWE). In particular, co-polarized vertical backscatter increased by 0.82 dB for every 1 cm increase in SWE (R2 = 0.62). While the result indicated strong potential for Ku-band retrieval of shallow snow properties, it did not characterize the influence of sub-scan variability. An enhanced snow-sampling procedure was introduced to generate detailed characterizations of stratigraphy within the scatterometer field of view using near-infrared photography along the length of a 5 m trench. Changes in snow properties along the trench were used to discuss variations in the collocated backscatter response. A pair of contrasting observation sites was used to highlight uncertainties in backscatter response related to short length scale spatial variability in the observed tundra environment.

scholarly journals Instruments and Methods: Sampling Characteristics of Neutron Probe Measurements in a Mountain Snow Pack

1966 ◽  
Vol 6 (44) ◽  
pp. 289-298
Author(s):  
Charles F. Cooper
Keyword(s):  
Water Content ◽  
Field Tests ◽  
Poor Correlation ◽  
Sampling Station ◽  
Snow Pack ◽  
Neutron Probe ◽  
Snow Sampling ◽  
Neutron Moisture ◽  
Increase In Accuracy ◽  
Probe Measurements

AbstractAdvantages of neutron moisture probes over standard snow sampling tubes include integration of water content over a greater horizontal extent, easier measurement of snow layering, and possible increase in accuracy through elimination of the need to extract a full core. However, the neutron probe is better suited for evaluation of water content changes with time at a fixed location, as in soil moisture studies, than for measurement of the total water content of a variable snow pack. Field tests in the mountains of Idaho, U.S.A., showed statistically significant differences among mean snow densities determined by a neutron probe in closely spaced holes at a single sampling station. Within-station variance was about the same as with a conventional snow tube. There were significant differences in density for a given depth from hole to hole, but statistical interactions make it difficult to interpret these differences. There was a poor correlation between measurements made in the same hole with a neutron probe and with a snow sampling tube.

scholarly journals COMBLE-Isotopic Links to Atmospheric Water’s Sources (ISLAS) Snow Sampling 2020 Field Campaign Report

2020 ◽  
Author(s):  
Harald Sodemann ◽  
◽  
Alena Dekhtyareva ◽  
Andrew Seidl ◽  
Aina Johannessen ◽  
...  
Keyword(s):  
Field Campaign ◽  
Snow Sampling

Test of snow-sampling tubes of large and small diameter

1941 ◽  
Vol 22 (1) ◽  
pp. 151 ◽  
Author(s):  
Bertram C. Goodell ◽  
Kenneth L. Roberts
Keyword(s):  
Small Diameter ◽  
Snow Sampling

scholarly journals Instruments and Methods: Sampling Characteristics of Neutron Probe Measurements in a Mountain Snow Pack

1966 ◽  
Vol 6 (44) ◽  
pp. 289-298 ◽  
Author(s):  
Charles F. Cooper
Keyword(s):  
Water Content ◽  
Field Tests ◽  
Poor Correlation ◽  
Sampling Station ◽  
Snow Pack ◽  
Neutron Probe ◽  
Snow Sampling ◽  
Neutron Moisture ◽  
Increase In Accuracy ◽  
Probe Measurements

Abstract Advantages of neutron moisture probes over standard snow sampling tubes include integration of water content over a greater horizontal extent, easier measurement of snow layering, and possible increase in accuracy through elimination of the need to extract a full core. However, the neutron probe is better suited for evaluation of water content changes with time at a fixed location, as in soil moisture studies, than for measurement of the total water content of a variable snow pack. Field tests in the mountains of Idaho, U.S.A., showed statistically significant differences among mean snow densities determined by a neutron probe in closely spaced holes at a single sampling station. Within-station variance was about the same as with a conventional snow tube. There were significant differences in density for a given depth from hole to hole, but statistical interactions make it difficult to interpret these differences. There was a poor correlation between measurements made in the same hole with a neutron probe and with a snow sampling tube.

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