Bogena, H. R., Herrmann, F., Jakobi, J., Brogi, C., Ilias, A., Huisman, J. A.,
Panagopoulos, A., and Pisinaras, V.: Monitoring of Snowpack Dynamics with
Cosmic-Ray Neutron Probes: A Comparison of Four Conversion Methods, Front.
Water, 2, 19, https://doi.org/10.3389/frwa.2020.00019, 2020.
Bormann, K. J., Westra, S., Evans, J. P., and McCabe, M. F: Spatial and
temporal variability in seasonal snow density, J. Hydrol., 484, 63–73,
2013.
Brown, R. D., Fang, B., and Mudryk, L.: Update of Canadian Historical Snow
Survey Data and Analysis of Snow Water Equivalent Trends, 1967–2016,
Atmos.-Ocean, 57, 149–156, https://doi.org/10.1080/07055900.2019.1598843, 2019.
Brown, R. D., Smith, C., Derksen, C., and Mudryk, L.: Canadian In Situ Snow
Cover Trends for 1955–2017 Including an Assessment of the Impact of
Automation, Atmos.-Ocean, 59, 77–92, https://doi.org/10.1080/07055900.2021.1911781, 2021.
Carroll, T. R.: Airborne Gamma Radiation Snow Survey Program: A user's
guide, Version 5.0. National Operational Hydrologic Remote Sensing Center
(NOHRSC), Chanhassen, 14, available at:
https://www.nohrsc.noaa.gov/snowsurvey/ (last access: 25 October 2021), 2001.
Choquette, Y., Ducharme, P., and Rogoza, J.: CS725, an accurate sensor for
the snow water equivalent and soil moisture measurements, in: Proceedings of
the International Snow Science Workshop, Grenoble, France, 7–11 October
2013, 2013.
Clark, M. P., Hendrikx, J., Slater, A. G., Kavetski, D., Anderson, B.,
Cullen, N. J., Kerr, T., Hreinsson, E. Ö., and Woods, R. A.:
Representing spatial variability of snow water equivalent in hydrologic and
land-surface models: A review, Water Resour. Res., 47, W07539,
https://doi.org/10.1029/2011WR010745, 2011.
Delunel, R., Bourles, D. L., van der Beek, P. A., Schlunegger, F., Leya, I.,
Masarik, J., and Paquet, E.: Snow shielding factors for cosmogenic nuclide
dating inferred from long-term neutron detector monitoring, Quat.
Geochronol., 24, 16–26, https://doi.org/10.1016/j.quageo.2014.07.003, 2014.
Desilets, D.: Calibrating a non-invasive cosmic ray soil moisture probe for
snow water equivalent, Hydroinnova Technical Document 17-01, Zenodo,
https://doi.org/10.5281/zenodo.439105, 2017.
Dixon, D. and Boon, S.: Comparison of the SnowHydro snow sampler with
existing snow tube designs, Hydrol. Process., 20, 2555–2562,
https://doi.org/10.1002/hyp.9317, 2012.
Desilets, D. and Zreda, M.: Footprint diameter for a cosmic-ray soil
moisture probe: Theory and Monte Carlo simulations, Water Resour. Res., 49,
3566–3575, 2013.
Dong, C.: Remote sensing, hydrological modeling and in situ observations in
snow cover research: A review, J. Hydrol., 561, 573–583, 2018.
Ducharme, P., Houdayer, A., Choquette, Y., Kapfer, B., and Martin, J. P.:
Numerical Simulation of Terrestrial Radiation over A Snow Cover, J. Atmos.
Ocean. Tech., 32, 1478–1485, 2015.
Ellerbruch, D. and Boyne, H.: Snow Stratigraphy and Water Equivalence
Measured with an Active Microwave System, J. Glaciol., 26, 225–233, 1980.
Evans, J. G., Ward, H. C., Blake, J. R., Hewitt, E. J., Morrison, R., Fry,
M., Ball, L. A., Doughty, L. C., Libre, J. W., Hitt, O. E., Rylett, D.,
Ellis, R. J., Warwick, A. C., Brooks., M., Parkes, M. A., Wright, G. M. H.,
Singer, A. C., Boorman, D. B., and Jenkins, A.: Soil water content in
southern England derived from a cosmic-ray soil moisture observing system –
COSMOS-UK, Hydrol. Process., 30, 4987–4999, https://doi.org/10.1002/hyp.10929, 2016.
Fujino, K., Wakahama, G., Suzuki, M., Matsumoto, T., and Kuroiwa, D.: Snow
stratigraphy measured by an active microwave sensor, Ann. Glaciol., 6,
207–210, 1985.
GCOS-WMO: The global observing system for climate: implementation needs,
World Meteorological Organization, Geneva, Switzerland, available at:
https://public.wmo.int/en/programmes/global-climate-observing-system (last access: 25 October 2021), 2016.
Goodison, B., Ferguson, H., and McKay, G.: Measurement and data analysis, in
handbook of snow: principles, processes, management, and use, Pergamon press
Canada, Toronto, Canada, 191–274, 1981.
Goodison, B. E., Glynn, J. E., Harvey, K. D., and Slater, J. E.: Snow Surveying
in Canada: A Perspective, Can. Water Resour. J., 12, 27–42, https://doi.org/10.4296/cwrj1202027, 1987.
Gottardi, F., Carrier, P., Paquet, E., Laval, M.-T., Gailhard, J., and
Garçon, R.: Le NRC: Une décennie de mesures de l’équivalent, in: Proceedings
of the International Snow Science Workshop Grenoble, 7–11 October 2013,
926–930, 2013.
Gray, D. M., Toth, B., Zhao, L., Pomeroy, J. W., and Granger, R. J.:
Estimating areal snowmelt infiltration into frozen soils, Hydrol. Process.,
15, 3095–3111, 2001.
GPRI brochure: GAMMA Portable Radar Interferometer (GPRI), available at:
https://gamma-rs.ch/uploads/media/Instruments_Info/gpri2_brochure_20160708.pdf, last access: 25 October 2021.
Gugerli, R., Salzmann, N., Huss, M., and Desilets, D.: Continuous and autonomous snow water equivalent measurements by
a cosmic ray sensor on an alpine glacier, The Cryosphere, 13, 3413–3434, https://doi.org/10.5194/tc-13-3413-2019, 2019.
Gunn, G. E., Duguay, C. R., Brown, L. C., King, J., Atwood, D., and Kasurak,
A.: Freshwater Lake Ice Thickness Derived Using Surface-based X- and Ku-band
FMCW Scatterometers, Cold Reg. Sci. Technol., 120, 115–126, 2015.
Haberkorn, A. (Eds.): European Snow Booklet – an Inventory of Snow
Measurements in Europe, 363 pp., 2019.
Henkel, P., Koch, F., Appel, F., Bach, H., Prasch, M., Schmid, L.,
Schweizer, J., and Mauser, W.: Snow water equivalent of dry snow derived
from GNSS Carrier Phases. IEEE T. Geosci. Remote, 56,
3561–3572, https://doi.org/10.1109/TGRS.2018.2802494, 2018.
Hu, X., Ma, C., Hu, R., and Yeo, T. S.: Imaging for Small UAV-Borne FMCW
SAR. Sensors, 19, 87, https://doi.org/10.3390/s19010087, 2019.
IMST: IMST sentireTM Radar Module 24 GHz sR-1200 Series User Manual.
available at:
http://www.radar-sensor.com/, last access: 25 October 2021.
Jitnikovitch, A., Marsh, P., Walker, B., and Desilets, D.: Cosmic-ray neutron method for the continuous measurement of Arctic snow accumulation and melt, The Cryosphere Discuss. [preprint], https://doi.org/10.5194/tc-2021-124, in review, 2021.
Key, J., Goodison, B., Schöner, W., Godøy, Ø., Ondráš, M., and
Snorrason, Á.: A Global Cryosphere Watch. Arctic, 68, 1, 48–58,
https://doi.org/10.14430/arctic4476, 2015.
Key, J., Schöner, W., Fierz, C., Citterio, M., and Ondráš, M.:
Global Cryosphere Watch (GCW) implementation plan, World Meteorological
Organization, Geneva, Switzerland, available at:
https://globalcryospherewatch.org/reference/documents/files/GCW_IP_v1.7.pdf (last access: 25 October 2021), 2016.
Kinar, N. J. and Pomeroy, J. W.: Measurement of the physical properties of
the snowpack, Rev. Geophys., 53, 481–544, https://doi.org/10.1002/2015RG000481, 2015.
King, J., Kelly, R., Kasurak, A., Duguay, C., Gunn, G., Rutter, N., Watts,
T., and Derksen, C.: Spatio-temporal influence of tundra snow properties on
Ku-band (17.2 GHz) backscatter, J. Glaciol., 61, 267–279, https://doi.org/10.3189/2015JoG14J020, 2015.
Kirkham, J. D., Koch, I., Saloranta, T. M., Litt, M., Stigter, E. E., Møen,
K., Thapa, A., Melvold, K., and Immerzeel, W. W.: Near Real-Time Measurement
of Snow Water Equivalent in the Nepal Himalayas, Front. Earth Sci., 7, 177,
https://doi.org/10.3389/feart.2019.00177, 2019.
Koch, F., Henkel, P., Appel, F., Schmid, L., Bach, H., Lamm, M., Prasch, M.,
Schweizer, J., and Mauser, W.: Retrieval of snow
water equivalent, liquid water content, and snow height of dry and wet snow
by combining GPS signal attenuation and time delay, Water Resour. Res., 55,
4465–4487, https://doi.org/10.1029/2018WR024431, 2019.
Laliberté, J., Langlois, A., Royer, A., Madore, J.-B., and Gauthier, F.:
Retrieving high contrasted interfaces in dry snow using a frequency
modulated continuous wave (FMCW) Ka-band radar: a context for dry snow
stability, Phys. Geogr., in press, 2021.
Langlois, A.: Applications of the PR Series Radiometers for Cryospheric and
Soil Moisture Research, Radiometrics Corporation, available at:
https://www.researchgate.net/publication/299372180_Applications_ of_the_PR_Series_Radiometers_for_Cryospheric_ and_Soil_Moisture_Research (last access: 25 October 2021), 2015.
Langlois, A., Royer, A., and Goïta, K.: Analysis of
simulated and spaceborne passive microwave brightness temperature using in
situ measurements of snow and vegetation properties, Can. J. Remote Sens.,
36, 135–148, https://doi.org/10.5589/m10-016, 2010.
Larson, K., Gutmann, E., Zavorotny, V., Braun, J., Williams, M., and
Nievinski, F.: Can we measure snow depth with GPS receivers? Geophys. Res.
Lett., 36, L17502, https://doi.org/10.1029/2009GL039430, 2009.
Larson, K. M.: GPS interferometric reflectometry: Applications to surface
soil moisture, snow depth, and vegetation water content in the western
United States, Wiley Interdisciplinary Reviews: Water, 3, 775–787,
https://doi.org/10.1002/wat2.1167, 2016.
Larson, K. M. and Small, E. E.: Normalized microwave reflection index: A
vegetation measurement derived from GPS networks, IEEE J. Sel. Top. Appl., 7, 1501–1511, https://doi.org/10.1109/JSTARS.2014.2300116, 2014.
Larue, F., Royer, A., De Sève, D., Roy, A., Picard, G., and Vionnet, V.:
Simulation and assimilation of passive microwave data using a snowpack model
coupled to a calibrated radiative transfer model over North-Eastern Canada,
Water Resour. Res., 54, 4823–4848, https://doi.org/10.1029/2017WR022132,
2018.
Leinss, S., Wiesmann, A., Lemmetyinen, J., and Hajnsek, I.: Snow Water
Equivalent of Dry Snow Measured by Differential Interferometry, IEEE J. Sel.
Top. Appl., 8, 3773–379, 2015.
Lejeune, Y., Dumont, M., Panel, J.-M., Lafaysse, M., Lapalus, P., Le Gac, E., Lesaffre, B., and Morin, S.: 57 years (1960–2017) of snow and meteorological observations from a mid-altitude mountain site (Col de Porte, France, 1325 m of altitude), Earth Syst. Sci. Data, 11, 71–88, https://doi.org/10.5194/essd-11-71-2019, 2019.
López-Moreno, J. I., Leppänen, L., Luks, B., Holko, L., Picard, G.,
Sanmiguel-Vallelado, A., Alonso-González, E., Finger, D.C., Arslan,
A. N., Gillemot, K., Sensoy, A., Sorman, A., Ertaş, M. C., Fassnacht,
S. R., Fierz, C., and Marty, C.: Intercomparison of measurements of bulk
snow density and water equivalent of snow cover with snow core samplers:
Instrumental bias and variability induced by observers, Hydrol.
Process., 34, 3120-3133, https://doi.org/10.1002/hyp.13785, 2020.
Martin, J.-P., Houdayer, A., Lebel, C., Choquette, Y., Lavigne, P., and
Ducharme, P.: An unattended gamma monitor for the determination of snow
water equivalent (SWE) using the natural ground gamma radiation. 2008 IEEE
Nuclear Science Symposium and Medical Conference, edited by: Sellin, P., IEEE, 983–988, 2008.
Matzler, C.: Microwave permittivity of dry snow, IEEE T. Geosci. Remote
Sens., 34, 573–581, https://doi.org/10.1109/36.485133, 1996.
Meloche, J., Langlois, A., Rutter, N., Royer, A., King, J., and Walker, B.: Characterizing Tundra snow sub-pixel variability to improve brightness temperature estimation in satellite SWE retrievals, The Cryosphere Discuss. [preprint], https://doi.org/10.5194/tc-2021-156, in review, 2021.
Meredith, M., Sommerkorn, M., Cassotta, S., Derksen, C., Ekaykin, A.,
Hollowed, A., Kofinas, G., Mackintosh, A., Melbourne-Thomas, J., Muelbert,
M. M. C., Ottersen, G., Pritchard, H., and Schuur, E. A. G.: Polar Regions, in: IPCC
Special Report on the Ocean and Cryosphere in a Changing Climate, edited by:
Pörtner, H.-O., Roberts, D. C., Masson-Delmotte, V., Zhai, P.,
Tignor, M., Poloczanska, E., Mintenbeck, K., Alegriìa, A., Nicolai, M.,
Okem, A., Petzold, J., Rama, B., and Weyer, N. M., available at:
https://www.ipcc.ch/srocc/chapter/chapter-3-2/ (last access: 25 October 2021), 2019.
Murray, R. M. and Holbert, K. E.: Nuclear Energy: An Introduction to the
Concepts, Systems, and Applications of Nuclear Processes, Eighth Edition,
Imprint Butterworth-Heinemann, Elsevier Inc., 624 pp., https://doi.org/10.1016/C2016-0-04041-X, 2020.
Okorn, R., Brunnhofer, G., Platzer, T., Heilig, A., Schmid, L., Mitterer,
C., Schweizer, J., and Eisen, O.: Upward-looking L-band FMCW radar for snow
cover monitoring, Cold Reg. Sci. Technol., 103, 31–40, 2014.
Paquet, E. and Laval, M. T.: Retour d'expeìrience et perspectives
d'exploitation des NivomeÌtres aÌ Rayonnement Cosmique d'EDF/Operation feedback and prospects of EDF Cosmic-Ray Snow Sensors, Houille
Blanche, 2, 113–119, 2006.
Paquet, E., Laval, M., Basalaev, L. M., Belov, A., Eroshenko, E., Kartyshov,
V., Struminsky, A., and Yanke, V.: An application of cosmic-ray neutron
measurements to the determination of the snow-water equivalent, Proc. 30th
Int. Cosm. Ray Conf., Mexico City, Mexico, 2008, 1, 761–764, 2008.
Peng, Z. and Li, C.: Portable Microwave Radar Systems for Short-Range
Localization and Life Tracking: A Review, Sensors, 19, 1136, https://doi.org/10.3390/s19051136, 2019.
Peterson, N. and Brown, J.: Accuracy of snow measurements, in: Proceedings
of the 43rd Annual Meeting of the Western Snow Conference, Coronado,
California, 1–5, 1975.
Pirazzini, R., Leppänen, L., Picard, G., López-Moreno, J. I., Marty,
C., Macelloni, G., Kontu, A., von Lerber, A., Tanis, C. M., Schneebeli, M.,
de Rosnay, P., and Arslan, A. N.: European in-situ snow measurements:
practices and purposes, Sensors, 8, 2016, https://doi.org/10.3390/s18072016, 2018.
Pomerleau, P., Royer, A., Langlois, A., Cliche, P., Courtemanche, B.,
Madore, J.B., Picard, G., and Lefebvre, É.: Low Cost and Compact FMCW 24 GHz Radar Applications for Snowpack and Ice Thickness
Measurements, Sensors, 20, 3909, https://doi.org/10.3390/s20143909,
2020.
Prince, M., Roy, A., Royer, A., and Langlois, A.: Timing and Spatial
Variability of Fall Soil Freezing in Boreal Forest and its Effect on SMAP
L-band Radiometer Measurements, Remote Sens. Environ., 231, 111230, https://doi.org/10.1016/j.rse.2019.111230, 2019.
Proksch, M., Rutter, N., Fierz, C., and Schneebeli, M.: Intercomparison of snow density measurements: bias, precision, and vertical resolution, The Cryosphere, 10, 371–384, https://doi.org/10.5194/tc-10-371-2016, 2016.
Rasmussen, R., Baker, B., Kochendorfer, J., Meyers, T., Landolt, S.,
Fischer, A. P., Black, J., Theìriault, J. M., Kucera, P., Gochis, D.,
Smith, C., Nitu, R., Hall, M., Ikeda, K., and Gutmann, E.: How Well Are We
Measuring Snow: The NOAA/FAA/NCAR Winter Precipitation Test Bed, B. Am.
Meteorol. Soc., 93, 811–829, 2012.
Rodriguez-Morales, F., Gogineni, S., Leuschen, C. J., Paden, J. D., Li, J.,
Lewis, C. C., Panzer, B., Alvestegui, D. G.-G., Patel, A., Byers, K.,
Crowe, R., Player, K., Hale, R., Arnold, E., Smith, L., Gifford, C.,
Braaten, D., and Panton, C.: Advanced multifrequency radar instrumentation
for polar research, IEEE T. Geosci. Remote, 52, 2824–2842, 2014.
Roy, A., Royer, A., St-Jean-Rondeau, O., Montpetit, B., Picard, G., Mavrovic, A., Marchand, N., and Langlois, A.: Microwave snow emission modeling uncertainties in boreal and subarctic environments, The Cryosphere, 10, 623–638, https://doi.org/10.5194/tc-10-623-2016, 2016.
Roy, A., Toose, P., Williamson, M., Rowlandson, T., Derksen, C., Royer, A.,
Berg, A., Lemmetyinen, J., and Arnold, L.: Response of L-Band brightness
temperatures to freeze/thaw and snow dynamics in a prairie environment from
ground-based radiometer measurements, Remote Sens. Environ., 191, 67–80,
2017.
Royer, A., Domine, F., Roy, A., Langlois, A., Marchand, N., and Davesne G.: New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across northeastern Canada, Écoscience, https://doi.org/10.1080/11956860.2021.1898775, 2021.
Rutter, N., Sandells, M., Derksen, C., Toose, P., Royer, A., Montpetit, B.,
Lemmetyinen, J., and Pulliainen, J.: Snow stratigraphic heterogeneity within
ground-based passive microwave radiometer footprints: implications for
emission modeling, J. Geophys. Res.-Earth, 199, 550–565,
https://doi.org/10.1002/2013JF003017, 2014.
Rutter, N., Sandells, M. J., Derksen, C., King, J., Toose, P., Wake, L., Watts, T., Essery, R., Roy, A., Royer, A., Marsh, P., Larsen, C., and Sturm, M.: Effect of snow microstructure variability on Ku-band radar snow water equivalent retrievals, The Cryosphere, 13, 3045–3059, https://doi.org/10.5194/tc-13-3045-2019, 2019.
Schattan, P., Baroni, G., Oswald, S. E., Schöber, J., Fey, C., Kormann,
C., Huttenlau, M., and Achleitner, S.: Continuous monitoring of snowpack
dynamics in alpine terrain by aboveground neutron sensing, Water Resour.
Res., 53, 3615–3634, https://doi.org/10.1002/2016WR020234, 2017.
Schneider, M.: Automotive radar – Status and trends, in: Proceedings of the
German Microwave Conference, Ulm, Germany, 5–7 April 2005, 144–147,
2005.
Shah, R., Xiaolan Xu, Yueh, S., Sik Chae, C., Elder, K., Starr, B., and Kim,
Y.: Remote Sensing of Snow Water Equivalent Using P-Band Coherent
Reflection, IEEE Geosci. Remote S., 14, 309–313, https://doi.org/10.1109/LGRS.2016. 2636664, 2017.
Sigouin, M. J. P. and Si, B. C.: Calibration of a non-invasive cosmic-ray probe for wide area snow water equivalent measurement, The Cryosphere, 10, 1181–1190, https://doi.org/10.5194/tc-10-1181-2016, 2016.
Smith, C. D., Kontu, A., Laffin, R., and Pomeroy, J. W.: An assessment of two automated snow water equivalent instruments during the WMO Solid Precipitation Intercomparison Experiment, The Cryosphere, 11, 101–116, https://doi.org/10.5194/tc-11-101-2017, 2017.
Steiner, L., Meindl, M., Fierz, C., and Geiger, A.: An assessment of sub-snow GPS for quantification of snow water equivalent, The Cryosphere, 12, 3161–3175, https://doi.org/10.5194/tc-12-3161-2018, 2018.
Steiner, L., Meindl, M., and Geiger, A.: Characteristics and limitations of
GPS L1 observations from submerged antennas, J. Geodesy, 93, 267–280,
https://doi.org/10.1007/s00190-018-1147-x, 2019.
Stranden, H. B., Ree, B. L., and Møen, K. M.: Recommendations for
Automatic Measurements of Snow Water Equivalent in NVE. Report of the
Norwegian Water Resources and Energy Directorate, Majorstua, Oslo, Noway, 34 pp., 2015.
Stuefer, S., Kane, L. D., and Liston, G. E.: In situ snow water equivalent
observations in the US Arctic, Hydrol. Res., 44, 21–34,
https://doi.org/10.2166/nh.2012.177, 2013.
Sturm, M., Taras, B., Liston, G., Derksen, C., Jones, T., and Lea, J.:
Estimating snow water equivalent using snow depth data and climate classes,
J. Hydrometeorol., 11, 1380–1394, 2010.
Tiuri, M., Sihvola, A., Nyfors, E., and Hallikainen, M.: The complex
dielectric constant of snow at microwave frequencies, IEEE J. Oceanic Eng.,
9, 377–382, 1984.
Turcan, J. and Loijens, J.: Accuracy of snow survey data and errors in snow
sampler measurements, Proc. 32nd East. Snow. Conf., 2–11, 1975.
Vather, T., Everson, C. S., and Franz, T. E.: The applicability of the
cosmic ray neutron sensor to simultaneously monitor soil water content and
biomass in an Acacia mearnsii Forest, Hydrology, 7, 48,
https://doi.org/10.3390/hydrology7030048, 2020.
Vriend, N. M., McElwaine, J. N., Sovilla, B., Keylock, C. J., Ash, M., and
Brennan, P. V.: High-resolution radar measurements of snow avalanches,
Geophys. Res. Lett., 40, 727–731, 2013.
Wallbank, J. R., Cole, S. J., Moore, R. J., Anderson, S. R., and Mellor, E. J.:
Estimating snow water equivalent using cosmic-ray neutron sensors from the
COSMOS-UK network, Hydrol. Process., 35, e14048.
https://doi.org/10.1002/hyp.14048, 2021.
Werner, C., Wiesmann, A., Strozzi, T., Schneebeli, M., and
Mätzler, C.: The SnowScat ground-based polarimetric
scatterometer: Calibration and initial measurements from Davos Switzerland,
in: Proc. IEEE Int. Geosci. Remote Sens. Symp. (IGARSS'10), Jul. 2010,
2363–2366, 2010.
Werner, C., Suess, M., Wegmüller, U., Frey, O., and Wiesmann A.: The Esa
Wideband Microwave Scatterometer (Wbscat): Design and Implementation, in:
Proc. IGARSS 2019 – IEEE International Geoscience and Remote Sensing
Symposium, 8339–8342, https://doi.org/10.1109/IGARSS.2019.8900459, 2019.
Wiesmann, A., Werner, C., Strozzi, T., Matzler, C., Nagler, T., Rott, H.,
Schneebeli, M., and Wegmüller, U.: SnowScat, X- to
Ku-Band Scatterometer Development, in Proc. of ESA Living Planet Symposium,
Bergen 28.6.–2.7., available at:
https://gamma-rs.ch/uploads/media/Instruments_Info/gamma_snowscat.pdf (last access: 25 October 2021), 2010.
Wiesmann, A., Werner, C., Wegmüller, U., Schwank, M., and Matzler, C.:
ELBARA II, L-band Radiometer for SMOS Cal/Val Purposes, available at:
https://gamma-rs.ch/uploads/media/Instruments_Info/ELBARAII_poster.pdf, last access: 25 October 2021.
Wigneron, J. P., Jackson, T. J., O'Neill, P., De Lannoy, G. J., de Rosnay, P.,
Walker, J. P., Ferrazzoli, P., Mironov, V., Bircher, S., Grant, J. P., Kurum,
M., Schwank, M., Munoz-Sabater, J., Das, N., Royer, A., Al-Yaari, A., Bitar,
A. Fernandez-Moran, R., Lawrence, H., Mialon, A., Parrens, M., Richaume, P.,
Delwart, S., and Kerr, Y.: Modelling the passive microwave signature from
land surfaces: A review of recent results and application to the L-Band SMOS
& SMAP soil moisture retrieval algorithms, Remote Sens. Environ., 192,
238–262, 2017.
Work, R. A., Stockwell, H. J., Freeman, T. G., and Beaumont, R. T.: Accuracy
of field snow surveys, western United States, including Alaska, Cold Regions
Research and Engineering Laboratory (U.S.) Technical report, 163, 49 pp.,
available at:
https://hdl.handle.net/11681/5580 (last access: 25 October 2021), 1965.
Wright, M., Kavanaugh, K., and Labine, C.: Performance Analysis of the GMON3
Snow Water Equivalency Sensor. Proceedings of The Western Snow Conference.
Stateline, NV, USA, April 2011, Poster on line, available at:
https://s.campbellsci.com/documents/us/miscellaneous/performance-analysis-cs725.pdf (last access: 25 October 2021), 2011.
Wright, M.: CS725 Frozen Potential: The Ability to Predict Snow Water
Equivalent is Essential. METEOROLOGICAL TEChnOLOGy InTERnATIOnAL, August
2013, 122–123, available at:
https://www.meteorologicaltechnologyinternational.com (last access: 25 October 2021), 2013.
Xu, X., Baldi, C., Bleser, J.-W., Lei, Y., Yueh, S., and Esteban-Fernandez,
D.: Multi-Frequency Tomography Radar Observations of Snow Stratigraphy at
Fraser During SnowEx, in Proceedings of the IGARSS 2018-2018 IEEE
International Geoscience and Remote Sensing Symposium, Valencia, Spain,
22–27 July 2018, 2018.
Yao, H., Field, T., McConnell, C., Beaton, A., and James, A.L.: Comparison of
five snow water equivalent estimation methods across categories, Hydrol.
Process., 32, 1894–1908, https://doi.org/10.1002/hyp.13129, 2018.
Zreda, M., Desilets, D., Ferré, T. P., and Scott, R. L.: Measuring soil moisture content non‐invasively at intermediate spatial scale using cosmic‐ray neutrons, Geophys. Res. Lett., 35, L21402, https://doi.org/10.1029/2008GL035655, 2008.
