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Antarctic Firn Characterization via Wideband Microwave Radiometry
2022
Remote Sensing
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Results of the initial analyses over Concordia and Vostok Stations in Antarctica indicate that GPM brightness temperature measurements provide critical information regarding the subsurface temperatures ...
Different frequencies within the wide spectra of radiometers result in different electromagnetic propagation losses and thus reveal characteristics at different depths in ice and snow. ...
Acknowledgments: GPM intercalibrated brightness temperature data are available at NASA Goddard Space Flight Center's Precipitation Processing System (PPS) FTP [39]. 6.9 GHz and 7.3 GHz AMSR2 brightness ...
doi:10.3390/rs14092258
fatcat:kxs5exoee5ahjmptzr7h3g7dkm
Modeling the Observed Microwave Emission from Shallow Multi-Layer Tundra Snow Using DMRT-ML
2017
Remote Sensing
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The DMRT-ML was parameterized with the in situ snow measurements using a two-layer snowpack and run in two configurations: a depth hoar and a wind slab dominated pack. ...
Airborne radiometer observations coordinated with ground-based in situ snow measurements were acquired in the Canadian high Arctic near Eureka, NT, in April 2011. ...
The Eureka snow and airborne radiometer measurements were supported by Environment Canada as part of the PAMARCMIP 2011 campaign. ...
doi:10.3390/rs9121327
fatcat:ajlniapqy5e5dghd5hv55zvj2a
Evaluation of the HUT modified snow emission model over lake ice using airborne passive microwave measurements
2011
Remote Sensing of Environment
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Microwave emission models have been used to simulate brightness temperatures (Tbs) for snowpack characteristics in terrestrial environments but cannot be applied to snow on lakes because of the differing ...
The algorithms designed to estimate snow water equivalent (SWE) using passive microwave measurements falter in lake-rich high-latitude environments due to the emission properties of ice covered lakes on ...
Acknowledgements This research was supported by a Government of Canada IPY grant (Variability and Change in the Canadian Cryosphere, Anne Walker, PI) and an NSERC Discovery Grant to C. Duguay. ...
doi:10.1016/j.rse.2010.09.001
fatcat:2o55wuoc5rdclohipaccajv3na
Evaluation of passive microwave snow water equivalent retrievals across the boreal forest/tundra transition of western Canada
2005
Remote Sensing of Environment
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Composite patterns of monthly averaged (1978 -2002) satellite passive microwave derived snow water equivalent (SWE) data produced using the Meteorological Service of Canada land cover sensitive algorithm ...
Results of the March survey (at which point mean snow depths had increased from approximately 30 -60 cm) showed an increase in absolute SWE differences between the in situ measurements and passive microwave ...
Acknowledgments The EASE-Grid land cover information was obtained from the EOSDIS National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), University of Colorado at Boulder. ...
doi:10.1016/j.rse.2005.02.014
fatcat:osri2tlmmncxjhrzwbyp3ksqpi
Editorial for Special Issue: "Remote Sensing of Environmental Changes in Cold Regions"
2019
Remote Sensing
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Cold regions, characterized by the presence of permafrost and extensive snow and ice cover, are significantly affected by changing climate [...] ...
Evaluations of the model simulations against ground-based radiometer measurements show that the WALOMIS model can well reproduce the observed brightness temperature (Tb) with overall root-mean-square error ...
A parameterized model to estimate MRRD was developed using the combination of theoretical model simulations and field measurements. ...
doi:10.3390/rs11182165
fatcat:stkbxauljfdqdo5tgjlt66vtxi
Simulating the influence of temperature on microwave transmissivity of trees during winter observed by spaceborne microwave radiometery
2020
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
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This follow-on study uses ground-based radiometer observations, Advanced Microwave Scanning Radiometer 2 (AMSR2) observations, and model simulation to evaluate how this temperature-transmissivity relationship ...
for passive microwave snow depth and snow water equivalent retrievals which observe snow-covered landscapes, including boreal forests, at air temperatures below freezing. ...
The ground measured radiometer data and ancillary data are provided by the FMI Arctic Research Centre, the GCOM-W1 AMSR2 level 1R Tb product is provided by JAXA, and MODIS MOD44b Version 6 Vegetation ...
doi:10.1109/jstars.2020.3017618
fatcat:5t7vxcintzfypad4vzettxnvme
Microwave Radiometry at Frequencies from 500 to 1400 MHz: An Emerging Technology for Earth Observations
2021
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
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Recent airborne experiments have shown the potential of brightness temperature measurements from 500-1400 MHz to address these limitations by enabling sensing of soil moisture and sea ice thickness to ...
However, the absence of significant spectrum reserved for passive microwave measurements in the 500-1400 MHz band requires both an opportunistic sensing strategy and systems for reducing the impact of ...
Random noise was added to the simulated brightness temperature measurements and on the in situ parameters (SST, wind speed and direction, SSS) used in the forward model. ...
doi:10.1109/jstars.2021.3073286
pmid:34211622
pmcid:PMC8244653
fatcat:zxeazunt6rfjjdm5hqleu2pj3y
Field measurements for remote sensing of the cryosphere
[chapter]
2014
Remote Sensing of the Cryosphere
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This chapter reviews standard in situ manual field measurements for snow and ice properties, as well as newer high-resolution techniques and instruments used to simulate airborne and spaceborne remote ...
Simulating remote sensing measurements using ground-based sensors provides the ability to perform both in situ and remote sensing measurements at the same scale, providing insight into the dominant physical ...
Over Greenland, microwave radiometers have been used to collect passive microwave data in proximity to the Summit station in order to understand the spatial variability of brightness temperature within ...
doi:10.1002/9781118368909.ch14
fatcat:4oodsbjfdrfq7bexbyg4wiysfa
Detection of Snowmelt Using Spaceborne Microwave Radiometer Data in Eurasia From 1979 to 2007
2009
IEEE Transactions on Geoscience and Remote Sensing
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In this paper, four different algorithms are used to determine the snowmelt date from Scanning Multichannel Microwave Radiometer and Special Sensor Microwave/Imager data for a nearly 30-year period. ...
Determining the date of snowmelt clearance is an important issue for hydrological and climate research. Spaceborne radiometers are ideally suited for global snowmelt monitoring. ...
Algorithms to detect snowmelt from spaceborne microwave radiometer data have been investigated by several authors, typically applying brightness temperatures observed at frequencies of 19 and 37 GHz. ...
doi:10.1109/tgrs.2009.2018442
fatcat:q76lbyxvtbgnnaf5goentncwma
WindSat Passive Microwave Polarimetric Signatures of the Greenland Ice Sheet
2008
IEEE Transactions on Geoscience and Remote Sensing
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As the first spaceborne polarimetric microwave radiometer, it was designed to measure ocean surface wind speed and direction by including the third and fourth Stokes parameters, which are mostly related ...
In this paper, we present the full polarimetric signatures obtained from WindSat over Greenland, and use a simple empirical observation model to quantify the azimuthal variations of the signatures in space ...
Steffen of the University of Colorado at Boulder for providing GC-Net data. The authors would also like to thank Dr. R. Bevilacqua of NRL and Dr. K. Steffen for valuable discussions and information. ...
doi:10.1109/tgrs.2008.917727
fatcat:k5sqfnfzhveotewy2k6q6xu5yq
Snow wetness retrieved from close-range L-band radiometry in the western Greenland ablation zone
2020
Journal of Glaciology
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The emission model (EM) used in the retrieval is a two-layer configuration of the 'L-Band Specific Microwave Emission Model of Layered Snowpack'. ...
Snow liquid-water and its melt/refreeze are retrieved from microwave antenna temperatures measured with the ground-based L-band radiometer ELBARA-III. ...
Dr Konrad Steffen at the Swiss Federal Research Institute WSL who provided invaluable scientific and logistical support and hosted this measurement campaign at Swiss Camp in May 2019. ...
doi:10.1017/jog.2020.79
fatcat:zxw4mamawzc4zp4llwms32m3ca
Ground mobile observation system for measuring multisurface microwave emissivity
2021
Atmospheric Measurement Techniques
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The major components of the system include a dual-frequency polarized ground microwave radiometer, a mobile observation platform, and auxiliary sensors to measure the surface temperature and soil temperature ...
To better understand the microwave emissivity over land surfaces, we designed and established a ground observation system for the in situ observation of microwave emissivities over several typical surfaces ...
We thank the staff at the Xianghe site for their maintenance work on the microwave radiometer and the ground mobile observation system. Review statement. This paper was edited by S. ...
doi:10.5194/amt-14-7069-2021
fatcat:zocva5na4rambcirbgwhgzdhga
Melting trends over the Greenland ice sheet (1958–2009) from spaceborne microwave data and regional climate models
2011
The Cryosphere
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Differences between satellitederived and model-simulated results still occur and are used here to identify (i) biases in the snow models (notably in the albedo parametrization, in the thickness of a snow ...
layer, in the maximum liquid water content within the snowpack and in the snowfall impacting the bare ice appearance in summer) and (ii) limitations in the use of passive microwave data for snowmelt detection ...
Xavier Fettweis is a postdoctoral researcher of the Belgian National Fund for Scientific Research. ...
doi:10.5194/tc-5-359-2011
fatcat:f532guiribgfvhsr44r6v6usnm
Melting trends over the Greenland ice sheet (1958-2009) from spaceborne microwave data and regional climate models
2010
The Cryosphere Discussions
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Differences between satellitederived and model-simulated results still occur and are used here to identify (i) biases in the snow models (notably in the albedo parametrization, in the thickness of a snow ...
layer, in the maximum liquid water content within the snowpack and in the snowfall impacting the bare ice appearance in summer) and (ii) limitations in the use of passive microwave data for snowmelt detection ...
Xavier Fettweis is a postdoctoral researcher of the Belgian National Fund for Scientific Research. ...
doi:10.5194/tcd-4-2433-2010
fatcat:ws4denflufciznaz2rce5o3ftq
Sensitivity analysis of airborne microwave retrieval of stratiform precipitation to the melting layer parameterization
2001
IEEE Transactions on Geoscience and Remote Sensing
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A sensitivity analysis for airborne microwave passive and active retrievals of hydrometeor profiles with respect to melting-layer parameterizations is carried out using synthetic data. ...
Index Terms-Microwave radiometry and radar meteorology, precipitation retrieval, radiative transfer modeling, spaceborne remote sensing. ...
Khain for providing the cloud model simulations and many comments on their utilization as well, and Dr. P. Baptista and Dr. A. Mugnai for their general support on this subject. ...
doi:10.1109/36.898667
fatcat:c3i6nuit3rgrziktvmebx2utca
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