Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Peter Toose"'
Autor:
Alexandre Roy, Marion Leduc-Leballeur, Ghislain Picard, Alain Royer, Peter Toose, Chris Derksen, Juha Lemmetyinen, Aaron Berg, Tracy Rowlandson, Mike Schwank
Publikováno v:
Remote Sensing, Vol 10, Iss 9, p 1451 (2018)
Detailed angular ground-based L-band brightness temperature (TB) measurements over snow covered frozen soil in a prairie environment were used to parameterize and evaluate an electromagnetic model, the Wave Approach for LOw-frequency MIcrowave emissi
Externí odkaz:
https://doaj.org/article/3c67064212f8476e9c079399e3cfff9d
Publikováno v:
Remote Sensing, Vol 9, Iss 12, p 1242 (2017)
Dual-polarized airborne passive microwave (PM) brightness temperatures (Tb) at 6.9 GHz H/V, 19 GHz H/V and 37 GHz H/V and spaceborne active microwave (AM) X-band (9.65 GHz VV, VH) backscatter (σ0) are observed coincident to in situ snow and lake-ice
Externí odkaz:
https://doaj.org/article/b8b582516ab64df2810b4932fc66f380
Publikováno v:
Remote Sensing, Vol 9, Iss 12, p 1327 (2017)
The observed brightness temperatures (Tb) at 37 GHz from typical moderate density dry snow in mid-latitudes decreases with increasing snow water equivalent (SWE) due to volume scattering of the ground emissions by the overlying snow. At a certain poi
Externí odkaz:
https://doaj.org/article/abef7ce919e74424b33c74049d3d7d8c
Autor:
Alexandre Roy, Peter Toose, Chris Derksen, Tracy Rowlandson, Aaron Berg, Juha Lemmetyinen, Alain Royer, Erica Tetlock, Warren Helgason, Oliver Sonnentag
Publikováno v:
Remote Sensing, Vol 9, Iss 9, p 894 (2017)
Passive microwave measurements from space are known to be sensitive to the freeze/thaw (F/T) state of the land surface. These measurements are at a coarse spatial resolution (~15–50 km) and the spatial variability of the microwave emissions within
Externí odkaz:
https://doaj.org/article/3b850fb703364e88be9303364e82fd08
Autor:
Melody Sandells, Nick Rutter, Kirsty Wivell, Richard Essery, Stuart Fox, Chawn Harlow, Ghislain Picard, Alexandre Roy, Alain Royer, Peter Toose
Publikováno v:
eISSN
Accurate simulations of snow emission in surface-sensitive microwave channels are needed to separate snow from atmospheric information essential for numerical weather prediction. Measurements from a field campaign in Trail Valley Creek, Inuvik, Canad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::933de57f678c7a9c09d171ec31f5e993
https://doi.org/10.5194/egusphere-2023-696
https://doi.org/10.5194/egusphere-2023-696
Autor:
Mike Brady, Justin Beckers, Joshua King, Peter Toose, Christian Haas, Chris Derksen, Stephen E. L. Howell
Publikováno v:
The Cryosphere, Vol 14, Pp 4323-4339 (2020)
Local-scale variations in snow density and layering on Arctic sea ice were characterized using a combination of traditional snow pit and SnowMicroPen (SMP) measurements. In total, 14 sites were evaluated within the Canadian Arctic Archipelago and Arc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a0ad3666720017d540525c419c25c01
https://tc.copernicus.org/articles/14/4323/2020/
https://tc.copernicus.org/articles/14/4323/2020/
Autor:
Eugenia De Marco, Albert Wu, Andreas Colliander, Alexander Roy, K. L. M. Lewis, Xiaolan Xu, Tracy Rowlandson, Peter Toose, Kyle C. McDonald, Chris Derksen, Jarrett Powers, Edward J. Kim, Paul R. Houser, Jared Entin, Aaron A. Berg, Renato Pardo Lara, Alex Mavrovic
Publikováno v:
Remote Sensing of Environment. 211:59-70
A field campaign was conducted October 30th to November 13th, 2015 with the intention of capturing diurnal soil freeze/thaw state at multiple scales using ground measurements and remote sensing measurements. On four of the five sampling days, we obse
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 56:2887-2903
A winter time series of ground-based (X- and Ku-bands) scatterometer and spaceborne synthetic aperture radar (SAR) (C-band) fully polarimetric observations coincident with in situ snow and ice measurements are used to identify the dominant scattering
Autor:
Tracy Rowlandson, Erica Tetlock, Alexandre Roy, Chris Derksen, Lauren Arnold, Aaron A. Berg, Matthew Williamson, Peter Toose
Publikováno v:
Remote Sensing Letters. 9:403-410
Assessment of remote sensing derived freeze/thaw products from L-band radiometry requires ground validation. There is growing interest in utilizing soil moisture networks to meet this validation re...
Publikováno v:
Hydrology Research. 49:1-16
Several large in-situ soil moisture-monitoring networks currently exist over seasonally frozen regions that may have use for the validation of remote sensing soil freeze/thaw (F/T) products. However, further understanding of how the existing network