Search Results - "Landy, Jack C."

A Facet-Based Numerical Model for Simulating SAR Altimeter Echoes From Heterogeneous Sea Ice Surfaces by Landy, Jack C., Tsamados, Michel, Scharien, Randall K.

“…Cryosat-2 has provided measurements of pan-Arctic sea ice thickness since 2010 with unprecedented spatial coverage and frequency. However, it remains uncertain…”
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Revisiting Trans-Arctic Maritime Navigability in 2011–2016 from the Perspective of Sea Ice Thickness by Zhou, Xiangying, Min, Chao, Yang, Yijun, Landy, Jack C., Mu, Longjiang, Yang, Qinghua

“…Arctic navigation has become operational in recent decades with the decline in summer sea ice. To assess the navigability of trans-Arctic passages, combined…”
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Brief communication: Conventional assumptions involving the speed of radar waves in snow introduce systematic underestimates to sea ice thickness and seasonal growth rate estimates by Mallett, Robbie D. C, Lawrence, Isobel R, Stroeve, Julienne C, Landy, Jack C, Tsamados, Michel

“…Pan-Arctic sea ice thickness has been monitored over recent decades by satellite radar altimeters such as CryoSat-2, which emits Ku-band radar waves that are…”
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Sub-kilometre scale distribution of snow depth on Arctic sea ice from Soviet drifting stations by Mallett, Robbie D. C., Stroeve, Julienne C., Tsamados, Michel, Willatt, Rosemary, Newman, Thomas, Nandan, Vishnu, Landy, Jack C., Itkin, Polona, Oggier, Marc, Jaggi, Matthias, Perovich, Don

“…The sub-kilometre scale distribution of snow depth on Arctic sea ice impacts atmosphere-ice fluxes of energy and mass, and is of importance for satellite…”
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Arctic Freeboard and Snow Depth From Near‐Coincident CryoSat‐2 and ICESat‐2 (CRYO2ICE) Observations: A First Examination of Winter Sea Ice During 2020–2022 by Fredensborg Hansen, Renée M., Skourup, Henriette, Rinne, Eero, Høyland, Knut V., Landy, Jack C., Merkouriadi, Ioanna, Forsberg, René

“…In the summer of 2020, ESA changed the orbit of CryoSat‐2 to align periodically with NASA's ICESat‐2 mission, a campaign known as CRYO2ICE, which allows for…”
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A year-round satellite sea-ice thickness record from CryoSat-2 by Landy, Jack C., Dawson, Geoffrey J., Tsamados, Michel, Bushuk, Mitchell, Stroeve, Julienne C., Howell, Stephen E. L., Krumpen, Thomas, Babb, David G., Komarov, Alexander S., Heorton, Harry D. B. S., Belter, H. Jakob, Aksenov, Yevgeny

“…Arctic sea ice is diminishing with climate warming 1 at a rate unmatched for at least 1,000 years 2 . As the receding ice pack raises commercial interest in…”
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Sea ice thickness in the Eastern Canadian Arctic: Hudson Bay Complex & Baffin Bay by Landy, Jack C., Ehn, Jens K., Babb, David G., Thériault, Nathalie, Barber, David G.

“…Past observations of sea ice thickness in the Eastern Canadian Arctic (ECA) have generally been restricted to drill-hole measurements at a few local sites on…”
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Sea Ice Roughness Overlooked as a Key Source of Uncertainty in CryoSat‐2 Ice Freeboard Retrievals by Landy, Jack C., Petty, Alek A., Tsamados, Michel, Stroeve, Julienne C.

“…ESA's CryoSat‐2 has transformed the way we monitor Arctic sea ice, providing routine measurements of the ice thickness with near basin‐wide coverage. Past…”
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Increasing Multiyear Sea Ice Loss in the Beaufort Sea: A New Export Pathway for the Diminishing Multiyear Ice Cover of the Arctic Ocean by Babb, David G., Galley, Ryan J., Howell, Stephen E. L., Landy, Jack C., Stroeve, Julienne C., Barber, David G.

“…Historically, multiyear sea ice (MYI) covered a majority of the Arctic and circulated through the Beaufort Gyre for years. However, increased ice melt in the…”
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Correction to "A Facet-Based Numerical Model for Simulating SAR Altimeter Echoes From Heterogeneous Sea Ice Surfaces" [Jul 19 DOI: 10.1109/TGRS.2018.2889763] by Landy, Jack C., Tsamados, Michel, Scharien, Randall K.

“…In <xref ref-type="bibr" rid="ref1">[1] , there is an error in the caption for Figure 8. The waveforms shown in Fig. 8(b) are for a surface with Gaussian…”
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Comparing elevation and backscatter retrievals from CryoSat-2 and ICESat-2 over Arctic summer sea ice by Dawson, Geoffrey J, Landy, Jack C

“…The CryoSat-2 radar altimeter and ICESat-2 laser altimeter can provide complementary measurements of the freeboard and thickness of Arctic sea ice. However,…”
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Albedo feedback enhanced by smoother Arctic sea ice by Landy, Jack C., Ehn, Jens K., Barber, David G.

“…The ICESat operational period 2003–2008 coincided with a dramatic decline in Arctic sea ice—linked to prolonged melt season duration and enhanced melt pond…”
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Parameterization of Centimeter-Scale Sea Ice Surface Roughness Using Terrestrial LiDAR by Landy, Jack C., Isleifson, Dustin, Komarov, Alexander S., Barber, David G.

“…Microwave scattering from sea ice is partially controlled by the ice surface roughness. In this paper, we propose a technique for calculating 2-D…”
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Airborne Investigation of Quasi-Specular Ku-Band Radar Scattering for Satellite Altimetry Over Snow-Covered Arctic Sea Ice by De Rijke-Thomas, Claude, Landy, Jack C., Mallett, Robbie, Willatt, Rosemary C., Tsamados, Michel, King, Joshua

“…Surface-based Ku-band radar altimetry investigations indicate that the radar signal is typically backscattered from well above the snow-sea ice interface…”
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Multi-Year Sea Ice Conditions in the Northwest Passage: 1968-2020 by Howell, Stephen E.L., Babb, David G., Landy, Jack C., Brady, Mike

“…The Northwest Passage is often referred to as the "Holy Grail" of ship navigation as it provides a shorter route connecting the Atlantic and Pacific Oceans…”
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Faster decline and higher variability in the sea ice thickness of the marginal Arctic seas when accounting for dynamic snow cover by Mallett, Robbie D. C, Stroeve, Julienne C, Tsamados, Michel, Landy, Jack C, Willatt, Rosemary, Nandan, Vishnu, Liston, Glen E

“…Mean sea ice thickness is a sensitive indicator of Arctic climate change and is in long-term decline despite significant interannual variability. Current…”
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Evaluating Scattering Contributions to C-Band Radar Backscatter From Snow-Covered First-Year Sea Ice at the Winter-Spring Transition Through Measurement and Modeling by Komarov, Alexander S., Landy, Jack C., Komarov, Sergey A., Barber, David G.

“…In this paper, we present model and measurement results for time-series angular dependencies of C-band nn and VV normalized radar cross-sections (NRCS) over…”
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A Study on the C-Band Polarimetric Scattering and Physical Characteristics of Frost Flowers on Experimental Sea Ice by Isleifson, Dustin, Galley, Ryan James, Barber, David G., Landy, Jack C., Komarov, Alexander S., Shafai, Lotfollah

“…A focused study on the C-band polarimetric scattering and physical characteristics of frost-flower-covered sea ice was conducted at the Sea-Ice Environmental…”
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Sea ice transport and replenishment across and within the Canadian Arctic Archipelago, 2016–2022 by Howell, Stephen E. L, Babb, David G, Landy, Jack C, Glissenaar, Isolde A, McNeil, Kaitlin, Montpetit, Benoit, Brady, Mike

“…The Canadian Arctic Archipelago (CAA) serves as both a source and a sink for sea ice from the Arctic Ocean, while also exporting sea ice into Baffin Bay. We…”
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Improved Arctic Sea Ice Freeboard Retrieval From Satellite Altimetry Using Optimized Sea Surface Decorrelation Scales by Landy, Jack C., Bouffard, Jerome, Wilson, Chris, Rynders, Stefanie, Aksenov, Yevgeny, Tsamados, Michel

“…A growing number of studies are concluding that the resilience of the Arctic sea ice cover in a warming climate is essentially controlled by its thickness…”
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