Stephen E. L. Howell
Environment Canada
GeologySea iceArctic ice packClimatologyArctic
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Publications 85
#2Wolfgang RackH-Index: 15
Last. Stephen E. L. HowellH-Index: 22
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The Ross Sea region, including three main polynya areas in McMurdo Sound, Terra Nova Bay, and in front of the Ross Ice Shelf, has experienced a significant increase in sea ice extent in the first four decades of satellite observations. Here, we use Co-Registration of Optically Sensed Images and Correlation (COSI-Corr) to estimate 894 high-resolution sea ice motion fields of the Western Ross Sea in order to explore ice-atmosphere interactions based on sequential high-resolution Advanced Synthetic...
#1A. Cabaj (U of T: University of Toronto)H-Index: 1
#2Paul J. Kushner (U of T: University of Toronto)H-Index: 34
Last. Alek A. Petty (UMD: University of Maryland, College Park)H-Index: 10
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1 CitationsSource
#1Joshua KingH-Index: 7
Last. Justin M. Beckers (U of A: University of Alberta)H-Index: 3
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Abstract. 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 Arctic Ocean on both first (FYI) and multi-year (MYI) sea ice. Sites contained multiple snow pits with coincident SMP profiles as well as unidirectional SMP transects. An existing SMP density model was recalibrated using manual density cutter ...
Last. Rodrigue Beaini (École Polytechnique de Montréal)
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ABSTRACTA pan-Arctic sea-ice–ocean prediction system is assessed in terms of its ability to predict sea-ice velocity. This system is based on the Regional Ice Ocean Prediction System running operat...
1 CitationsSource
#2David Small (UZH: University of Zurich)H-Index: 16
Last. Michael BradyH-Index: 3
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Information on the timing of melt onset over sea ice is important for understanding the Arctic's changing climate. The daily temporal resolution of passive microwave brightness temperatures provides the most widely utilized observations to detect melt onset but are limited to a spatial resolution of 25 km. Wide-swath synthetic aperture radar (SAR) imagery provides a much higher spatial resolution (20–100 m) but melt onset detection remains challenging because of i) insufficient temporal resoluti...
2 CitationsSource
#1Silvie Marie Cafarella (UVic: University of Victoria)
#2Randall K. Scharien (UVic: University of Victoria)H-Index: 13
Last. Sasha Nasonova (UVic: University of Victoria)H-Index: 2
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AbstractUtilizing synthetic aperture radar (SAR) data to understand and map sea ice roughness is an active area of research. An object-based image analysis is here used to quantitatively link the w...
#1John J. YackelH-Index: 20
#2Torsten GeldsetzerH-Index: 5
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This research was funded by Canadian NSERC Discovery grants to John Yackel and Randy Scharien as well as Polar Continental Shelf Project and Polar Knowledge Canada support to C.J. Mundy, Brent Else, Randy Scharien and John Yackel. The APC was funded by Canadian NSERC Discovery grants to John Yackel.
#1Justin Murfitt (U of T: University of Toronto)H-Index: 2
#2Laura C. Brown (U of T: University of Toronto)H-Index: 11
Last. Stephen E. L. HowellH-Index: 22
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Lakes are a key geographical feature in Canada and have an impact on the regional climate. In the winter, they are important for recreational activities such as snowmobiling and ice fishing and act as part of an important supply route for northern communities. The ability to accurately report lake ice characteristics such as thickness is vital, however, it is underreported in Canada and there is a lack of lake ice thickness records for temperate latitude areas such as Central Ontario. Here, we e...
3 CitationsSource
#2David SmallH-Index: 16
Last. Michael BradyH-Index: 3
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