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Stephen E. L. Howell
Environment Canada
78Publications
21H-index
1,206Citations
Publications 78
Newest
Published on Aug 19, 2019in Canadian Journal of Remote Sensing2.55
Silvie Cafarella (UVic: University of Victoria), Randall K. Scharien13
Estimated H-index: 13
(UVic: University of Victoria)
+ 4 AuthorsSasha Nasonova2
Estimated H-index: 2
(UVic: University of Victoria)
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...
Published on Aug 1, 2019in Remote Sensing of Environment8.22
Stephen E. L. Howell21
Estimated H-index: 21
,
David Small16
Estimated H-index: 16
+ 3 AuthorsMichael Brady2
Estimated H-index: 2
Abstract 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...
Published on Feb 18, 2019in Remote Sensing4.12
John J. Yackel20
Estimated H-index: 20
,
Torsten Geldsetzer12
Estimated H-index: 12
+ 4 AuthorsHoi Ming Lam
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.
Published on Dec 6, 2018in PLOS ONE2.78
Justin Murfitt1
Estimated H-index: 1
,
Laura C. Brown11
Estimated H-index: 11
,
Stephen E. L. Howell21
Estimated H-index: 21
Published on Nov 1, 2018in IEEE Transactions on Geoscience and Remote Sensing5.63
Mallik Sezan Mahmud5
Estimated H-index: 5
(U of C: University of Calgary),
Torsten Geldsetzer12
Estimated H-index: 12
(U of C: University of Calgary)
+ 3 AuthorsRandall K. Scharien13
Estimated H-index: 13
(UVic: University of Victoria)
Synthetic aperture radar (SAR) incidence angle has a significant effect on the microwave backscatter from sea ice. This paper investigates the incidence angle dependence of C- and L-band HH-polarized microwave backscatter coefficient over Arctic first-year sea ice (FYI) and multiyear sea ice (MYI) in winter. Advanced Land Observation Satellite Phased Array type L-band SAR (L-band) and RADARSAT-2 (C-band) images are used to derive ice type-specific incidence angle dependencies calculated using li...
Published on Oct 16, 2018in Remote Sensing4.12
Justin Murfitt1
Estimated H-index: 1
,
Laura C. Brown11
Estimated H-index: 11
,
Stephen E. L. Howell21
Estimated H-index: 21
Published on Jul 4, 2018in Canadian Journal of Remote Sensing2.55
Sasha Nasonova2
Estimated H-index: 2
(UVic: University of Victoria),
Randall K. Scharien13
Estimated H-index: 13
(UVic: University of Victoria)
+ 2 AuthorsDesmond Power7
Estimated H-index: 7
(St. John's University)
AbstractC-band synthetic aperture radar (SAR) is widely used for sea ice monitoring and operational activities. The RADARSAT Constellation Mission (RCM), with its anticipated launch in 2018, will provide hybrid compact polarimetric (CP) C-band SAR data offering near-polarimetric capabilities at large image acquisition widths suitable for achieving operational and scientific objectives in the Arctic. Although C-band SAR is effective for sea ice monitoring, it is difficult to implement during adva...
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