@article{komarov_role_2026,
	title = {The role of cross-polarization in producing high-resolution pan-Arctic sea ice motion from the {RADARSAT} Constellation Mission over several years},
	volume = {334},
	issn = {0034-4257},
	url = {https://www.sciencedirect.com/science/article/pii/S0034425725005796},
	doi = {https://doi.org/10.1016/j.rse.2025.115175},
	abstract = {We introduce a new pan-Arctic Environment and Climate Change Canada ({ECCC}) {HIgh}-Resolution sea Ice Tracking System ({HIRITS}) operating with the {RADARSAT} Constellation Mission ({RCM}) {HH} and {HV} synthetic aperture radar ({SAR}) images resampled at a resolution of 80 m. The spacing between neighbour output vectors was often around 1 km. When combining {HH} and {HV}, the resulting ice displacements (over 2 h to 3.5 days) derived for June 1, 2022 – May 31, 2025 were in an excellent agreement with International Arctic Buoy Programme data with the overall root-mean square error ({RMSE}) of 1.48 km, and correlation of 0.996 for the x and y components. Ice motion vectors provided by {HV} had consistently greater tracking cross-correlation coefficients (with the average value of 0.56) than those derived from {HH} (average value of 0.45), implying a higher confidence. The {RCM} {HH} + {HV} ice motion agreed well with the existing passive microwave products from the National Snow and Ice Data Center ({NSIDC}) and Ocean and Sea Ice Satellite Application Facility ({OSI} {SAF}) with {RMSEs} of 4.19 km/d and 5.03 km/d respectively. We introduced an aggregated sea ice motion pan-Arctic gridded product at 2 km resolution that combines individual {RCM} ice motion products ({HH} and {HV}) derived over 3- and 7-day rolling time windows. A greater number of vectors was derived from {HV} compared to {HH} across the pan-Arctic domain, except for the situations where the {HV} signal is low, such as over smooth land fast ice. The new {RCM} {HH} + {HV} products generated since mid-May 2022 will substantially benefit various applications that require sea ice motion at high spatial resolution including accurate computation of sea ice deformation.},
	pages = {115175},
	journaltitle = {Remote Sensing of Environment},
	author = {Komarov, Alexander S. and Plante, Mathieu and Lemieux, Jean-François and Howell, Stephen E. L. and Brady, Mike},
	date = {2026-03-31},
	keywords = {Arctic, Cross-polarization ({HV}) added value, {HIgh}-Resolution Ice Tracking System ({HIRITS}), {RADARSAT} Constellation Mission ({RCM}), Sea ice motion, Synthetic aperture radar ({SAR})},
}