Landfast ice properties over the Beaufort Sea region in 2000–2019 from MODIS and Canadian Ice Service data

Two decades (2000–2019) of the landfast ice properties in Beaufort Sea region Canadian Arctic were analyzed at 250 m spatial resolution from two sources: (1) monthly maps derived Canada Centre for Remote Sensing Moderate Resolution Imaging Spectroradiometer clear-sky satellite image composites; and (2) Ice Service charts. Detailed comparisons have been conducted extent, water depth at, distance to outer seaward edge coast four sub-regions: Alaska coast; Barter Island Herschel Island; (3) Mackenzie Bay; (4) Richards Cape Bathurst. The results both sources demonstrate good agreement. average extent entire over April–June period is 48.5 (±5.0) × 10 3 km 2 data versus 45.1 (±6.1) used this study (7.0% difference). correlation coefficient 0.73 (p = 2.91 ?4 ). long-term linear trends since 2000 demonstrated statistically significant decline: ?4.45 (±1.69) /decade ?4.73 (±2.17) data, respectively. showed general tendency an earlier break-up, later onset, longer ice-free period. break-up date has decreased by 7.6 days/decade Bay region. western part area did not changes 2000.