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TitleMinimum snow/ice extent over the northern circumpolar landmass in 2000-19: how much snow survives the summer melt?
 
AuthorTrishchenko, A PORCID logo; Ungureanu, C
SourceBulletin of the American Meteorological Society vol. 102, issue 4, 2021 p. E748-E764, https://doi.org/10.1175/BAMS-D-20-0177.1 Open
Access logo Open Access
Image
Year2021
Alt SeriesNatural Resources Canada, Contribution Series 20200561
PublisherAmerican Meteorological Society
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceAlberta; British Columbia; Newfoundland and Labrador; Northwest Territories; Nunavut; Quebec; Saskatchewan; Yukon; British Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut
NTS1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
AreaNorthern Hemisphere
Lat/Long WENS-180.0000 180.0000 90.0000 20.0000
Subjectsgeophysics; Science and Technology; Nature and Environment; snow; ice; glaciers; remote sensing; satellite imagery; temperature; statistical analyses; mapping techniques; climate effects; climate, arctic; Moderate Resolution Imaging Spectroradiometer (MODIS); European Reanalysis (ERA5); Randolph Glacier Inventory (RGI 6.0); methodology; image processing; trends; climate change; cumulative effects
Illustrationstime series; geoscientific sketch maps; satellite images; tables; plots
ProgramCanada Centre for Remote Sensing, Optical methods and applications
ProgramClimate Change Geoscience
Released2021 04 16
AbstractA novel satellite image processing technique developed at the Canada Centre for Remote Sensing has been utilized to produce annual time series of the minimum snow/ice (MSI) extent over the northern circumpolar landmass area (9,000 km × 9,000 km) for 2000-19. The information has been derived from the Moderate Resolution Imaging Spectroradiometer 10-day clear-sky composites generated at 250-m spatial resolution over the April-September period. Derived interannual variations agree very well with the warm-season average surface air temperatures from the European reanalysis (ERA5). The region-average correlation coefficient is -0.78. The total MSI extent demonstrated a statistically significant declining trend equal to -1,477 km2/yr. Results have been compared with data from the Randolph Glacier Inventory (RGI 6.0). The comparison points to a significant contribution of minimum seasonal snow cover relative to RGI glacierized areas. Quantitative estimates obtained for the first time showed that the region-average snow extent that survives the summer melt and resides outside of RGI area can be as high as 15% (or 53 × 10000 km2) while in the northern Canadian Arctic it can reach 41% (or 43 × 10000 km2). The derived MSI time series data can be recommended to the glacier and land-cover scientific community as a source of validation data and annual updates of snow and ice maps over the northern circumpolar landmass.
Summary(Plain Language Summary, not published)
For the first time, time series of annual minimum snow / ice extent over the Northern landmass have been derived and used to assess the snow extent that survives the summer melt.
GEOSCAN ID327791

 
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