This is really quite striking... 
Melt ponds are visible on satellite (blue shading) across much of the landfast sea ice along Siberia; e.g., in this image above the Lena River Delta.
[Satellite from 6 June 2021 using Sentinel-2; apps.sentinel-hub.com/sentinel-playg…]
[Satellite from 6 June 2021 using Sentinel-2; apps.sentinel-hub.com/sentinel-playg…]
Last month observed temperatures more than 5°C above average across almost the entire Siberian #Arctic... 🔥
[Data from @CopernicusECMWF ERA5]
[Data from @CopernicusECMWF ERA5]
Contributing to the early melt-out is likely a lack of snow cover...
Eurasian snow extent was well below average in May 2021 (top 5 lowest on record).
[Data/graph from climate.rutgers.edu/snowcover/]
Eurasian snow extent was well below average in May 2021 (top 5 lowest on record).
[Data/graph from climate.rutgers.edu/snowcover/]
Comparing 2021 to last year's anomalous sea ice extent in the Laptev Sea (located in the Siberian #Arctic)...
[*Note that the basin is geographically constrained (same maximum sea ice cover = flat line in winter)]
[*Note that the basin is geographically constrained (same maximum sea ice cover = flat line in winter)]
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