April 7, 2022 - Sea Ice off Russia

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Sea ice and snow dominated the landscape of Russia’s Far East in early
April 2022. The Moderate Resolution Imaging Spectroradiometer (MODIS)
on board NASA’s Terra satellite acquired a true-color image of the
early spring scene on April 2.

In the north, fast ice clings to the coast of Khabarovsk Krai in many
locations, but large fractures can also be seen near the coastline and
across the northern reach of the Strait of Tartary. Further north, the
sea ice over the Sea of Okhotsk shows many fractures, both large and
small—a sure sign that melting is well underway. A large river of sea
ice sits off the east coast of Sakhalin Island. On the eastern side,
this sea ice thins and curls into delicate-appearing filigrees while
the southern end of the river of ice expands into eddies and swirls.
This dense collection of ice sits above the East Sakhalin Current,
which runs towards Japan’s Hokkaido Island. The current, which
typically begins to wane in April, typically carries winter’s ice
towards northern Japan. A swirl of floating sea ice sits in the
southern Tartary Strait between Sakhalin Island and mainland Russia.
The northern portion of the Tartary Strait appears to remain solidly
frozen, with few fissures or cracks visible.

Warming temperatures and lengthening daylight usually cause sea ice to
begin to melt rapidly over the Sea of Okhotsk during the month of
April. However, according to the National Snow and Ice Data Center
(NSIDC), the sea ice extent was below average in the Sea of Okhotsk
through the months of February and March 2022. Indeed, on April 5, the
NSIDC reported, “Average Arctic sea ice extent for March 2022 was 14.59
million square kilometers (5.63 million square miles), ranking ninth
lowest in the satellite record...The 2022 March extent was 840,000
square kilometers (324,000 square miles) below the 1981 to 2010
average. While extent tracked below the interdecile range of the
satellite record throughout the entire month, the total decline, after
a series of small ups and downs, was only 250,000 square kilometers
(96,500 square miles).”

Image Facts
Satellite: Terra
Date Acquired: 4/2/2022
Resolutions: 1km (369 KB), 500m (1.2 MB), 250m (3.6 MB)
Bands Used: 1,4,3
Image Credit: MODIS Land Rapid Response Team, NASA GSFC



https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2022-04-07

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