2022 Arctic summer sea ice tied for 10th-lowest on record
This visualization of sea ice change in the Arctic uses data provided by the Japan Aerospace Exploration Agency’s Global Change Observation Mission 1st-Water “SHIZUKU” satellite, which is part of a NASA-led partnership to operate several Earth-observing satellites. Credit: NASA’s Scientific Visualization Studio This image visualizes sea ice changein the Arctic using data provided by the Japan Aerospace Exploration Agency’s Global Change Observation Mission 1st-Water “SHIZUKU” satellite, which is part of a NASA-led partnership to operate several Earth-observing satellites. The visualization can be accessed at https://svs.gsfc.nasa.gov/5030. Credit: NASA’s Scientific Visualization Studio.

According to satellite observations, Arctic sea ice reached its annual minimum extent on Sept. 18, 2022. The ice cover shrank to an area of 4.67 million square kilometers (1.80 million square miles) this year, roughly 1.55 million square kilometers (598,000 square miles) below the 1981-2010 average minimum of 6.22 million square kilometers (2.40 million square miles).

Summer ice extent in and around the Arctic Ocean has declined significantly since satellites began measuring it consistently in 1978. The past 16 years (2007 to 2022) have been the lowest 16 minimum extents, with 2022 tying 2017 and 2018 for 10th-lowest in 44 years of observations. The satellite record is maintained by the National Snow and Ice Data Center (NSIDC), which hosts one of NASA’s Distributed Active Archive Centers.

“This year marks a continuation of the much-reduced sea ice cover since the 1980s,” said Walt Meier, a sea ice researcher at the National Snow and Ice Data Center. “That is not something that is random variations or chance. It represents a fundamental change in the ice cover in response to warming temperatures.”

Each year, Arctic sea ice melts through the warmer spring and summer months and usually reaches its minimum extent in September. As cooler weather and winter darkness sets in, the ice will grow again and reach its maximum extent around March.

Sea ice extent is defined as the total area in which ice concentration is at least 15%. This visualization, created at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, shows fluctuations in Arctic sea ice extent from March through September 2022. The map is based on data acquired by the Advanced Microwave Scanning Radiometer 2 (AMSR2) instrument on the Japan Aerospace Exploration Agency’s Global Change Observation Mission 1st-Water “SHIZUKU” (GCOM-W1) satellite.


This visualization of sea ice change in the Arctic uses data provided by the Japan Aerospace Exploration Agency’s Global Change Observation Mission 1st-Water “SHIZUKU” satellite, which is part of a NASA-led partnership to operate several Earth-observing satellites. Credit: NASA’s Scientific Visualization Studio Provided by NASA Citation: 2022 Arctic summer sea ice tied for 10th-lowest on record (2022, September 22) retrieved 22 September 2022 from https://phys.org/news/2022-09-arctic-summer-sea-ice-tied.html This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.

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