![]() Overall, the Arctic lost 452,000 square kilometers (175,000 square miles) of ice from May 24 to May 31, compared the 1981 to 2010 average of 279,000 square kilometers (108,000 square miles) during the same interval. However, during the last week of the month, the rate of ice loss increased. From May 1 to May 24, extent dropped 963,000 square kilometers (372,000 square miles), compared to 1.12 million square kilometers (432,000 square miles) over the same interval in the 1981 to 2010 average. ![]() Through much of May, extent declined slightly slower than the 1981 to 2010 average (Figure 1b). ![]() The average extent was 460,000 square kilometers (178,000 square miles) below the 1981 to 2010 average and 910,000 square kilometers (351,000 square miles) above the record low May extent, which occurred in 2016. Sea Ice Index data.Ĭredit: National Snow and Ice Data CenterĪverage Arctic sea ice extent during May 2023 was 12.83 million square kilometers (4.95 million square miles) (Figure 1a), the thirteenth lowest May in the satellite record. The gray areas around the median line show the interquartile and interdecile ranges of the data. 2023 is shown in blue, 2022 in green, 2021 in orange, 2020 in brown, 2019 in magenta, and 2012 in dashed brown. The graph above shows Arctic sea ice extent as of June 4, 2023, along with daily ice extent data for four previous years and the record low year. CDC’s recommendations for use of (monovalent) Novavax or Johnson & Johnson’s Janssen COVID-19 vaccines were not affected by the changes made today.ĬDC and ACIP will continue to monitor COVID-19 disease levels and vaccine effectiveness in the months ahead and look forward to additional discussion around potential updates this fall.Figure 1b.
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