Connect with us

Hi, what are you looking for?

CleanTechnica
The Arctic sea ice appeared to have reached its likely maximum extent for the year on March 13, according to the National Snow & Ice Data Center, and in doing so tied for the seventh-lowest in the 40-year satellite record.

Climate Change

Arctic Sea Ice Ties For Seventh-Lowest Maximum

The Arctic sea ice appeared to have reached its likely maximum extent for the year on March 13, according to the National Snow & Ice Data Center, and in doing so tied for the seventh-lowest in the 40-year satellite record.

The Arctic sea ice appeared to have reached its likely maximum extent for the year on March 13, according to the National Snow & Ice Data Center, and in doing so tied for the seventh-lowest in the 40-year satellite record.

Arctic National Wildlife RefugeThe United States’ National Snow & Ice Data Center (NSIDC), part of the University of Colorado Boulder Cooperative Institute for Research in Environmental Sciences (CIRES), monitors Arctic and Antarctic sea ice in near real-time and is one of the world’s leading authorities on the history and science of how climate change is impacting our planet’s icy poles.

According to NSIDC’s most recent update, published on Wednesday, Arctic sea ice appears to have reached its annual maximum extent on March 13 at 14.78 million square kilometers (5.71 million square miles). The “maximum extent” of the Arctic’s and Antarctic’s sea ice refers to the area of ocean where there is at least some sea ice, measured therefore in square kilometres (and not an as-the-crow-flies measurement from some arbitrary middle). “Usually, scientists define a threshold of minimum concentration to mark the ice edge; the most common cutoff is at 15%,” explains NSIDC. “Scientists use the 15% cutoff because it provides the most consistent agreement between satellite and ground observations.”

This is the seventh-lowest maximum in the 40-year satellite record, tying with 2007’s maximum extent, and 860,000 square kilometers (332,000 square miles) below the 1981-2010 average maximum of 15.64 million square kilometers (6.04 million square miles) and 370,000 square kilometers (143,000 square miles) above the lowest maximum of 14.41 million square kilometers (5.56 million square miles) set on March 7, 2017.

Ten lowest maximum Arctic sea ice extents (satellite record, 1979 to present)

Rank Year In millions of square kilometers In millions of square miles Date
1 2017 14.41 5.56 March 7
2 2018 14.48 5.59 March 17
3 2016
2015
14.51
14.52
5.60
5.61
March 23
February 25
5 2011
2006
14.67
14.68
5.66
5.67
March 9
March 12
7 2007
2019
14.77
14.78
5.70
5.71
March 12
March 13
9 2005
2014
14.95
14.96
5.77
5.78
March 12
March 21

It is worth noting that at the moment, this is a preliminary assessment pending a final analysis which will be conducted at the beginning of April by NSIDC scientists.

 
Appreciate CleanTechnica’s originality? Consider becoming a CleanTechnica Member, Supporter, Technician, or Ambassador — or a patron on Patreon.
 
 

Advertisement
 
Have a tip for CleanTechnica, want to advertise, or want to suggest a guest for our CleanTech Talk podcast? Contact us here.

Written By

I'm a Christian, a nerd, a geek, and I believe that we're pretty quickly directing planet-Earth into hell in a handbasket! I also write for Fantasy Book Review (.co.uk), and can be found writing articles for a variety of other sites. Check me out at about.me for more.

Comments

You May Also Like

Climate Change

Originally published By Union of Concerned Scientists, The Equation. By Joel Clement  If there is one part of the world where science must inform...

Climate Change

Originally published by NOAA Climate.gov The first month of Northern Hemisphere spring 2021 was warmer than average across the globe according to the global...

Air Quality

By most accounts, 2020 has been a rough year for the planet. It was the warmest year on record, just barely exceeding the record set...

Climate Change

The Arctic Report Card is an annual compilation of original, peer-reviewed environmental observations and analyses of a region undergoing rapid and dramatic alterations to...

Copyright © 2021 CleanTechnica. The content produced by this site is for entertainment purposes only. Opinions and comments published on this site may not be sanctioned by and do not necessarily represent the views of CleanTechnica, its owners, sponsors, affiliates, or subsidiaries.