Arctic Sea Ice Extent Update – June, 17, 2010: Update 2

See my Arctic Update Page for daily updates on Arctic Sea Ice Extent

We are at the half way point in June, 2010 and the Arctic Sea Ice Extent is melting at a record-breaking pace. Please note I have adjusted my post based on JAXA’s 6/15/10 data update.

I have added a new page – Arctic Update where I will regularly have the latest JAXA day of year chart, my month to date data table and my month to date Sea Ice Extent chart. 6/17/10

Here’s the JAXA day-of-year chart which clearly shows how ASIE has dropped dramatically in May and so far in June. The mid June levels are the lowest in JAXA’s 2003-2010 period.

Here’s my JAXA data trend chart which shows the daily June values for each year. The blue dots reflect the daily values and the red dots reflect the ASIE values for the latest data date for each year. The green line is intended to assist reader in comparing the same values for the same data in each year.

Clearly the June 2010 ASIE is dropping rapidly, with the 6/15/2010 value significantly less than the values on this data in previous years.

This table provides additional information on the magnitude of the June ASIE decrease.

June, 2010 started at the lowest point in the 2003-2010 period, 32,000 km^2 less than the previous June 1 low in 2003.  So far in the first half of June, 2010, ASIE has decreased 0.898 million km^2, beating the previous full June record of 0.797 million km^2.  The mid June 2010 rate of  decrease has been 60,000 million km^2 per day, considerably greater than the previous maximum mid June rate of 53,000  in 2008. (Corrected 7/7/10 based on Derek McCreadie comment)

Details on my RClimate script are available in this previous post.

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2 responses to “Arctic Sea Ice Extent Update – June, 17, 2010: Update 2

  1. Derek McCreadie

    Hi, in the above graph of ‘Sea Ice Extent Update as of 15/06/2010 millions of kn2′ the average change per day is half a month based on all years ice losses. The article states “So far in the first half of June, 2010, ASIE has decreased 0.898 million km^2, beating the previous full June record of 0.797 million km^2.” This ‘-0.797′ figure is based on only 15 days worth surely as the average is given as ‘-0.053’? Or have the average rates of change been worked out wrongly using 15 days instead of 30 days for past years? Thanks for your help in clearing this up.

    • Derek

      Thanks for checking my write-up. You are correct, I’ve revised my statement.

      Thanks again. .. kelly

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