Skip to comments.IJIS-JAXA Crazy Arctic Ice Data
Posted on 10/18/2013 12:53:06 PM PDT by UnbelievingScumOnTheOtherSide
I frequently have a look at the daily arctic ice map at
Sometimes I find mistakes and get them to make corrections like these:
May 2013 was the tenth lowest May in the satellite record, 390,000 square kilometers (151,000 square miles) above the record low of 12.58 million square kilometers (4.86 million square kilometers) in 2004.* *Note: We originally stated that the record low had occurred in May 2011. After reviewing the data, we corrected this statement. See the Sea Ice Index for data on past May ice extent. (It was obvious from the graph.)
* Note: On September 19, 2013, we revised a sentence in this section for clarity. A sentence that originally read, In contrast, this years Arctic summer minimum ice extent is approximately 30% below the 30-year period average, and the 2012 record low extent was nearly 60% below the average. now reads, In contrast, this years Arctic summer minimum ice extent is approximately 30% below levels seen in the early 1980s, and the 2012 record low extent was around 60% below levels seen in the same period. (I had sent them calculations showing that the correct 30-year 1980-2010 figures should have been only 18% and 45%, respectively.)
I have come to your site because Sea Ice News is not updating since the US government shutdown.
Right away, I found something that looks really, frankly, crazy here:
On Oct. 18, 2013, I turned on the 1980s, 1990s and 2000s average overlays. Then I started going backwards day by day.
Can you possibly explain why the average extent lines grow on even numbered days and shrink on odd numbered days? I'm sorry but I don't believe that is natural behavior for either the ice sheet or the satellite instrumentation. It makes the whole thing look questionable.
I should also note that the fall arctic freezup is progressing unusually fast so far compared to any single year or long term average.
self-ping for future reference.
Can’t wait to see you post the response.
“Can you possibly explain why the average extent lines grow on even numbered days and shrink on odd numbered days?”
It might depend on when the satellite takes its measurements.
Send an msg to Anthony Watts:
That's an easy one. Mother Gaia inhales and exhales on a 48 hour cycle. After all, you have to believe in Gaia to accept global warming on faith.