ATTENTION: new polls in the right hand bar, closing July 31st.
With the release of the July SIO report I also release the results of the two ASI blog polls in the right hand bar, that closed on June 30th. First off the poll for the NSIDC minimum monthly/September sea ice extent that received 271 votes. The average* of all votes was 4.29 million square km.
These are the NSIDC September monthly average minimums in the 2005-2011 period:
- 2005: 5.57 million square km
- 2006: 5.92 million square km
- 2007: 4.30 million square km
- 2008: 4.73 million square km
- 2009: 5.39 million square km
- 2010: 4.93 million square km
- 2011: 4.61 million square km
These are the Croysphere Today daily minimums in the 2005-2011 period:
- 2005: 4.09 million square km
- 2006: 4.03 million square km
- 2007: 2.92 million square km
- 2008: 3.00 million square km
- 2009: 3.42 million square km
- 2010: 3.07 million square km
- 2011: 2.90 million square km
I voted 'between 3.0 and 3.2 million km2' for the CT SIA daily minimum, and 'between 4.25 and 4.5 million km2' for the NSIDC monthly minimum.
There are new polls in the right hand bar, that will close on July 31st. If you want, you can re-vote by going to the polls directly (here for NSIDC minimum monthly SIE, and here for CT minimum daily SIA). For an explanation of the differences between the polls, go to this blog post.
* This is my complex method for processing the poll results and calculating the average:
I've calculated the number by multiplying the percentage number with the average of an option. For instance 'between 4.0 and 4.2 million' = 4.1, and for 'less than 2.8 million km2' I've used 2.7 million km2. I've added up all multiplications and divided the result by 100.