The graph below shows the daily sea ice extent. The solid blue line indicates the 2009 data; the dashed green line shows the data for 2007; and the solid gray line indicates average extent from 1979 to 2000.
During the 2007 melt season, arctic sea ice plummeted to the lowest levels since satellite measurements began in 1979. The average sea ice extent for September 2007 was only 4.28 million square kilometers (1.65 million square miles).
References:
National Snow and Ice Data Center - Press Release 1 October 2007
National Snow and Ice Data Center - Daily Images - 10 June 2009


Comments: 8
The long-term trend indicates a decline of 2.5% per decade, an average of 34,000 square kilometers (13,000 square miles) of ice per year.
Alarming news, thanks for sharing, Sam!
thanks for that, it does take some time to change the climate
It appears that climates can change quite rapidly, Richard.
When the climate warmed relatively quickly about 14,700 years ago, seasonal monsoons moved southward, dropping more rain on the Earth's oceans at the expense of tropical areas, according to climate research supported by the Nation Science Federation. This shift happened abruptly over a few decades. If the same pattern occurs in the coming decades as the Earth's temperatures rises due to climate change, the highly-populated regions of the world that depend on monsoons could face more wildfires, water shortages and lower agricultural production.
What they say fits what I am suggesting also, the global cooling won't be noticeable till the next twenty or so years is up, and the following 150 or so years we will probably see a 2C - 4C over-all drop in the world temp average. All because the orbit of Jupiter is pulling away from the sun and there will be less sunspots over-all.
Again, what you're suggesting doesn't make sense, Richard. The IPCC has included solar activity for years in its reports and the conclusion is that the impact of solar activity changes is small compared to antropogenic global warming.



On the left is a reconstruction of solar activity over the past 11,400 years, which doesn't indicate that we could expect dramatic falls in temperatures soon. So, unless you had some information that the rest of the world had somehow overlooked until now, I suggest that we stick to the IPCC conclusions that we need to act to avoid catastrophic climate change due to antropogenic global warming.
NASA measurements show that we're currently at the low point of number of solar cycles that combine to mask the full impact of global warming.
The sun hasn't been more quiet in terms of sunspots since 1913 and, as the above image shows, we're now at the low point of a sunspot cycle that returns every 11 year, as described in the NASA report Deep Solar Minimum. So, we can expect more sunspots over the next decade or so.
We're also at a 50-year low in solar wind pressure and at a low in solar radio emissions; radio telescopes are now recording the dimmest "radio sun" since 1955 (above image). Furthermore, we're at a 12-year low in solar irradiance or brightness (image below).
The image below charts the monthly October ice extent for 1979 to 2009, showing a decline of 5.9% per decade. — Credit: NSIDC.