Science a GoGo's Home Page Forums General Discussion Climate Change Forum Has the Earth been cooling the past 10 years?

This statement or some variant of it has been repeated all over the net.

http://www.youtube.com/watch?v=xvMmPtEt8dc

TFF

the core is cooling or the heat generated by the core and the magma as the core spins and spins faster than the magma.

because there is less pressure placed on the core by the magma due to the melting ice caps.

more pressure = more heat.
less pressure = less heat.

less friction = less heat.

picture the earth and the core , the places where there is less friction between the core and the magma would be along the equator , this is due to centrifugal forces pushing the magma outwards and at the same time exerting less pressure on the core , the most pressure would be the north and south poles this is because the centrifugal forces are much less there so there is more pressure applied to the core by the magma creating more heat.

the pressure from the ice pushing downwards is decreasing so there is a corresponding decrease in the frictional heat produced at the cores north and south poles.

eventually as this pressure continues to decrease Im
affraid that the core will experience more and more friction along the equator and its speed will greatly decrease.

that could probably take millions of years but the transitional effects could begin at any time if they havent already.

anyway to get back to it , it takes a long time for this cooling to get back to us.

but the atmosphere is still warming up due to global warming.

the weather shows the warming more than anything right now.

the unusual amounts of rain show the warming , as I said here before we will be experiencing shorter colder winters and longer hotter summers.

I think people are too worried about that sort of thing. The fact is we already have severe changes in the weather from season to season in most of the world. I recently lived in a city which was so cold in the winter that 150 years ago, the natives didn't live there. It only became inhabitable with the advent of more modern building materials and heating.

And see how people happily survive in the excessively hot and humid Singapore, the very cold winters of Beijing or the dangerously hot Dubai.

Weather, or climate, are just a small part of the planetary heat transfer system.

It shouldn't be surprising that "cooling," or a leveling off of the rapid warming of the 80's and 90's, is occurring at the same time that ice melting has been accelerating.

Look up the "heat of fusion" for water and think about the difference between heat and temperature, and you'll see why melting ice absorbs enough "heat" to keep the atmospheric temperature "leveled off" for a few years. But the planetary system as a whole is still gaining lots of extra heat.

Add extra energy (heat) to any complex dissipative system (like climate) and it well eventually reorganize into another mode.

~But "eventually" is another discussion....

Hey Samwik

your right about heat transfering into the water as the ice melts.
nice point and a little more info , 1 cu meter of water
can store 334 MJ / 317,000 BTU's / 93,000 Wh's
of energy.


http://en.wikipedia.org/wiki/Thermal_energy_storage

The guy here seems to agree with you that warming has slowed, but that it's not surprising....

Sun sets on climate change get out clause

Looks like this year could buck that recent cooling trend - April and January-April 2010 are the warmest on record, it says halfway down this post.

I'm surprized the posters here didn't already address this - the claim that the earth has cooled in the past 10 years is totally false. In fact, all ten years of the past decade are among the warmest years on record; and all but one of those are in the top 10.

You can make a bit of an argument using 2005 - the hottest year on record - as your start point. The overall trend is very slightly downwards as you advance towards today.

However, that is misleading - no climatologist on earth expects warming to occur in a perfectly linear fashion, year-to-year variations are both what are expected, and what has occurred historically. Various events - changes in solar intensity, particulates from volcanoes, etc - all act to add noise to the system.

Hence, to see what is really happening you need to look at long-term trends; decades or longer. When you do this the results are clear - we are still warming. The 1990's are warmer than the 80's, the 2000's warmer than the 90's. Within any of those decades the year-to-year noise hides that trend, but its clear what is happening in the long run.

I'm actually curious to see what thappens this year - the iceland volcano spewed a lot of ash into the atmosphere, which should cool things off. But despite that we've had record highs all over the world...

Bryan

The claim that the earth has cooled in the past 10 years is totally false.

Yet that is what the regular posters on this site want you to believe!!!!

Of course, excepting one or two, like ImagingGeek.

The last 16 years include the 15 HOTTEST years.



So the 15 hottest years (on record) occurred in the last 16 years;

but some morons still claim that global warming is a hoax.

If you include 2011 (which was apparently the tenth warmest year on record) you can say that the last 17 years, include the 16 hottest years on record.

But remember, according to some, global warming is not, and never will be, a problem.

Here are the anomalies in an easy to copy format:

         The last 16 years include the 15 hottest years on record.

     Overall Temperatures   Land Temperatures      Ocean Temperatures

        Year    Anomaly        Year    Anomaly        Year    Anomaly

     1  2010    +0.6441     1  2007    +1.0524     1  2003    +0.5175
     2  2005    +0.6401     2  2010    +1.0314     2  1998    +0.5136
     3  1998    +0.6212     3  2005    +1.0154     3  2010    +0.4987
     4  2003    +0.6066     4  1998    +0.9005     4  2005    +0.4973
     5  2002    +0.5970     5  2002    +0.8857     5  2009    +0.4920
     6  2006    +0.5859     6  2006    +0.8769     6  2002    +0.4871
     7  2009    +0.5835     7  2003    +0.8385     7  2004    +0.4851
     8  2007    +0.5780     8  2009    +0.8269     8  2006    +0.4752
     9  2004    +0.5648     9  2008    +0.8196     9  1997    +0.4553
    10  2001    +0.5372    10  2004    +0.7747    10  2001    +0.4465
    11  1997    +0.5070    11  2001    +0.7721    11  2007    +0.4006
    12  2008    +0.5009    12  1995    +0.7296    12  2008    +0.3808
    13  1995    +0.4382    13  1999    +0.7237    13  2000    +0.3499
    14  1999    +0.4380    14  1997    +0.6412    14  1990    +0.3299
    15  2000    +0.4151    15  2000    +0.5830    15  1999    +0.3285

The anomalies measure the difference from the 20th century average (1901-2000).

http://www.ncdc.noaa.gov/cmb-faq/anomalies.php