Try reading sometime. Like here
See?
(tl;dr - complicated NH monthly mean data and shit like that)
Why is it important to look at long term data? Long trends? Because CO2 theory (AGW) predicts an increase in the heat energy of the atmosphere and oceans. This is, in the simplest form, the global warming theory based on an increase of CO2.
How can we know if that theorized event has happened? By checking the data. I will now show you, very simply, why the CO2 theory has been proven wrong, in an easy to understand way. (there will be no skepticalscience link fro GIGOGallop to counter this, as they don’t even know about this)
Here is the global anomaly for January, since 1940.
http://woodfortrees.org/plot/hadcrut3gl/from:1940/every:12
That is the coldest month in the NH, which theory predicts will show the most warming from CO2. This is an absolute prediction of CO2 theory. This is due to the nature of CO2 warming, it’s physics.
The raw data shows the problem very clearly.
1942 0.215 - this was the warmest winter in that period, though several others were quite close. Wood for Trees: Interactive Graphs
With
1958 0.224
but it wouldn’t be fair to use the highest value, 1942 will work just fine. Remember these numbers represent the global average above the global mean using the period Jan 1961 - Dec 1990 (30 years)
http://www.cru.uea.ac.uk/cru/data/temperature/
So there is the January anomaly, it represents the global heat balance.
1942 0.215
We see the cooling period until 1976, followed by warming.
1976 -0.266
1977 -0.134
1978 0.014
1979 -0.029
1980 0.106
1981 0.26
1982 -0.028
1983 0.386
1984 0.088
1985 0.019
1986 0.115
1987 0.118
1988 0.348
1989 -0.002
1990 0.198
1991 0.229
1992 0.282
1993 0.217
1994 0.157
1995 0.359
1996 0.065
1997 0.15
1998 0.492
1999 0.37
2000 0.206
2001 0.324
2002 0.598
2003 0.525
2004 0.504
2005 0.461
2006 0.319
2007 0.61
2008 0.053
2009 0.387
2010 0.489
2011 0.194
2012 0.206
2013 0.39
1942 0.215
Right there you can see, in black and white, what the graph clearly shows. The heat balance change for January, in the last 70 years.
The astute observer might say, it’s not fair to use the global average in regards to NH winters, and you would be correct. Since the SH hasn’t warmed like the NH, we should look at just NH winters.
Here is the warm period (before current warming)
http://woodfortrees.org/plot/hadcrut3nh/from:1930/every:12/to:1960
Note the warm winter of
1958 0.487
but that winter of 42 is now not that high. But 44 sure as hell is.
1944 0.572
When comparing the NH heat balance of then to now, it’s quite fair to look at the difference. The warmists will of course cry foul, and want the coldest periods then compared to the warmist year now.
But that isn’t how heat balance works. If the heat balance in 44 was 0.572, then in 58 0.487, you have to look at how much heat has accumulated since then.
1944 0.572
1945 -0.045
1946 0.273
1947 -0.349
1948 0.305
1949 0.256
1950 -0.541
1951 -0.366
1952 0.176
1953 0.127
1954 -0.351
1955 0.241
1956 -0.163
1957 -0.285
1958 0.487
1959 0.174
1960 -0.036
1961 0.131
1962 0.173
1963 0.056
1964 0.066
1965 -0.104
1966 -0.094
1967 -0.172
1968 -0.304
1969 -0.544
1970 -0.014
1971 -0.019
1972 -0.676
1973 0.069
1974 -0.471
1975 0.064
1976 -0.073
1977 -0.436
1978 0.088
1979 -0.08
1980 0.068
1981 0.507
1982 -0.131
1983 0.44
1984 0.116
1985 -0.064
1986 0.238
1987 0.097
1988 0.384
1989 -0.032
1990 0.248
1991 0.337
1992 0.436
1993 0.268
1994 0.217
1995 0.536
1996 0.07
1997 0.232
1998 0.499
1999 0.47
2000 0.272
2001 0.376
2002 0.773
2003 0.611
2004 0.649
2005 0.589
2006 0.317
2007 0.924
2008 0.053
2009 0.495
2010 0.531
2011 0.142
2012 0.297
1944 0.572
There is your global warming in the last 69 years.
http://www.cru.uea.ac.uk/cru/data/temperature/
You can use other data sets, maybe the well liked CRUtemp4 (which shows the past as cooler)
http://www.metoffice.gov.uk/hadobs/hadcrut4/data/download.html
1944 0.656
2012 0.453
There is the current accumulated heat in the last 68 years. Comparing the NH winter heat balance.
That is global warming.
Haha of course that is completely unfair. We need to compare more average winter anomalies.
2008 0.216
1946 0.292
Actually the whole point is why averages matter. And why using the short time period since the last cool period is bullshit for showing drastic warming.
Comparing 1932 with
1932 0.376
2011 0.332
(Hadcrut4)
or using Hasdcrut3 to compare
1932 0.326
2012 0.314
makes it seem like there has been no gain in heat for 80 years. When it just means there was no increase in the heat balance between those years.
The real global warming shows up in spring and summer. And make no mistake, there is warming.
here is summer (June) anomalies
1932.5 -0.037
2012.5 0.675
No doubt if you look at NH summers, there has been a lot of warming. The thing is, that isn’t what CO2 theory predicted, predicts, or explains.
Which is why GIGO and company are so funny. They don’t know this. Neither does SS.
So why is there such alarm in some minds? They take the coldest temperatures, like winter 72, and compare it to the hottest summer temperatures.
1972 -0.639
2007 0.904
Which obviously shows almost 1.5 degrees warming. In a very short time. Everybody panic.
If you did that trick, took the warmest reading in the 40s and compared it to the coldest in 2008, you could show global cooling instead.
1944 0.552
2008 0.084
http://www.cru.uea.ac.uk/cru/data/temperature/
But that is a bullshit trick.
The thing to take away is that if you compare the heat balance now with then, there hasn’t been much CO2 warming at all. This does not mean no warming, but it certainly means the theory is wrong.
Not that CO2 doesn’t act as a greenhouse gas, that isn’t what is wrong.
It’s the predictions of how we will see warming based on that forcing. That is what is obviously wrong. We will get to why in another post.