Global Warming Theorists Q#1: Why Did Temps Drop When CO2 Increased?
Scientific data shows that less sun was reaching the earth (solar variability) in the 1950's.
Also, NASA shows the temperature of the earth only increased 0.65 of a degree in the last 110 years.
http://www.nasa.gov/images/content/10776...
Answer:
The mid-20th century cooling was primarily a result aerosols. Of these, the most significant are sulfate aerosols, which are primarily anthropogenic. This cooling has been well represented in recent climate models.
http://www.metoffice.gov.uk/research/had...
Further, there is always natural variability in weather data, especially when considering time periods of less than 30 years.
the co2 increase caused the earth to initally warm up and caused more evaporation in the ocean. in the process, more clouds were forming and reflected most of the sun light back to space and caused the earth to cool down a lil.
Don't confuse the GW theorists with the facts. It upsets them so much! God Bless you.
Um...Temperatures INCREASED when CO2 increased. You said so yourself..."NASA shows the temperature of the earth only increased 0.65 of a degree in the last 110 years." The overall trend has been an increase in average temperatures, with some areas experiencing more warming than others. It has been proven numerous times that CO2 is a gas that traps heat.
Because weather varies. Climate is a condition that drives the formation of ecosystems and geo-formations. When the ecosystem is irreversably altered or the geology is affected on a watershed scale, you're talking about climate. But heck, let's wait and see if it's really true. We're american's and we have plenty bottled water! F the rest of the world that depends on the "environment" for their livlihood, right?
Maybe the time scale you are using is too small.
Look at the first and second charts on the link below. They show the relationship between carbon dioxide in the air and temperature for long periods of time.
(Ignore the text on that page, it is a discussion about graphics quality.)
The correlation is very strong. As carbon dioxide goes up so does the temperature.
The chart is from Al Gore's talk so if you think he is credible you will believe it and if you think he is not then you will believe it is a trick.
Time will tell. On scientific matters I will believe scientists more than politicians and the latest UN reports included the work of thousands of scientists. They could all be wrong but for the last hundred years they've been right most of the time.
By the way, it's not expensive to buy carbon offsets to neutralize the carbon dioxide you create. $10 will offset the carbon dioxide a person creates with a 1500 mile plane trip. The second link below lets you calculate how much carbon you create and make a payment to a green energy project to offset it.
Cheap and simple solution.
Because there are natural variabilities in the climate. No scientist looks at a time-scale of 10 years and decides that the Earth is heating. You need to look at a huge time scale before you can state what's happening to climate.
It's like looking at 10 days in your school year to see if you have good attendance. If you were off 5 days out of the 10 because you were ill, your attendance would only be 50%, and poor. If these were your only days off in the year, your attendance is MUCH better than 50%. You need to take everything into consideration. And anyone with half a brain won't look at a couple of decades to decide what's been happening for the past couple of centuries.
I am going to have to correct you. The temperatures fell from 1940-1975. According to the co2 theory that should not have happened. We are not talking about a couple of year anomaly, we are talking about a 35 year drop.
But look at the correlation of sun spots and temperatures in the link below. It is much better.
http://www.geocraft.com/wvfossils/refere...
Regarding amimoms links. One graph shows that co2 actually lags temperature. In other words temperatures cause a change in co2 and not the other way round. Even global warming believers accept that. So that person, and Al Gore, is purposely misleading you. If they are lying about that what else of they lying about?
The second graph is Micheal Man's temperature reconstruction graph, that has been proved false.
http://www.john-daly.com/hockey/hockey.h...
Your point about global dimming is true. But consider the fact that global dimming works only to oppose the effect of global warming (ie, lower insolation = lower temperatures) -- this only serves to prove that global warming is actually taking place at a much higher rate than has been observed so far, just that the temperature rise has been offset by global dimming.
Your correlation between CO2 and temperature levels is actually the wrong way round - as much as it seems straighforward to directly correlate temperature increase as a result of CO2 levels increase, it is in fact higher temperatures that cause higher levels of CO2 in the atmosphere.
Taking a localized CO2 emissions chart (second link in the sources), you see yearly fluctuations in CO2 concentrations in the atmosphere. These measurment not only show an upward trend in CO2 levels, but in fact prove that the seasonal fluctuations in temperature (winter/summer) increase and decrease CO2 concentration accordingly - hence the spiked appearence of the graphs.
Not to say this is at all definite, but most climatologists believe that the effects of CO2 increase are just not large enough yet to show up clearly on the climatic record - so, not much answers here, but I hope it clarifies some issues.
But 0.65 degrees is pretty much
You can't tell anything looking at one year to the next. You need to look at the long term trend (graph cited below).
There was some leveling off (not a drop) in the 60s, due to particles of air pollution. That is now reduced due to the Clean Air Act.
But the data makes it clear that the problem now is mostly us:
http://www.globalwarmingart.com/wiki/ima...
It is good to see that someone is questioning the alarmists of global warming.
Sorry, I just relay don't know...hop u find out.
Cooldog08
Much of what you are discussing is a matter of temporal scale. Depending on the specific question we are interested in related to global warming (e.g. what is the big picture trend vs. what happened last year), we need to look at the appropriate scientific data. I show my students different graphs using the temperature and CO2 curves for the last few million years, the last hundreds of thousands of years, the last few thousant, the last few hundred, and the last few decades. The blips in the curves are easily explained by the science when the temporal scales are kept in mind and when we can more accurately discuss mechanism.
Read the 4th Assessement report by the IPCC. This is the STATE OF THE SCIENCE, presented simply as a "Summary for Policy Makers". It can be downloaded at: http://www.ipcc.ch/
Very readable and definitive on what we know, what we don't know.
http://en.wikipedia.org/wiki/global_warm...
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