how has temperature and CO2 changed over time in united states? is the change related to a specific event?

Answer 1

Go to this website there is a graph that shows temperature and CO2 levels for thousands of years... the increase is often associated with the increase in human population and the industrial revolution.

http://www.cotf.edu/ete/modules/climate/GCremote3.html

Answer 2

Temperature and CO2 levels tend to be global - there was a period often called the Little Ice Age that was primarily confined to Europe but that event was the exception rather than the rule (it was partly attribiutable to localised factors such as a halving of the population because of the Black Death).

Over billions of years there have been massive fluctuations in bothe CO2 levels and temperatures - sometimes considerably higher than now, sometimes lower.

More recently, specifically in the last 200 years, there has been a continual increase in CO2 levels so much so that they're at the highest level since humans populated the planet (385ppmv compared to the previous record of 310ppmv - this level is increasing). As CO2 levels have risen so too have temperatures, the correlation between them is an exact one which is to be expected given the physical properties of carbon dioxide and the other greenhouse gases.

There's no one specific event that can be held to account - simply industrialisation as a whole. Be it an increase in the burning of fossil fuels, more intensive agriculture, mining and quarrying etc.

I hope this answers your question for you. Just for the record, Mars MAY be warming (not enough evidence to say for certain), if it is then one thing is certainly true - it's not because of increased solar output. If that were the case all the planets and moons would be warming and they're not, at most 5 out of 173 are warming.

Answer 3

Yes it certainly has changed. The change is brought about in three ways...

1. Over the past ten years there has been a huge leap in the number of air miles flown by high altitude jet aircraft. Each one of those jets spews out millions and millions of cubic feet of CO2 on a cross country flight, or a transcontinental flight. Worse, they do it in the upper atmosphere where it cannot readily be absorbed by green plants until it settles down to the surface of the earth.

2. In the last ten years we have seen a marked increase in the number of rocket launches into the upper atmosphere which produce millions and millions of cubic feet of carbon dioxide and carbon monoxide as they shoot up into the highest altitudes.

3. People all over the world continue to cut down forests and eliminate the very devices which eat carbon dioxide and give of oxygen. You could easily draw a graph of green area losses and correlate it to rise in CO2 levels over the same period.

Answer 4

Temperature trended up in the from 1910-1940, then dropped and held steady before trending upward in the late 70s. No one specific event is responsible, however, Economic acticity has accelerated over that period.

Roads and building trap more heat than foliage, hence, an urban heat island effect, also, increased carbon traps more heat in air.

Answer 5

Crippldog is right. Mars is getting hotter as well. Al Gore is a fear monger. Do some research. Our solar system is heating up not just earth. My guess is the Sun is going through a shift and is causing many planets to heat up. Earth has gone through many cycles of heating up and cooling down. (ice age anyone). Don't believe everything the media says. They are hype machines.
Al Gore takes temperature readings from the ground which are far less accurate than satellite readings. If you go by satellite readings the temperature on Earth has changed VERY minimally. The reason ground readings aren't accurate is because they are taken in or near cities. Cities trap heat from buildings to concrete and asphalt. They give inaccurate Global temperatures.

Answer 6

For some reason, temperature seems to keep going up and down, at least in MY city. Seems warmer during the day, and cooler at night. UNEXPLAINABLE. CO2, on the other hand seems to change from gas to solid, and then back to gas again. Too bad we can't capture these two things on film.

Answer 7

Temp and CO2 have changed. The secon question is the really good one. I believe that the answer is no on knows for sure. It may be impossible to say for sure. Some people say that they know for sure. This is how to spot a liar.

Answer 8

Al Gore would claim that he has bettered the CO2 situation in this country, when in fact he consumes more energy than many ordinary American citizens combined. what do you expect from a dolt who claims to have invented the internet...Koo Koo...Koo koo....

Answer 9

global warming is crap...it's just a sun cycle, look at history. In the 1970's they were worried about global cooling. Mars is going through the same thing right now and there's no humans there causing global warming