How do scientists collect climate change data?

Question

Any suggestiong very welcome, thank you.

Answer 1

They pull it out of their ***, duh

Answer 2

In loads of different ways.

They can drill ice cores out of glaciers in places like antartica. This gives a record of atmospheric change going backs hundreds of thousands of years. During winter harder denser ice forms than in summer meaning the ice forms in layers and each layer represents 1 year (bit like tree rings). therefore scintists are able to extract ice samples and determine it's exact age. When the ice forms small air bubbles are captured within it and these can be extracted to give a sample of the atmosphere for a particular year.

Data can be gathered going back millions of years by studying rock compositions. There are well established methods for dating any rock sample and analysing the chemical composition of different types of rock gives information about the composition of the atmosphere and the temperature at the time.

Tree rings. this yields data going back a few thousand years (ie that's the oldest tree there is). the wider the ring the more growth, meaning it was hotter that year.

Can't think of any more.

hope this helps.

Answer 3

In the short run, they compare statistics from year to year, decade to decade. Weather statistics only go back about a hundred and fifty years though.

For longer range, they must depend of what are called admiralty reports... sailors kept decent records of weather conditions in these.

In the even longer run, we can study evidence in tree rings and also in core samples of ice found at the poles, high altitude glaciers and other long term ice fields.

Answer 4

typically by studying the ice from the Antartic.. they have been able to go back to the time of the Dinosaurs and discovered there was much more oxygen back then- which is how/why they got so big...

Answer 5

They drill out large core samples from the polar ice cap.  The air-bubbles trapped in the ice can tell the scientists a lot about carbon levels, oxygen, etc, and their effect on the environment.

Answer 6

A couple different places

They have ice cores, which have air bubbles trapped in the ice which are like little samples of the atmosphere from thousands of years ago.  

Tree rings are another thing they look at.

They also look at weather recording stations around the world.

There are quite a few more but I can't remember them all.

Answer 7

i agree with a previous answer.

They pull it out of their ***.

Or from algore's ears.

By the way, whenever these Globalwarming n***s get data that does not agree with their pre-conceived bias, they simply don't share this data with anyone.

This is why you must never trust any of these scientists who are biased.  None of their "science" should be taken seriously, because it;s fatally flawed from the outset.

don't listen to the Global Warming n***s. Their "final solution" is to turn us all into lampshades. Or, since lamps are not globally friendly, their aim is to turn us all into soap

Answer 8

The short hand is;

Rising tides, Declining Ice-bergs, constant uprise in the temperature and the common decline of earths natural species.

Answer 9

Here's a link that talks about one of the most important pieces of the puzzle, CO2 measurements http://earthguide.ucsd.edu/globalchange/...

As other people have mentioned, they drill ice cores in Greenland and Antarctica and measure the gases trapped in bubbles and the isotopes of oxygen that the ice is made out of.  They look at mud layers in lakes; they take measurements of temperature all over the world, not just using thermometers but also using the time it takes GPS signals to travel through the atmosphere and sound to travel through the ocean; they look at long term records of flowers blooming; they use satellites to measure how much infrared radiation the Earth is emitting and how much sunlight is being reflected; they measure the pH of the ocean and its total carbon content and on and on.

And unlike what one answerer said, they make this data freely available so that everyone can use and understand it.

Answer 10

Another key source of temperature data comes from surface monitoring stations.  Unfortunately, the stations are providing bad data due to poor maintenance and placement, which has resulted in reports of higher than actual temperatures.  Temperature studies using this data are basically worthless, but the so-called climate experts keep on using it.