There are lots of charts compiled here as a slide show, which indicate how global warming is being manifested and climate is changing. Feel free to use them. Charts provide a wealth of information but you need know how to read them. Click here for a short video on how to read a global surface temperature chart.
This page has a collection of charts showing global warming and climate change.
There are more below. If you roll the mouse over the ocean temperature chart, you can see a chart of the trend in the minimum month of sea ice in the Arctic and Antarctica.
Click on any chart to see a larger version in a new tab.
...ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.
Charles Darwin (1871)
The descent of man, and selection in relation to sex
When looking at a typical chart, see how it changes over time. Especially over the longer time frame, because that will tell you if climates are changing.
If there is a zero line, look to see when it is mostly below the line and over what time period it is mostly above the line. Surface temperatures are often represented by a difference or anomaly from a baseline. That is, a period (usually 30 years) is averaged and represented as zero. That's the baseline. You can then easily see how much change there has been since the baseline period.
Check the units of measure. What might seem like a small change in surface temperature can lead to a big shift in climate.
GISTemp is prepared by NASA Goddard Institute for Space Studies. (link).
HadCRUT4 is prepared jointly by the Hadley Centre of the UK Met Office and the Climatic Research Unit of the University of East Anglia. (link)
BEST, the Berkeley Earth Systems Temperature was compiled recently. (link)
I do add more charts from time to time. There is some good data around and it is very accessible to the general public.
This includes data on sea levels, which are rising as the earth heats up, particularly the oceans - and ice sheets and glaciers all around the world are melting.
I've read some people saying the surface hasn't warmed for twenty, nineteen, eighteen or sixteen years. In one case the same person has been saying all of the above.
Click here to see what's happened in just the past 16 years. It's still warming!
The charts show that it's not just the surface of the earth that's heating up. The oceans are getting hotter and the sea ice is melting. In the Arctic the sea ice is disappearing faster than almost anyone imagined it would. Roll your mouse over the ocean temperature chart to see what's been happening to sea ice.