Thermometers then and now

Is is warmer today that it was a hundred or more years ago? Is the 'average temperature' then as accurate as the average temperature today?

The question about the temperature data over the last few hundred years has less to do with the accuracy of thermometers a few hundred years ago and more to do with the number of them. There were not as many weather stations centuries ago as there are today. Temperatures were measured in a few places. This means that the so called average temperature taken a few hundred years ago is very inaccurate.

This is what you need to know. We all know that the temperatures around the world at any given time are greatly different. It may be 50 degrees here and 70 degrees in Florida and 110 degrees in the Sierra desert. If you only measured the temp in two of those locations and tried to get the average global temperature you would get a totally different temperature than if you took the average of all three.

My point is that over the centuries we have increased the number of locations where we measure temperature. Thus giving us a gradually increasing accuracy in the average global temperature. This is what is called 'resolution'. An example of resolution is this: When you look at a picture with low resolution say 10 dots of color per inch you get a distorted view of the picture. As you increase the resolution (dots of color per inch) you get a better view of the picture. This is the same for measuring the temps around the world.

The problem the global warming theorists run into is they are trying to compare a fuzzy picture with a clearer picture and trying to fill in the gaps with their imagination. The two pictures may be exactly the same, but they claim that the picture is changing because we can now see more of the picture. This is a wrong assumption. The reason I say they are using their imagination to fill in the gaps is because they are using computer models based on their assumptions about the weather and climate changes to determine what the remaining temperatures were centuries ago in an attempt to fill in the dots in their fuzzy picture. The problem with this is we can not create accurate computer models to tell use what the weather is going to be two weeks from now, just ask your local meteorologist if it will rain or snow two weeks from Saturday. So the computer models that are supposed to tell us what the temperature was two hundred or two thousand years ago must also be flawed. They take human input and human assumptions and human agendas and produce the desired results for the human that programmed the model.

So is it warmer today that it was 200 years go? No, not really.