Why don't you people wise up and stop making baseless accusations?
The Climatic Research Unit (CRU) of the University of East Anglia gathers data from meteorological stations around the world and the university processes the information for the Hadley Center and the UK Met Office. The only thing they do with that data is collect monthly averages of temperature and assess the temperature of a 5 degree latitude by 5 degree longitude spacial grid of the Earth, if an area has enough ground stations to give good data and the ground stations existed during the time they use for a base average. Governments use universities because they will do the work cheaper. The UK Met Office and Hadley Center was started by the conservative Margaret Thatcher.
Now, you Denialistas were asked how is it possible to change that data and you didn't answer, because you don't have an answer. You just keep making baseless charges only backed by your words, that can't make sense unless the whole world is involved in a giant comspiracy. Our National Climatic Data Center does the same thing, collecting meteorological data from around the world for the Department of Commerce. The countries that send that data keep records in their own countries, so anyone changing that data would be caught. There is also satellite temperature data processed at the University of Alabama.
But it's you Revisionists who have dropped 5000 weather stations from use. Now, you only use the ones near urban areas that benefit from the Urban island Effect. Do you realise we are using the same number of weather stations as were used back in 1916? A thinking person would wonder why.
A REVISIONIST, on the other hand, will just look at something else to falsify.
You just make things up and believes someone is going to buy it, like that nonsense about using urban areas! They evaluate whether the data will be representative of the grid I mentioned. 5 degrees by 5 degrees is a large area that can have various geographies.
What part of excluding areas that didn't have data during the base period can't you understand? What part of GISS and HadCRUT being entirely independent don't you understand? What part of that data still existing in the nations that provided it don't you understand?
You say they are falsifying data, but you can't give one example from all those countries providing that data to support your claims. Is every country on Earth involved in this conspiracy to falsify data on the US and UK temperature maps? Your claims are just words from someone making them up.
The NCDC and Met Office still gather data from all the weather stations they can get data from, but they can't use the data on a map if data didn't exist for that area during the base period where they compare current data with the past. In the future, when data exists to show an anomaly in a particular area, then they can do it. When they can't determine the changes in temperature in a grid area, they just leave the grid blank, so how is that falsifying data to not even show an anomaly for a grid, when there is no way of knowing what the anomaly is? In order to show the changes of present temperatures to the past, you have to know what the past temperatures were.
I live in the mid-Atlantic area and the weather is warmer than it was. I've seen videos of farmers in Greenland and they are growing crops they couldn't grow before. There are hundreds of glaciers that had pictures taken of them and they show retreat. There are pictures of homes in permafrost areas losing their foundation. There is evidence of sea ice melting. There is a world of evidence of warming and you run around telling people it isn't happening for your economic agenda.
When you post pictures of nuclear submarines surfacing and say it can't happen today, then you have no credibility in what you choose to claim. You knew those submarines were surfacing in polynias and intentionally made false statements about it not being able to happen today.
The only way it would be possible to falsify those global temperatrure maps is to lower the past temperatures during the base period and raise the present temperatures on a monthly basis. The UK and the US would both have to be doing it, all the countries of the world supplying the data would have to be going along with it and the US would have to be changing it's satellite temperature data to go along with it. Even if all that was possible, how do you convince the ice to go along with it?
I gave you a chart of June Snow Cover for the Northern Hemisphere and pointed out the area was like 3 times the area of the Greenland Ice Sheet (GIS). If it didn't get warmer what happened to the snow? What happened to the arctic sea ice to reduce it to around the area of GIS? You can claim melting 97% of the Greenland surface was a once in a 150 year thing, but with less arctic sea ice and Northern Hemisphere snow cover, it's going to be a regular thing.
Why aren't you the proper little revisionist...here you go, read and learn. This is three links of hundreds available to you. I suggest you read something other than the propaganda you are being spoonfed. If you actually want to learn that is.
Weather Extremes : Inconsistencies in NCDC Historical Temperature Analysis? | Weather Underground
Guest Post By Richard Berler Chief Meteorologist KGNS TV Laredo, TX | Climate Science: Roger Pielke Sr.
New paper blames about half of global warming on weather station data homogenization | Watts Up With That?