Climate Science Glossary

Term Lookup

Enter a term in the search box to find its definition.

Settings

Use the controls in the far right panel to increase or decrease the number of terms automatically displayed (or to completely turn that feature off).

Term Lookup

Settings


All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.

Home Arguments Software Resources Comments The Consensus Project Translations About Donate

Twitter Facebook YouTube Pinterest

RSS Posts RSS Comments Email Subscribe


Climate's changed before
It's the sun
It's not bad
There is no consensus
It's cooling
Models are unreliable
Temp record is unreliable
Animals and plants can adapt
It hasn't warmed since 1998
Antarctica is gaining ice
View All Arguments...



Username
Password
Keep me logged in
New? Register here
Forgot your password?

Latest Posts

Archives

Why are there fewer weather stations and what's the effect?

What the science says...

Select a level... Basic Intermediate
Dropped stations show more warming than kept stations.

Climate Myth...

Dropped stations introduce warming bias
'Two American researchers allege that U.S. government scientists have skewed global temperature trends by ignoring readings from thousands of local weather stations around the world, particularly those in colder altitudes and more northerly latitudes, such as Canada.' (Vancouver Sun)

An oft-cited skeptic argument is that the decrease in available temperature measuring stations during the 1990s introduces an increased bias towards warming. The argument is based upon the premise put forward by some climate change skeptics that stations which show more warming were kept and ones that show less warming were dropped. The reason this assumption is made is because during the 1990s there was a large reduction in the number of meteorological stations being used for global temperature analyses.

In order to test this theory, several independent researchers (Tamino, Ron Broberg, Zeke Hausfather, Joseph at Residual Analysis and others at the Clear Climate Code Project) and have calculated whether the stations dropped showed less warming than the ones kept. The results? Several find no difference and several find that dropped stations show more warming.

Furthermore, it is also important to note that the methods used in global temperature analyses make them robust to the loss of stations because they use techniques which incorporate multiple nearby stations into analysis of any individual region.

So to conclude: Independent researchers have shown that there is no truth to the claim that cooling stations were removed, in fact evidence suggests that if these stations were included, warming would be shown to be slightly greater.

Last updated on 24 August 2010 by robert way.

Printable Version  |  Offline PDF Version  |  Link to this page

Comments

There have been no comments posted yet.

Post a Comment

Political, off-topic or ad hominem comments will be deleted. Comments Policy...

You need to be logged in to post a comment. Login via the left margin or if you're new, register here.

Link to this page



The Consensus Project Website

TEXTBOOK

THE ESCALATOR

(free to republish)

THE DEBUNKING HANDBOOK

BOOK NOW AVAILABLE

The Scientific Guide to
Global Warming Skepticism

Smartphone Apps

iPhone
Android
Nokia

© Copyright 2014 John Cook
Home | Links | Translations | About Us | Contact Us