Climate model, definition of

Climate change is a change in the statistical distribution of weather over periods of time that range from decades to millions of years. It can be a change in the average weather or a change in the distribution of weather events around an average (for example, greater or fewer extreme weather events). Climate change may be limited to a specific region, or may occur across the whole Earth.

In recent usage, especially in the context of environmental policy, climate change usually refers to changes in modern climate. It may be qualified as anthropogenic climate change, more generally known as global warming.

Wikipedia - Climate Change entry

• Cloud feedback wrong in climate models, paper
  A recent paper by Miller et al 2012 in the AMS Journal indicates that the climate models could be out by a factor of 19 with respect to actual cloud feedback.
• Climate models are just wrong..
  In a recent paper climate models were hindcast tested against actual surface observations, and found to be seriously lacking if not totally useless... We provide some more background detail.
• Lets the climate models tell the truth we want to see..
  Climate models are just that, a model, based on assumptions and theories. Their accuracy is limited not only through the complexities of the climatic systems they model but also by the conclusions researchers want to see from them..

• Cenozoic Ice Age Caused by Drop in CO2… Because Models
  Guest “I couldn’t make this sort of schist up if I was trying” by David Middleton H/T to Robert Bissett… Drop in Greenhouse Gas Caused Global Cooling 34 Million Years…
• First-time direct proof of chemical reactions in particulates
  Paul Scherrer Institute Researchers at the Paul Scherrer Institute PSI have developed a new method to analyse particulate matter more precisely than ever before...
• A Tale Of Two Convergences
  Guest Post by Willis Eschenbach In the course of doing the research for my previous post on thunderstorm evaporation, I came across something I’d read about but never had seen...
• NASA Charts Real-Time Carbon Emissions in Ultra High-Resolution Climate Model (VIDEO)
  https://www.youtube.com/watch?v=x1SgmFa0r04 NASA just launched a new high-resolution computer model that gives a stunning look at the yearly movement of carbon emissions through the planet’s atmosphere. NASA created the model by combining ground-based
• The Lewis and Crok exposition – Climate less sensitive to Carbon Dioxide than most models suggest
  Full papers plus additional comments from co-author Nic Lewis follow. I have added some relevant diagrams and tables from the report, plus reproduced the foreword by Dr. Judith Curry as well as updated the summary Equilibrium Climate Response Graph originally...
• Volcanic Eruptions May Have Slowed Climate Change, New Study Shows
  Image of volcano eruption / Shutterstock According to a recent study published in the journal Nature Geoscience, an unusually high number of volcanic eruptions over the past 14 years may have helped to slow the progress of global warming...
• Global Warming is REAL but NOT a Big DEAL
  Guest essay by Dr. Ira Glickstein We’ve reached a turning point where it is hard for any Global Warming Alarmist to claim (with a straight face) that the world as we know it is about to end in the coming … Continue reading →
• Climate Craziness of the Week: only the ‘cooler’ models are wrong – the rest say 4ºC of warming by 2100
  From the University of New South Wales and Dr. Steven Sherwood: “Climate sceptics like to criticise climate models for getting things wrong, and we are the first to admit they are not perfect,” said Sherwood. “But what we are finding … Continue...
• Earth Could be Two Times More Sensitive to CO2 Than Previously Thought
  Image via Shutterstock As levels of CO2 in the atmosphere rise, scientists are grappling with a mountain of data to form an accurate picture of the future. Scientists from the Geological Society of London now believe that most current climate models only    
• On the Futility of Long-Range Numerical Climate Prediction
  Note: two events at AGU13 this morning dovetail in with this essay. The first, a slide from Dr. Judith Lean which says: “There are no operational forecasts of global climate change”. The second was a tweet by Dr. Gavin Schmidt, … Continue...

Related Tags: climate change, global warming

Climate change is a change in the statistical distribution of weather over periods of time that range from decades to millions of years. It can be a change in the average weather or a change in the distribution of weather events around an average (for example, greater or fewer extreme weather events). Climate change may be limited to a specific region, or may occur across the whole Earth.

In recent usage, especially in the context of environmental policy, climate change usually refers to changes in modern climate. It may be qualified as anthropogenic climate change, more generally known as global warming.

Wikipedia - Climate Change entry

• Cloud feedback wrong in climate models, paper
  A recent paper by Miller et al 2012 in the AMS Journal indicates that the climate models could be out by a factor of 19 with respect to actual cloud feedback.
• Climate models are just wrong..
  In a recent paper climate models were hindcast tested against actual surface observations, and found to be seriously lacking if not totally useless... We provide some more background detail.
• Lets the climate models tell the truth we want to see..
  Climate models are just that, a model, based on assumptions and theories. Their accuracy is limited not only through the complexities of the climatic systems they model but also by the conclusions researchers want to see from them..

• Cenozoic Ice Age Caused by Drop in CO2… Because Models
  Guest “I couldn’t make this sort of schist up if I was trying” by David Middleton H/T to Robert Bissett… Drop in Greenhouse Gas Caused Global Cooling 34 Million Years…
• First-time direct proof of chemical reactions in particulates
  Paul Scherrer Institute Researchers at the Paul Scherrer Institute PSI have developed a new method to analyse particulate matter more precisely than ever before...
• A Tale Of Two Convergences
  Guest Post by Willis Eschenbach In the course of doing the research for my previous post on thunderstorm evaporation, I came across something I’d read about but never had seen...
• NASA Charts Real-Time Carbon Emissions in Ultra High-Resolution Climate Model (VIDEO)
  https://www.youtube.com/watch?v=x1SgmFa0r04 NASA just launched a new high-resolution computer model that gives a stunning look at the yearly movement of carbon emissions through the planet’s atmosphere. NASA created the model by combining ground-based
• The Lewis and Crok exposition – Climate less sensitive to Carbon Dioxide than most models suggest
  Full papers plus additional comments from co-author Nic Lewis follow. I have added some relevant diagrams and tables from the report, plus reproduced the foreword by Dr. Judith Curry as well as updated the summary Equilibrium Climate Response Graph originally...
• Volcanic Eruptions May Have Slowed Climate Change, New Study Shows
  Image of volcano eruption / Shutterstock According to a recent study published in the journal Nature Geoscience, an unusually high number of volcanic eruptions over the past 14 years may have helped to slow the progress of global warming...
• Global Warming is REAL but NOT a Big DEAL
  Guest essay by Dr. Ira Glickstein We’ve reached a turning point where it is hard for any Global Warming Alarmist to claim (with a straight face) that the world as we know it is about to end in the coming … Continue reading →
• Climate Craziness of the Week: only the ‘cooler’ models are wrong – the rest say 4ºC of warming by 2100
  From the University of New South Wales and Dr. Steven Sherwood: “Climate sceptics like to criticise climate models for getting things wrong, and we are the first to admit they are not perfect,” said Sherwood. “But what we are finding … Continue...
• Earth Could be Two Times More Sensitive to CO2 Than Previously Thought
  Image via Shutterstock As levels of CO2 in the atmosphere rise, scientists are grappling with a mountain of data to form an accurate picture of the future. Scientists from the Geological Society of London now believe that most current climate models only    
• On the Futility of Long-Range Numerical Climate Prediction
  Note: two events at AGU13 this morning dovetail in with this essay. The first, a slide from Dr. Judith Lean which says: “There are no operational forecasts of global climate change”. The second was a tweet by Dr. Gavin Schmidt, … Continue...