climate models n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Climate Models PowerPoint Presentation
Download Presentation
Climate Models

Loading in 2 Seconds...

play fullscreen
1 / 14

Climate Models - PowerPoint PPT Presentation


  • 109 Views
  • Uploaded on

Climate Models. Current Weather Great Global Warming Swindle Debunked General Circulation Models (GCMs) Changes in GCMs since 1970s Problems with GCMs Charles Rodda Presentation For Next Class: Read Ch. 12 (pp. 380-397). Debunking Great Global Warming Swindle.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Climate Models' - juan


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
climate models
Climate Models
  • Current Weather
  • Great Global Warming Swindle Debunked
  • General Circulation Models (GCMs)
  • Changes in GCMs since 1970s
  • Problems with GCMs
  • Charles Rodda Presentation

For Next Class: Read Ch. 12 (pp. 380-397)

debunking great global warming swindle
Debunking Great Global Warming Swindle
  • http://www.youtube.com/watch?v=pxw3_XBvm94
general circulation models
General Circulation Models
  • Mathematical representations of the climate system, expressed as computer codes and run on powerful computers
  • Operate in 3-D and have capacity to represent spatial distribution of land, water, ice, elevation of mountains, vertical distribution of greenhouse gases, and changes in solar radiation
  • Operation of GCMs incorporates physical laws and equations that govern the circulation of Earth’s atmosphere
slide9

Huge improvements

in model resolution

since FAR!

slide10

. . . and in modeling

the physical

processes!

how reliable are gcms
How Reliable are GCMs?
  • “One source of confidence comes from the fact that model fundamentals are based on established physical laws . . .
  • Second source of confidence comes from the ability of models to simulate (more or less!) important aspects of the current climate” (IPCC AR4)
limitations of gcms
Limitations of GCMs
  • A model is a hypothesis about how the climate system operates!
  • Only the dynamic core of the models represent basic physics. All other components of these models are parameterizations, which means they are not fundamental physics but engineering code with tunable parameters.

From Pielke (2011)

slide14

It is very difficult to accurately parameterize clouds and

cloud microphysical processes in weather or climate models!