Aogcms
This presentation is the property of its rightful owner.
Sponsored Links
1 / 40

AOGCMs PowerPoint PPT Presentation


  • 109 Views
  • Uploaded on
  • Presentation posted in: General

AOGCMs. Equations involved in the construction of General Circulation Models (GCMs). Structure of a General Circulation Model (GCM) Models with coupled Atmospheric and Oceanic layers are termed AOGCMs. Time step involved in integration. Where x is the grid size, c is the

Download Presentation

AOGCMs

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


Aogcms

AOGCMs


Aogcms

Equations involved in the construction of General

Circulation Models (GCMs).


Aogcms

Structure of a

General Circulation

Model (GCM)

Models with coupled

Atmospheric and

Oceanic layers are

termed AOGCMs

Time step involved

in integration

Where x is the

grid size, c is the

propagation speed


Aogcms

Major AOGCMs


Tests of climate models

Tests of Climate Models


Aogcms

Can AOGCMs “predict” the climate of the past 150 years?

Mean Global temperature trend since 1850


Aogcms

Corrections to Historical Climate Data:

It is necessary to check the derived temperature history using

Independent temperature proxies:


Aogcms

Climate data from

Boreholes


Aogcms

Coral Bleaching


Aogcms

Trends in glaciers

over the past few

centuries.


Aogcms

Pasterze Glacier,

Austria

2004

1875


Greenhouse gas emission scenarios

Greenhouse Gas Emission Scenarios


Aogcms

Scenarios for the emission of greenhouse gases,

aerosols, etc. for the next century are essential for

the prediction of anthropogenic effects on the

global and regional climates.

The IPCC (Intergovernmental Panel on Climate

Change) has, over the years prepared a number of

such scenarios. In 1992 it released the IS92

scenarios. In 2000, the IPCC proposed a number

of new scenarios, known as the SRES scenarios


Aogcms

SRES Scenario “Storylines”


Aogcms

SRES Storylines continued:


Aogcms

To act as useful inputs to climate models, the SRES

Storylines must be quantified in terms of population growth,

economic growth, energy supplies and usage, mix of

renewable/fossil/nuclear fuels, technology development,

etc.


Aogcms

Projections of atmospheric CO2 concentrations


Aogcms

A1B


Aogcms

Sea ice extent


Aogcms

Changes in ocean pH and Aragonite saturation. Aragonite is a meta-stable form

of calcium carbonate. Calcium carbonate will dissolve at levels below 100%

saturation, removing an important sink of dissolved carbon in the surface ocean.


Aogcms

Sea rise due to thermal expansion


Aogcms

Projections of total sea-level rise due to all causes


Aogcms

Simulations in atmospheric CO2 concentrations

under various emission reduction scenarios.


  • Login