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20 and 30 year climatologies from CMIP3 climate model output as used in the 2007 IPCC Fourth Assessment Report (AR4)

Climatology data used in Climate Change 2007, the Fourth Assessment Report (AR4) of the United Nations Intergovernmental Panel on Climate Change (IPCC) calculated from Coupled Model Intercomparison Project Phase 3 (CMIP3) model output.

Simulations of global climate models were run by various climate modelling groups coordinated by the World Climate Research Programme (WCRP) on behalf of the IPCC.

Climatology data was calculated from global climate model simulations of experiments representative of Special Report on Emission Scenarios (SRES) scenarios: A1b, A2, B1, the commitment scenario experiment (COMMIT), the twentieth century experiment (20C3M), the pre-industrial control (PICTL) and the idealised experiments 1PCTO2X and 1PCTO4X.

The AR4 climatologies are 20-year period averages. 30-year period averages have also been calculated for comparison with the IPCC Third Assessment Report (TAR). The monthly climatology data covers the period from 1850-2100. The climatologies are of global scope and are provided on latitude-longitude grids.

The period averages are:

20x: 20-year averages [+20-39, +46-65, +80-99, +180-199] as used in chapter 10 of IPCC 2007,

30a: 30-year averages [+01-30, +31-60, +61-90] as used in the observed climatologies,

30b: 30-year averages [+10-39, +40-69, +70-99] for compatibility with the IPCC 3rd Assessment Report (TAR).

The climatology period averages listed above are relative to AD2000 for SRES scenarios A1B, A2, B1, and the commitment scenario COMMIT, relative to AD1900 for the twentieth century run (20C3M) and relative to the start of the experiment for the pre-industrial control (PICTL) and the 1PCTO2X and 1PCTO4X runs.

Data files are 'tar' files with names of the form [model]_[experiment]_[variable]_{climatology}.tar.

The experiments in this dataset include the SRES future scenarios:

A1B Globalisation with rapid economic growth,

A2 Regionalisation with regionally oriented economic development,

B1 Globalisation with global environmental sustainability.

Also:

COMMIT simulation of climate change we are committed to given the current loading of greenhouse gasses and zero future emissions.

PICTL the pre-industrial control.

20C3M the 20th century climate simulaiton.

1PTO2X and 1PTO4X idealised simulaitons where the concentration of atmospheric carbon dioxide (CO2) is increased by 1 percent per year from pre-industrial concentration until reaching 2x and 4x the original concentration.

The dataset is comprised of monthly mean surface data for the following atmospheric variables:

specific humidity,

precipitation flux,

air pressure at sea level,

surface downwelling shortwave flux in air,

air temperature,

air temperature daily max,

air temperature daily min,

eastward wind,

northward wind.

Simple

Date (Publication)
2021-06-01T20:39:47
Date (Creation)
2021-06-01T20:39:47
Identifier
https://catalogue.ceda.ac.uk/uuid/e6edf4076e7e42f681f495ccf0ec22cb
Identifier
Centre for Environmental Data Analysis (CEDA) / e6edf4076e7e42f681f495ccf0ec22cb
Author
  Unavailable - Solomon, Susan ( author )
Author
  Unavailable - Qin, Dahe ( author )
Author
  Unavailable - Manning, Martin ( author )
Custodian
  Centre for Environmental Data Analysis (CEDA) - custodian
Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom
01235446432
Owner
  Centre for Environmental Data Analysis (CEDA) - data_owner
Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom
01235446432
Distributor
  Centre for Environmental Data Analysis (CEDA) - distributor
Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom
01235446432
Principal investigator
  Unavailable - Manning, Martin ( principal_investigator )
Principal investigator
  Unavailable - Qin, Dahe ( principal_investigator )
Principal investigator
  Unavailable - Solomon, Susan ( principal_investigator )
pointofContact
  Centre for Environmental Data Analysis (CEDA) - point_of_contact
Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom
01235446432
Publisher
  Centre for Environmental Data Analysis (CEDA) - publisher
Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom
01235446432
Maintenance and update frequency
unknown Unknown
Update scope
dataset Dataset
Keywords
  • IPCC
  • DDC
  • AR4
  • CMIP3
  • SRES
  • COMMIT
  • PICTL
  • 20C3M
  • 1PCTO2X
  • 1PCTO4X
  • Climate Change
GEMET - INSPIRE themes, version 1.0
  • atmospheric conditions
Access constraints
otherRestrictions Other restrictions
Other constraints
Public data: access to these data is available to both registered and non-registered users.
Use constraints
otherRestrictions Other restrictions
Other constraints
Under the following licence https://artefacts.ceda.ac.uk/licences/missing_licence.pdf, appropriate use of these data may fall under unstated use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Spatial representation type
grid Grid
Metadata language
EnglishEnglish
Topic category
  • Climatology, meteorology, atmosphere
N
S
E
W
thumbnail


Begin date
1850-01-01T00:00:00
End date
2100-12-31T23:59:59
Unique resource identifier
WGS 84
Distribution format
  • netcdf ()

Distributor
  Centre for Environmental Data Analysis (CEDA) - Data Center Contact
Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom
01235446432
OnLine resource
CEDA Data Catalogue Page

Detail and access information for the resource

OnLine resource
DOWNLOAD

Download Data

OnLine resource
CMIP3 Climate Model Documentation

No further details.

OnLine resource
Special Report on Emission Scenarios (SRES)

No further details.

OnLine resource
Climate Change 2007, the Fourth Assessment Report (AR4) of the United Nations Intergovernmental Panel on Climate Change (IPCC)

No further details.

Hierarchy level
dataset Dataset

Conformance result

Date (Publication)
2010-12-08
Statement
Climatology data calculated from global climate model simulations for a variety of experiments from the Coupled Model Intercomparison Project Phase 3 (CMIP3).
File identifier
e6edf4076e7e42f681f495ccf0ec22cb XML
Metadata language
EnglishEnglish
Character set
8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 UTF8
Parent identifier
Model output described in the 2007 IPCC Fourth Assessment Report (AR4), 20 and 30 year climatologies 3a9c171d7f1c4441ba8ffb9c2c22b81e
Hierarchy level
dataset Dataset
Date stamp
2025-05-09T02:26:54
Metadata standard name
UK GEMINI
Metadata standard version
2.3
Point of contact
  Centre for Environmental Data Analysis (CEDA)
Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom
01235446432
 
 

Overviews

Spatial extent

N
S
E
W
thumbnail


Keywords

GEMET - INSPIRE themes, version 1.0
atmospheric conditions

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