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ACCMIP: DLR (German Aerospace Centre) climate model output

Update Frequency: Not Planned
Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2011-08-24
Download Stats: last 12 months


The Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) was organized under the auspices of Atmospheric Chemistry and Climate (AC&C), a project of International Global Atmospheric Chemistry (IGAC) and Stratospheric Processes And their Role in Climate (SPARC) under International Geosphere Bisosphere Programme (IGBP) and World Climate Research Programme (WCRP). The Atmospheric Chemistry and Climate Model Intercomparison Project (ACC-MIP) consists of several sets of simulations that have were designed to facilitate useful evaluation and comparison of the AR5 (Intergovernmental Committee on Climate Change Assessment Report 5) transient climate model simulations.

This dataset contains measurements from climate simulations from DLR of the 20th century and the future projections, which output feedback between dynamics, chemistry and radiation in every model time step. The data are collected from running the latest set of ozone precursor emissions scenarios, which output tropospheric ozone changes from 1850 to 2100.

Citable as:  DLR German Institute for Atmospheric Physics (2011): ACCMIP: DLR (German Aerospace Centre) climate model output. NCAS British Atmospheric Data Centre, date of citation.
Abbreviation: Not defined
Keywords: ACCMIP, Model, chemistry, climate


Previous Info:
No news update for this record
Previously used record identifiers:
Access rules:
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

The ACCMIP model output uses CMOR (Climate Model Output Rewriter) to convert data to CF netCDF. The CMOR conversion is performed by the individual modelling groups and the resulting CF netCDF files are archived at CEDA.

Data Quality:
ACCMIP data arrives direct from the modelling centres. A versioning system ensures that new versions of data are placed in separate version directories.
File Format:
Data are netCDF formatted

More Information (under review)

Data were collected from a numerical chemistry and climate simulation system that includes sub-models describing lower and middle atmosphere processes and their interaction with oceans, land and human influences.

Restricted Data Access

Access to data is restricted to the project participants for a retention period of 1 year from when data is deposited at the BADC.

Privileged external collaborators will also be granted access during the retention period.

Apply for access to ACCMIP data, applications to access the accmip data will be sent for approval to the project PI Jean-Francois Lamarque and users will be informed of the outcome.

Data availability and file format

ACCMIP data in the BADC repository

The ACCMIP archive uses a structure that is analogous to CMIP5 archive specified by the CMIP5 DRS document.

ACCMIP data uses the CF netCDF file format.

The Pre-industrial to end 21st century projections of tropospheric ozone from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) publication, contains details as to how the data were collected and used.

Who to contact

If you have queries about these pages or about obtaining the ACCMIP data from the BADC then you should contact CEDA Support. Your query should be answered within one working day. When follow-up work is required, the CEDA support will carry out the work as quickly and efficiently as possible, and in any case, the user will be kept informed of progress.

Process overview

This dataset was generated by the computation detailed below.
Title ECHAM/MESSy Atmospheric Chemistry (EMAC) Numerical Model System deployed on DLR (German Institute for Atmospheric Physics) Computers
Abstract This computation involved: ECHAM/MESSy Atmospheric Chemistry (EMAC) Numerical Model System deployed on DLR (German Institute for Atmospheric Physics) Computers. ECHAM/MESSy Atmospheric Chemistry (EMAC) numerical model system is a climate model with atmospheric chemistry modules, run in atmosphere-only mode; i.e. the model is driven by sea-surface temperature (SST) and sea-ice concentrations (SICs). The model explores how changes in the levels and locations of ozone precursor emissions, (such as nitrogen oxides NO and NO; referred to as NO, carbon monoxide (CO) and volatile organic compounds (VOCs), including methane, could tropospheric ozone abundances, from the pre-industrial period to future projections. The German Institute for Atmopsheric Physics (DLR) is based in Oberpfaffenhofen, Germany. It focusses on the research of the physical and chemical processes of the troposphere and lower stratosphere. The global climate model ECHAM has been developed at the DLR, and based on ECHAM, more complex interactively coupled model systems have been developed, including other components of the climate system: Ocean-Atmosphere models, atmosphere models including the sulfur cycle, etc. Several model versions are currently used operationally: ECHAM4 has been used since 1996, ECHAM5 has been made available at the begin of 2004. ECHAM4 has also been available with higher vertical resolution (ECHAM4.L39(DLR)) or with an upward shifted model top at 0.1 hPa (MA-ECHAM4). ECHAM is used to simulate the development of global weather (temperature, wind, clouds, etc.), using a spatial resolution of between 300 km and 500 km and a time step of between 20 min and 40 min, depending on model version.
Input Description None
Output Description None
Software Reference None
  • long_name: Air Temperature
  • standard_name: air_temperature
  • var_id: temp
  • units: K
  • names: air_temperature, Air Temperature
  • var_id: vmrch4
  • units: 1
  • long_name: CH4 Volume Mixing Ratio
  • standard_name: mole_fraction_of_methane_in_air
  • names: CH4 Volume Mixing Ratio, mole_fraction_of_methane_in_air
  • long_name: CO Volume Mixing Ratio
  • standard_name: mole_fraction_of_carbon_monoxide_in_air
  • var_id: vmrco
  • units: 1
  • names: CO Volume Mixing Ratio, mole_fraction_of_carbon_monoxide_in_air
  • long_name: DMS Volume Mixing Ratio
  • standard_name: mole_fraction_of_dimethyl_sulfide_in_air
  • var_id: vmrdms
  • units: 1
  • names: mole_fraction_of_dimethyl_sulfide_in_air, DMS Volume Mixing Ratio
  • var_id: vmrhcho
  • units: 1
  • long_name: Formaldehyde Volume Mixing Ratio
  • standard_name: mole_fraction_of_formaldehyde_in_air
  • names: mole_fraction_of_formaldehyde_in_air, Formaldehyde Volume Mixing Ratio
  • units: m
  • long_name: Grid Cell Geometric Thickness
  • var_id: dh
  • names: Grid Cell Geometric Thickness
  • units: 1
  • long_name: HNO3 Volume Mixing Ratio
  • standard_name: mole_fraction_of_nitric_acid_in_air
  • var_id: vmrhno3
  • names: mole_fraction_of_nitric_acid_in_air, HNO3 Volume Mixing Ratio
  • long_name: Isoprene Volume Mixing Ratio
  • standard_name: mole_fraction_of_isoprene_in_air
  • var_id: vmrisop
  • units: 1
  • names: Isoprene Volume Mixing Ratio, mole_fraction_of_isoprene_in_air
  • long_name: Land Area Fraction
  • standard_name: land_area_fraction
  • var_id: landf
  • units: 1
  • names: land_area_fraction, Land Area Fraction
  • long_name: Layer-intgrated Lightning Production of NOx
  • var_id: emilnox
  • units: kg m-2 s-1
  • names: Layer-intgrated Lightning Production of NOx
  • long_name: NO Volume Mixing Ratio
  • standard_name: mole_fraction_of_nitrogen_monoxide_in_air
  • var_id: vmrno
  • units: 1
  • names: NO Volume Mixing Ratio, mole_fraction_of_nitrogen_monoxide_in_air
  • var_id: vmrno2
  • units: 1
  • long_name: NO2 Volume Mixing Ratio
  • standard_name: mole_fraction_of_nitrogen_dioxide_in_air
  • names: NO2 Volume Mixing Ratio, mole_fraction_of_nitrogen_dioxide_in_air
  • long_name: O3 Volume Mixing Ratio
  • standard_name: mole_fraction_of_ozone_in_air
  • var_id: vmro3
  • units: 1
  • names: O3 Volume Mixing Ratio, mole_fraction_of_ozone_in_air
  • units: 1
  • long_name: OH Volume Mixing Ratio
  • standard_name: mole_fraction_of_hydroxyl_radical_in_air
  • var_id: vmroh
  • names: OH Volume Mixing Ratio, mole_fraction_of_hydroxyl_radical_in_air
  • units: 1
  • long_name: PAN Volume Mixing Ratio
  • standard_name: mole_fraction_of_peroxyacetyl_nitrate_in_air
  • var_id: vmrpan
  • names: mole_fraction_of_peroxyacetyl_nitrate_in_air, PAN Volume Mixing Ratio
  • units: s-1
  • long_name: Photolysis Rate of O3 to O1D
  • var_id: photo1d
  • names: Photolysis Rate of O3 to O1D
  • units: kg m-2
  • var_id: precip
  • standard_name: precipitation_amount
  • long_name: Precipitation Amount
  • names: Precipitation Amount, precipitation_amount
  • long_name: Rate of CH4 Oxidation
  • var_id: lossch4
  • units: mole m-3 s-1
  • names: Rate of CH4 Oxidation
  • units: 1
  • long_name: SO2 Volume Mixing Ratio
  • var_id: vmrso2
  • standard_name: mole_fraction_of_sulfur_dioxide_in_air
  • names: mole_fraction_of_sulfur_dioxide_in_air, SO2 Volume Mixing Ratio
  • long_name: Specific Humidity
  • var_id: hus
  • standard_name: specific_humidity
  • units: 1
  • names: specific_humidity, Specific Humidity
  • long_name: Surface Air Pressure
  • units: Pa
  • var_id: ps
  • standard_name: surface_air_pressure
  • names: surface_air_pressure, Surface Air Pressure
  • var_id: albsrfc
  • units: 1
  • long_name: Surface Albedo
  • standard_name: surface_albedo
  • names: surface_albedo, Surface Albedo
  • long_name: Total Emission Rate of CO
  • standard_name: tendency_of_atmosphere_mass_content_of_carbon_monoxide_due_to_emission
  • var_id: emico
  • units: kg m-2 s-1
  • names: Total Emission Rate of CO, tendency_of_atmosphere_mass_content_of_carbon_monoxide_due_to_emission
  • long_name: Total Emission Rate of NMVOC
  • var_id: emivoc
  • units: kg m-2 s-1
  • names: Total Emission Rate of NMVOC
  • long_name: Total Emission Rate of NOx
  • standard_name: tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_due_to_emission
  • var_id: eminox
  • units: kg m-2 s-1
  • names: tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_due_to_emission, Total Emission Rate of NOx
  • long_name: Total Ozone Column
  • units: kg m-2
  • var_id: o3col
  • standard_name: atmosphere_mass_content_of_ozone
  • names: Total Ozone Column, atmosphere_mass_content_of_ozone
  • units: kg m-2
  • long_name: Vertically Integrated Mass Content of Air in Layer
  • standard_name: atmosphere_mass_of_air_per_unit_area
  • var_id: airmass
  • names: atmosphere_mass_of_air_per_unit_area, Vertically Integrated Mass Content of Air in Layer
  • long_name: Zonal Mean Air Temperature
  • var_id: zmt
  • standard_name: air_temperature
  • units: K
  • names: air_temperature, Zonal Mean Air Temperature
  • long_name: Zonal Mean CH4 Volume Mixing Ratio
  • var_id: zmch4
  • units: 1
  • standard_name: mole_fraction_of_methane_in_air
  • names: mole_fraction_of_methane_in_air, Zonal Mean CH4 Volume Mixing Ratio
  • long_name: Zonal Mean Cly Volume Mixing Ratio
  • units: 1
  • var_id: zmcly
  • names: Zonal Mean Cly Volume Mixing Ratio
  • long_name: Zonal Mean O3 Volume Mixing Ratio
  • var_id: zmo3
  • standard_name: mole_fraction_of_ozone_in_air
  • units: 1
  • names: mole_fraction_of_ozone_in_air, Zonal Mean O3 Volume Mixing Ratio
  • units: m s-1
  • standard_name: eastward_wind
  • long_name: Zonal Mean Zonal Wind
  • var_id: zmu
  • names: eastward_wind, Zonal Mean Zonal Wind
  • standard_name: atmosphere_hybrid_sigma_pressure_coordinate
  • long_name: hybrid sigma pressure coordinate
  • units: 1
  • var_id: lev
  • names: atmosphere_hybrid_sigma_pressure_coordinate, hybrid sigma pressure coordinate
  • var_id: lat_bnds
  • var_id: lev_bnds
  • var_id: lon_bnds
  • var_id: p0
  • var_id: time_bnds
  • var_id: a
  • units: 1
  • long_name: vertical coordinate formula term: a(k)
  • names: vertical coordinate formula term: a(k)
  • long_name: vertical coordinate formula term: a(k+1/2)
  • var_id: a_bnds
  • units: 1
  • names: vertical coordinate formula term: a(k+1/2)
  • var_id: ap
  • units: Pa
  • long_name: vertical coordinate formula term: ap(k)
  • names: vertical coordinate formula term: ap(k)
  • long_name: vertical coordinate formula term: b(k)
  • var_id: b
  • units: 1
  • names: vertical coordinate formula term: b(k)
  • units: 1
  • long_name: vertical coordinate formula term: b(k+1/2)
  • var_id: b_bnds
  • names: vertical coordinate formula term: b(k+1/2)

Co-ordinate Variables

  • standard_name: latitude
  • var_id: latitude
  • long_name: latitude
  • units: degrees_north
  • names: latitude
  • units: degrees_east
  • standard_name: longitude
  • long_name: longitude
  • var_id: longitude
  • names: longitude
  • long_name: time
  • standard_name: time
  • var_id: time
  • names: time
Temporal Range
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Geographic Extent