Dataset
piClim-370-AFR126aer data produced by the CESM2 model for the Regional Aerosol Model Intercomparison Project (RAMIP)
Abstract
This record contains data for the piClim-370-AFR126aer experiment simulations from the Regional Aerosol Model Intercomparison Project (RAMIP), produced using CESM2. It contains NetCDF output for a set of experiments with anthropogenic emissions for the year 2050 and fixed, pre-industrial, sea surface temperatures, sea ice extent, and land use. For a full description of the experiments, see: https://gmd.copernicus.org/articles/16/4451/2023/.
The piClim-370-AFR126aer experiment is a fixed sea surface temperature (SST) experiment with 1850 SSTs and sea ice concentrations, following the RFMIP piClim experiment designs. Aerosol and precursor emissions (sulphur dioxide, black carbon and organic carbon) over Africa and the Middle East are taken from year 2050 of SSP1-2.6, while all other anthropogenic emissions and land use are taken from SSP3-7.0 At least 30 years are requested. Africa and the Middle East is the region bounded by 20W, 60E, 35S, and 35N.
The simulations are initialised from the CMIP6 historical experiment. Anthropogenic emissions designed for the ScenarioMIP experiments SSP3-7.0 and SSP1-2.6 are used. All experiments follow SSP3-7.0, with perturbations to regional aerosol and precursor emissions using SSP1-2.6 emissions, following the RAMIP protocol. Data are provided for a subset of CMIP6 variables, following their CMIP6 definitions. Some 3D variables are produced at reduced vertical resolution compared to CMIP6. These are identified with new variable names, as set out in the RAMIP data request: https://gmd.copernicus.org/articles/16/4451/2023/
Acronyms
------------
CESM2: the Community Earth System Model 2 hosted at the National Centre for Atmospheric Research (NCAR) in the US.
SSP1-2.6: experiment based on Shared Socioeconomic Pathway SSP1 with low climate change mitigation and adaptation challenges and RCP2.6, a future pathway with a radiative forcing of 2.6 W/m2 in the year 2100.
SSP3-7.0: experiment based on Shared Socioeconomic Pathway SSP3 which is characterised by high challenges to both mitigation and adaptation and RCP7.0, a future pathway with a radiative forcing of 7.0 W/m2 in the year 2100.
ScenarioMIP: the Scenario Model Intercomparison Project simulates climate outcomes based on alternative plausible future scenarios.
CMIP6: is the sixth phase of the Coupled Model Intercomparison Project, a global collaboration of climate modellers.
RFMIP: The Radiative Forcing Model Intercomparison Project.
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Restricted data: please submit an application using the REQUEST ACCESS link for access.
Use of these data is covered by the following licence(s): https://artefacts.ceda.ac.uk/licences/rugl_versions/rugl_v1-0.pdf When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
The simulations are initialised from the CESM2 Large Ensemble (LE) historical experiments. The baseline SSP370 RAMIP experiment comes directly from the CESM2-LE project. In particular, CESM2 RAMIP uses 10 of the macroperturbation runs (i.e., each ensemble member is initialized from a different year in the preindustrial control simulation) that use an 11-year running mean filter to smooth the CMIP6 biomass burning emissions, including members Anthropogenic emissions designed for the ScenarioMIP experiments SSP3-7.0 and SSP1-2.6 are used. All experiments follow SSP3-7.0, with perturbations to regional aerosol and precursor emissions using SSP1-2.6 emissions, following the RAMIP protocol. Data are provided for a subset of CMIP6 variables, following their CMIP6 definitions. Some 3D variables are produced at reduced vertical resolution compared to CMIP6. These are identified with new variable names, as set out in the RAMIP data request: https://gmd.copernicus.org/articles/16/4451/2023/ |
| Data Quality: |
Quality control checks (CEDA-CC and CF compliance) were performed by the Centre for Environmental Data Analysis (CEDA) to ensure that the data meets the RAMIP and CMIP6Plus metadata requirements.
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| File Format: |
NetCDF
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Process overview
| Title | CESM2 |
| Abstract | The CESM2 climate model, released in 2018, includes the following components: For CESM2-LE, the model was run by the National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, 1850 Table Mesa Drive, Boulder, CO 80305, USA (NCAR) in native nominal resolutions: aerosol: 100 km, atmos: 100 km, atmosChem: 100 km, land: 100 km, landIce: 5 km, ocean: 100 km, ocnBgchem: 100 km, seaIce: 100 km. For RAMIP, the model was run by the University of California Riverside at NCAR using the cheyenne supercomputer using the same native nominal resolutions. |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
- units: kg kg-1
- var_id: mmrso4s
- standard_name: mass_fraction_of_sulfate_dry_aerosol_particles_at_the_surface
- long_name: Aerosol Sulfate Mass Mixing Ratio at the surface
- units: K
- standard_name: air_temperature
- var_id: ta
- long_name: Air Temperature
- units: 1
- var_id: abs550aer
- long_name: Ambient Aerosol Absorption Optical Thickness at 550nm
- standard_name: atmosphere_absorption_optical_thickness_due_to_ambient_aerosol_particles
- units: 1
- var_id: od550aer
- long_name: Ambient Aerosol Optical Thickness at 550nm
- standard_name: atmosphere_optical_thickness_due_to_ambient_aerosol_particles
- units: 1
- standard_name: atmosphere_optical_thickness_due_to_black_carbon_ambient_aerosol
- var_id: od550bc
- long_name: Black Carbon Optical Thickness at 550nm
- units: m
- standard_name: atmosphere_boundary_layer_thickness
- long_name: Boundary Layer Depth
- var_id: bldep
- units: m-3
- standard_name: number_concentration_of_cloud_liquid_water_particles_in_air
- var_id: cdnc
- long_name: Cloud Liquid Droplet Number Concentration
- units: m
- long_name: Cloud-Top Effective Droplet Radius
- var_id: reffclwtop
- standard_name: effective_radius_of_cloud_liquid_water_particles_at_liquid_water_cloud_top
- units: m-2
- long_name: Column Integrated Cloud Droplet Number
- standard_name: atmosphere_number_content_of_cloud_droplets
- var_id: cldnvi
- units: kg m-2
- var_id: clwvi
- long_name: Condensed Water Path
- standard_name: atmosphere_mass_content_of_cloud_condensed_water
- units: kg m-2 s-1
- long_name: Dry Deposition Rate of Dust
- var_id: drydust
- standard_name: minus_tendency_of_atmosphere_mass_content_of_dust_dry_aerosol_particles_due_to_dry_deposition
- units: kg kg-1
- var_id: mmrdusts
- standard_name: mass_fraction_of_dust_dry_aerosol_particles_at_the_surface
- long_name: Dust Aerosol Mass Mixing Ratio at the surface
- units: 1
- var_id: od550dust
- long_name: Dust Optical Thickness at 550nm
- standard_name: atmosphere_optical_thickness_due_to_dust_ambient_aerosol_particles
- units: m s-1
- standard_name: eastward_wind
- var_id: uas
- long_name: Eastward Near-Surface Wind
- units: m s-1
- standard_name: eastward_wind
- var_id: ua
- long_name: Eastward Wind
- units: kg kg-1
- var_id: mmrbcs
- standard_name: mass_fraction_of_elemental_carbon_dry_aerosol_particles_at_the_surface
- long_name: Elemental Carbon Mass Mixing Ratio at the surface
- units: kg m-2 s-1
- var_id: evspsbl
- long_name: Evaporation Including Sublimation and Transpiration
- standard_name: water_evapotranspiration_flux
- units: m
- standard_name: geopotential_height
- var_id: zg
- long_name: Geopotential Height
- units: kg m-2
- long_name: Ice Water Path
- var_id: clivi
- standard_name: atmosphere_mass_content_of_cloud_ice
- units: K
- standard_name: air_temperature
- var_id: tas
- long_name: Near-Surface Air Temperature
- standard_name: relative_humidity
- units: %
- long_name: Near-Surface Relative Humidity
- var_id: hurs
- units: m s-1
- standard_name: northward_wind
- var_id: vas
- long_name: Northward Near-Surface Wind
- units: m s-1
- standard_name: northward_wind
- var_id: va
- long_name: Northward Wind
- units: Pa s-1
- standard_name: lagrangian_tendency_of_air_pressure
- var_id: wap
- long_name: Omega (=dp/dt)
- units: kg kg-1
- var_id: mmrpm2p5s
- standard_name: mass_fraction_of_pm2p5_dry_aerosol_particles_at_the_surface
- long_name: PM2.5 Mass Mixing Ratio at the surface
- units: 1
- var_id: od550soa
- standard_name: atmosphere_optical_thickness_due_to_particulate_organic_matter_ambient_aerosol_particles
- long_name: Particulate Organic Aerosol Optical Depth at 550nm
- units: %
- standard_name: cloud_area_fraction_in_atmosphere_layer
- var_id: cl
- long_name: Percentage Cloud Cover
- var_id: pr
- units: kg m-2 s-1
- standard_name: precipitation_flux
- long_name: Precipitation
- units: nm
- var_id: wavelength
- standard_name: radiation_wavelength
- long_name: Radiation Wavelength 550 nanometers
- units: Pa
- var_id: psl
- long_name: Sea Level Pressure
- standard_name: air_pressure_at_mean_sea_level
- units: kg kg-1
- var_id: mmrsss
- standard_name: mass_fraction_of_sea_salt_dry_aerosol_particles_at_the_surface
- long_name: Sea-Salt Aerosol Mass Mixing Ratio at the surface
- units: kg kg-1
- var_id: mmrsoas
- standard_name: mass_fraction_of_secondary_particulate_organic_matter_dry_aerosol_particles_at_the_surface
- long_name: Secondary Organic Aerosol Mass Mixing Ratio at the surface
- units: kg m-2 s-1
- standard_name: snowfall_flux
- var_id: prsn
- long_name: Snowfall Flux
- units: 1
- standard_name: specific_humidity
- var_id: hus
- long_name: Specific Humidity
- units: 1
- var_id: od550so4
- standard_name: atmosphere_optical_thickness_due_to_sulfate_ambient_aerosol_particles
- long_name: Sulfate Aerosol Optical Depth at 550nm
- units: Pa
- standard_name: surface_air_pressure
- var_id: ps
- long_name: Surface Air Pressure
- units: W m-2
- standard_name: surface_downwelling_shortwave_flux_in_air_assuming_clear_sky
- var_id: rsdscs
- long_name: Surface Downwelling Clear-Sky Shortwave Radiation
- units: W m-2
- standard_name: surface_downwelling_longwave_flux_in_air
- var_id: rlds
- long_name: Surface Downwelling Longwave Radiation
- units: W m-2
- standard_name: surface_downwelling_shortwave_flux_in_air
- var_id: rsds
- long_name: Surface Downwelling Shortwave Radiation
- units: K
- standard_name: surface_temperature
- var_id: ts
- long_name: Surface Temperature
- var_id: hfls
- units: W m-2
- standard_name: surface_upward_latent_heat_flux
- long_name: Surface Upward Latent Heat Flux
- units: W m-2
- standard_name: surface_upward_sensible_heat_flux
- var_id: hfss
- long_name: Surface Upward Sensible Heat Flux
- units: W m-2
- standard_name: surface_upwelling_shortwave_flux_in_air_assuming_clear_sky
- var_id: rsuscs
- long_name: Surface Upwelling Clear-Sky Shortwave Radiation
- units: W m-2
- long_name: Surface Upwelling Longwave Radiation
- standard_name: surface_upwelling_longwave_flux_in_air
- var_id: rlus
- units: W m-2
- long_name: Surface Upwelling Shortwave Radiation
- standard_name: surface_upwelling_shortwave_flux_in_air
- var_id: rsus
- units: W m-2
- standard_name: toa_incoming_shortwave_flux
- var_id: rsdt
- long_name: TOA Incident Shortwave Radiation
- var_id: rlutcs
- units: W m-2
- standard_name: toa_outgoing_longwave_flux_assuming_clear_sky
- long_name: TOA Outgoing Clear-Sky Longwave Radiation
- var_id: rsutcs
- units: W m-2
- standard_name: toa_outgoing_shortwave_flux_assuming_clear_sky
- long_name: TOA Outgoing Clear-Sky Shortwave Radiation
- var_id: rlut
- units: W m-2
- standard_name: toa_outgoing_longwave_flux
- long_name: TOA Outgoing Longwave Radiation
- var_id: rsut
- units: W m-2
- standard_name: toa_outgoing_shortwave_flux
- long_name: TOA Outgoing Shortwave Radiation
- units: %
- standard_name: cloud_area_fraction
- var_id: clt
- long_name: Total Cloud Cover Percentage
- units: kg m-2 s-1
- long_name: Total Emission Rate of Dust
- var_id: emidust
- standard_name: tendency_of_atmosphere_mass_content_of_dust_dry_aerosol_particles_due_to_emission
- units: kg kg-1
- var_id: mmroas
- standard_name: mass_fraction_of_particulate_organic_matter_dry_aerosol_particles_at_the_surface
- long_name: Total Organic Aerosol Mass Mixing Ratio at the surface
- units: 1
- var_id: od550oa
- standard_name: atmosphere_optical_thickness_due_to_particulate_organic_matter_ambient_aerosol_particles
- long_name: Total Organic Aerosol Optical Depth at 550nm
- units: kg m-2 s-1
- long_name: Wet Deposition Rate of Dust
- var_id: wetdust
- standard_name: minus_tendency_of_atmosphere_mass_content_of_dust_dry_aerosol_particles_due_to_wet_deposition
- units: 1
- standard_name: atmosphere_hybrid_sigma_pressure_coordinate
- var_id: lev_bnds
- units: m
- standard_name: height
- var_id: height
- long_name: height
- units: 1
- standard_name: atmosphere_hybrid_sigma_pressure_coordinate
- long_name: hybrid sigma pressure coordinate
- var_id: lev
- var_id: lat_bnds
- var_id: lon_bnds
- units: Pa
- standard_name: air_pressure
- long_name: pressure
- var_id: plev
- var_id: time_bnds
- var_id: a
- long_name: vertical coordinate formula term: a
- long_name: vertical coordinate formula term: a(k+1/2)
- var_id: a_bnds
- var_id: b
- long_name: vertical coordinate formula term: b
- long_name: vertical coordinate formula term: b(k+1/2)
- var_id: b_bnds
- units: Pa
- var_id: p0
- long_name: vertical coordinate formula term: reference pressure
- standard_name: reference_air_pressure_for_atmosphere_vertical_coordinate
Co-ordinate Variables
- units: degrees_north
- standard_name: latitude
- var_id: lat
- long_name: Latitude
- units: degrees_east
- standard_name: longitude
- var_id: lon
- long_name: Longitude
- long_name: time
- standard_name: time
- var_id: time
- units: days
Temporal Range
0001-01-01T00:00:00
0001-12-31T00:00:00
Geographic Extent
90.0000° |
||
-180.0000° |
180.0000° |
|
-90.0000° |