Dataset
Monthly mean climate data from a transient simulation with the Whole Atmosphere Community Climate Model eXtension (WACCM-X) from 2015 to 2070
Abstract
This dataset comprises monthly mean data from a global, transient simulation with the Whole Atmosphere Community Climate Model eXtension (WACCM-X) from 2015 to 2070. WACCM-X is a global atmosphere model covering altitudes from the surface up to ~500 km, i.e., including the troposphere, stratosphere, mesosphere and thermosphere. WACCM-X version 2.0 (Liu et al., 2018) was used, part of the Community Earth System Model (CESM) release 2.1.0 (http://www.cesm.ucar.edu/models/cesm2) made available by the National Center for Atmospheric Research. The model was run in free-running mode with a horizontal resolution of 1.9 degrees latitude and 2.5 degrees longitude (giving 96 latitude points and 144 longitude points) and 126 vertical levels. Further description of the model and simulation setup is provided by Cnossen (2022) and references therein. A large number of variables is included on standard monthly mean output files on the model grid, while selected variables are also offered interpolated to a constant height grid or vertically integrated in height (details below). Zonal mean and global mean output files are included as well.
The data are provided in NetCDF format and file names have the following structure:
f.e210.FXHIST.f19_f19.h1a.cam.h0.[YYYY]-[MM][DFT].nc
where [YYYY] gives the year with 4 digits, [MM] gives the month (2 digits) and [DFT] specifies the data file type. The following data file types are included:
1) Monthly mean output on the full grid for the full set of variables; [DFT] =
2) Zonal mean monthly mean output for the full set of variables; [DFT] = _zm
3) Global mean monthly mean output for the full set of variables; [DFT] = _gm
4) Height-interpolated/-integrated output on the full grid for selected variables; [DFT] = _ht
A cos(latitude) weighting was used when calculating the global means.
Data were interpolated to a set of constant heights (61 levels in total) using the Z3GM variable (for variables output on midpoints, with 'lev' as the vertical coordinate) or the Z3GMI variable (for variables output on interfaces, with ilev as the vertical coordinate) stored on the original output files (type 1 above). Interpolation was done separately for each longitude, latitude and time.
Mass density (DEN [g/cm3]) was calculated from the M_dens, N2_vmr, O2, and O variables on the original data files before interpolation to constant height levels.
The Joule heating power QJ [W/m3] was calculated using
Q_J = (sigma_P*B^2)*((u_i - U_n)^2 + (v_i-v_n)^2 + (w_i-w_n)^2)
with sigma_P = Pedersen conductivity[S], B = geomagnetic field strength [T], ui, vi, and wi = zonal, meridional, and vertical ion velocities [m/s] and un, vn, and wn = neutral wind velocities [m/s]. QJ was integrated vertically in height (using a 2.5 km height grid spacing rather than the 61 levels on output file type 4) to give the JHH variable on the type 4 data files. The QJOULE variable also given is the Joule heating rate [K/s] at each of the 61 height levels.
All data are provided as monthly mean files with one time record per file, giving 672 files for each data file type for the period 2015-2070 (56 years).
References:
Cnossen, I. (2022), A realistic projection of climate change in the upper atmosphere into the 21st century, in preparation.
Liu, H.-L., C.G. Bardeen, B.T. Foster, et al. (2018), Development and validation of the Whole Atmosphere Community Climate Model with thermosphere and ionosphere extension (WACCM-X 2.0), Journal of Advances in Modeling Earth Systems, 10(2), 381-402, doi:10.1002/2017ms001232.
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: |
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(s): http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
The data were generated with the Whole Atmosphere Community Climate Model eXtension (WACCM-X) version 2.0 (Liu et al., 2018), part of the Community Earth System Model (CESM) release 2.1.0 (http://www.cesm.ucar.edu/models/cesm2) by Ingrid Cnossen. The WACCM-X simulation was run on the ARCHER UK National Supercomputing Service (http://www.archer.ac.uk) in 2019-2020. Data were then submitted to the CEDA for archival. |
| Data Quality: |
Data are as given by the data provider, no quality control has been performed by the Centre for Environmental Data Analysis (CEDA)
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| File Format: |
Data are NetCDF formatted.
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Related Documents
Process overview
| Title | Transient simulation with the Whole Atmosphere Community Climate Model eXtension (WACCM-X) version 2.0, part of the Community Earth System Model (CESM) release 2.1.0, from 1950 to 2015 |
| Abstract | The data were generated with the Whole Atmosphere Community Climate Model eXtension (WACCM-X) version 2.0 (Liu et al., 2018), part of the Community Earth System Model (CESM) release 2.1.0 (http://www.cesm.ucar.edu/models/cesm2). WACCM-X is a global model of the atmosphere from the surface up to ~500 km altitude and was run in free-running mode with a horizontal resolution of 1.9degrees latitude and 2.5 degrees longitude (giving 96 latitude points and 144 longitude points) and 126 vertical levels from Jan 2015 to 2070. This is an extension of the simulation by Cnossen (2020) from 1950 to 2015. For 2015-2070, lower boundary forcings and chemical emissions followed Shared Socio-economic Pathway (SSP) 2-4.5, a moderate scenario, comparable to Representative Concentration Pathway (RCP) 4.5 (O'Neill et al., 2016). The main magnetic field was specified according to the prediction by Aubert (2015). Solar radiative and particle forcings were specified according to the reference scenario of the Climate Model Intercomparison Project (CMIP) 6 recommendation by Matthes et al. (2017). The simulation therefore includes all known drivers of long-term change in the upper atmosphere and for all of these realistic long-term variations were adopted, offering a plausible, realistic estimate of the future climate of the upper atmosphere. For further details see Cnossen (2022). References: See related documents |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
- long_name: 10.7 cm solar radio flux (F10.7)
- units: 10^-22 W m^-2 Hz^-1
- var_id: f107
- long_name: 81-day centered mean of 10.7 cm solar radio flux (F10.7)
- var_id: f107a
- units: Pa
- long_name: Beres (deep) Eastward Reynolds stress
- var_id: BTAUE
- units: Pa
- long_name: Beres (deep) Northward Reynolds stress
- var_id: BTAUN
- units: Pa
- long_name: Beres (deep) Southward Reynolds stress
- var_id: BTAUS
- units: K/s
- long_name: Beres (deep) T tendency - gravity wave spectrum
- var_id: BTTGWSPEC
- long_name: Beres (deep) U tendency - gravity wave spectrum
- units: m/s2
- var_id: BUTGWSPEC
- units: m/s2
- long_name: Beres (deep) V tendency - gravity wave spectrum
- var_id: BVTGWSPEC
- units: Pa
- long_name: Beres (deep) Westward Reynolds stress
- var_id: BTAUW
- units: Pa
- long_name: C&M Eastward Reynolds stress
- var_id: TAUE
- units: Pa
- long_name: C&M Northward Reynolds stress
- var_id: TAUN
- units: Pa
- long_name: C&M Southward Reynolds stress
- var_id: TAUS
- units: K/s
- long_name: C&M T tendency - gravity wave spectrum
- var_id: TTGWSPEC
- units: m/s2
- long_name: C&M U tendency - gravity wave spectrum
- var_id: UTGWSPEC
- units: m/s2
- long_name: C&M V tendency - gravity wave spectrum
- var_id: VTGWSPEC
- units: Pa
- long_name: C&M Westward Reynolds stress
- var_id: TAUW
- units: mol/mol
- long_name: CFC11 concentration
- var_id: CFC11
- units: mol/mol
- long_name: CFC12 concentration
- var_id: CFC12
- var_id: CH4
- units: mol/mol
- long_name: CH4 concentration
- var_id: CO2
- units: mol/mol
- long_name: CO2 concentration
- units: K/s
- long_name: CO2 cooling
- var_id: QCO2
- units: K/s
- long_name: Cooling to Space
- var_id: QHC2S
- var_id: ap
- long_name: Daily planetary A geomagnetic index
- long_name: Daily planetary K geomagnetic index
- var_id: kp
- long_name: EX: Zonal component of Electric Field
- units: V/m
- var_id: EX
- units: V/m
- long_name: EY: Meridional component of Electric Field
- var_id: EY
- units: V/m
- long_name: EZ: Vertical component of Electric Field
- var_id: EZ
- long_name: Effective Kzz due to diffusion by gravity waves
- units: M2/S
- var_id: EKGW
- long_name: Electron Column Density
- units: TECU
- var_id: ElecColDens
- units: K
- long_name: Electron Temperature
- var_id: TElec
- units: degrees
- long_name: First co-latitude of electro-potential critical angle
- var_id: colat_crit1
- long_name: Frontogenesis function at gws src level
- units: K^2/M^2/S
- var_id: FRONTGFA
- units: m
- long_name: Geometric height
- var_id: Z3GM
- units: m
- long_name: Geometric height (Interfaces)
- var_id: Z3GMI
- units: m
- long_name: Geopotential Height (above sea level)
- var_id: Z3
- long_name: Hall conductivity
- units: siemens/m
- var_id: SIGMAHAL
- units: km
- long_name: Height of the F2 Layer
- var_id: HMF2
- units: K
- long_name: Ion Temperature
- var_id: TIon
- units: K/s
- long_name: Joule Heat
- var_id: QJOULE
- units: degrees
- long_name: Magnetic latitude at each geographic coordinate
- var_id: ALATM
- units: degrees
- long_name: Magnetic longitude at each geographic coordinate
- var_id: ALONM
- long_name: Mass density
- units: g cm^{-3}
- var_id: DEN
- units: K/s
- long_name: Merged LW heating: QRL+QRLNLTE
- var_id: QRL_TOT
- units: K/s
- long_name: Merged SW heating: QRS+QCP+QRS_EUV+QRS_CO2NIR+QRS_AUR+QTHERMAL
- var_id: QRS_TOT
- units: N/m2
- long_name: Meridional gravity wave surface stress
- var_id: TAUGWY
- units: m/s
- long_name: Meridional wind
- var_id: V
- units: m/s
- var_id: V_08_COS
- long_name: Meridional wind 8hr. cos coeff.
- units: m/s
- var_id: V_08_SIN
- long_name: Meridional wind 8hr. sin coeff.
- units: m/s
- long_name: Meridional wind 12hr. cos coeff.
- var_id: V_12_COS
- units: m/s
- long_name: Meridional wind 12hr. sin coeff.
- var_id: V_12_SIN
- units: m/s
- long_name: Meridional wind 24hr. cos coeff.
- var_id: V_24_COS
- units: m/s
- long_name: Meridional wind 24hr. sin coeff.
- var_id: V_24_SIN
- units: mol/mol
- long_name: N2p concentration
- var_id: N2p
- var_id: NO
- units: mol/mol
- long_name: NO concentration
- units: K/s
- long_name: NO cooling
- var_id: QNO
- units: mol/mol
- long_name: NOp concentration
- var_id: NOp
- units: mol/mol
- long_name: O concentration
- var_id: O
- long_name: O2 concentration
- units: mol/mol
- var_id: O2
- units: mol/mol
- long_name: O2p concentration
- var_id: O2p
- var_id: O3
- units: mol/mol
- long_name: O3 concentration
- units: K/s
- long_name: O3 cooling
- var_id: QO3
- units: mol/mol
- long_name: Op concentration
- var_id: Op
- long_name: POTEN: Electric Potential
- units: Volts
- var_id: POTEN
- units: cm-3
- long_name: Peak Density of the F2 Layer
- var_id: NMF2
- units: siemens/m
- long_name: Pederson conductivity
- var_id: SIGMAPED
- long_name: Pervious day 10.7 cm solar radio flux (F10.7)
- var_id: f107p
- units: degrees
- long_name: Second co-latitude of electro-potential critical angle
- var_id: colat_crit2
- units: Pa
- long_name: Surface pressure
- var_id: PS
- units: K/s
- long_name: T tendency - orographic gravity wave drag
- var_id: TTGWORO
- units: K
- long_name: Temperature
- var_id: T
- units: K
- var_id: T_08_COS
- long_name: Temperature 8hr. cos coeff.
- units: K
- var_id: T_08_SIN
- long_name: Temperature 8hr. sin coeff.
- units: K
- long_name: Temperature 12hr. cos coeff.
- var_id: T_12_COS
- units: K
- long_name: Temperature 12hr. sin coeff.
- var_id: T_12_SIN
- units: K
- long_name: Temperature 24hr. cos coeff.
- var_id: T_24_COS
- units: K
- long_name: Temperature 24hr. sin coeff.
- var_id: T_24_SIN
- units: N/m2
- long_name: Total stress from original OGW scheme
- var_id: TAUAORO
- units: m/s2
- long_name: U tendency - orographic gravity wave drag
- var_id: UTGWORO
- units: m/s
- var_id: UI
- long_name: UI Zonal ion drift from edynamo
- units: m/s2
- long_name: V tendency - orographic gravity wave drag
- var_id: VTGWORO
- units: m/s
- var_id: VI
- long_name: VI Meridional ion drift from edynamo
- units: Pa/s
- var_id: OMEGA
- long_name: Vertical velocity (pressure)
- units: W/m^2
- long_name: Vertically integrated Joule heating
- var_id: JHH
- units: m/s
- var_id: WI
- long_name: WI Vertical ion drift from edynamo
- units: N/m2
- long_name: Zonal gravity wave surface stress
- var_id: TAUGWX
- units: m/s
- long_name: Zonal wind
- var_id: U
- units: m/s
- var_id: U_08_COS
- long_name: Zonal wind 8hr. cos coeff.
- units: m/s
- var_id: U_08_SIN
- long_name: Zonal wind 8hr. sin coeff.
- units: m/s
- long_name: Zonal wind 12hr. cos coeff.
- var_id: U_12_COS
- units: m/s
- long_name: Zonal wind 12hr. sin coeff.
- var_id: U_12_SIN
- units: m/s
- long_name: Zonal wind 24hr. cos coeff.
- var_id: U_24_COS
- units: m/s
- long_name: Zonal wind 24hr. sin coeff.
- var_id: U_24_SIN
- long_name: base date (YYYYMMDD)
- var_id: nbdate
- long_name: base day
- var_id: ndbase
- long_name: ch4 volume mixing ratio
- var_id: ch4vmr
- long_name: co2 volume mixing ratio
- var_id: co2vmr
- long_name: current date (YYYYMMDD)
- var_id: date
- long_name: current day (from base day)
- var_id: ndcur
- long_name: current seconds of current date
- var_id: datesec
- long_name: current seconds of current day
- var_id: nscur
- long_name: current timestep
- var_id: nsteph
- var_id: date_written
- long_name: e Number Density (sum of O2+,NO+,N2+,O+)
- units: cm^3
- var_id: EDens
- long_name: f11 volume mixing ratio
- var_id: f11vmr
- long_name: f12 volume mixing ratio
- var_id: f12vmr
- var_id: height
- units: km
- long_name: geometric height
- long_name: hybrid A coefficient at layer interfaces
- var_id: hyai
- long_name: hybrid A coefficient at layer midpoints
- var_id: hyam
- long_name: hybrid B coefficient at layer interfaces
- var_id: hybi
- long_name: hybrid B coefficient at layer midpoints
- var_id: hybm
- units: hPa
- standard_name: atmosphere_hybrid_sigma_pressure_coordinate
- var_id: ilev
- long_name: hybrid level at interfaces (1000*(A+B))
- units: hPa
- standard_name: atmosphere_hybrid_sigma_pressure_coordinate
- var_id: lev
- long_name: hybrid level at midpoints (1000*(A+B))
- long_name: invariant density
- var_id: N2_vmr
- units: mole/mole
- units: degrees_north
- long_name: latitude
- var_id: lat
- var_id: gw
- long_name: latitude weights
- units: degrees_east
- long_name: longitude
- var_id: lon
- long_name: n2o volume mixing ratio
- var_id: n2ovmr
- units: mol/mol
- long_name: nox (N+NO+NO2)
- var_id: NOX
- units: mol/mol
- long_name: noy = total nitrogen (N+NO+NO2+NO3+2N2O5+HNO3+HO2NO2+ORGNOY+NH4NO3
- var_id: NOY
- units: Pa
- long_name: reference pressure
- var_id: P0
- long_name: seconds of base date
- var_id: nbsec
- long_name: seconds of base day
- var_id: nsbase
- long_name: time
- var_id: time
- units: days
- var_id: time_bnds
- long_name: time interval endpoints
- var_id: time_written
- units: s
- long_name: timestep
- var_id: mdt
- units: K/s
- long_name: total auroral heating rate
- var_id: QRS_AUR
- units: W/m2
- long_name: total solar irradiance
- var_id: sol_tsi
- units: Pa/s
- var_id: OMEGA_08_COS
- long_name: vertical pressure velocity 8hr. cos coeff.
- units: Pa/s
- var_id: OMEGA_08_SIN
- long_name: vertical pressure velocity 8hr. sin coeff.
- units: Pa/s
- long_name: vertical pressure velocity 12hr. cos coeff.
- var_id: OMEGA_12_COS
- units: Pa/s
- long_name: vertical pressure velocity 12hr. sin coeff.
- var_id: OMEGA_12_SIN
- units: Pa/s
- long_name: vertical pressure velocity 24hr. cos coeff.
- var_id: OMEGA_24_COS
- units: Pa/s
- long_name: vertical pressure velocity 24hr. sin coeff.
- var_id: OMEGA_24_SIN
Co-ordinate Variables
Temporal Range
2015-01-01T00:00:00
2070-12-31T00:00:00
Geographic Extent
90.0000° |
||
-180.0000° |
180.0000° |
|
-90.0000° |