Dataset
Exploring the sensitivity of atmospheric nitrate concentrations to nitric acid uptake rate using the Met Office’s Unified Model: nitrate and nitric acid simulation data
Abstract
This dataset contains nitrate and nitric acid simulation data to explore the sensitivity of atmospheric nitrate concentrations to nitric acid uptake rate using the Met Office’s Unified Model.
The files are seperated into directories by simulation name - 1. A control simulation with no nitrate aerosol (CNTL); 2. A simulation with NH4·NO3 reaching equilibrium instantaneously (INSTANT); 3. A simulation with the HNO3 uptake rate set to 0.193 (FAST); and 4. A simulation with the HNO3 uptake rate 0.001 (SLOW). All simulations are performed with the Met Office Unified Model (UM or MetUM) in an N96L85 resolution.
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/non-commercial-government-licence/version/2/ When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
The data is model output from MetUM simulations performed on the Met Office Cray XC40 supercomputer. The output was then processed and made CF-compliant using Python with the Iris module. The data were sent to the Centre for Environmental Data Analysis (CEDA) for archiving. |
| Data Quality: |
Data are as given by the data provider with quality control flags defined within each file. 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
Citations: 1
The following citations have been automatically harvested from external sources associated with this resource where DOI tracking is possible. As such some citations may be missing from this list whilst others may not be accurate. Please contact the helpdesk to raise any issues to help refine these citation trackings.
| Jones, A.C., Hill, A., Remy, S., Abraham, N.L., Dalvi, M., Hardacre, C., Hewitt, A.J., Johnson, B., Mulcahy, J.P. & Turnock, S.T. (2021) Exploring the sensitivity of atmospheric nitrate concentrations to nitric acid uptake rate using the Met Office’s Unified Model. Atmospheric Chemistry and Physics 21, 15901–15927. https://doi.org/10.5194/acp-21-15901-2021 https://doi.org/10.5194/acp-21-15901-2021 |
Process overview
| Title | Met Office operational unified model (UM) deployed on Met Office Computer network |
| Abstract | This computation involved: Met Office operational unified model (UM) deployed on Met Office Computer network. The Unified Model is the name given to the suite of atmospheric and oceanic numerical modelling software developed and used at the Met Office. The formulation of the model supports global and regional domains and is applicable to a wide range of temporal and spatial scales that allow it to be used for both numerical weather prediction and climate modelling as well as a variety of related research activities. The Unified Model was introduced into operational service in 1992. Since then, both its formulation and capabilities have been substantially enhanced. |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
- units: Pa
- standard_name: air_pressure
- var_id: air_pressure
- long_name: Air pressure on model full-levels
- units: K
- standard_name: air_temperature
- var_id: air_temperature
- long_name: Air temperature
- units: kg kg-1
- long_name: Gaseous HNO3 Mass Mixing Ratio
- standard_name: mass_fraction_of_nitric_acid_in_air
- var_id: mass_fraction_of_nitric_acid_in_air
- units: kg kg-1
- long_name: Gaseous NH3 Mixing Ratio
- standard_name: mass_fraction_of_ammonia_in_air
- var_id: mass_fraction_of_ammonia_in_air
- units: kg kg-1
- standard_name: specific_humidity
- long_name: Specific Humidity
- var_id: specific_humidity
- units: m
- long_name: Surface Altitude
- standard_name: surface_altitude
- var_id: surface_altitude
- units: kg m-3
- long_name: Surface concentration of HNO3
- standard_name: mass_concentration_of_nitric_acid_in_air
- var_id: mass_concentration_of_nitric_acid_in_air
- units: kg m-3
- long_name: Surface concentration of NH3
- standard_name: mass_concentration_of_ammonia_in_air
- var_id: mass_concentration_of_ammonia_in_air
- units: W m-2
- standard_name: toa_incoming_shortwave_flux
- var_id: toa_incoming_shortwave_flux
- long_name: TOA Incident Shortwave Radiation
- units: W m-2
- standard_name: toa_outgoing_longwave_flux
- long_name: TOA Outgoing Longwave Radiation
- var_id: toa_outgoing_longwave_flux
- units: W m-2
- standard_name: toa_outgoing_shortwave_flux
- long_name: TOA Outgoing Shortwave Radiation
- var_id: toa_outgoing_shortwave_flux
- var_id: latitude_bnds
- var_id: latitude_longitude
- units: m
- long_name: level_height
- var_id: level_height
- var_id: level_height_bnds
- var_id: longitude_bnds
- units: 1
- standard_name: model_level_number
- var_id: model_level_number
- var_id: model_level_number_bnds
- long_name: month
- var_id: month
- units: 1
- long_name: pseudo_level
- var_id: pseudo_level
- long_name: season
- var_id: season
- units: 1
- var_id: sigma
- long_name: sigma
- var_id: sigma_bnds
- var_id: time_bnds
- units: 1
- long_name: year
- var_id: year
Co-ordinate Variables
- units: degrees_north
- standard_name: latitude
- var_id: latitude
- units: degrees_east
- standard_name: longitude
- var_id: longitude
- standard_name: time
- var_id: time
Temporal Range
1993-12-01T00:00:00
2013-11-30T23:59:59
Geographic Extent
90.0000° |
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-180.0000° |
180.0000° |
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-90.0000° |