Back to variables | Category Index
Each Output variable record corresponds to a physical parameter specification.
| Attribute | Value |
|---|---|
| cell_measures | area: areacella |
| cell_methods | amna-clim (Annual Climatology in Atmosphere) |
| cmip6_frequency | monC |
| cmip6_tables_identifier | Amon (Monthly atmospheric data) |
| cmip7_frequency | mon |
| conditional | True |
| description | Mole fraction is used in the construction mole\_fraction\_of\_X\_in\_Y, where X is a material constituent of Y. |
| dimensions | longitude, latitude, plev19, time2 |
| disambiguation | Clim |
| flag_-_variable_change_since_cmip6 | True |
| modelling_realm | Atmospheric Chemistry |
| name | Amon.ch4Clim |
| physical_parameter | ch4 (Mole Fraction of CH4) |
| processing_note | Report only for simulations (e.g., prescribed concentration pi-control run), in which the CH4 does not vary from one year to the next. Report 12 monthly values, starting with January, even if the values do not vary seasonally. When calling CMOR, identify this variable as ch4global, not ch4. If CH4 is spatially uniform, omit this field, but report Global Mean Mole Fraction of CH4 (see the table entry after the next). Are these the preferred units or should it be a unitless fraction? Should this field be reported instead on model levels? Or should we also require either the vertically integrated mole fraction (or mass?) of this species or the vertically integrated globally averaged mole fraction (or mass?)? CHANGE SINCE CMIP6 in CMIP7 Frequency - CMIP6:monC CMIP7:mon, CHANGE SINCE CMIP6 in Cell Methods - CMIP6:area: mean time: mean within years time: mean over years CMIP7:area: mean where air time: mean within years time: mean over years, |
| provenance | Amon ((isd.003)) |
| spatial_shape | XY-P19 (Global field (19 pressure levels)) |
| temporal_shape | climatology (Climatological Mean) |
| title | Mole Fraction of CH4 |
| type | real |
| uid | a92e26e4-817c-11e6-a4e2-5404a60d96b5 |