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Each Output variable record corresponds to a physical parameter specification.
| Attribute | Value |
|---|---|
| branded_variable_name | ch4_tclm-u-hm-u |
| cell_methods | undef |
| cmip6_frequency | monC |
| cmip6_tables_identifier | Amon (Monthly atmospheric data) |
| cmip7_compound_name | atmosChem.mon.ch4_tclm-u-hm-u |
| cmip7_frequency | mon |
| conditional | True |
| description | Global Mean Mole Fraction of CH4 |
| dimensions | time2 |
| disambiguation | globalClim |
| flag_-_variable_change_since_cmip6 | True |
| modelling_realm | Atmospheric Chemistry |
| name | Amon.ch4globalClim |
| 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 ch4globalClim, not ch4global. If CH4 is spatially nonuniform, omit this field, but report Global Mean Mole Fraction of CH4 (see the table entry before the previous one). 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 Units (from Physical Parameter) - CMIP6:1.00E-09 CMIP7:mol mol-1, CHANGE SINCE CMIP6 in Cell Methods - CMIP6:area: mean time: mean within years time: mean over years CMIP7:height: sum (through atmospheric column) area: sum time: mean within years time: mean over years, CHANGE SINCE CMIP6 in Modeling Realm - primary - CMIP6:atmos, atmosChem CMIP7:atmosChem, CHANGE SINCE CMIP6 in Cell Methods - CMIP6:area: mean time: mean within years time: mean over years CMIP7:height: area: mean time: mean within years time: mean over years (with all samples weighted by the number of moles of air in the sample), |
| provenance | Amon ((isd.003)) |
| spatial_shape | na-na (Global mean or constant) |
| temporal_shape | climatology (Climatological Mean) |
| title | Global Mean Mole Fraction of CH4 |
| type | real |
| uid | a92e3b16-817c-11e6-a4e2-5404a60d96b5 |