Back to variables | Category Index
Each Output variable record corresponds to a physical parameter specification.
| Attribute | Value |
|---|---|
| branded_variable_name | aoanh_tavg-al-hxy-u |
| cell_measures | area: areacella |
| cell_methods | amntrac-twm (Weighted Time Mean by Tracer Mass) |
| cmip6_frequency | mon |
| cmip6_tables_identifier | AERmon (Monthly atmospheric chemistry and aerosol data) |
| cmip7_compound_name | aerosol.aoanh.tavg-al-hxy-u.mon.NH |
| cmip7_frequency | mon |
| description | Fixed surface layer mixing ratio over 30o-50oN (0 ppbv), uniform fixed source (at all levels) everywhere else (source is unspecified but must be constant in space and time and documented). Note that the source could be 1yr/yr, so the tracer concentration provides mean age in years. For method using linearly increasing tracer include a method attribute: "linearly increasing tracer"For method using uniform source (1yr/yr) include a method attribute: "uniform source" |
| dimensions | longitude, latitude, alevel, time |
| flag_-_variable_change_since_cmip6 | True |
| modelling_realm | Aerosol |
| name | AERmon.aoanh |
| physical_parameter | aoanh (Northern Hemisphere Tracer Lifetime) |
| processing_note | CHANGE SINCE CMIP6 in Cell Methods - CMIP6:area: time: mean CMIP7:area: time: mean (weighted by tracer mass), |
| provenance | AERmon ((isd.003)) |
| region | NH |
| spatial_shape | XY-A (Global field on model atmosphere levels) |
| temporal_shape | time-intv (Temporal Interval) |
| title | Northern Hemisphere Tracer Lifetime |
| type | real |
| uid | 3a0a3d38-9c3a-11e6-8d5d-ac72891c3257 |