1.3 CMOR Variable: Mole Fraction of CH4 (ch4)

Record Label : ch4

Record Title : Mole Fraction of CH4

Record Identifier : baa9d642-e5dd-11e5-8482-ac72891c3257

Link to a record specifying the structure of the variable : str-a023

MIP Variable : ch4

Deflate: NetCDF compression parameter :

Deflate Level: NetCDF compression parameter :

Shuffle: NetCDF compression parameter :

Indicative priority for this parameter, which is over-ruled by the requestVar priority setting, but provides a reference for organisation of the CMORvariables : 1

Data value type, e.g. float or double : real

Modeling Realm : atmos atmosChem

CMOR Directive Positive :

Section of a table : Amon_oth

Link to MIP table record : Amon

The MIP table : Amon

Provenance : Amon ((isd.003))

Processing Notes : For some simulations (e.g., prescribed concentration pi-control run), this will not vary from one year to the next, and so report instead the variable described in the next table entry. If CH4 is spatially uniform, omit this field, but report Global Mean Mole Fraction of CH4 (see the table entry after the next 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?)?

Provenance Note : Amon_oth

Frequency of Time Steps to be Archived : mon

Row index of entry in source sheet : 75

Description : Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y.

Request variable (carrying priority and link to group) :