1.3 CMOR Variable: Northern Hemisphere Tracer Lifetime (aoanh)

Record Label : aoanh

Record Title : Northern Hemisphere Tracer Lifetime

Record Identifier : 3a0a3d38-9c3a-11e6-8d5d-ac72891c3257

Link to a record specifying the structure of the variable : str-d49

MIP Variable : aoanh

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 : aerosol

CMOR Directive Positive :

Section of a table : AERmon-3d

Link to MIP table record : AERmon

The MIP table : AERmon

Provenance : AERmon ((isd.003))

Provenance Note : AERmon-3d

Frequency of Time Steps to be Archived : mon

Row index of entry in source sheet : -1

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"

Request variable (carrying priority and link to group) : aoanh ((isd.005))