### atmosphere_helicity

under discussion
Created: Feb. 8, 2021

Proposer: Emily Schlie, Eric Engle, and the CAMPS team

Proposed Date: 2020-12-22

Change Date: Feb. 8, 2021, 2:56 p.m.

Term: **atmosphere_helicity**

Unit: m2 s-2

One-half the scalar product of the velocity and vorticity vectors, where vorticity refers to the standard name atmosphere_upward_absolute_vorticity. Helicity is proportional to the strength of the flow, the amount of vertical wind shear, and the amount of turning in the flow.

Change Date: Feb. 8, 2021, 3:09 p.m.

Term: **atmosphere_helicity**

Unit: m2 s-2

Unit ref: SQM2

AMIP:

GRIB:

One-half the scalar product of the velocity and vorticity vectors, where vorticity refers to the standard name atmosphere_upward_absolute_vorticity. Helicity is proportional to the strength of the flow, the amount of vertical wind shear, and the amount of turning in the flow.

Change Date: Feb. 8, 2021, 4:32 p.m.

Term: **atmosphere_helicity**

Unit: m2 s-2

Unit ref: SQM2

AMIP:

GRIB:

One-half the scalar product of the air velocity and vorticity vectors, where vorticity refers to the standard name atmosphere_upward_absolute_vorticity. Helicity is proportional to the strength of the flow, the amount of vertical wind shear, and the amount of turning in the flow.