Term: | Mass-balance gradient |

Definition: | The rate of change of mass balance with altitude, that is, the derivative db/dz of the mass-balance profile b (z). If mass balance varies linearly with altitude, the mass-balance gradient will be constant with z; if not, the gradient will vary with z. The mass-balance gradient at the equilibrium-line altitude is called the activity index. |

Created 2022.03.08

Last Modified 2023.03.27

Contributed by GCW
Glossary

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