Interactive comment on “ A mathematical approach to understanding emergent constraints ” by Femke

1. Comment of the referee: This manuscript is dealing with the problem of the understanding of emergent constraints in projections based on climate models. The main idea is to develop a mathematical framework based on the linear response theory. The approach is applied in the context of several models of increasing complexity. A classification of emergent constraints is also proposed. This is a very interesting approach to the problem that is worth publishing. The organization of the manuscript is however