I would like to suggest that you make the revisions suggested by the referees. The main revision that would be essential is the first question raised by referee 2 (but it also appeared in both the referee reports for the first version). In particular, please include a discussion comparing the computational costs of the proposed method with those of the constant inflation factor method, both in the context of the model studied here and in the context of operational models. Please also address the second and third points raised by referee 2.

Dear author, both the referees have suggested a few additional changes, which they and I consider to be minor in nature. Thus I recommend this manuscript for publication subject to minor changes. If you choose not to implement some of these changes, please state clearly the reasons for this decision. Thanks.

Dear Authors, thanks for all the modifications you have made. I am happy to recommend the paper for publication.