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Article History

Received: 22 January 2025

Accepted: 28 April 2025

First Online: 20 May 2025

Declarations

:

: Hereby, I /Tayeb Raziei/ consciously assure that for the manuscript " Development and Evaluation of a Principal Component-Based Composite Drought Index Considering Temporal Lag Dependencies among Indices" the following is fulfilled:1) This material is the authors' own original work, which has not been previously published elsewhere.2) The paper is not currently being considered for publication elsewhere.3) The paper reflects the author's own research and analysis in a truthful and complete manner.4) The paper properly credits the meaningful contributions of co-authors and co-researchers.5) All sources used are properly disclosed (correct citation).6) All authors have been personally and actively involved in substantial work leading to the paper and will take public responsibility for its content.

: Not applicable.

: Not applicable.

: The authors have no competing interests to declare that are relevant to the content of this article.