New records of very high nitrous oxide fluxes from rice cannot be generalized for water management and climate impacts

This supplement aims to substantiate and expand our comments made in the Letter to the Editor. This format as a separate document was necessary due to the complexity of the issues raised in our comments vis-à-vis the word limit of PNAS Letters (500 words). The text elaborates on individual concerns raised in the letter and also adds new aspects on the research quality that have not yet been discussed in the letter. Moreover, the supplement also includes an outlook on the implications for future mitigation projects at the end of this document.