“…While vulnerability is a contested concept (Adger, 2006), it is most commonly subdivided into exposure, sensitivity, and adaptive capacity (Muccione et al, 2017; ND-GAIN, 2013). However, adaptive capacity can largely be seen as a matter of resource availability and thus overlaps strongly with the recipient need model of conventional development aid (Betzold and Weiler, 2018), and sensitivity is, to a large degree, sector-specific (Weiler, 2019). Thus, for the purpose of this article, we define additionality in the area of adaptation aid as that part of aid flows that are provided because countries are physically exposed to climate impacts, that is, “the physical factors external to the system that contribute to vulnerability” (ND-GAIN, n.d.) or the “degree to which a system experiences environmental stress” (Adger, 2006: 270).…”