Editing IPCC:AR6/WGI/Chapter-6 (section)

== 6.3 Evolution of Atmospheric SLCF Abundances ==

<div id="h1-4-siblings" class="h1-siblings"></div>

This section assesses the evolution of atmospheric abundance <sup>[[#footnote-004|1]]</sup> of SLCFs since AR5 based on observations and modelling, our knowledge of SLCF burden and distribution, and our understanding of the trends over longer time scales. In addition to emissions (Section 6.2), atmospheric chemistry (gas and heterogeneous chemistry), deposition (including wet and dry removal), and transport processes play a major role in determining the atmospheric distribution, budget and lifetime of SLCFs. The distribution and lifetime of SLCFs are further influenced by the modulation of chemical and physical processes in response to a changing climate. Therefore, the time evolution of atmospheric abundance of SLCFs is characterized by many complex non-linear interactions occurring at varying temporal and spatial scales. For this Assessment, global-scale, long-term measurements are employed only for a few gaseous SLCFs while for most short-lived species regional-scale observations and global models are relied upon.

<div id="box-6.1" class="h2-container box-container"></div>
<div class="container-box col-regular">