Wales PASalawitch RJNicely JMAnderson DCCanty TBaidar SDix BKoenig TKVolkamer RChen DHueg LGTanner DJCuevas CAFernandez RPKinnison DLamarque J-FSaiz-Lopez AAtlas ELHall SRNavarro MAPan LSchauffler SMStell MTilmes SUllman KWeinheimer AJAkiyoshi HChipperfield MDeushi MDhomse SFeng WGraf PHossaini RJockel PMancini EMichou MMorgenstern OOman LPitari GPlummer DRevell LERozanov ESaint-Martin DSchofield RStenke AStone KVisioni DYamashita YZeng G2018-08-092018-08-0920182169-897Xhttp://hdl.handle.net/10092/15759We quantify the stratospheric injection of brominated very short-lived substances (VSLS) based on aircraft observations acquired in winter 2014 above the Tropical Western Pacific during the CONvective TRansport of Active Species in the Tropics (CONTRAST) and the Airborne Tropical TRopopause EXperiment (ATTREX) campaigns. The overall contribution of VSLS to stratospheric bromine was determined to be 5.0 ± 2.1 ppt, in agreement with the 5 ± 3 ppt estimate provided in the 2014 World Meteorological Organization (WMO) Ozone Assessment report (WMO 2014), but with lower uncertainty. Measurements of organic bromine compounds, including VSLS, were analyzed using CFC-11 as a reference stratospheric tracer. From this analysis, 2.9 ± 0.6 ppt of bromine enters the stratosphere via organic source gas injection of VSLS. This value is two times the mean bromine content of VSLS measured at the tropical tropopause, for regions outside of the Tropical Western Pacific, summarized in WMO 2014. A photochemical box model, constrained to CONTRAST observations, was used to estimate inorganic bromine from measurements of BrO collected by two instruments. The analysis indicates that 2.1 ± 2.1 ppt of bromine enters the stratosphere via inorganic product gas injection. We also examine the representation of brominated VSLS within 14 global models that participated in the Chemistry-Climate Model Initiative. The representation of stratospheric bromine in these models generally lies within the range of our empirical estimate. Models that include explicit representations of VSLS compare better with bromine observations in the lower stratosphere than models that utilize longer-lived chemicals as a surrogate for VSLS.enJournal Article2018-06-13Fields of Research::37 - Earth sciences::3701 - Atmospheric sciences::370104 - Atmospheric composition, chemistry and processesField of Research::04 - Earth Sciences::0401 - Atmospheric Sciences::040108 - Tropospheric and Stratospheric PhysicsField of Research::04 - Earth Sciences::0401 - Atmospheric Sciences::040105 - Climatology (excl. Climate Change Processes)https://doi.org/10.1029/2017JD027978