Halogens play important roles in the ozone chemistry of both the stratosphere and troposphere. Bromine can also affect the deposition rate of mercury in the atmosphere. In particulate form halogens can react directly with ozone and could serve as reservoirs for gas-phase reactive halogen species. However, quantitative measurements of particulate halogens on a global scale over remote areas are rare, especially in the upper troposphere and the lower stratosphere. Here we report particulate bromine measurements with a customized University of Colorado high-resolution aerosol mass spectrometer (CU-HR-AMS) together with gas phase inorganic bromine from multiple aircraft campaigns including the NASA ATom mission, and ARCTAS missions. We also discuss 1) AMS response to particulate halogens and quantification method 2) the total inorganic bromine gas budget estimated by a box model 3) sources of bromine in the free troposphere and polar regions and their implications for ozone chemistry 4) evaluate the bromine estimation from the current GEOS-Chem model. These results will provide valuable constraints on the bromine budget and chemistry in chemical transport models.