Acidity, Sodium, and Bromine concentrations from the Akademii Nauk (AN), ACT_11d, Summit10 (Summit), Tunu, NGT_B19, and NEEM_2011_S1 ice cores, drilled 1993-2011 ...

• Main Author: McConnell, Joe
• Format: Dataset
• Language: English
• Published: NSF Arctic Data Center 2023
• Subjects: ice core; Sodium; Acidity; Bromine; Greenland; Russian Arctic; Akademii Nauk; Summit; Tunu; NGT_B19; ACT_11d; NEEM; Arctic; Sea ice
• Online Access: https://dx.doi.org/10.18739/a2k649v3d; https://arcticdata.io/catalog/view/doi:10.18739/A2K649V3D

This data is supportive of a journal article submitted to Journal of Geophysical Research: Atmospheres, entitled "Implications of Snowpack Reactive Bromine Production for Arctic Ice Core Bromine Preservation" by Zhai et al. Snowpack emissions are recognized as an important source of gas-phase reactive bromine in the Arctic and are necessary to explain ozone depletion events in spring caused by the catalytic destruction of ozone by halogen radicals. Quantifying bromine emissions from snowpack is essential for interpretation of ice-core bromine. We present ice-core bromine records since the pre-industrial (1750 CE) from six Arctic locations and examine potential post-depositional loss of snowpack bromine using a global chemical transport model. Trend analysis of the ice-core records shows that only the high-latitude coastal Akademii Nauk ice core from the Russian Arctic preserves significant trends since pre-industrial times that are consistent with trends in sea ice extent and anthropogenic emissions from ...