On the potential fingerprint of the Antarctica ozone hole in ice-core nitrate isotopes: a case study based on a South Pole ice core

• Published in: Atmospheric Chemistry and Physics
• Main Authors: Y. Cao, Z. Jiang, B. Alexander, J. Cole-Dai, J. Savarino, J. Erbland, L. Geng
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2022
• Subjects: Physics; QC1-999; Chemistry; QD1-999; South Pole; Antarc*; Antarctica; ice core; South pole
• Online Access: https://doi.org/10.5194/acp-22-13407-2022; https://doaj.org/article/e0d171d3bf6b4ff4b314db7246d8024c

Column ozone variability has important implications for surface photochemistry and the climate. Ice-core nitrate isotopes are suspected to be influenced by column ozone variability and δ 15 N(NO <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="9pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="53e1f98be2cdf70dbe180d95894fc6b5"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-22-13407-2022-ie00001.svg" width="9pt" height="16pt" src="acp-22-13407-2022-ie00001.png"/></svg:svg> ) has been sought to serve as a proxy of column ozone variability. In this study, we examined the ability of ice-core nitrate isotopes to reflect column ozone variability by measuring δ 15 N(NO <math xmlns="http://www.w3.org/1998/Math/MathML" id="M4" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="9pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="0723f17b5be9fc41c36a5585631feb47"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-22-13407-2022-ie00002.svg" width="9pt" height="16pt" src="acp-22-13407-2022-ie00002.png"/></svg:svg> ) and Δ 17 O(NO <math xmlns="http://www.w3.org/1998/Math/MathML" id="M6" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">3</mn><mo>-</mo></msubsup></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="9pt" height="16pt" class="svg-formula" dspmath="mathimg" ...