12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Chemistry/climate feedbacks and biogenic emissions
View graph of relations

« Back

Chemistry/climate feedbacks and biogenic emissions

Research output: Contribution to journalJournal article

Published

  • John A. Pyle
  • N. J. Warwick
  • X. Yang
  • Paul Young
  • Guang Zeng
Journal publication date2007
JournalPhilosophical Transactions of the Royal Society of London A
Journal number1856
Volume365
Number of pages14
Pages1727-1740
Original languageEnglish

Abstract

The oxidizing capacity of the atmosphere is affected by anthropogenic emissions and is projected to change in the future. Model calculations indicate that the change in surface ozone at some locations could be large and have significant implications for human health. The calculations depend on the precise scenarios used for the anthropogenic emissions and on the details of the feedback processes included in the model. One important factor is how natural biogenic emissions will change in the future. We carry out a sensitivity calculation to address the possible increase in isoprene emissions consequent on increased surface temperature in a future climate. The changes in ozone are significant but depend crucially on the background chemical regime. In these calculations, we find that increased isoprene will increase ozone in the Northern Hemisphere but decrease ozone in the tropics. We also consider the role of bromine compounds in tropospheric chemistry and consider cases where, in a future climate, the impact of bromine could change.