The impact of local surface change in Borneo on atmospheric composition at wider scales: coastal processes, land use change and air quality

J. A. Pyle and N. J. Warwick and N. R. P. Harris and Mohd Radzi Abas and A. T. Archibald and M. J. Ashfold and K. Ashworth and Michael P. Barkley and G. D. Carver and K. Chance and J. R. Dorsey and D. Fowler and S. Gonzi and B. Gostlow and C. N. Hewitt and T. P. Kurosu and J. D. Lee and S. B. Langford and G. Mills and S. Moller and A. R. MacKenzie and A. J. Manning and P. Misztal and Mohd Shahrul Mohd Nadzir and E. Nemitz and H. M. Newton and L. M. O’Brien and Simon Ong and D. Oram and P. I. Palmer and Leong Kok Peng and Siew Moi Phang and R. Pike and T. A. M. Pugh and Noorsaadah Abdul Rahman and A. D. Robinson and Justin Sentian and Azizan Abu Samah and U. Skiba and Huan Eng Ung and Sei Eng Yong and P. J. Young (2011) The impact of local surface change in Borneo on atmospheric composition at wider scales: coastal processes, land use change and air quality. Philosophical Transactions of the Royal Society B: Biological Sciences, 366. pp. 3210-3224. ISSN 0962-8436

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Abstract

We present results from the OP3 campaign in Sabah during 2008 that allow us to study the impact of local emission changes over Borneo on atmospheric composition at the regional and wider scale. OP3 constituent data provide an important constraint on model performance. Treatment of boundary layer processes is highlighted as an important area of model uncertainty. Model studies of land-use change confirm earlier work, indicating that further changes to intensive oil palm agriculture in South East Asia, and the tropics in general, could have important impacts on air quality, with the biggest factor being the concomitant changes in NOx emissions. With the model scenarios used here, local increases in ozone of around 50 per cent could occur. We also report measurements of short-lived brominated compounds around Sabah suggesting that oceanic (and, especially, coastal) emission sources dominate locally. The concentration of bromine in short-lived halocarbons measured at the surface during OP3 amounted to about 7 ppt, setting an upper limit on the amount of these species that can reach the lower stratosphere.

Item Type: Article
Uncontrolled Keywords: Tropospheric ozone , Biogenic organic compounds , Rainforest , Isoprene , Atmospheric modelling
Subjects: Q Science > QC Physics > QC1-999 Physics > QC851-999 Meteorology. Climatology Including the earth's atmosphere
S Agriculture > SD Forestry > SD1-669.5 Forestry > SD390.5-390.7 Forest meteorology. Forest microclimatology
Divisions: FACULTY > Faculty of Science and Natural Resources
Depositing User: DG MASNIAH AHMAD -
Date Deposited: 23 Nov 2021 08:38
Last Modified: 23 Nov 2021 08:38
URI: http://eprints.ums.edu.my/id/eprint/31083

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