title: The impact of local surface changes in Borneo on atmospheric composition at wider spatial scales: coastal processes, land-use change and air quality.
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 NO(x) 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.
authors: National Centre for Atmospheric Science, NCAS, UK. john.pyle@atm.ch.cam.ac.uk
authors: J A
authors: JA
authors: Pyle
authors: N J
authors: NJ
authors: Warwick
authors: N R P
authors: NR
authors: Harris
authors: Mohd Radzi
authors: MR
authors: Abas
authors: A T
authors: AT
authors: Archibald
authors: M J
authors: MJ
authors: Ashfold
authors: K
authors: K
authors: Ashworth
authors: Michael P
authors: MP
authors: Barkley
authors: G D
authors: GD
authors: Carver
authors: K
authors: K
authors: Chance
authors: J R
authors: JR
authors: Dorsey
authors: D
authors: D
authors: Fowler
authors: S
authors: S
authors: Gonzi
authors: B
authors: B
authors: Gostlow
authors: C N
authors: CN
authors: Hewitt
authors: T P
authors: TP
authors: Kurosu
authors: J D
authors: JD
authors: Lee
authors: S B
authors: SB
authors: Langford
authors: G
authors: G
authors: Mills
authors: S
authors: S
authors: Moller
authors: A R
authors: AR
authors: MacKenzie
authors: A J
authors: AJ
authors: Manning
authors: P
authors: P
authors: Misztal
authors: Mohd Shahrul Mohd
authors: MS
authors: Nadzir
authors: E
authors: E
authors: Nemitz
authors: H M
authors: HM
authors: Newton
authors: L M
authors: LM
authors: O'Brien
authors: Simon
authors: S
authors: Ong
authors: D
authors: D
authors: Oram
authors: P I
authors: PI
authors: Palmer
authors: Leong Kok
authors: LK
authors: Peng
authors: Siew Moi
authors: SM
authors: Phang
authors: R
authors: R
authors: Pike
authors: T A M
authors: TA
authors: Pugh
authors: Noorsaadah Abdul
authors: NA
authors: Rahman
authors: A D
authors: AD
authors: Robinson
authors: J
authors: J
authors: Sentian
authors: Azizan Abu
authors: AA
authors: Samah
authors: U
authors: U
authors: Skiba
authors: Huan Eng
authors: HE
authors: Ung
authors: Sei Eng
authors: SE
authors: Yong
authors: P J
authors: PJ
authors: Young
mesh_terms: D000383:Agriculture; D000397:Air Pollution / Q000032:analysis*; D028023:Arecaceae / Q000737:chemistry* / Q000502:physiology; D001272:Atmosphere / Q000032:analysis / Q000737:chemistry*; D001893:Borneo; D001966:Bromine / Q000737:chemistry; D002070:Butadienes / Q000737:chemistry; D002224:Carbanilides / Q000032:analysis / Q000737:chemistry; D003198:Computer Simulation; D005557:Formaldehyde / Q000737:chemistry; D045782:Hemiterpenes / Q000737:chemistry; D008296:Malaysia; D009589:Nitrogen Oxides / Q000737:chemistry; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry; D010420:Pentanes / Q000737:chemistry; D014197:Trees / Q000737:chemistry* / Q000502:physiology; D014329:Tropical Climate; D055549:Volatile Organic Compounds / Q000737:chemistry
chemical_list: D002070:Butadienes; D002224:Carbanilides; D045782:Hemiterpenes; D009589:Nitrogen Oxides; D010420:Pentanes; D055549:Volatile Organic Compounds; C005059:isoprene; D005557:Formaldehyde; D010126:Ozone; C005055:cloflucarban; D001966:Bromine