Isoprene hotspots at the Western Coast of Antarctic Peninsula During MASEC'16

Nadzir, Mohd Shahrul and Cain, Michelle and Ahmad, Mohd Riduan and Yusop, Norbayah and Robinson, Andrew D. and Bolas, Conor Gordon and Harris, Neil R.P. and Parnikoza, Ivan Yu and Salimun, Ester and Mustafa, Emienour Muzalina and Alhasa, Kemal Maulana and Zainuddin, M. H.M. and Ghee, O. C. and Morris, Kenobi Isima and Khan, Md Firoz and Latif, Mohd Talib and Wallis, Benjamin M. and Cheah, Wee and Zainudin, Siti Khalijah and Hussin, Wan M.Rauhan and Salleh, Sarahaizad Mohd and Hamid, Haris Hafizal Abd and Goh, Thian Lai and Uning, Royston and Bakar, Mohd Aftar Abu and Ariff, Noratiqah Mohd and Tuah, Z. and Wahab, Mahamad Noor and Foong, Swee Yeok and Abu Samah, Azizan and Chenoli, Sheeba Nettukandy and Wan Johari, Wan Lutfi and Zain, Che Radziah Mohd and Rahman, Nasaruddin Abdul and Rosenstiel, Todd N. and Yusoff, Abdul Hafidz and Sabuti, Asnor Azrin and Alias, Siti Aisyah Binti and Mohd Noor, Ahmad Yunus (2019) Isoprene hotspots at the Western Coast of Antarctic Peninsula During MASEC'16. Polar Science, 20. pp. 63-74. ISSN 1873-9652

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Isoprene (C5H8) plays an important role in the formation of surface ozone (O3) and the secondary organic aerosol (SOA) which contributed to the climate change. This study aims to determine hourly distribution of tropospheric isoprene over the Western Coast of Antarctic Peninsula (WCAP) during the Malaysian Antarctic Scientific Expedition Cruise 2016 (MASEC′16). In-situ measurements of isoprene were taken using a custom-built gas chromatography with photoionization detector, known as iDirac. Biological parameters such as chlorophyll a (chl-a) and particulate organic carbon (POC) were compared to the in-situ isoprene measurements. Significant positive correlation was observed between isoprene and POC concentrations (r2 = 0.67, p < 0.001), but not between isoprene and chl-a. The hotspots of isoprene over maritime Antarctic were then were investigated using NAME dispersion model reanalysis. Measurements showed that isoprene mixing ratio were the highest over region of King George Island, Deception Island and Booth Island with values of ∼5.0, ∼0.9 and ∼5.2 ppb, respectively. Backward trajectory analysis showed that air masses may have lifted the isoprene emitted by marine algae. We believe our findings provide valuable data set of isoprene estimation over the under sampled WCAP

Item Type: Article
Uncontrolled Keywords: Isoprene, Antarctic Peninsula, Marine Algae
Divisions: Faculty of Electronics and Computer Engineering
Depositing User: Norfaradilla Idayu Ab. Ghafar
Date Deposited: 13 May 2022 12:03
Last Modified: 02 Aug 2023 14:53
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