Isoprene hotspots at the Western Coast of Antarctic Peninsula during MASEC′16

Citation

Nadzir, M.S.M and Cain, Michelle and Robinson, Andrew D. and Bolas, Conor and Harris, Neil R.P. and Parnikoza, Ivan Yu and Salimun, Ester and Mustaffa, Emienour Muzalina and alhasa, kemal maulana and Zainuddin, M. H.M. and Ghee, O. C. and Morris, Kenobi and Khan, Md Firoz and Latif, Mohd Talib and Wallis, Benjamin M. and Wee, Cheah and Zainudin, Siti Khalijah and Yusop, Norbayah and Ahmad, Mohd Riduan and Hussin, Wan M.Rauhan and Mohd Salleh, Sarahaizad and Abd Hamid, Haris Hafizal and Thian, Lai Goh and Uning, Royston and Bakar, M. A.A. and Mohd Ariff, Noratiqah and Tuah, Z. and A Wahab, Muhammad Ikram and Swee, Yeok Foong and Abu Samah, Azizan and Chenoli, Sheeba and Wan Johari, Wan Lutfi and Che Mohd zain, Che Radziah and Abdul Rahman, Nasaruddin and Rosenstiel, Todd N. and Yusoff, Abdul Hafidz and Sabuti, Asnor Azrin and Alias, Siti Aisyah and Mohd Noor, Ahmad Yunus (2019) Isoprene hotspots at the Western Coast of Antarctic Peninsula during MASEC′16. Polar Science, 20 (pt.1). pp. 63-74. ISSN 1873-9652

Abstract

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.

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Additional Metadata

Item Type:	Article
Divisions:	Faculty of Environmental Studies
DOI Number:	https://doi.org/10.1016/j.polar.2018.12.006
Publisher:	Elsevier
Keywords:	Isoprene; Antarctic peninsula; Marine algae
Depositing User:	Azhar Abdul Rahman
Date Deposited:	21 Oct 2020 19:59
Last Modified:	21 Oct 2020 19:59
Altmetrics:	http://altmetrics.com-details.php?domain=psair.upm.edu.my&doi=10.1016/j.polar.2018.12.006
URI:	http://psasir.upm.edu.my/id/eprint/80342
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