A piece of home: Sentian displaying the Jalur Gemilang at the Chilean Antarctic research base on King George Island, Antarctica. — UMS
KUALA LUMPUR: Prof Dr Justin Sentian of the Faculty of Science and Natural Resources, Universiti Malaysia Sabah (UMS) has been recognised as the first Malaysian to conduct winter research in Antarctica and to have spent the most time – seven months – in the icy continent.
The atmospheric scientist arrived safely at the Kuala Lumpur International Airport on Friday after conducting research on climate change entitled “Tropospheric Ozone and Halocarbon Variations in the Antarctic Peninsula Under Extreme Weather Conditions”.
Through the research, Sentian collected 197 gas samples from air, snow, sea ice, and sea water to study the content of halocarbon species such as bromocarbon.
He also obtained data that recorded variations in the concentration of surface ozone and several hydrocarbon gas species throughout the winter in Antarctica.
“The data is essential in the chemical study of atmospheric ozone, particularly in the troposphere and stratosphere, as well as its implications on the increase in tropospheric ozone levels and the long-term effects of climate change.
“Since surface ozone is a secondary pollutant and a significant greenhouse gas in the issue of global warming, this ozone has the ability to trap heat 1,000 times better than carbon dioxide,” Dr Sentian said in a statement issued by the Sultan Mizan Antarctic Research Foundation yesterday as reported by Bernama.
According to Sentian, research on halocarbons such as bromocarbons could have significant implications not only for the atmospheric ozone chemistry but also for their role as an ozone-depleting agent.
“These halocarbons are naturally occurring substances that can cause ozone depletion.
“If this occurs, global as well as Malaysia’s efforts to restore the ozone layer through the implementation of the Montreal Protocol will be hampered,” he said.
On the challenges he faced, Sentian cited unpredictable and extreme weather conditions, with temperatures reaching -44°C and snowstorms with wind speeds of up to 120 kph which made it difficult for him to collect research samples.
“I hope this research will have a significant impact on our understanding of ozone variations and hydrocarbon and halocarbon species in extreme winter weather conditions,” he said.
The seven-month expedition was conducted alongside Chilean researcher Prof Julio Escudero at the Chilean Antarctic research base on King George Island, Antarctica.
It was also organised by the Sultan Mizan Antarctic Research Foundation in collaboration with the Chilean Antarctic Institute and the Chilean Embassy in Malaysia.
