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Typhoon Travels

12/10/2017

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Author

Bella Clark

PictureDebris swept on shore by Typhoon Hato: Shek O Beach, Hong Kong
When travelling in South-East Asia, you learn to expect the unexpected. But residents, authorities and tourists are beginning to expect stronger natural disasters more frequently, a trend related to climate change. Typhoons are tropical hurricanes common in South East Asia, storms that form over oceans with a temperature of at least 26.5°. Evaporation occurs and winds near the surface bring this warm, moist air towards the centre of the storm, which rises rapidly in its ‘eye’. Greater pressure differences in the upper atmosphere and increased water vapour concentration result in stronger winds and intense rain, the characteristics of a typhoon. Typhoons have varying strengths, which are categorised and responded to differently in each nation.

But how is climate change affecting typhoons and their consequences on society? Rising ocean temperatures associated with climate change provide the storms with more energy, meaning that wind speeds increase and precipitation intensifies. This can generally be associated with greater destruction and risk, problematic in South East Asia particularly in terms of structural preparation, response time and life insurance. Yet the effect of increasing severity of typhoons in this region must be considered with regard to the inequality of wealth across its nations.

I recognised this when travelling in Hong Kong and Vietnam, countries both hit by typhoons during my visit. In Hong Kong, the typhoon was the third in two weeks, and by far the least significant. Hong Kong categorises the typhoon by wind speed, and has associated warning signals; T1, T3, T5, T8, T9 and T10 in order of threat. Typhoon Hato struck Hong Kong on the 23rd August, and although it killed 12 people, these were in different regions of southern China. This can be attributed to the T10 warning being raised for the first time in 5 years. The preparation that this enabled with a foresight of the typhoon’s severity meant that government buildings, offices, schools and transport shut down, reducing the possibility for death.

PictureDuring Typhoon Doksuri: Cat Ba Island, Vietnam
Comparatively, Vietnams's preparation is unbelievably different. While there was some evacuation of mainland villages, while staying on Cat Ba Island I wasn’t made aware of the imminent Typhoon Doksuri, classified as a ‘severe typhoon’, until its arrival. Boat services were stopped, stranding me on the island for another day. When it made landfall, Doksuri killed 4, cut power across the nation and destroyed many buildings that were without structures designed to withstand the effects of a typhoon. The lack of widespread durability for storms in a nation experiencing them frequently is particularly concerning given their increasing intensities as a result of climate change, as well as the tourism that is growing in popularity in Vietnam.

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  • About
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