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Recently, tropical cyclone activity in the northern hemisphere has been extremely frequent, which has had a huge impact on many countries and regions. Not long ago, on September 18, 2022, the eastern and western hemispheres were hit by tropical cyclones almost simultaneously. In the western Pacific, Typhoon Nanmadaw ravaged the Japanese island of Kyushu and then swept through several parts of Japan, bringing torrential rains.
Meanwhile, in the Atlantic, Hurricane Fiona also quickly formed and swept through the West Indies. Recently, Hurricane Fiona has ravaged Puerto Rico, a U.S. overseas territory on the edge of the Caribbean Sea, with wind and rain. Although Fiona was only a Category 1 hurricane when it affected Puerto Rico, equivalent to a Category 12 to 13 typhoon, its slow moving speed gave it more time to wreak havoc. Fiona received 300 to 600 millimeters of rain in many places, causing some rivers to flood and causing secondary disasters.
According to media reports, the entire power grid in Puerto Rico collapsed as a result of Hurricane Fiona, leaving 1.4 million households without power and about a quarter without water supply.
Of course, the Western Hemisphere is now in the midst of an active tropical cyclone. In addition to Hurricane Fiona in the Atlantic, there was Hurricane Madeleine in the eastern Pacific, according to satellite cloud images, indicating that September was a month of intense tropical cyclone activity. And in the North Atlantic in the northern hemisphere, some supercomputer forecasts suggest that hurricane Fiona could be followed by a powerful hurricane in the Caribbean-Gulf of Mexico region by the end of September, gradually approaching the southern coast of the United States. It is predicted that the hurricane's central pressure as it approaches the southern coast of the United States on September 30 may reach 940 hPa, equivalent to the level of a strong typhoon or even a super typhoon in the western Pacific. This means that after Hurricane Fiona devastated U.S. overseas territories, a more dangerous hurricane could be aimed at the U.S. mainland.
In conclusion, the frequency and increased intensity of tropical cyclone activity has raised concerns about the effects of climate change, which requires more scientific research and international cooperation to mitigate the damage it can bring.
Meteorological experts believe this spate of tropical cyclone activity could be a striking sign of climate change. Rising global temperatures and rising ocean surface temperatures provide favourable conditions for the formation and strengthening of tropical cyclones. It also means that similar weather events are likely to become more frequent and severe in the future.
In addition to climatic factors, urban planning and emergency preparedness also need to be strengthened. Natural disasters such as hurricanes and typhoons pose a huge threat to urban infrastructure and the lives of residents. Governments and communities need to invest more in sturdy buildings, good drainage systems, and effective emergency response plans to reduce potential casualties and property damage.
In addition, international cooperation is essential. The impact of transnational tropical cyclones is wide-ranging and requires the international community to work together to coordinate relief efforts and resource allocation. The United Nations and other international organizations have a key role to play in this regard by ensuring timely support and assistance to affected countries.
In the face of increasing tropical cyclone activity, we must take the challenge of climate change seriously and take action to mitigate its potential impacts. Only through scientific research, urban planning and international collaboration can we better respond to future natural disasters and protect people's lives and property. It also reminds us that global climate action is a priority, and we need to work together to slow the pace of climate change to protect our planet and our future.
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