Get all your news in one place.
100’s of premium titles.
One app.
Start reading
The Conversation
The Conversation
Environment
Natasha Joseph, Commissioning Editor

Cyclones in southern Africa: five essential reads

The fishing village of Mahebourg, Mauritius, is among the places in the path of cyclone Freddy. Laura Morosoli/AFP via Getty Images

Tropical cyclone Freddy was, on 21 February 2023, bearing down on Mauritius and Madagascar. Mauritius grounded flights and, news agency Reuters reported, emergency teams in four regions of Madagascar were braced for “heavy rains, floods and landslides”.

A day earlier the Mauritius Meteorological Services issued a Class 3 cyclone warning, saying estimated gusts in the centre of Cyclone Freddy could reach around 280 kilometres an hour.

Both island nations are located in the Indian Ocean and are no strangers to tropical cyclones. But, as the global climate shifts, such storms will become ever more common, endangering millions of people in Madagascar, Mauritius and other countries in the southern African region like Mozambique and Malawi.

The Conversation Africa has published a number of articles explaining the science of tropical cyclones and the role climate change is playing in their increasing frequency and force. Here are five essential reads.


Warming oceans

Tropical cyclones are huge. They can span more than 1,000km in diameter and they draw their energy from the ocean heat – ocean surface temperatures of at least 26⁰C are required for tropical cyclones to form. Over the past 30 years, as the world’s oceans have become warmer, the locations of where tropical cyclones form and intensify have been shifting.

Climate scientists Micheal Pillay and Jennifer Fitchett unpacked these shifts.


À lire aussi : Tropical cyclones in the South West Indian Ocean: new insights


Devastation

The most damaging tropical cyclones of the past few years were tropical cyclones Idai and Kenneth, which hit Mozambique especially hard in March and April of 2019. Idai alone killed more than 1,500 people in Mozambique, Malawi and Zimbabwe. In an article first published in 2019 soon after the devastation and updated in 2022 as more powerful storms battered Mozambique, Professor Fitchett explained why tropical cyclones from the Indian Ocean were becoming ever more powerful.


À lire aussi : Why the Indian Ocean is spawning strong and deadly tropical cyclones


Countries must pull together

In the wake of tropical storms Idai and Kenneth, researcher Chris Changwe Nshimbi argued that the Southern African Development Community had once again proved that it wasn’t ready to deal with environmental disasters as a collective. He traced the reasons for these shortcomings and suggested ways forward – more critical than ever as tropical storms and other climate-related crises hammer southern Africa.


À lire aussi : Southern African countries won't manage disasters unless they work together


More to come

Nshimbi is right: there is far more to come. Professor Fitchett – who has dedicated much of her research to the phenomenon – explained what drives extreme weather events.


À lire aussi : Southern Africa must brace itself for more tropical cyclones in future


The bigger picture

Tropical cyclones are only one part of the African continent’s climate crisis. Meteorologist Victor Ongoma explained what climate change experts were predicting for the continent and how different regions would be affected.


À lire aussi : Insights for African countries from the latest climate change projections


The Conversation

This article was originally published on The Conversation. Read the original article.

Sign up to read this article
Read news from 100’s of titles, curated specifically for you.
Already a member? Sign in here
Related Stories
Top stories on inkl right now
Our Picks
Fourteen days free
Download the app
One app. One membership.
100+ trusted global sources.