Projected impacts and related losses and damages are set to intensify with every fraction of a degree, meaning action to address this must dramatically accelerate. The UN Climate Change High-Level Champions aim to play an instrumental part in this process.
Climate change: This is the impact of extreme weather events on the economy
Hurricane Ida, the fourth and to-date strongest storm of the 2021 Atlantic hurricane season, has made its way to New York City, albeit as a much weaker tropical storm. Nevertheless, Ida caused widespread flooding and a state of emergency declaration in the United States’ biggest city. The current season has so far produced four out of the six to ten predicted hurricanes, but the most active and dangerous time between August and October is still underway.
Over the past decade, global economic losses from weather events like storms, floods, droughts and wildfires have grown more costly. During the first decade of the 21st century, there were only two years when weather disasters cost more than $200 billion (including 2010). In the second decade, those $200 billion-dollar-a-year losses seem to have become more normal, with seven out of ten years grossing over $200 billion in global losses from weather events. The costliest year on record was registered in 2017, totaling over $470 billion in losses, including those from major Hurricanes Harvey, Maria and Irma. All in all, weather damages totaled approximately $2.5 trillion around the globe between 2011 and 2020, up almost 50 percent from the 2001-2010 figure.
As part of the 2020 Weather, Climate and Catastrophe Insight report, insurance service provider AON points out that due to the influences of climate change, it is expected that “the storms which do develop have the potential to be larger, more intense, and pose a greater risk to coastal and inland vulnerabilities.
As resilience continues to improve, it should be possible to move from crisis management to risk management of droughts in the Horn of Africa, explains David Nash, Professor of Physical Geography, University of Brighton.
Forest clearing and pollution originating from aquaculture and agriculture are the single biggest factor of mangrove loss, according to 200 scientific studies published over the past four decades.
The Earth has lost 4,000 square kilometres (km2) of its tidal wetlands over the past 20 years, a new study finds. This is equal to an area roughly the size of the Spanish island Mallorca or the Indian state of Goa.