Risk of Flooding Mapped Around the World
Devastating floods across Pakistan this summer have resulted in more than 1,400 lives lost and one-third of the country being under water.
This raises the question: which nations and their populations are the most vulnerable to the risk of flooding around the world?
Using data from a recent study published in Nature, this graphic maps flood risk around the world, highlighting the 1.81 billion people directly exposed to 1-in-100 year floods. The methodology takes into account potential risks from both inland and coastal flooding.
Asian Countries Most at Risk from Rising Water Levels
Not surprisingly, countries with considerable coastlines, river systems, and flatlands find themselves with high percentages of their population at risk.
The Netherlands and Bangladesh are the only two nations in the world to have more than half of their population at risk due to flooding, at 59% and 58%, respectively. Vietnam (46%), Egypt (41%), and Myanmar (40%) round out the rest of the top five nations.
Besides the Netherlands, only two other European nations are in the top 20 nations by percentage of population at risk, Austria (18th at 29%) and Albania (20th at 28%).
|Rank||Country||Flood risk, by population exposed (%)||Total population exposed|
|#12||🇸🇸 South Sudan||32.5%||5,437,000|
|#15||🇨🇬 Republic of the Congo||29.3%||1,170,000|
The Southeast Asia region alone makes up more than two-thirds of the global population exposed to flooding risk at 1.24 billion people.
China and India account for 395 million and 390 million people, respectively, with both nations at the top in terms of the absolute number of people at risk of rising water levels. The rest of the top five countries by total population at risk are Bangladesh (94 million people at risk), Indonesia (76 million people at risk), and Pakistan (72 million people at risk).
How Flooding is Already Affecting Countries Like Pakistan
While forecasted climate and natural disasters can often take years to manifest, flooding affected more than 100 million people in 2021. Recent summer floods in Pakistan have continued the trend in 2022.
With 31% of its population (72 million people) at risk of flooding, Pakistan is particularly vulnerable to floods.
In 2010, floods in Pakistan were estimated to have affected more than 18 million people. The recent floods, which started in June, are estimated to have affected more than 33 million people as more than one-third of the country is submerged underwater.
The Cost of Floods Today and in the Future
Although the rising human toll is by far the biggest concern that floods present, they also bring with them massive economic costs. Last year, droughts, floods, and storms caused economic losses totaling $224.2 billion worldwide, nearly doubling the 2001-2020 annual average of $117.8 billion.
A recent report forecasted that water risk (caused by droughts, floods, and storms) could eat up $5.6 trillion of global GDP by 2050, with floods projected to account for 36% of these direct losses.
As both human and economic losses caused by floods continue to mount, nations around the world will need to focus on preventative infrastructure and restorative solutions for ecosystems and communities already affected and most at risk of flooding.
Tracking Antarctica Sea Ice Loss in 2023
Antarctica’s ice extent has reached record lows. This visual details and maps Antarctica sea ice loss over the last two years.
Tracking Antarctica Sea Ice Loss in 2023
Scientists have been tracking the extent and concentrations of Antarctica’s sea ice for decades, and the last two years have raised global alarm bells.
As temperatures are breaking records around the world, the southernmost continent’s ice sheet is visibly smaller than it has been in decades past.
The above graphic uses tracking data from the National Oceanic and Atmospheric Administration (NOAA) and the National Snow and Ice Data Center (NSIDC) to visualize sea ice extent in Antarctica as of August 2023
How Much Ice Has Antarctica Lost?
According to satellite data tracked by the NSIDC, sea ice extent in Antarctica has shrunk to record lows.
When compared to previously charted data dating back to 1979, daily record lows in sea ice extent have been recorded for every day in 2023 so far.
Here is how daily Antarctic sea ice extent in 2023 compares to 2022 (which had many of the previous record lows), and the median from 1981 to 2010.
|Date||2023 (km²)||2022 (km²)||Median (1981‒2010, km²)|
Antarctica’s sea ice extent on August 24, 2023 was 1.42 million square kilometers smaller than the year before. When compared to the median extent for that date from 1980 to 2010, it was 2.07 million square kilometers smaller.
Keep in mind that July and August are the coldest months in Antarctica. Its position on the South Pole gives it a very long winter ranging from the end of February to the end of September, with ice building up before melting temperatures arrive in October.
Antarctica Sea Ice and the Rest of the World
Even though the continent is thousands of kilometers from most of Earth’s land and populace, its ice has an important impact on the rest of the planet.
Antarctica’s large ice sheet is able to reflect a lot of sunlight in sunnier months, reducing the amount absorbed by the ocean. The wider its extent builds up over the winter, the more sunlight and heat it is able to reflect.
It’s also important to consider that this ice comes from a regular pattern of freezing and melting ocean water. The more ice is lost to the oceans compared to what accumulates in a given year, the higher sea levels rise around the world.
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