Current estimations indicate that approximately 0.8% of the Earth's land surface is currently considered uninhabitable due to extreme heat, with mean temperatures exceeding 29°C (84.2°F). However, the area impacted by dangerous heat levels that make outdoor activity unsafe, particularly for vulnerable populations like older adults, is significantly larger.
Between 1994 and 2023, approximately 2% of the Earth's land area experienced uncompensable heat thresholds (where the body's core temperature cannot be maintained) for healthy adults under 60. This figure rises to over 20% for older adults during intense heat periods.
Future warming scenarios indicate a substantial increase in these figures:
With global warming exceeding 2°C (3.6°F), the land area experiencing unsurvivable heat (where core body temperature could reach 42°C within six hours) could triple.
At 4°C (7.2°F) of warming, approximately 40% of the globe could regularly face uncompensable heat conditions.
Older adults could experience uncompensable heat across about 60% of land during extreme events if warming reaches 4 to 5 degrees Celsius.
By 2070, if warming reaches around 3°C, one-third of the global population might live in areas with temperatures similar to the hottest parts of the Sahara Desert today.
These projections underscore the increasing risk of extreme heat due to climate change, which poses significant dangers to human health and livability, and may lead to large-scale migration, particularly in South Asia and Sub-Saharan Africa.
Extreme heat is making regions of Earth uninhabitable for humans
Feb 7, 2025 — Extreme heat is making large regions of Earth uninhabitable for humans. ... Rising global temperatures may render extensive regions of the planet too hot for hu...
Earth.com
3 billion people could live in places as hot as the Sahara by 2070 ...
May 13, 2020 — Sean Fleming * In the next 50 years, a third of the world's population could be living in areas as hot as the hottest parts of the Sahara now. * Humans have ada...
The World Economic Forum
Third of Earth's Landmass Could Soon Be Too Hot For Over 60s
Feb 5, 2025 — Last year, more than 1,300 people died at the hajj pilgrimage in Saudi Arabia where temperatures hit 51.8 °C (125 degrees Fahrenheit). For this study, published...
Feb 7, 2025 — Older adults may face uncompensable heat over 60% of Earth's land during extreme hot spells, while younger adults could encounter unsurvivable ...
May 4, 2020 — A new study released Monday, May 4, 2020, says 2 to 3.5 billion people in 50 years will be living in a climate that historically has proven just too hot to ...
May 5, 2020 — A study that shows a billion people will either be displaced or forced to endure insufferable heat for every additional 1C rise in the global temperature.
Oct 9, 2023 — If global temperatures increase by 1 degree Celsius (C) or more than current levels, each year billions of people will be exposed to heat and humidity so ...
Mar 23, 2021 — At the moment, just 0.8% of the world's land surface can be considered uninhabitably hot – where mean temperatures are over 29 degrees C.
Yes, 2024 was indeed the warmest year on record globally, according to multiple scientific organizations, including NASA and the World Meteorological Organization (WMO). It surpassed the previous record, set in 2023. The global average surface temperature in 2024 was 1.55 degrees Celsius (2.79 degrees Fahrenheit) above the pre-industrial average. This makes 2024 the first year to exceed the 1.5 degrees Celsius warming threshold set by the Paris Agreement.
Here's a more detailed breakdown:
Global Temperature:
The average global surface temperature in 2024 was 2.32 degrees Fahrenheit (1.29 degrees Celsius) above the 20th-century average.
Regional Records:
Many regions experienced their warmest year on record, including parts of Africa, Europe, North America, Oceania, and South America.
Warming Trend:
The past decade has been the warmest on record, with all ten of the warmest years occurring within the last decade.
Impacts:
The record-breaking heat in 2024 was associated with extreme weather events, including heatwaves, floods, and wildfires.
Ocean Heat:
Ocean temperatures also reached record highs, with the upper 2000 meters of the ocean experiencing a significant increase in heat content.
WMO confirms 2024 as warmest year on record at about 1.55°C above ...
Jan 10, 2025 — Breadcrumb. Home. Media Centre. WMO confirms 2024 as warmest year on record at about 1.55°C above pre-industrial level...
World Meteorological Organization WMO
2024 was warmest year in the modern record for the globe - Climate
Jan 10, 2025 — Details. In 2024, global surface temperature was 2.32 °F (1.29°C) above the 20th-century average. This ranks as the hi...
Climate
Temperatures Rising: NASA Confirms 2024 Warmest Year on Record
Jan 10, 2025 — Earth's average surface temperature in 2024 was the warmest on record, according to an analysis led by NASA scientists...
.png)
No comments:
Post a Comment