What’s the hottest the Earth’s ever been?
climate.gov
What’s the hottest the Earth’s ever been?
1–10 of 67 posts
Re: What’s the hottest the Earth’s ever been?
#2During the age of dinosaurs it was hotter than it is now.
Re: What’s the hottest the Earth’s ever been?
#3No post body was provided.
Re: What’s the hottest the Earth’s ever been?
#4During Hadean geologic eon, when Earth surface was molten and cooled to form the first rocks.
Re: What’s the hottest the Earth’s ever been?
#5“For most of the time, global temperatures appear to have been too warm (red portions of line) for persistent polar ice caps. The most recent 50 million years are an exception”
Re: What’s the hottest the Earth’s ever been?
#6I often wonder about terraforming (on places like Mars planet).
Earth obviously had the leg up on water accumulation during its accretation stage (Hadean period).
Perhaps we can start generating oxygen early over there on Mars using a one-step CO2->O2+C catalyst.
This comes to mind: https://www.pnas.org/content/109/39/15606
Re: What’s the hottest the Earth’s ever been?
#7No post body was provided.
Re: What’s the hottest the Earth’s ever been?
#8“For most of the time, global temperatures appear to have been too warm (red portions of line) for persistent polar ice caps. The most recent 50 million years are an exception”
Our Sun probably ate a planet thereby disrupting the solar cycle.
Re: What’s the hottest the Earth’s ever been?
#9During Hadean geologic eon, when Earth surface was molten and cooled to form the first rocks. https://en.wikipedia.org/wiki/Hadean
Yes, the article acknowledges that but also makes the point that it's not interesting from a human perspective.
"None of these techniques help with the very early Earth. During the time known as the Hadean (yes, because it was like Hades), Earth’s collisions with other large planetesimals in our young solar system—including a Mars-sized one whose impact with Earth likely created the Moon—would have melted and vaporized most rock at the surface. Because no rocks on Earth have survived from so long ago, scientists have estimated early Earth conditions based on observations of the Moon and on astronomical models. Following the collision that spawned the Moon, the planet was estimated to have been around 2,300 Kelvin (3,680°F)."
"Even after collisions stopped, and the planet had tens of millions of years to cool, surface temperatures were likely more than 400° Fahrenheit. Zircon crystals from Australia, only about 150 million years younger than the Earth itself, hint that our planet may have cooled faster than scientists previously thought. Still, in its infancy, Earth would have experienced temperatures far higher than we humans could possibly survive."
"But suppose we exclude the violent and scorching years when Earth first formed. When else has Earth’s surface sweltered?"
Re: What’s the hottest the Earth’s ever been?
#10It is strange why many politicians and countries (Germany included) appear to close their eyes and still promote or work on the 1.5 °C goal, which seems pretty unrealistic at this stage. Maybe it is to calm the public, besides knowing better.
Instead, there is a need for more realistic plans to model and prepare for 3°C or 5°C increase of average temperature by 2060 (or 2100). Looking at these bigger swings in temperature, it is more likely that we're seeing temperature peaking beyond our expectations than below.