US: The Carbon dioxide (CO2) levels peaked more than 50 per cent higher than pre-industrial levels in May, comparable to levels seen about 4 million years ago, according to scientists. 美国:科学家表示,5月份,二氧化碳(CO2)浓度达到峰值,比工业化前水平高出50%以上,与大约400万年前的水平相当。 Th...
The last time CO2 levels were as high as today, ocean waters drowned the lands where big cities like Houston, Miami, and New York City now exist. It’s a time called the Pliocene (上新世) or mid-Pliocene, some 3 million years ago, when sea levels were around 30 feet higher (but ...
Antarctic CO2 Levels Highest in 4 Million Years: Is That a Problem?Antarctica recently witnessed an event that last took place fourmillion years ago: Carbon...Thomson, Jason
and then CO2levels fell below those levels in the Hirnantian Glaciation (Ice Age), 445 million years ago (Pancost et al. 2013). The continents wereconfigured very differentlythen, and the sun was about4% less bright, allowing an ice age at higher CO2levels than possible today (Scotese 2021...
So if the CO2 levels were high 250 million years ago, during the 800,000-year long ice age, that would again show that the CO2 concentration is not a driving mechanism, and if CO2 levels were low during the Permian-Triassic Boundary, that would also show that CO2 co...
played a distinct role in climate variability during the mPWP. They also facilitate ongoing data-model comparisons and suggest that, at present rates of human emissions, there will be more CO2in Earth’s atmosphere by 2025 than at any time in at least the last 3.3 million years....
We find that Earth’s climate sensitivity to CO2-based radiative forcing (Earth system sensitivity) was half as strong during the warm Pliocene as during the cold late Pleistocene epoch (0.8 to 0.01 million years ago). We attribute this difference to the radiative impacts of continental ice-...
The last time CO2levels were as high as today, ocean waters drowned the lands where big cities like Houston, Miami, and New York City now exist. It’s a time called the Pliocene (上新世) or mid-Pliocene, some 3 million years ago, when sea levels were around 30 feet higher (but poss...
abut none of them four felt bored 正在翻译,请等待...[translate] awhich is faster,cold or heat 哪个是更加快速的,寒冷或热[translate] amisse misse[translate] alevels of gas flaring in million tonnes of CO2 equivalent 飘动在百万吨的气体的水平二氧化碳等值中[translate]...
Humans appeared on earth over 100 million years ago. Determine whether the following statement is true or false: Most inorganic carbon used by producers is found in the soil and not in the atmosphere. True or false? As the temperature of a substance increases, it expands...