-
Categories
-
Pharmaceutical Intermediates
-
Active Pharmaceutical Ingredients
-
Food Additives
- Industrial Coatings
- Agrochemicals
- Dyes and Pigments
- Surfactant
- Flavors and Fragrances
- Chemical Reagents
- Catalyst and Auxiliary
- Natural Products
- Inorganic Chemistry
-
Organic Chemistry
-
Biochemical Engineering
- Analytical Chemistry
- Cosmetic Ingredient
-
Pharmaceutical Intermediates
Promotion
ECHEMI Mall
Wholesale
Weekly Price
Exhibition
News
-
Trade Service
How hot is the earth 140 years later? The Arctic is home to palm trees and crocodiles, according to a study that says, carbon dioxide is now being released into the atmosphere about 10 times faster than during the last major global warming period, and in fact, the last time carbon dioxide emissions were so high, the Arctic was home to palm trees and crocodiles.
researchers estimate that if carbon dioxide emissions continue on current trajectories, we could reach levels not reached since the last global warming in just 140 years, and 300 billion tons of carbon dioxide will be emitted by 2159.
by 2278, CO2 emissions will exceed 700 billion tons.
a new study has found that humans are injecting carbon dioxide into the atmosphere nine to 10 times faster than greenhouse gas emissions from global warming 56 million years ago.
, if carbon emissions continue to rise, the total amount of carbon dioxide injected into the atmosphere since humans began using fossil fuels is already equivalent to the amount of carbon dioxide released during the carbon emissions process. "Although you and I won't live until 2159, it's only four generations away from where we are now," says Philip Gingerich, a scholar at Michigan University who studies paleontology and palaeontology.
" scientists often use this approach as a benchmark for more modern climate change.
but the new study suggests that these changes are much faster than researchers had previously thought, because today's warming is much faster than any climate event since the extinction of dinosaurs. "Assuming current trends, the amount of carbon dioxide that humans emit into the atmosphere is really unprecedented," said Gabriel, a person at the University of Utah at
the University of Utah who was not involved in the new study.
and we don't have too many geological cases to learn from the impact of climate change on humans and the world.
" a senior researcher at Vanderbilt University said the exact impact of high carbon levels on the environment was unclear, but higher temperatures could lead to the extinction of many species, with lucky species able to adapt or migrate.
, she said, the climate system will take thousands of years to cool down. "It's not just 100 years from now, it's going to take quite a while for carbon dioxide to re-enter the earth's crust," he said.
" this is not a short-term event.
if we don't act quickly, the Earth's climate will get hotter and hotter in the next few years.
"About 56 million years ago, there was a global warming event on Earth.
, but in this case, large amounts of carbon dioxide were released into the Earth's atmosphere, rapidly dropping global temperatures to 5 to 8 degrees Celsius.
the global average temperature peaks at about 23 degrees Celsius, about 7 degrees Celsius above today's average.
scientists believe that during this time and the subsequent warm period, the Arctic had no ice, even palm and palm trees.
this is not the hottest Earth on record, but it is definitely the most incredible period since the extinction of the dinosaurs 66 million years ago.
scientists can't determine exactly how much carbon is injected into the atmosphere or how long it lasts.
their best estimates suggest that the amount of carbon accumulated over a period of 3,000 to 20,000 years is between 3,000 and 7,000 cubic metres, based on ocean sediment cores, which show changes in carbonate minerals deposited during that time.
large amounts of carbon releases and rapidly rising temperatures have dramatically changed the Earth's climate, leading to the mass extinction of deep-sea organisms, a key link in the marine food web.
the animals on the land became smaller and moved north to the cold.
some modern mammal populations, including close relativemammals, appeared for the first time soon, but scientists believe this is a direct result of rapid changes in the environment.
results suggest that scientists may not be able to predict environmental or biological changes based on changes that will take place in the coming years, because today's warming is occurring much faster.
and today's earth is not the earth of the time.
, the planet now has a more diverse species than it was 56 million years ago.
but it is certain that a sharp warming of the climate will pose a threat to the survival of species.
.