Are human are responsible for changing climate

September 19, 2019, 9:08 am

Agree68 Disagree14

83%
17%

The debate "Are human are responsible for changing climate" was started by gopalved on September 19, 2019, 9:08 am. 68 people are on the agree side of this discussion, while 14 people are on the disagree side. That might be enough to see the common perception. It looks like most of the people in this community are on the agreeing side of this statement.

Nemiroff posted 3 arguments, TheExistentialist posted 2 arguments to the agreers part.


gopalved, Nemiroff, historybuff, TheExistentialist, everyonehasanopinion, Nikhilsoni, Persephone, Shrivali_16, Lind and 59 visitors agree.
sibongo and 13 visitors disagree.

TheExistentialist
replied to...

Sequences of annual tree rings going back thousands of years have now been analyzed for their 13C/12C ratios. Because the age of each ring is precisely known** we can make a graph of the atmospheric 13C/12C ratio vs. time. What is found is at no time in the last 10,000 years are the 13C/12C ratios in the atmosphere as low as they are today. Furthermore, the 13C/12C ratios begin to decline dramatically just as the CO2 starts to increase — around 1850 AD. This is exactly what we expect if the increased CO2 is in fact due to fossil fuel burning. Furthermore, we can trace the absorption of CO2 into the ocean by measuring the 13C/12C ratio of surface ocean waters.

In addition to the data from tree rings, there are also of measurements of the 13C/12C ratio in the CO2 trapped in ice cores. The tree ring and ice core data both show that the total change in the 13C/12C ratio of the atmosphere since 1850 is about 0.15%. This sounds very small but is actually very large relative to natural variability. The results show that the full glacial-to-interglacial change in 13C/12C of the atmosphere — which took many thousand years — was about 0.03%, or about 5 times less than that observed in the last 150 years.

4 days, 7 hours ago
Nemiroff
replied to...

coal mines for small scales like steam trains have been open for a few hundred years... a few trains arent the same as clogged highways full of cars and giant factories all over the landscape. the massive dumping of co2 in our atmosphere started around 150 years ago.

4 days, 7 hours ago
marky
replied to...

wait, how long coal mines open.

4 days, 8 hours ago
Nemiroff
replied to...

by continuing to release extra co2 that was trapped underground as coal into the atmosphere.

4 days, 8 hours ago

this is something i have to think on. How did we create climate change.

4 days, 8 hours ago

Yeah, this is pretty much undeniable at this point in time.

3 weeks, 2 days ago

1. CO2 is a greenhouse gas
2. we release CO2 in our cars and industry
3. therefore we release a greenhouse gas

4. greenhouse gases retain heat and heat up the earth
5. therefore something we release is retaining heat and heating up the earth.
6. therefore we are responsible for heating up the earth.

3 weeks, 4 days ago
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