What does the greenhouse effect have to do with global warming.
There have been other proximate causes of our current ice age, beginning with around 40 mya, and when the land bridge formed between the Americas around three mya , and are responsible for the "wobble" of advancing and retreating ice sheets in the Northern Hemisphere during this ice age. There is always the battle of the hypotheses in scientific circles, but the nearly universal consensus is that greenhouse gases, oceanic currents (with a land mass at the South Pole, and the landlocked North Pole), and Milankovitch cycle dynamics, in that ranking of importance, have caused the current ice age. Until the rise of humanity, the primary carbon dioxide input into the carbon cycle was via volcanism, which is related to tectonic plate movements, and plate movements also affected oceanic currents. Scientists are continually surprised by the dynamics and extent of Global Warming, and usually an unpleasant surprise, such as the findings published in 2014 which show that the Antarctic ice sheets are melting faster than expected, and in unexpected ways, and the Greenland ice sheet is also yielding alarming surprises.
Global warming would lead to tropical storms?
If the 6.6 billion people on the earth change a few daily habits, we may be able to slow the effects of global warming and ensure that the life of our fossil fuels is extended....
Global warming is a long term used to reference “a large increase in the Earth’s average surface tem temperature that results in large changes in climate.” Differences in “solar radiation, atmospheric chemistry, and oceanic and atmospheric circulation resulted in global climate changes.” Many human activities contribute to the much of the...
This is the question of global warming.
The ecosystems may not have recovered from Olson’s Extinction of 270 mya, and at 260 mya came another mass extinction that is called the mid-Permian or extinction, or the , although a recent study found only one extinction event, in the mid-Capitanian. In the 1990s, the extinction was thought to result from falling sea levels. But the first of the two huge volcanic events coincided with the event, in . There can be several deadly outcomes of major volcanic events. As with an , massive volcanic events can block sunlight with the ash and create wintry conditions in the middle of summer. That alone can cause catastrophic conditions for life, but that is only one potential outcome of volcanism. What probably had far greater impact were the gases belched into the air. As oxygen levels crashed in the late Permian, there was also a huge carbon dioxide spike, as shown by , and the late-Permian volcanism is the near-unanimous choice as the primary reason. That would have helped create super-greenhouse conditions that perhaps came right on the heels of the volcanic winter. Not only would carbon dioxide vent from the mantle, as with all volcanism, but the late-Permian volcanism occurred beneath Ediacaran and Cambrian hydrocarbon deposits, which burned them and spewed even more carbon dioxide into the atmosphere. Not only that, great salt deposits from the Cambrian Period were also burned via the volcanism, which created hydrochloric acid clouds. Volcanoes also spew sulfur, which reacts with oxygen and water to form . The oceans around the volcanoes would have become acidic, and that fire-and-brimstone brew would have also showered the land. Not only that, but the warming initiated by the initial carbon dioxide spike could have then warmed up the oceans enough so that methane hydrates were liberated and create even more global warming. Such global warming apparently warmed the poles, which not only melted away the last ice caps and ended an ice age that had , but deciduous forests are in evidence at high latitudes. A 100-million-year Icehouse Earth period ended and a 200-million-year Greenhouse Earth period began, but the transition appears to have been chaotic, with wild swings in greenhouse gas levels and global temperatures. Warming the poles would have lessened the heat differential between the equator and poles and further diminished the lazy Panthalassic currents. The landlocked Paleo-Tethys and Tethys oceans, and perhaps even the Panthalassic Ocean, may have all become superheated and anoxic as the currents died. Huge also happened, which may have and led to ultraviolet light damage to land plants and animals. That was all on top of the oxygen crash. With the current state of research, all of the above events may have happened, in the greatest confluence of life-hostile conditions during the eon of complex life. A recent study suggests that the extinction event that ended the Permian may have lasted only 60,000 years or so. In 2001, a bolide event was proposed for the Permian extinction with great fanfare, but it does not appear to be related to the Permian extinction; the other dynamics would have been quite sufficient. The Permian extinction was the greatest catastrophe that Earth’s life experienced since the previous supercontinent existed in the .
I say this: global warming isn’t all it’s made out to be.
The Cambrian’s global ocean contained far less oxygen than today’s. Being newly and probably inconsistently oxygenated by oceanic currents was only part of the problem. The Cambrian oceans were warmer than today’s oceans, perhaps far warmer, such as 40o C and higher for the . Water’s ability to absorb oxygen declines as it gets warmer. Water heated from 10o C to 40o C will lose 40% of its ability to absorb oxygen. The phenomenon of warmer water absorbing less oxygen contributed to many instances of anoxic waters during the eon of complex life, and particularly in the warmer, earlier periods.