-1=e^ipi Posted November 17, 2013 Report Share Posted November 17, 2013 (edited) how is climate change a "net benefit" overall... and especially to Canada/Russia? 1. Increased CO2 levels in the atmosphere has a fertilizer effect on plants and makes it easier for plants to perform photosynthesis. This will help increase crop yields globally. For the vast majority of the past 500 million years in which multi-cellular life has existed on our planet in significant amounts, C02 levels have been much higher. For example, in the Cambrian Period, atmospheric C02 levels were approximately 4500 ppm, which is about 16 times pre-industrial levels. http://en.wikipedia.org/wiki/Cambrian In fact, low levels of atmospheric C02 levels around 300 ppm is geologically a relatively recent phenomenon. It pretty much started at the beginning of the Neogene period (23 million years ago) when Panama was formed between North America and South America, greatly affecting global ocean currents. http://en.wikipedia.org/wiki/Neogene Low C02 levels is one of the reasons why plants have recently evolved the C4 carbon fixation cycle (such as corn). http://en.wikipedia.org/wiki/C4_carbon_fixation 2. Warmer global temperatures will result in longer growing seasons (especially in Canada) and more habitable land (which will exceed lost habitable land from small increases in ocean levels). These longer growing seasons will result in increased crop yields and will also make it easier to extract natural resources from polar regions. For example, during the medieval warm period, grapes were grown in Northern England and agriculture was even possible in Southern Greenland by Vikings. http://en.wikipedia.org/wiki/Medieval_Warm_Period 3. Furthermore, for the vast majority of the past 500 millions years where multi-cellular life has existed in significant amounts on Earth, the Earth's global temperature was much higher than it is now. The greatest amount of biodiversity is found in equatorial regions, not polar regions so a modest increase in global temperatures will increase biodiversity. In fact, the geological time periods were there were large increases in biodiversity generally had high global temperatures (such as the Cambrian explosion or the Cretaceous period where dinosaurs flourished). 4. Humans evolved in western equatorial Africa (kenya / tanzania) and only started migrating to other places around 100,000 years ago. Therefore, humans are suited to warm climates (it is why humans are so hairless, have lots of sweat glands and are well suited for long distance running). The temperatures at which humans are most comfortable in (room temperature, so 21-24 degrees celcius) is much higher than the global average temperature (around 14 degrees celcius). Increasing the earth's average temperature will therefore make the planet better suited for humans. As for other species, I'm a human supremacist so do not care for them as much; other species will have to adapt or be naturally selected to extinction as species have been doing for millions of years. 5. Human civilization really only started to flourish at the end of the last ice age. http://en.wikipedia.org/wiki/Last_glacial_period It was only after this period that agriculture started to take off and humans started to become civilized. I therefore think that there is a strong link between a warmer climate and the rate of progress of human civilization. 6. In the case of Canada, warmer global temperatures will open up the North West Passage. This will greatly reduce shipping costs between Europe and East Asia and will be a great benefit to the global economy. It will also make it easier to access natural resources in Northern Canada. http://en.wikipedia.org/wiki/Northwest_Passage Finally, there have been many studies that try to evaluate the net effect of climate change, and all studies that I know of have concluded that climate change is of net benefit to Canada. http://www.cbc.ca/news/technology/climate-change-may-benefit-canada-s-farmers-1.1031816 http://www.spectator.co.uk/features/9057151/carry-on-warming/ Are you satisfied now? Net benefit??? Severe tornadoes, hurricanes, droughts, floods, mudslides..can all be attributed to humans pumping GHGs into our fragile atmosphere. Some of the stuff I read on here makes me wonder. This is just a lie propagated by climate alarmists and has no basis in science. Even the IPCC admits that there is no link between increased C02 levels / global temperatures and a greater frequency/severity of extreme weather events. The truth is that climate change will result in some weather events becoming more severe/frequent and other weather events becoming less severe/frequent. For example, the frequency & severity of tornadoes in South-Central USA (aka tornado alley) will become less while the frequency & severity of tornadoes in Southern Ontario will become greater. Actually, extreme weather events usually occur as a result of larger temperature or pressure gradients in the atmosphere between different parts of the globe. The temperature differences between the equatorial regions and the polar regions is the primary driver of winds. The truth is, if C02 levels increase and global temperatures increase, the global temperature gradient between equatorial regions and polar regions will decrease (polar regions will warm significantly more than equatorial regions) so if anything, more C02 should decrease the frequency & severity of extreme weather events not increase it. The idea of blaming climate change for specific storms or weather events, such as the typhoon that hit Manila is ridiculous. In fact, if you look at the recent climate change on Jupiter (which is a result of a 70 year climate cycle that is caused by atmospheric mixing), you will find that the recent decrease in the severity of extreme weather events (shrinking of the great red spot, decrease in the number of storms, smaller wind speeds) has occurred at the same time that the global average temperature on Jupiter has risen and the temperature gradient between polar and equatorial regions have decreased. Edited November 17, 2013 by -1=e^ipi Quote Link to comment Share on other sites More sharing options...
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