I figure i've learned enough to start writing letters and become a nuisance activist...thanks for all the peeps here who provide a wall to bounce arguments off of. Bets as to what's more effective: A wishing well or writing an MP?
I write as a concerned citizen of Canada. I am a pilot by training and have had the incredible opportuniy of seeing British Columbia and most of Canada by air, an experience which I will always treasure. I was laid off during the 2010 Olympics and am now enrolled at the University of Canada with intention of becoming a plant geneticist. Recently, I have become interested in the subject of climate change, food production, distribution, and it's effects on the global population. I see little awareness of these issues among my friends and little discussion in media or among politicians. Canada must widely acknowledge the growing threat of climate change, take steps to slow it, and plan as to how Canadians will adapt in the face of rising global temperatures and resource scarcity.
The Intergovernmental Panel on Climate Change, formed in 1988 to assess human-induced climate change, estimates that by 2040, America, Europe, and China will be uninhabitable for food growth. Scientist James Lovelock has stated that these conditions could arrive as soon as 2025. Indeed, world greenhouse gas emissions, sea-level rise, and Artic sea-ice melt have all proceeded at or higher than the IPCC worst case scenarios. Approximately 40% of the world's agricultural land is seriously degraded, according to UNU's Ghana-based Institute for Natural Resources. In Africa, if current trends of soil degradation continue, the continent might be able to feed just 25% of its population by 2025.
It is possible to see crisis far in advance – Saudi Arabia has a burgeoning population, depleted groundwater, and failing wheat crops. Egypt is the world’s biggest grain importer and is unlikely to survive without foreign aid. Both countries are equatorially located where temperatures are high even without climate change. Many countries at these latitudes suffer from overpopulation and will be disproportionally affected by climate change. Water crises seem inevitable in equatorial and mid-latitude countries.
James Hansen’s 2010 paper on glacial disintegration states that sea level could rise 5 metres by 2095, and that the process is highly non-linear. The West Antarctic Peninsula represents the most significant ice sheet for sudden collapse and sea level rise. According to the U.S. Jet Propulsion Laboratory, we can expect 1 foot by 2050 at present glacial melt rates. Stronger storms and surges will threaten coastal inhabitants and industrial sectors.
The British Royal Society says that on our present emissions path, we may see a 4 degree Celcius rise in global temperatures by 2060. That is within the lifetime of myself and fellow students. A study published in the journal Science shows that methane emissions from the Arctic increased 31% from 2003 – 2007. Studies of the East Siberian Arctic shelf shows evidence of destabilizations already. The process is non-linear and identified as the most significant threat for abrupt climate change today. Earth is entering a state of positive feedback, and past methane releases have caused up to 16 degrees Celsius of warming. Two degrees has been described as the safe upper limit for civilization, although some studies show that 2 degrees may initiate runaway climate change. Given the present feedbacks operating at a mere 0.75 degree world anomaly, I am inclined to agree. The Royal Society finds that climate change may already be eliciting a hazardous response from the geosphere (seismic, volcanic, landslides, etc), and that this will only increase in the future.
James Hansen argues that present aerosol pollution reflects 1-3 watts of solar radiation and artificially cools Earth. A sensitive satellite was launched on February 2011 to corroborate these numbers but the launch vehicle failed to detach resulting in destruction to the instrument. Since we are over 350 ppm CO2 and now in a state of positive feedback, it seems likely that stratospheric solar radiation management using sulphates or aluminum oxides will be required to slow climate change. If we wish to reverse climate change, then a monumental sequestration program on a scale never attempted in human history will be required. A significant reduction in industrial activity and aerosols may accelerate climate change and we may find ourselves having to artificially maintain the aerosol cloud.
The subject of oil depletion has been well studied and published in science and nature journals. Many experts agree we are passed peak. Since 2004, world oil production has flattened. Canada should not be wasting money on building more roads, SUVs, mega-malls, or parking lots, but instead improve low-emission public transport and seek to localize the production of essential human needs, reinforce coastal cities for higher sea levels, plan for climate refugees, and build a society resilient to climate change and oil depletion. Unfortunately the tragedy of the tarsands will not be realized by the public until it is too late. The enormous emissions, general environmental destruction and fresh water pollution will take its toll. I am not aware if shifting temperatures will make such areas more desirable for future habitation.
James Hansen and James Lovelock believe nuclear power is integral in the fight against climate change. Each city will assess its own needs for power production. Current and future breakthroughs in nuclear and renewable technology must not be discounted. Ultimately, public opinion and a society poorly educated in climate change, and historically fearful of nuclear energy may vote against it. A decade or two in the future large cities that vote against nuclear may find themselves in a fix as to how to obtain reliable low-emission grid power, and in haste return to dirty coal. Economics and construction time are frequently brought up against nuclear power, but will not be a significant handicap when climate change is internationally recognized for the threat that it is. CANDU reactors have an excellent safety record and are designed with improved seismic protection, and could play an integral part in Canada's low-emission future.
It is likely that climate change, at best, may be slowed but not reversed. There will be a need to provide large cities with reliable, low-emission grid power. Canada is large, rich in resources, comparatively underpopulated, and situated at high latitudes. Canada will be disproportionally unaffected by climate change as compared to equatorial and mid-lattitude countries. Canada can eventually expect tens, even hundreds of millions of climate refugees. Many of these people will be coming from areas of hunger, war, and destitution – areas where climate change isn’t even recognized as a contributing cause. Canada will need to be able to house these people cheaply, densely, safely, and with minimal energy inputs and emissions. They must also integrate socially and feel welcomed. Canada should not allow its great expanse of forests and natural habitat to be displaced by urban sprawl or informal unsustainable squatter camps. An extreme example of dense low emission living is the now-demolished informal settlement of Kowloon Walled City - it contained 33 000 settlers on just 6.5 acres, or a population density of 1,255,000/km2. If Canada is to accept climate refugees in a world of scarcity, it must begin planning now, and do so without necessitating that all purchase a large house and car.
I have ignored the oceans so far but it is perhaps the most important. Oceanic phytoplankton has reduced 40% since the 1950s. Phytoplankton are the base of the food chain and produce half the worlds oxygen. The world already faces declining catches both in volume and value after fishing down the food chain for decades. Similarly, ocean acidification and global warming threaten an ocean extinction event. Countries dependent on fish protein will increasingly require food aid imports. Plant produce will be needed to fill the nutritional gap as the oceans empty.
It is rare to see population control talked about in politics, and after the 1900s fiasco it’s not hard to understand why. However, if climate change significantly reduces world agricultural output, countries with exploding populations will find themselves experiencing famine and wars of attrition. Perhaps the best we can hope for is promoting family planning and safe sex practices, and educate people on the coming risks of climate change.
I hope to do my part in mitigating the coming food crisis and ultimately building a highly technological sustainable society. I hope that Canada's leaders will too.
Sincerely