The basic concept of the greenhouse effect has been around since 1824. Rather than re-hash high school biology for you, I'll skip an explanation of what exactly is happening. If you want to learn more,
's. The important take aways are:
While the regional effects of climate change are notoriously hard to predict, scientific models can predict long term trends based on the Co2 concentration of the atmosphere. And, the Co2 concentration of the atmosphere can be accurately predicted based on the amount of Co2 that we emit. So, using the best science available, in order to keep warming below 2 degrees celsius we have
a carbon budget of 565 gigatons of Co2.
The Business
Here is where we encounter a problem. It's a little complicated, but it's the most important part of this entire piece, so bear with me.
Fossil fuel companies (Shell, Chevron, etc) are publicly owned. In order to keep the value of the company from dropping (to keep share prices high) they need to have at least a 100% reserve ratio. Meaning that whatever volume of oil and gas they are currently sucking from the ocean floor, dissolving from shale, or fracking to get, must be matched by an equal or greater amount in reserve. If the reserve ratio falls (less in reserve than in current production) then share value falls.
Why is this important? Because if the companies were to extract all of their reserves, they would emit 2,795 gigatons of Co2. Remember our carbon budget of 565 gigatons? The 2,795 gigatons that the fossil fuel companies have in reserves is nearly five times more than can be burned while staying below the 2 degree limit agreed upon by every nation on earth. As Bill Mckibben elaborates on
in this must-read article, without government intervention or divestment, the fossil fuel companies are going to drive us to 6 degrees of temperature change.
The science of climate change necessitates a restructuring of our energy economy, the way we do business, and the role of government in our lives. Which is why the fossil fuel companies spend more than $400,000 per day lobbying congress and untold amounts funding climate change deniers. They are literally fighting for their right to continue on as
the most profitable companies in the history of the world.
And, they're winning the fight. The number of Americans that believe that climate change is
not occurring is increasing and the Republican Party is firmly entrenched in an anti-science stance. Instead of balking at the threat of regulations governing carbon emissions, Exxon recently
spelled out in a report that restrictive climate policies are highly unlikely and "based on this analysis, we are confident that none of our hydrocarbon reserves are now or will become stranded." Meaning that the fossil fuel companies plan on burning every ounce of the 2,795 gigatons of stored Co2 that they have sitting in the ground.
The Economics
So, with a carbon budget in mind, how do we keep temperatures below 2 degrees? As climate journalist David Roberts
spells out:
Right now, global emissions are rising, faster and faster. Between 2000 and 2007, they rose at around 3.5 percent a year; by 2009 it was up to 5.6 percent. In 2010, we hit 5.9 percent growth, a record. We aren't just going in the wrong direction-- we're accelerating in the wrong direction. If emissions peak in 2020, then, in order to stay under 2 degrees, they need to drop by 10% every year until we reach a zero carbon economy by 2045.
As you can see in the graph below, the longer we wait, the steeper the necessary emissions drop.
And, in the words of David Roberts again:
Just to give you a sense of scale: The only thing that’s ever pushed emissions reductions above 1 percent a year is.. “recession or upheaval.” The total collapse of the USSR knocked 5 percent off its emissions. So 10 percent a year is like … well, it’s not like anything in the history of human civilization. This, then, is the brutal logic of climate change: With immediate, concerted action at global scale, we have a slim chance to halt climate change at the extremely dangerous level of 2 degrees C. If we delay even a decade — waiting for better technology or a more amenable political situation or whatever — we will have no chance.
The Organisation for Economic Co-operation and Development projects that:
By 2050, the Earth's population is expected to increase from 7 billion to over 9 billion and the world economy is projected to nearly quadruple... A world economy four times larger than today is projected to use 80% more energy in 2050. Without more effective policies, the share of fossil fuel based energy in the global energy mix will still remain at about 85%.
Pushing us far, far beyond the 2 degree target adopted by every nation on earth.
The Alternatives
So, what happens if we don't make the 2 degrees target? James Hansen, the most prominent climate scientist on the planet (head of NASA's Goddard Institute for Space Studies for over 20 years)
says that 3 degrees could mean: "no return within the lifetime of any generation that can be imagined, and the trip will exterminate a large fraction of species on the planet." How about 4 degrees (which would mean 3.5% reductions from 2020 forward)?
According to Kevin Anderson (Great Britian's most prominent climate scientist):
For humanity it's a matter of life or death... We will not make all human beings extinct as a few people with the right sort of resources may put themselves in the right parts of the world and survive. But I think it's extremely unlikely that we wouldn't have mass death at 4C. If you have got a population of nine billion by 2050 and you hit 4C, 5C or 6C, you might have half a billion people surviving.
Yet, as the
International Energy Agency predicts, we're currently on track for 6 degrees of temperature change.
The Implications for Kaua'i
At last night's election forum in Kapa'a, not a single one of the eighteen candidates (mayor, state legislature, county council) mentioned climate change (every question was a variation of GMOs, marijuana, traffic, homelessness, and property taxes). Our General Plan makes no mention of climate change. The Garden Island Newspaper repeatedly publishes editorials denying the science of climate change from a known fossil fuel lobbyist.
Yet, on the other hand, our news is full of the current affects of climate change. From
the most active hurricane season in history (including the one barreling down on us right now), to the record breaking water temperatures
and coral bleaching, to
declining trade winds, to this summer
breaking all global historic temperature records.
Significantly (and very under-reported by the media), UH Seagrant, at the request of the Kaua'i County Planning Department, just did the
first comprehensive report on the affects of climate change on Kaua'i and recommended specific adaptation strategies.
It addressed increasing ocean acidity (caused from absorbing Co2), increasing prevalence of major storms and hurricanes, increasing levels of erosion on already stressed beaches (71% of Kaua'i beaches are currently eroding), increasing levels of drought (main Hawaiian islands have all seen more severe drought since 1950s), negative impacts on tourism (related to loss of beaches), threats to our water table from sea level rise, threats to agriculture in low-lying areas, and, most importantly, sea level rise.
The report made it clear that climate change exacerbates our current problems. For example, while pesticide run-off and cesspools are a current concern, climate change magnifies them:
Because the Pacific Islands are almost entirely dependent on imported food, fuel, and material, the vulnerability of ports and airports to extreme events, especially typhoons, is of high concern... Increased coastal inundation could bring toxic soils from agricultural or industrial practices into the marine environment. Flooded wastewater systems, including treatment plants, cesspools, and septic tanks, could bring untreated sewage into waterways. In addition, saltwater intrusion into valuable water supplies affects household and agricultural water quality and supply...
While the report gave a range of possible sea level rise scenarios, it landed with this: "based on the best available science, a range of sea-level rise of 1 foot by 2050 and 3 feet by 2100 is a reasonable, and possibly even conservative planning target for Kaua'i and other Hawaiian islands." What does that optimistic 3' feet look like?
Much of Kapa'a town will be under water; our prime agricultural lands in Mana, the Hanalei river valley, and in the Kealia river valley will be threatened; and all low-lying residential areas in Anahola, Hanapepe and Ha'ena will likely have to be abandoned. And this optimistic sea-level rise scenario will occur by the time my child (if I were to have one in the next year) is 85 years old.
The map of Kapa'a below accounts only for high tide levels at 3' and not for increased erosion (100' of erosion for every 1' of sea level rise) or storm surges (check out
NOAA's database for a look at the effects of sea level rise for all of Hawai'i).
The Seagrant report recommends numerous adaptation measures, such as updating the General Plan to include the effects of sea level rise, taking steps towards community resilience, and using climate change and coastal hazards as a "major driver for land use decisions." They also recommend that the Public Access, Open Space, and Natural Resources Preservation Fund Commission utilize the fund to finance
"the acquisition of vulnerable shoreline lands that can protect natural resource areas for public use, including areas that could serve as refugia for species impacted by SLR, or areas that could be appropriate sites for coastal habitat creation or restoration."
While the report focused heavily on the effects of sea level rise and adaptation to those effects, there was also a very short piece on mitigation (written by Ben Sullivan of the County of Kaua'i). The mitigation section reiterates the importance of moving to renewable energy, highlighted KIUC's success in doing so, and mentions the importance of mode shifting (getting people out of cars) and alternative fuels. Yet, it admits defeat when it comes to tourism and air travel: "The local economy is dependent primarily on tourism, which is in turn wholly dependent on air transportation. Very few solutions to this challenge have surfaced to date."
While Hawai'i ranks relatively high among the US on per capita energy consumption (
32nd in the US), when we account for the fact that
20 cents of every dollar spent in Hawai'i comes from the tourist industry (which, in turn, is wholly reliant on air travel) and that 90% of our goods come from overseas we skyrocket to having the largest carbon footprint in the nation.
The Point
As I mentioned in my opening, the issues that I have been writing about for the past year are important to me because of climate change. We need to reduce inequality, strive for community resilience, reduce our usage of fossil fuels, and increase local agriculture and manufacturing because of the imminent threat of climate change. As Naomi Klein writes in
her latest book,
if these sorts of demand-side emission reductions are to take place on anything like the scale required, they cannot be left to the lifestyle decisions of earnest urbanites who like going to farmers' markets on Saturday afternoons and wearing up-cycled clothing. We will need comprehensive policies and programs that make low-carbon choices easy and convenient for everyone. Most of all, these policies need to be fair, so that the people already struggling to cover the basics are not being asked to make additional sacrifice to offset the excess consumption of the rich. That means cheap public transit and clean light rail accessible to all; affordable, energy efficient housing along those transit lines; cities planned for high-density living; bike lanes in which riders aren't asked to risk their lives to get to work; land management that discourages sprawl and encourages local, low-energy forms of agriculture; urban design that clusters essential services like schools and health care along transit routes and in pedestrian-friendly areas; programs that require manufacturers to be responsible for the electronic waste they produce, and to radically reduce built-in redundancies and obsolescences.
Most importantly, we need to figure out how to do all of this while we contract the economy. Some drivers of growth can be positive (for example the growth of renewable energy). Tourism, in limited form, can help provide financial incentive to preserve resources that may otherwise be exploited. And biotech can drive our local food industry, by adapting locally developed seed to a rapidly changing climate and by financially supporting mutually beneficial local initiatives towards self-sufficiency (such as a food science department at KCC).
But, how do we take the difficult steps that will become increasingly necessary? How can we wean ourselves off of tourism? How can we achieve 100% clean, renewable energy for Kaua'i? How can we produce all of our own food? How can we manufacture our own goods? How can we ensure that those who can afford it least (our low income families) aren't hardest hit by the effects of climate change? And how do we do all of this before crop failures in the mid west cause food prices to spike, before the waves lap over Kuhio Hwy, and before the complete collapse of our coral reefs?
Complex questions require complex answers; they require visionary leaders who can make hard decisions; they require active engagement in the democratic process; and they require consumer support. There is no environmental bill of rights or one step solution that will get us there. For Kaua'i, the answers lie in billions of decisions from our mayor, to our state representatives, to our county council members to our own personal consumer habits.
And, because Naomi Klein says it best, I'll close with her words:
...the measures we must take to secure a just, equitable, and inspiring transition away from fossil fuels clash directly with our reigning economic orthodoxy at every level. As we will see, such a shift breaks all the ideological rules-- it requires visionary long-term planning, tough regulation of business, higher levels of taxation for the affluent, big public sector expenditure, and in many cases reversals of core privatizations in order to give communities the power to make the changes they desire. In short, it means changing everything about how we think about the economy so that our pollution doesn't change everything about our physical world.