Tag Archives: climate change

the Amazon

No, not Amazon.com. As I was explaining to my six year old son recently, before it was a tech company, it was a river and a river basin. Anyway, if you want to be depressed, you can read this Intercept article stating that the current Brazilian government is systematically and intentionally trying to destroy the rain forest as fast as possible.

In the last half-century, about one-fifth of this forest, or some 300,000 square miles, has been cut and burned in Brazil, whose borders contain almost two-thirds of the Amazon basin. This is an area larger than Texas, the U.S. state that Brazil’s denuded lands most resemble, with their post-forest landscapes of silent sunbaked pasture, bean fields, and evangelical churches. This epochal deforestation — matched by harder to quantify but similar levels of forest degradation and fragmentation — has caused measurable disruptions to regional climates and rainfall. It has set loose so much stored carbon that it has negated the forest’s benefit as a carbon sink, the world’s largest after the oceans. Scientists warn that losing another fifth of Brazil’s rainforest will trigger the feedback loop known as dieback, in which the forest begins to dry out and burn in a cascading system collapse, beyond the reach of any subsequent human intervention or regret. This would release a doomsday bomb of stored carbon, disappear the cloud vapor that consumes the sun’s radiation before it can be absorbed as heat, and shrivel the rivers in the basin and in the sky…

Imazon, a Brazilian research center, reports deforestation in the first months of 2019 jumped more than 50 percent compared to the amount during the same period in 2018. Half of this deforestation has occurred illegally in protected areas, including hundreds of Indigenous lands that cover a quarter of Brazil’s Amazon and provide a crucial buffer for much of the rest. (In the rainforest bastion state of Amazonas, Indigenous lands account for close to a third of the standing forest.) The Indigenous groups of the region have seen this before. During the runaway deforestation of the 1970s, ’80s, and ’90s, they witnessed and were devastated by an “arc of fire” that blazed along the routes of the first penetration roads into the western Amazon. By the late 1980s, a burning crescent swept down from the northern Amazonian city of Belém, through the states of Pará, Mato Grosso, Rondônia, and Acre. It burned brightest in Rondônia, where the smoke and ash from hundreds of raging fires were visible to the naked eyes of astronauts in high orbit.

the India water situation

I’m reading that a major city in India, Chennai, has run out of water. (This article is a couple weeks old – the situation might have changed since then, but they are on a knife edge regardless.) Chennai is India’s sixth largest city, with a population around 4 million. It is also a major business center. My employer for example has a large operation in Chennai, and it is not exactly what I would call a major multinational corporation. So if professional workers are being told to go home and get in line for drinking water rations, that sounds pretty serious.

I remember hearing about groundwater depletion in India for years, and it appears that has gotten to the point where if rainfall patterns are unexpected, there is no groundwater to fall back on as they have in the past. And if cities don’t have drinking water, what does that mean for industry and agriculture? This would seem to be bad news for the food supply. Sure, India can import food, but what happens when this occurs in other food-producing countries (like the U.S. Great Plains and major rice growers in Southeast Asia), and India is also competing with China and other populous countries in Asia and Africa for dwindling food stocks. Food is the nexus of land, water, and climate.

It is not just Chennai. According to the World Economic Forum,

As of 10 June, around 44% of the country was affected by various degrees of drought, due to a heatwave that has seen Delhi record its highest ever June temperature of 48℃. While south of the capital, the Rajasthan city of Churu saw highs of more than 50℃, making it one of the hottest places on Earth.

Around 600 million people are dealing with high-to-extreme water shortages, according to a 2018 report by NITI Aayog, a policy think tank for the Indian government…

By 2030, it’s predicted that 40% of the population will have no access to drinking water – and 21 cities, including Chennai and New Delhi, will run out of groundwater, impacting 100 million people, according to NITI Aayog.

Here are a few more eye-opening, if not jaw-dropping, quotes from Hong Kong-based Asia Times:

The southwest monsoons remain the biggest source of water in the subcontinent. The monsoons lead to a combination of water sources supporting human habitats that includes glaciers, surface irrigation and ground water. But redundancy and surplus have gone missing from this once abundant system. Taking their place are galloping shortages…

Mukherjee is one of the editors of a landmark study that was published earlier this year. It predicts a terrible loss of the glaciers that dot the Hindu Kush-Himalaya region. “The Hindu Kush Himalaya Assessment” says that even if urgent global action on climate change is able to limit global warning to 1.5 degrees centigrade, it will still lead to a loss of a third of the glaciers in the region by the year 2100…

This has major implications for India, China, Pakistan, Nepal and Bangladesh. While the nearly 250 million who live in the Hindu Kush-Himalaya region will be most impacted from the outset, another 1.65 billion people who depend on the glacier-fed rivers are primarily at risk.

So there you have it – India historically has been supplied by redundant water sources including glacier-fed rivers, groundwater, and seasonal rainfall. Two of those three seem to be in doubt, and that leaves them at the mercy of whether the monsoon happens as expected each year or not.

India is a major democracy with a lot of technical and agricultural know-how. If they are not solving these problems, it does not seem to me to bode well for the rest of the world.

It also occurs to me that reducing carbon emissions is not the solution to this urgent problem. At least, governments can’t put all their eggs in that basket. They will have to invest in major water conservation and water reuse initiatives, and possibly high-tech and energy intensive measures like desalination.

April 2019 in Review

Most frightening and/or depressing story:
  • The most frightening and/or depressing story often involves nuclear weapons and/or climate change, because these are the near-term existential threats we face. Oliver Stone has added a new chapter to his 2012 book The Untold History of the United States making a case that we have lost serious ground on both these issues since then. In a somewhat related depressing story, the massive New Orleans levy redesign in response to Hurricane Katrina does not appear to have made use of the latest climate science.
Most hopeful story: Most interesting story, that was not particularly frightening or hopeful, or perhaps was a mixture of both:
  • Genetic engineering of humans might have to play a big role in eventual colonization of other planets, because the human body as it now exists may just not be cut out for long space journeys. In farther future space colonization news, I linked to a video about the concept of a “Dyson swarm“.

New Orleans levees are upgraded, but did not take climate change into account

A $14 billion upgrade to New Orleans’s flood protection system has been completed, as recommended following Hurricane Katrina in 2005. For the U.S., this is a pretty massive and fast public works project. I haven’t delved into any technical details and am only going on this Scientific American article, but it sounds like it will not provide the level of protection originally envisioned.

The agency’s projection that the system will “no longer provide [required] risk reduction as early as 2023” illustrates the rapidly changing conditions being experienced both globally as sea levels rise faster than expected and locally as erosion wipes out protective barrier islands and marshlands in southeastern Louisiana….

Sea-level rise raises questions about whether the protective system—known officially as the Greater New Orleans Hurricane and Storm Damage Risk Reduction System—should be built to a higher standard.
When Congress approved funding after Katrina, it required the system to protect against a so-called 100-year flood, which has a 1% likelihood of occurring in any year.

That’s a laudable attempt to communicate probability to the public. But if the Army Corps is really using the “100-year flood” as its design standard, and if it’s doing that because Congress prescribed it, and if they did not consider coastal erosion or adequately consider sea level rise, this may be yet another sign the U.S. is slipping behind its peer group of advanced nations. The Dutch are not doing this, they are providing a much higher level of protection to coastal population centers based on the economic value of doing so. I want to believe Congress will do the right thing and protect our coastal population centers when push comes to shove, but I am not encouraged.

Of course, if it protects from a 1-chance-in-50 event rather than a 1-chance-in-100 event, this is not nothing. Each year, and over the course of several decades or a century, your city and personal property either floods or it doesn’t. When it does, you either have practical and financial plans in place to help you bounce back, or you don’t. So good planning, good public works design, good building codes and land use controls, insurance and disaster resilience planning all matter. Some academics, professionals and bureaucrats within the U.S. might be talking about these things, but our political system is certainly not on the cutting edge when it comes to putting them into practice.

Oliver Stone on Recent U.S. History

Oliver Stone is adding a chapter to his 2012 book The Untold History of the United States covering 2012-2019. He basically argues that in 2012 things were not great but getting better, while in 2019 “the unthinkable has become thinkable”. The litany includes continued threats of NATO expansion, wars in the greater Middle East, backing out of the Iran deal and historic Cold War-era nuclear weapons treaties, expanding the nuclear arsenal, threatening behavior against North Korea and China, and continuing to deny and ignore climate change.

In my view, while the U.S. adversaries are not blameless, we need to understand that their governments feel legitimately threatened by our government. The U.S. government has the world’s largest military, the world’s largest nuclear arsenal, and has used its military frequently and unilaterally against weaker countries. A path to real peace would have to include some credible means of convincing other countries that we will not attack except in self defense, and we don’t have the track record to convince anyone of this. And in a world where the food supply and coastal population centers are going to start coming under threat from nature, humanity needs to be unified and undistracted to have a chance to deal with other threats.

March 2019 in Review

Most frightening and/or depressing story:

Most hopeful story:

  • The Green New Deal, if fleshed out into a serious plan, has potential to slow or reverse the decline of the United States.

Most interesting story, that was not particularly frightening or hopeful, or perhaps was a mixture of both:

  • China is looking into space-based solar arrays. Also, injecting sulfate dust into the atmosphere could actually boost rice yields because rice is more sensitive to temperature than light, at least within the ranges studied. This all suggests that solutions to climate change that do not necessarily involve an end to fossil fuel burning and carbon emissions are possible with existing or very near future technology.


Allan Savory

Here’s an interesting 2013 TED talk by Allan Savory, where he talks about his theory that intentionally grazing livestock at high densities, while keeping them bunched and moving as though they were a herd of wild herbivores pursued by predators, can reverse desertification and make a big dent in climate change. It all sounds very scientific and proven when he explains it. I also recall though that there are criticisms that he is resistant to sharing his research results with other scientists in a way that would allow them to reproduce his research and verify his findings, which a serious scientist would normally do.

geoengineering and rice yields

Would injecting sulfate particles into the atmosphere to counteract global warming affect rice yields in the tropics? Yes, according to this paper, but not in the direction I guessed. Even though rice is a tropical crop, it is sensitive to temperature – higher temperatures decrease its yield, and the effect of lowering temperature would be greater than the effect of having less light, leading to increased yield. At least in this study which wired together a complicated climate model with a complicated rice yield model.

climate, conflict, and migration

A new paper explores causal links between climate change effects (like drought, famine, and high food prices), violent conflict, and mass migration. And yes, the conclusion seems to be that climate change can be a big driver when the seeds of social and economic instability are already in place.

Climate, conflict and forced migration
Despite the lack of robust empirical evidence, a growing number of media reports attempt to link climate change to the ongoing violent conflicts in Syria and other parts of the world, as well as to the migration crisis in Europe. Exploiting bilateral data on asylum seeking applications for 157 countries over the period 2006–2015, we assess the determinants of refugee flows using a gravity model which accounts for endogenous selection in order to examine the causal link between climate, conflict and forced migration. Our results indicate that climatic conditions, by affecting drought severity and the likelihood of armed conflict, played a significant role as an explanatory factor for asylum seeking in the period 2011–2015. The effect of climate on conflict occurrence is particularly relevant for countries in Western Asia in the period 2010–2012 during when many countries were undergoing political transformation. This finding suggests that the impact of climate on conflict and asylum seeking flows is limited to specific time period and contexts.

more on the Green New Deal

I’m reading a lot about the Green New Deal today. But after reading about it, I decided to just go and read the actual thing itself. It’s easy to be cynical about something like this by saying it has not been developed into an implementable plan or set of projects yet (even though it mentions “projects”, it doesn’t really contain any), and that would be true. It’s really a vision and goal-setting document. Getting people on board with a vision is the first step in a successful plan. It’s a hard step and it appears to have been done pretty well in a pretty short period of time.

The second step is developing an implementable plan to achieve the vision and goals. This is a harder step. Some people are comparing this to the 2008 stimulus program, but that was not a plan because it had no clearly articulated objectives or goals other than to throw a lot of money at a lot of projects that had already been defined by someone in the past according to whatever their goals were at the time. There was no time to develop a plan in that case – in fact, the projects had to be “shovel ready” meaning taking the time to plan anything was explicitly forbidden. This time, there actually is the possibility of taking the time to develop a plan. Developing a really good plan takes some time though. To do it well, you have to look at an enormous number of projects, policies, and other measures, consider them in various combinations, and pick a set of them that is reasonably technologically and economically efficient at achieving your goals, acceptable to your major stakeholders even if not their first choice, and implementable. I think some of this planning would have to be done at the local and regional level, preferably at the metro-area scale, although the states could maybe be involved in agriculture and inter-city transportation planning.

Finally, there is implementation. This is the hardest step. Complex institutions have to be created or existing ones repurposed; money has to be disbursed; contracts have to be written, awarded, and administered; job descriptions have to be written and people hired and trained and deployed; projects have to be managed; progress has to be tracked and laws have to be enforced. A critical mass of people involved at all levels has to understand and buy into those goals and how their little cog in the massive machine contributes to them. They have to make all kinds of little decisions and course corrections every day that keep the whole massive enterprise aimed at those goals.

So hard, harder, hardest. But like I said, the hard part is already done! In my career, I’ve seen groups of intelligent and well-educated people try to jump into implementing a bunch of projects without defining goals or having a plan for how they are supposed to tie together and meet the goals. I’ve also seen a brilliant vision translated into a reasonably technologically and economically workable, implementable plan, and then fail because key stakeholders were not on board, or because the people responsible for implementing the plan never understood the vision or how their little piece fit into it, so their millions of small daily decisions gradually caused the program to drift away from a path that was aimed at the goals, and there was no mechanism to bring it back to the path. But to end on a brighter note, if you come up with a brilliant vision, a brilliant plan to achieve it, and then you only implement 25% or even 10% of it, you have achieved something that never would have been achieved if you hadn’t come up with the vision and plan. And you show that it can be done and give others a chance to pick up the fight after you have moved on.

If I have time, I’ll try to tease out in another post what I think the vision and goals actually are, and how I think they could be achieved if I were somehow made emperor.