Tag Archives: climate change

March 2022 in Review

The Ukraine war grinds on as I write on April 7, with the Russian military seemingly pulling back from some areas while slaughtering civilians (hostages?) farther east and south. I proffered some limited views on the situation and media coverage of the war during the month, but I won’t go into it below.

Most frightening and/or depressing story: What causes violence? It’s the (prohibition and war on) drugs, stupid. Or at least, partly/mostly, the drugs.

Most hopeful story: There are meaningful things individuals can do to slow climate change, even as governments and industries do too little too late. For example, eat plants, limit driving and flying, and just replace consumer goods as they wear out. I’m mostly on board except that I think we need peace and stability for the long term survival of both our civilization and planetary ecosystem, and we are going to need to travel and get to know one another to give that a chance.

Most interesting story, that was not particularly frightening or hopeful, or perhaps was a mixture of both: Ready.gov has posted helpful information on what to do in case of a nuclear explosion.

EIA Annual Energy Outlook 2022

The U.S. Energy Information Administration (EIA) has a new report out with projections through 2050. The graphs are worth staring at. Here are some takeaways for me.

  • Coal use has crashed from over 20% of energy consumption 10 years ago to around 10% now. The rise in renewable energy mirrors it, from less than 5% to nearly 20%. Natural gas also surged during this period to replace the decline in coal, from around 20 to 30+ percent. Oil just kind of bumps along in the 30-40% range. The projection in 2050 is something like oil 40%, natural gas 35%, renewables 20%, everything else less than 10%.
  • The carbon footprint of electric power generation a decade ago was greater than the transportation sector. It has declined significantly (I assume this reflects the substitution of natural gas and renewables for coal), and is projected to continue to decline. The carbon footprint of transportation and industry is projected to remain relatively flat.
  • The biggest gains in renewable energy are projected to come from solar. Solar is projected to grow regardless of changes in cost, whereas wind and other sources are shown as more sensitive to cost, meaning if cost is high their share stops growing. I assume this has a lot to do with the cost of solar being pretty low already.
  • They show solar energy and battery storage being used extensively to meet peak mid-day demand by 2050.
  • Somewhat disappointing and surprising to me, they show electric vehicles sales only slowly displacing a small portion of gasoline-powered (3%?) vehicle sales over the next 30 years. I hope they are wrong about this one.

I can imagine a past world where safe civilian nuclear technology had been used more widely over the last 50 years or so, and we are not in the climate mess we are in today. Maybe this is even a world where the proliferation of nuclear weapons is less prevalent, but I am not sure about that. This is not the world we live in.

I can imagine a near-future world where homes, businesses, industry, and vehicles are increasingly electrified, and electricity generation is increasingly shifted to renewables. I still think nuclear power might be able to play an important role in this world. But it does not seem like we are headed in the direction of this world, at least not quickly enough to avoid a major train wreck. I hope I am wrong.

heat makes us crazy

Friday, February 25, 2022: resisting…urge…to…comment…on…current…events…I know…nothing…about… (just to pick a random example, the ongoing war in Ukraine)

Extreme heat not only affects our bodies, which we knew, but it exacerbates mental illness too, according to this study in JAMA.

Everybody knows shooting deaths go up when it is hot. I always assumed that people tended to be outside interacting more, especially if they don’t have air conditioning, and that young men in particular just have less to do in the summer months. But maybe there is more to it than that.

January 2022 in Review

Most frightening and/or depressing story: A collapse of the Game of Thrones ice wall holding back the Thwaites glacier in Antarctica could raise average sea levels around the world by one foot, or maybe 10 feet “if it draw the surrounding glaciers with it”. The good news is that no army of zombies would pour out.

Most hopeful story: LED lighting has gotten so efficient that it is a tossup on energy efficiency with daylight coming through a window, because no window is perfectly sealed. Windows still certainly have the psychological advantage.

Most interesting story, that was not particularly frightening or hopeful, or perhaps was a mixture of both: “Big history” is an Australian program that attempts to unify everything from the Big Bang through our current era of intelligent life.

2021: Year in Review

As per usual, I’ll list out and link to the stories I chose as the most frightening, most hopeful, and most interesting each month in 2021. Then I’ll see if I have anything smart to say about how it all fits together.

Survey of the Year’s Stories and Themes

Most frightening and/or depressing stories:

  • JANUARY: A China-Taiwan military conflict is a potential start-of-World-War-III scenario. This could happen today, or this year, or never. Let’s hope for the latter. This is a near-term existential risk, but I have to break my own “rule of one” and give honorable mention to two longer-term scary things: crashing sperm counts and the climate change/fascism/genocide nexus.
  • FEBRUARY: For people who just don’t care that much about plants and animals, the elevator pitch on climate change is it is coming for our houses and it is coming for our food and water.
  • MARCH: In the U.S. upper Midwest (I don’t know if this region is better or worse than the country as a whole, or why they picked it), electric blackouts average 92 minutes per year, versus 4 minutes per year in Japan.
  • APRIL: One of the National Intelligence Council’s scenarios for 2040 involves “far-reaching changes designed to address climate change, resource depletion, and poverty following a global food catastrophe caused by climate events and environmental degradation”.
  • MAY: The Colorado River basin is drying out.
  • JUNE: For every 2 people who died of Covid-19 in the U.S. about 1 additional person died of indirect effects, such as our lack of a functioning health care system and safe streets compared to virtually all our peer countries.
  • JULY: The western-U.S. megadrought looks like it is settling in for the long haul.
  • AUGUST: The U.S. is not prepared for megadisasters. Pandemics, just to cite one example. War and climate change tipping points, just to cite two others. Solutions or at least risk mitigation measures exist, such as getting a health care system, joining the worldwide effort to deal with carbon emissions, and as for war, how about just try to avoid it?
  • SEPTEMBER: The most frightening climate change tipping points may not be the ones we hear the most about in the media (at least in my case, I was most aware of melting ice sheets in Greenland and Antarctica, collapse of ocean circulation patterns). The most damaging may be melting permafrost on land and methane hydrates underwater, both of which contain enormous amounts of methane which could set off a catastrophic and unstoppable feedback loop if released in large quantities.
  • OCTOBER: The technology (sometimes called “gain of function“) to make something like Covid-19 or something much worse in a laboratory clearly exists right now, and barriers to doing that are much lower than other types of weapons. Also, because I just couldn’t choose this month, asteroids can sneak up on us.
  • NOVEMBER: Freakonomics podcast explained that there is a strong connection between cars and violence in the United States. Because cars kill and injure people on a massive scale, they led to an expansion of police power. Police and ordinary citizens started coming into contact much more often than they had. We have no national ID system so the poor and disadvantaged often have no ID when they get stopped. Everyone has guns and everyone is jumpy. Known solutions (safe street design) and near term solutions (computer-controlled vehicles?) exist, but are we going to pursue them as a society? I guess I am feeling frightened and/or depressed today, hence my choice of category here.
  • DECEMBER: Mass migration driven by climate change-triggered disasters could be the emerging big issue for 2022 and beyond. Geopolitical instability is a likely result, not to mention enormous human suffering.

Most hopeful stories:

  • JANUARY: Computer modeling, done well, can inform decisions better than data analysis alone. An obvious statement? Well, maybe to some but it is disputed every day by others, especially staff at some government regulatory agencies I interact with.
  • FEBRUARY: It is possible that mRNA technology could cure or prevent herpes, malaria, flu, sickle cell anemia, cancer, HIV, Zika and Ebola (and obviously coronavirus). With flu and coronavirus, it may become possible to design a single shot that would protect against thousands of strains. It could also be used for nefarious purposes, and to protect against that are ideas about what a biological threat surveillance system could look like.
  • MARCH: I officially released my infrastructure plan for America, a few weeks before Joe Biden released his. None of the Sunday morning talk shows has called me to discuss so far. Unfortunately, I do not have the resources of the U.S. Treasury or Federal Reserve available to me. Of course, neither does he unless he can convince Congress to go along with at least some portion of his plans. Looking at his proposal, I think he is proposing to direct the fire hoses at the right fires (children, education, research, water, the electric grid and electric vehicles, maintenance of highways and roads, housing, and ecosystems. There is still no real planning involved, because planning needs to be done in between crises and it never is. Still, I think it is a good proposal that will pay off economically while helping real people, and I hope a substantial portion of it survives.
  • APRIL: Giant tortoises reach a state of “negligible senescense” where they simply don’t age for a long time. Humans are distant relatives of giant tortoises, so maybe we can aspire to this some day. They are not invulnerable to injury and disease.
  • MAY: An effective vaccine for malaria may be on the way. Malaria kills more children in Africa every year than Covid-19 killed people of all ages in Africa during the worst year of the pandemic. And malaria has been killing children every year for centuries and will continue long after Covid-19 is gone unless something is done.
  • JUNE: Masks, ventilation, and filtration work pretty well to prevent Covid transmission in schools. We should learn something from this and start designing much healthier schools and offices going forward. Design good ventilation and filtration into all buildings with lots of people in them. We will be healthier all the time and readier for the next pandemic. Then masks can be slapped on as a last layer of defense. Enough with the plexiglass, it’s just stupid and it’s time for it to go.
  • JULY: A new Lyme disease vaccine may be on the horizon (if you’re a human – if you are a dog, talk to your owner about getting the approved vaccine today.) I admit, I had to stretch a bit to find a positive story this month.
  • AUGUST: The Nordic welfare model works by providing excellent benefits to the middle class, which builds the public and political support to collect sufficient taxes to provide the benefits, and so on in a virtuous cycle. This is not a hopeful story for the U.S., where wealthy and powerful interests easily break the cycle with anti-tax propaganda, which ensure benefits are underfunded, inadequate, available only to the poor, and resented by middle class tax payers.
  • SEPTEMBER: Space-based solar power could finally be in our realistic near-term future. I would probably put this in the “interesting” rather than “hopeful” category most months, but I really struggled to come up with a hopeful story this month. I am at least a tiny bit hopeful this could be the “killer app” that gets humanity over the “dirty and scarce” energy hump once and for all, and lets us move on to the next layer of problems.
  • OCTOBER: The situation with fish and overfishing is actually much better than I thought.
  • NOVEMBER: Urban areas may have some ecological value after all.
  • DECEMBER: Covid-19 seems to be “disappearing” in Japan, or at least was before the Omicron wave. Maybe lessons could be learned. It seems possible that East Asian people have at least some genetic defenses over what other ethnic groups have, but I would put my money on tight border screening and an excellent public health care system. Okay, now I’m starting to feel a bit depressed again, sitting here in the U.S. where we can’t have these nice things thanks to our ignorant politicians.

Most interesting stories, that were not particularly frightening or hopeful, or perhaps were a mixture of both:

  • JANUARY: There have been fabulous advances in note taking techniques! Well, not really, but there are some time honored techniques out there that could be new and beneficial for many people to learn, and I think this is an underappreciated productivity and innovation skill that could benefit people in a lot of areas, not just students.
  • FEBRUARY: At least one serious scientist is arguing that Oumuamua was only the tip of an iceberg of extraterrestrial objects we should expect to see going forward.
  • MARCH: One study says 1-2 days per week is a sweet spot for working from home in terms of a positive economic contribution at the national scale. I think it is about right psychologically for many people too. However, this was a very theoretical simulation, and other studies attempting to measure this at the individual or firm scale have come up with a 20-50% loss in productivity. I think the jury is still out on this one, but I know from personal experience that people need to interact and communicate regularly for teams to be productive, and some people require more supervision than others, and I don’t think technology is a perfect substitute for doing these things in person so far.
  • APRIL: Hydrogen fuel cells may finally be arriving. Not so much in the U.S., where we can’t have nice things.
  • MAY: I learned about Lawrence Kohlberg, who had some ideas on the use of moral dilemmas in education.
  • JUNE: The big U.S. government UFO report was a dud. But what’s interesting about it is that we have all quietly seemed to have accepted that something is going on, even if we have no idea what it is, and this is new.
  • JULY: “Cliodynamics” is an attempt at a structured, evidence-based way to test hypotheses about history.
  • AUGUST: Ectogenesis is an idea for colonizing other planets that involves freezing embryos and putting them on a spaceship along with robots to thaw them out and raise them. Fungi could also be very useful in space, providing food, medicine, and building materials.
  • SEPTEMBER: Philip K. Dick was not only a prolific science fiction author, he also developed a comprehensive theory of religion which could possibly even be the right one. Also, possibly related but not really, if there are aliens out there they might live in creepy colonies or super-organisms like ants or termites.
  • OCTOBER: I thought about how to accelerate scientific progress: “[F]irst a round of automated numerical/computational experiments on a huge number of permutations, then a round of automated physical experiments on a subset of promising alternatives, then rounds of human-guided and/or human-performed experiments on additional subsets until you hone in on a new solution… [C]ommit resources and brains to making additional passes through the dustbin of rejected results periodically…” and finally “educating the next generation of brains now so they are online 20 years from now when you need them to take over.” Easy, right?
  • NOVEMBER: Peter Turchin continues his project to empirically test history. In this article, he says the evidence points to innovation in military technologies being driven by “world population size, connectivity between geographical areas of innovation and adoption, and critical enabling technological advances, such as iron metallurgy and horse riding“. What does not drive innovation? “state-level factors such as polity population, territorial size, or governance sophistication“. As far as the technologies coming down the pike in 2022, one “horizon scan” has identified “satellite megaconstellations, deep sea mining, floating photovoltaics, long-distance wireless energy, and ammonia as a fuel source”.
  • DECEMBER: Time reminded us of all the industries Elon Musk has disrupted so far: human-controlled, internal-combustion-fueled automobiles; spaceflight; infrastructure construction (I don’t know that he has really achieved any paradigm shifts here, but not for lack of trying), “artificial intelligence, neurotechnology, payment systems and cryptocurrency.” I’m not sure I follow a couple of these, but I think they missed satellites.

Continuing Signs of U.S. Relative Decline

Signs of U.S. decline relative to our peer group of advanced nations are all around us. I don’t know that we are in absolute decline, but I think we are now below average among the most advanced countries in the world. We are not investing in the infrastructure needed in a modern economy just to reduce friction and let the economy function. The annual length of electric blackouts in the U.S. (hours) compared to leading peers like Japan (minutes) is just one telling indicator. In March, I looked at the Build Back Better proposal and concluded that it was more like directing a firehose of money at a range of problems than an actual plan, but I hoped at least some of it would happen. My rather low but not zero expectations were met, as some limited funding was provided for “hard infrastructure” and energy/emissions projects, but little or nothing (so far, as I write this) to address our systemic failures in health care, child care, or education. The crazy violence on our streets, both gun-related and motor vehicle-related, is another indicator. Known solutions to all these problems exist and are being implemented to various extents by peer countries. Meanwhile our toxic politics and general ignorance continue to hold us back. Biden really gave it his best shot – but if this is our “once in a generation” attempt, we are headed down a road where we will no longer qualify as a member of the pack of elite countries, let alone its leader.

The Climate Change, Drought, Food, Natural Disaster, Migration and Geopolitical Instability Nexus

2021 was a pretty bad year for storms, fires, floods, and droughts. All these things affect our homes, our infrastructure, our food supply, and our water supply. Drought in particular can trigger mass migration. Mass migration can be a disaster for human rights and human dignity in and of itself, and managing it effectively is difficult even for well-intentioned governments. But an insidious related problem is that migration pressure can tend to fuel right wing populist and racist political movements. We see this happening all over the world, and the situation seems likely to get worse.

Tipping Points and other Really Bad Things We Aren’t Prepared For

We can be thankful that nothing really big and new and bad happened in 2021. My apologies to anyone reading this who lost someone or had a tough year. Of course, plenty of bad things happened to good people, and plenty of bad things happened on a regional or local scale. But while Covid-19 ground on and plenty of local and regional-scale natural disasters and conflicts occurred, there were no new planetary-scale disasters. This is good because humanity has had enough trouble dealing with Covid-19, and another major disaster hitting at the same time could be the one that brings our civilization to the breaking point.

So we have a trend of food insecurity and migration pressure creeping up on us over time, and we are not handling it well even given time to do so. Maybe we can hope that some adjustments will be made there to get the world on a sustainable track. Even if we do that, there are some really bad things that could happen suddenly. Catastrophic war is an obvious one. A truly catastrophic pandemic is another (as opposed to the moderately disastrous pandemic we have just gone through.) Creeping loss of human fertility is one that is not getting much attention, but this seems like an existential risk if it were to cross some threshold where suddenly the global population starts to drop quickly and we can’t do anything about it. Asteroids were one thing I really thought we didn’t have to worry much about on the time scale of any human alive today, but I may have been wrong about that. And finally, the most horrifying risk to me in the list above is the idea of an accelerating, runaway feedback loop of methane release from thawing permafrost or underwater methane hydrates.

We are almost certainly not managing these risks. These risks are probably not 100% avoidable, but since they are existential we should be actively working to minimize the chance of them happening, preparing to respond in real time, and preparing to recover afterward if they happen. Covid-19 was a dress rehearsal for dealing with a big global risk event, and humanity mostly failed to prepare or respond effectively. We are lucky it was one we should be able to recover from as long as we get some time before the next body blow. We not only need to prepare for much, much worse events that could happen, we need to match our preparations to the likelihood of more than one of them happening at the same time or in quick succession.

Technological Progress

Enough doom and gloom. We humans are here, alive, and many of us are physically comfortable and have much more leisure time than our ancestors. Our social, economic, and technological systems seem to be muddling through from day to day for the time being. We have intelligence, science, creativity, and problem solving abilities available to us if we choose to make use of them. Let’s see what’s going on with technology.

Biotechnology: The new mRNA technology accelerated by the pandemic opens up potential cures for a range of diseases. We need an effective biological surveillance system akin to nuclear weapons inspections (which we also need) to make sure it is not misused (oops, doom and gloom trying to creep in, but there are some ideas for this.) We have vaccines on the horizon for diseases that have been plaguing us for decades or longer, like malaria and Lyme disease. Malaria kills more children worldwide, year in and year out, than coronavirus has killed per year at its peak.

Promising energy technologies: Space based solar power may finally be getting closer to reality. Ditto for hydrogen fuel cells in vehicles, although not particularly in the U.S. (I’m not sure this is preferable to electric vehicles for everyday transportation, but it seems like a cleaner alternative to diesel and jet fuel when large amounts of power are needed in trucking, construction, and aviation, for example.)

Other technologies: We are actually using technology to catch fish in more sustainable ways, and to grow fish on farms in more sustainable ways. We are getting better at looking for extraterrestrial objects, and the more we look, the more of them we expect to see (this one is exciting and scary at the same time). We are putting satellites in orbit on an unprecedented scale. We have computers, robots, artificial intelligence of a sort, and approaches to use them to potentially accelerate scientific advancements going forward.

The State of Earth’s Ecosystems

The state and trends of the Earth’s ecosystems continue to be concerning. Climate change continues to churn through the public consciousness and our political systems, and painful as the process is I think our civilization is slowly coming to a consensus that something is happening and something needs to be done about it (decades after we should have been able to do this based on the evidence and knowledge available.) When it comes to our ecosystems, however, I think we are in the very early stages of this process. This is something I would like to focus on in this blog in the coming year. My work and family life are busy, and I have decided to take on an additional challenge of becoming a student again for the first time in the 21st century, but somehow I will persevere. If you are reading this shortly after I write it in January 2022, here’s to good luck and prosperity in the new year!

Project Censored Top 25 Stories of 2021

Let’s see what Project Censored has come up with as their top 25 “censored” stories of 2021. “Censored” has a broad definition here which includes “under-reported”. News stories are under-reported when there is no market for them in our mostly profit-driven media. Anyway, here are a handful that caught my eye:

  • “Coastal darkening” – I hadn’t heard this term, but it encompasses organic matter in the water (from farms and urban runoff and wastewater), algal blooms, and sediment stirred up by human activity. These are all forms of water pollution scientists and engineers have been familiar with for a long time. Solutions are known, but the scale of the problem and cost of dealing with it is difficult. Our industrialized, urbanized, heavily populated civilization creates these forms of pollution. We should appreciate that a lot of money and hard work go on behind the scenes to make these problems much, much less bad than they would be if nothing was done – wastewater treatment, etc. But still, the scale of the problem is daunting to solve completely and we prefer to pay in environmental damage which affects everybody a little bit rather than divert the money and effort it would require to solve them completely. Under the basic economic principle of scarcity, something else would have to give if we did this, at least in the near- to medium-term. In the long term, there is a virtuous cycle where once we get started, technology tends to improve and we learn by doing. But cynical politicians elected on 2-4 year cycles are not going to pitch these ideas to the public, even if they understand them.
  • The pollutants mentioned above (organic matter, nutrients, etc.) are yucky but at least biodegradable. Another article is about microplastics and PFAS in the ocean. They are going to be there until the end of time now, but we could start working on trying not to add more of them.
  • “tens of thousands of satellites” – driven by civilian communications but inevitably useful for military applications. Companies like SpaceX are getting billions of dollars of military-industrial-complex money.
  • factory farming creates a risk for future pandemics – the article is about “U.S. factory farming”, but even if we invented it, it is being done all over the world, and the scale of what is done in Asia dwarfs anything the U.S. or Europe does at this point
  • things are not good for Amazon (the rain forest)
  • You could think of the social cost of past carbon emissions by industrial economies as a kind of debt owed to countries that are less industrialized or have industrialized more recently. That would mean that they have taken up much more than their fair share of the atmosphere’s and ocean’s ability to absorb emissions over time. The US, UK and Europe would probably prefer to focus on their share of current annual emissions rather than their share of cumulative emissions since they got the first lumps of coal in their Christmas stockings and burned them a couple centuries ago.
  • The sky is up, the Earth is down, and US drug prices are still insane. The article estimates the human toll of this in terms of premature deaths.

September 2021 in Review

Most frightening and/or depressing story: The most frightening climate change tipping points may not be the ones we hear the most about in the media (at least in my case, I was most aware of melting ice sheets in Greenland and Antarctica, collapse of ocean circulation patterns). The most damaging may be melting permafrost on land and methane hydrates underwater, both of which contain enormous amounts of methane which could set off a catastrophic and unstoppable feedback loop if released in large quantities.

Most hopeful story: Space-based solar power could finally be in our realistic near-term future. I would probably put this in the “interesting” rather than “hopeful” category most months, but I really struggled to come up with a hopeful story this month. I am at least a tiny bit hopeful this could be the “killer app” that gets humanity over the “dirty and scarce” energy hump once and for all, and lets us move on to the next layer of problems.

Most interesting story, that was not particularly frightening or hopeful, or perhaps was a mixture of both: Philip K. Dick was not only a prolific science fiction author, he also developed a comprehensive theory of religion which could possibly even be the right one. Also, possibly related but not really, if there are aliens out there they might live in creepy colonies or super-organisms like ants or termites.

China and thorium reactors

China is moving ahead with thorium-based nuclear reactors, at least at the pilot scale. It is based on a design that the U.S. pioneered and then abandoned.

When China switches on its experimental reactor, it will be the first molten-salt reactor operating since 1969, when US researchers at the Oak Ridge National Laboratory in Tennessee shut theirs down. And it will be the first molten-salt reactor to be fuelled by thorium. Researchers who have collaborated with SINAP say the Chinese design copies that of Oak Ridge, but improves on it by calling on decades of innovation in manufacturing, materials and instrumentation…

Molten-salt reactors are just one of many advanced nuclear technologies China is investing in. In 2002, an intergovernmental forum identified six promising reactor technologies to fast-track by 2030, including reactors cooled by lead or sodium liquids. China has programmes for all of them.

Some of these reactor types could replace coal-fuelled power plants, says David Fishman, a project manager at the Lantau Group energy consultancy in Hong Kong. “As China cruises towards carbon neutrality, it could pull out [power plant] boilers and retrofit them with nuclear reactors.”

Nature

I’ve come around to the idea that it was misguided for environmental activists in many countries to essentially shut down a shift toward nuclear power over the past 50 years or so. Whatever the short-term risks, they would have been smaller than the long-term risks of fossil fuels, many of which are now locked in. Maybe thorium and molten salt are technologies we should be making available to developing countries to ease nuclear weapons proliferation pressure. We still need to double down on progress toward true renewables at the same time.

How do you climate proof a city?

In the past couple days, I’ve read a couple articles on how to manage flood risk in cities (New York City, in particular). In my opinion, and to oversimplify, a lot of it is about managing elevations in building codes for private property and in design standards for public property, and avoiding or carefully managing development in floodplains.

From MIT Technology Review:

  • “more permeable architecture, like green roofs and rain gardens” – I think this is a great idea, and full disclosure, it is part of what I do for a living. But it doesn’t help that much in really enormous storms, or in flooding of major rivers and coastlines. It helps to manage small- to medium- storms, which cause a lot of inconvenience and damage over time, and it helps to manage water quality.
  • Also, “less concrete”. Amen to this, although one idea of a city is to build at a high density in one spot so you can leave a lot of other spots undeveloped. We don’t do this well in the U.S. because of political fragmentation and the car/highway/oil industry propaganda we are bombarded with on Monday Night Football.
  • “upgraded pumps and drainage pipes” – well, yes. Figure out what you think the peak flows are going to be 50-100 years from now, and then modify your building codes and design standards to move or temporarily store that amount of water. Then, as your long-lived infrastructure gradually wears out, upgrade to the new standards, always keeping an eye on changes in projections and changes in technology.
  • “sea barriers and coastal protections” – a no-brainer, but not much help in a storm like Ida which was a rainfall-runoff and river flooding event in the Northeast. If anything, you want to get the water to the ocean quicker so you don’t want anything in the way! Of course, sea level rise and storm surges can come from the ocean side at the same time, so you have to take all of this into account based on your risk tolerance and the value of property you are trying to protect.
  • “proposed solutions ranging from social strategies, like educating local city councils on flood risks” – because political fragmentation, you can only ask nicely and hope other jurisdictions do something. You would also like homeowners/businesses to minimize runoff where practical and have insurance to cover their losses.
  • “green infrastructure like floodable park walkways, as well as a basketball court designed to hold water during major flooding.” – good idea, this is like an engineered floodplain, which you can dry out, hose off, and use for something else most of the time when it is not raining. It’s hard for these measures to deal with truly enormous quantities of water, but they can help in more localized urban flash flooding events.
  • Legalize basement apartments, because people who live in illegal ones tend to be ineligible or afraid to get help.
  • The story also references a flood risk study done for NYC by the Danish. This is always a good idea – collect data, map vulnerable areas, have computer models up and running to assess future risks (again, full disclosure, you can pay me to do this…) The Danish are good at this. So are the Dutch, and yes, my fellow geographically challenged Americans, the Danish and Dutch are different (but either will do).

Another article in Slate lists a couple more ideas for NYC:

  • “expand upon the modeling completed for this effort and continue developing a citywide hydrologic and hydraulic (H&H) model to better estimate runoff flow for various climate scenarios to be included in the drainage planning process.” Slate calls this “policy gibberish”. Okay Slate author, just leave it to the experts if you don’t want to try to understand it.
  • “Plant more trees” – I love trees. Again, mostly helpful in smaller to medium size storms, and for water quality. Also great for cooling, habitat and biodiversity, carbon sequestration, and mental health among many other things. During big storms they will actually cause some damage and even deaths. But the benefits of trees far outweigh the costs. They need to be cared for.
  • “Pick up the trash”. There was a lot of talk in Philadelphia too about storm drains clogged with trash. This is absolutely an issue. I am not sure it is a decisive issue in a massive storm like Ida, when all the pipes are full whether storm drains are open or not. But it would help during the 99.99% of the time we are not experiencing the remnants of a major tropical storm. Source controls and modernizing trash collection are also a big deal for getting the plastic out of the ocean and for quality of life in cities. The only losers are the rats, so let’s get this one done!
  • “Protect the subway” – I saw this done well in Singapore. Every subway entrance, and every building with an underground parking garage (which is most there), has a “crest elevation”, which is basically a little ramp you have to walk or drive up before you go back down underground. This works. It actually pushes flash flooding onto streets, which the public and politicians don’t like very much, but it is a practical way to deal with very large events. In civil engineering we call the streets the “major drainage system”, acknowledging that every once in awhile they are a good place to park water temporarily.

The one major thing not listed here is managing (avoiding where possible) flood plain development. You might think major cities don’t have much space left to develop in floodplains. But in Philadelphia, a lot of the flooding that made national news during Ida was flooding of recently built developments in floodplains. You want to leave those as park land, natural land, or agricultural land when you can. When you do allow development in the flood plain or you are dealing with historical floodplain development, you need to think about the elevations of entrances as mentioned previously.

Even with all these measures, disaster planning and response will still be needed. We are going to be doing more of this so let’s have plans in place and get good at it.

tipping points

A new article from Proceedings of the National Academy of Sciences goes through eight climate change tipping points that have studied, and tries to assign an economic impact to each. I’ll list them here in order of highest to lowest impact according to this study (see Table 2). They use the change in social cost of carbon as their key metric.

Two tipping points have major potential impacts and represent over 80% of the total risk from the eight, according to this study:

  • ocean methane hydrates
  • permafrost carbon feedback

Four tipping points have relatively modest expected impacts, at least modest compared to the truly existential threats represented by the top two:

  • West Antarctic Ice Sheet
  • Greenland Ice Sheet disintegration
  • Indian Summer Monsoon
  • Amazon dieback

Finally, two actually have small positive impacts on the (human) economy according to these authors:

  • Atlantic Meridional Overturning Circulation slowdown (AMOC)
  • Arctic sea ice / Surface Albedo Feedback

They don’t include “nonmarket effects”, so if you just feel that the death of the Amazon forest is profoundly sad, that is not reflected here. The authors are explicit about this so I guess it is okay.

These results are mismatched with my impressions, which are most likely driven by the amount of media coverage given to tipping points. I have probably read the most about ice sheets, the AMOC, and the Amazon, and these somewhat surprisingly do not make the top of the list. I feel like I have some basic grasp of the scientific concepts on each of these other than the methane hydrates. I understand why releasing massive amounts of methane would raise temperatures. I just don’t yet understand the feedback loop that would cause it to happen, whereas with the permafrost thawing it is pretty clear. Are the methane hydrates just frozen and expected to melt? I suppose in that case they are very similar to methane under the permafrost, with the difference being land and water. So the release of vast amounts of trapped methane is by far the biggest impact identified by this paper. For the most part though, the solutions to address any of these tipping points are going to be the same – drastic greenhouse gas emissions reductions and/or drastic geoengineering. Nothing else is going to reduce the amount of heat and solar energy melting ice, thawing permafrost and undersea frozen methane hydrates, and affecting ocean currents across vast chunks of the planet.