Tag Archives: drought

drought

Alarm bells are beginning to sound on drought risk in western North America and around the world, including some important and populous food growing regions.

Here’s an article in Science talking about “an emerging North American megadrought”:

Severe and persistent 21st-century drought in southwestern North America (SWNA) motivates comparisons to medieval megadroughts and questions about the role of anthropogenic climate change. We use hydrological modeling and new 1200-year tree-ring reconstructions of summer soil moisture to demonstrate that the 2000–2018 SWNA drought was the second driest 19-year period since 800 CE, exceeded only by a late-1500s megadrought. The megadrought-like trajectory of 2000–2018 soil moisture was driven by natural variability superimposed on drying due to anthropogenic warming. Anthropogenic trends in temperature, relative humidity, and precipitation estimated from 31 climate models account for 47% (model interquartiles of 35 to 105%) of the 2000–2018 drought severity, pushing an otherwise moderate drought onto a trajectory comparable to the worst SWNA megadroughts since 800 CE.

Science

Here’s an article in Earth’s Future (from the American Geophysical Union, which I consider prestigious) talking about some other regions with high drought risk.

The multi‐model ensemble shows robust drying in the mean state across many regions and metrics by the end of the 21st century, even following the more aggressive mitigation pathways (SSP1‐2.6 and SSP2‐4.5). Regional hotspots with strong drying include western North America, Central America, Europe and the Mediterranean, the Amazon, southern Africa, China, Southeast Asia, and Australia. Compared to SSP3‐7.0 and SSP5‐8.5, however, the severity of drying in the lower warming scenarios is substantially reduced and further precipitation declines in many regions are avoided. Along with drying in the mean state, the risk of the historically most extreme drought events also increases with warming, by 200–300% in some regions.

AGU

So, our species has identified the problem and identified solutions, but is continuing to fail to actually do anything. This is a little like the coronavirus, where early action could have been cheap and effective compared to the drastic action required when the problem became really obvious to even the densest politicians. It’s unlike the coronavirus in that once the problem becomes obvious to even the densest politicians, there may be no effective measures that can be taken, even maximally disruptive ones.

The mention of the Amazon and Southeast Asia are particularly concerning to me. These are both important food growing regions and biodiversity hot spots.

2019 in Review

Most frightening and/or depressing stories:

  • JANUARY: Writing in 1984, Isaac Asimov thought we would be approaching world peace, living lives of leisure, children would love school, and we would be mining the moon and manufacturing things in orbital factories by now.
  • FEBRUARY: Cyber-attacking may be a lot easier than cyber-defending. Also, nuclear proliferation is back partly thanks to diplomatic unforced errors by the United States.
  • MARCH: Invoking of emergency powers was the first step down the slippery slope for the democratic Weimar Republic. New research suggests that climate change can be the trigger that pushes a society over the edge.
  • APRIL: 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.
  • MAY: Without improvements in battery design, the demand for materials needed to make the batteries might negate the environmental benefits of the batteries. I’m not really all that frightened or depressed about this because I assume designs will improve. Like I said, it was slim pickings this month.
  • JUNE: The world economy appears to be slowing, even though U.S. GDP is growing as the result of the post-2007 recovery finally taking hold, juiced by a heavy dose of pro-cyclical government spending. The worry is that if and when there is eventually a shock to the system, there will be little room for either fiscal or monetary policy to respond. Personally, the partisan in me is thinking any time before November 2020 is as good a time for any for a recession to hit the U.S. I am a couple decades from retirement, and picturing that bumper sticker “Lord, Just Give Me One More Bubble”. Of course, this is selfish thinking when there are many people close to retirement and many families struggling to get by out there. And short-term GDP growth is not the only metric. The U.S. is falling behind its developed peers on a wide range of metrics that matter to people lives, including infrastructure, health care costs and outcomes, life expectancy, maternal and infant mortality, addiction, suicide, poverty, and hunger. And it’s not just that we are no longer in the lead on these metrics, we are below average and falling. Which is why I am leading the charge to Make America Average Again!
  • JULY: The water situation in India, and the major city of Chennai in particular, sounds really bad.
  • AUGUST: Drought is a significant factor causing migration from Central America to the United States. Drought in the Mekong basin may put the food supply for a billion people in tropical Asia at risk. One thing that can cause drought is deliberately lying to the public for 50 years while materially changing the atmosphere in a way that enriches a wealthy few at everyone else’s expense. Burning what is left of the Amazon can’t help. 
  • SEPTEMBER: Being a TSA air marshal may be the worst job ever.
  • OCTOBER: A third of all of North America’s birds may have disappeared since the 1970s. (Truth be told, it was hard to pick a single most depressing story line in a month when I covered propaganda, pandemic, new class divisions created by genetic engineering, and nuclear war. But while those are scary risks for the near future, it appears the world is right in the middle of an ongoing and obvious ecological collapse, and not talking much about it.)
  • NOVEMBER: The Darling, a major river system in Australia, has essentially dried up.
  • DECEMBER: Pilots occasionally go crazy and crash planes on purpose.

Most hopeful stories:

  • JANUARY: The dream of fusion power is not dead. There is even some hope of new advancements in fission power.
  • FEBRUARY: Here is the boringly simple western European formula for social and economic success: “public health care, nearly free university education, stronger progressive taxation, higher minimum wages, and inclusion of trade unions in corporate decision-making.” There’s even a glimmer of hope that U.S. politicians could manage to put some of these ideas into action. Seriously, I’m trying hard not to be cynical.
  • MARCH: The Green New Deal, if fleshed out into a serious plan, has potential to slow or reverse the decline of the United States.
  • APRIL: There is forward progress on a male birth control pill.
  • MAY: Planting native plants in your garden really can make a difference for biodiversity.
  • JUNE: There have been a number of serious proposals and plans for disarmament and world peace in the past, even since World War II. We have just forgotten about them or never heard of them.
  • JULY: Deliberate practice is how you get better at something.
  • AUGUST: I explored an idea for automatic fiscal stabilizers as part of a bold infrastructure investment plan. I’m not all that hopeful but a person can dream.
  • SEPTEMBER: I think Elizabeth Warren has a shot at becoming the U.S. President, and of the candidates she and Bernie Sanders understand the climate change problem best. This could be a plus for the world. I suggested an emergency plan for the U.S. to deal with climate change: Focus on disaster preparedness and disaster response capabilities, the long term reliability and stability of the food system, and tackle our systemic corruption problems. I forgot to mention coming up with a plan to save our coastal cities, or possibly save most of them while abandoning portions of some of them in a gradual, orderly fashion. By the way, we should reduce carbon emissions and move to clean energy, but these are more doing our part to try to make sure the planet is habitable a century from now, while the other measures I am suggesting are true emergency measures that have to start now if we are going to get through the next few decades.
  • OCTOBER: I’ll go with hard shell tacos. They are one of the good things in this life, whether they are authentic Mexican food or “trailer park cuisine” as I tagged the story! 
  • NOVEMBER: There is progress on carbon capture technology. Also, just restoring soil on previously degraded farm and grazing land could provide large benefits worldwide. There may also be real progress on fusion power.
  • DECEMBER: Deep inside me is a little boy who still likes bugs, and I spotted some cool bugs in my 2019 garden, including endangered Monarch butterflies. So at least I made that small difference for biodiversity in a small urban garden, and others can do the same.

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

  • JANUARY: Some in the U.S. Senate and military take UFOs seriously.
  • FEBRUARY: We could theoretically create a race of humans with Einstein-level intelligence using in-vitro fertilization techniques available today. They might use their intelligence to create even smarter artificial intelligence which would quickly render them (not to mention, any ordinary average intelligence humans) obsolete.
  • MARCH: 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.
  • APRIL: 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“.
  • MAY: Joseph Stiglitz suggested an idea for a “free college” program where college is funded by a progressive tax on post-graduation earnings.
  • JUNE: In technology news, Elon Musk is planning to launch thousands of satellites. And I learned a new acronym, DARQ: “distributed ledger technology (DLT), artificial intelligence (AI), extended reality (XR) and quantum computing”. And in urban planning news, I am sick and tired of the Dutch just doing everything right.
  • JULY: I laid out the platform for my non-existent Presidential campaign.
  • AUGUST: Liquid hydrogen could theoretically be used as a jet fuel.
  • SEPTEMBER: I mentioned an article by a Marine special operator (I didn’t even know those existed) on how to fix a broken organizational culture: acknowledge the problem, employ trusted agents, rein in cultural power brokers, win the population.
  • OCTOBER: A list of “jobs of the future” includes algorithms, automation, and AI; customer experience; environmental; fitness and wellness; health care; legal and financial services; transportation; and work culture. I’ll oversimplify this list as computer scientist, engineer, doctor, lawyer, banker, which don’t sound all that different than the jobs of the past. But it occurs to me that these are jobs where the actual tools people are using and day-to-day work tasks evolve with the times, even if the intended outcomes are basically the same. What might be new is that even in these jobs, you need to make an effort to keep learning every day throughout your career and life if you want to keep up.
  • NOVEMBER: Google claims to have achieved “quantum supremacy“. This may allow us all to live lives of Fully Automated Luxury Communism.
  • DECEMBER: Estonia is supposedly the most digitally advanced country in the world. Finland has posted a free AI literacy course.

I want to give the reader some brilliant synthesis of all that, but you could probably go back to my past year in review posts and find that I am saying pretty much the same things each year. Well, here goes.

There is a list of serious risks that are being acknowledged but not effectively addressed. These include climate change, nuclear war, drought, rainforest loss, loss of freedom and human rights, economic recession, cyberwarfare, and automation leading to job loss. Climate change, drought, and rainforest loss are clearly intertwined. Solutions are largely known and just not being implemented due to dysfunctional politics at the national level and lack of international cooperation. These trends seem to be going in the wrong direction at the moment unfortunately.

Other than rainforest loss, the ongoing catastrophic loss of biodiversity, biomass and ecosystem function is mostly not even being acknowledged, let alone addressed. Biodiversity is a somewhat esoteric concept to most people, but hearing about mammals and birds and even insects just vanishing on a mass scale really starts to get to me emotionally. I don’t hear others in my social circles talking about these issues much, so I wonder if they just haven’t heard the same facts and figures I have or if they just don’t have the same response. Politicians are certainly not talking about these issues.

The risk of catastrophic war is very real. The world is in a very cynical place right now, but we have made progress on this before and we can do it again.

Recession and automation have an interesting relationship, where recession is a short- to medium-term reversal of economic growth, and automation, at least in theory, should lead to a longer-term acceleration of it. Of course, even if the acceleration happens it will benefit the majority of workers only if the wealth is shared. I’ll just repeat what I said above: “Here is the boringly simple western European formula for social and economic success: “public health care, nearly free university education, stronger progressive taxation, higher minimum wages, and inclusion of trade unions in corporate decision-making.” Or just copy the Dutch because they seem to know what they’re doing, the smug bastards.

You could accuse my blog of being US-centric, and I would accept that criticism. I am living in the US after all. I’ve lived and worked abroad though, and came to appreciate the strengths of my country more when I spent some time away from it. The US is still a good country to live in as a middle class professional person, but we are cruising along on the momentum of our past extraordinary success. We have lost momentum and begun to slip not only out of the leadership position among our developed country peers, but below the middle of the pack. The hard evidence on this is clear. We have politicians that just tell us that we are “great again”, because that is what we want to hear, without taking any necessary steps that would at least help us to keep up. 2020 is an election year and we have a chance to make some changes. We need to deal first and foremost with our systemic corruption problem which causes our government to respond to wealthy and powerful interests rather than citizens. We need real, inspiring, once-in-a-generation leadership to make this happen. I have decided to support Bernie Sanders for this reason, even though I don’t agree with every one of his stated policy positions.

There are some interesting and even astonishing technologies in the list above, from fusion power to micro-satellites to quantum computing to genetic engineering. It is 2020 after all.

And finally, when I’m not thinking and worrying about the world at large, I’ll be tending to my garden and my family and eating my hard shell tacos, and reminding myself that life here in the United States on the planet Earth is actually pretty good.

November 2019 in Review

Most frightening and/or depressing story:
  • The Darling, a major river system in Australia, has essentially dried up.
Most hopeful story: Most interesting story, that was not particularly frightening or hopeful, or perhaps was a mixture of both:

goodbye my darling

The Darling, a major river in New South Wales, Australia (where Sydney, Canberra, and Melbourne are) has all but dried up. It’s not addressed in this article, but I recall that Australia’s political system has managed to anticipate and adapt to climate change reasonably well when it comes to drinking water for its major coastal cities. But one thing this article notes is that the country has gone from a net exporter to a net importer of wheat. It is also indigenous populations in the more rural areas who tend to bear the brunt.

August 2019 in Review

My work-life balance situation continues to not favor a lot of blog posts. Or is it work-life-family balance? Or is family part of life? Yes, I guess so. Anyway, what there is not a lot of time for is personal leisure activities like reading, writing, and thinking. Not that I don’t enjoy reading Green Eggs and Ham for the 50th time. I do. Anyway, here are a few highlights of the slim pickings that constituted this blog in August 2019. Most frightening and/or depressing story:
  • Drought is a significant factor causing migration from Central America to the United States. Drought in the Mekong basin may put the food supply for a billion people in tropical Asia at risk. One thing that can cause drought is deliberately lying to the public for 50 years while materially changing the atmosphere in a way that enriches a wealthy few at everyone else’s expense. Burning what is left of the Amazon can’t help. 
Most hopeful story:
  • I explored an idea for automatic fiscal stabilizers as part of a bold infrastructure investment plan. I’m not all that hopeful but a person can dream.
Most interesting story, that was not particularly frightening or hopeful, or perhaps was a mixture of both:

the Mekong

Similar to the situation in India, the Mekong depends on a mix of snow/glacial melt from the Himalayas, and on seasonal monsoon rains. Both are becoming less reliable, and countries in the headwaters, including China and Laos, are going on massive dam-building binges. (Disclaimer: This website looks like a reputable source of journalism, but I am not familiar with it.)

The crisis began when critical monsoon rains, which usually start in late May in the Mekong region, failed to arrive. Dry conditions, driven by the El Niño weather phenomenon and exacerbated by climate change, persisted well into July. At that time, observers say, the situation was made worse by hydropower dam operators upstream, in China and Laos,withholding water for their own purposes...

Originating in the Tibetan highlands, the Mekong River flows through six Asian countries, including China, Myanmar, Thailand, Laos, Cambodia, and Vietnam, before emptying into the South China Sea. The river basin is home to the largest inland fishery in the world and more than 60 million people depend on it for their livelihoods.

the role of drought in migration from Central America

The Guardian has an article on the role that drought and climate change play in migration of people from Central American countries such as Guatemala to the U.S.

Central America remains one of the world’s most dangerous regions outside a warzone, where a toxic mix of violence, poverty and corruption has forced millions to flee their homes and head north in search of security.

But amid a deepening global climate crisis, drought, famine and the battle for dwindling natural resources are increasingly being recognized as major factors in the exodus.

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.

2018 in Review

Most frightening and/or depressing stories:

  • JANUARY: Cape Town, South Africa looked to be in imminent danger of running out of water. They got lucky, but the question is whether this was a case of serious mismanagement or an early warning sign of water supply risk due to climate change. Probably a case of serious mismanagement of the water supply while ignoring the added risk due to climate change. Longer term, there are serious concerns about snowpack-dependent water supplies serving large urban populations in Asia and western North America.
  • FEBRUARY: Cape Town will probably not be the last major city to run out of water. The other cities at risk mentioned in this article include Sao Paulo, Bangalore, Beijing, Cairo, Jakarta, Moscow, Istanbul, Mexico City, London, Tokyo, and Miami.
  • MARCH: One reason propaganda works is that even knowledgeable people are more likely to believe a statement the more often it is repeated.
  • APRIL: That big California earthquake is still coming.
  • MAY: The idea of a soft landing where absolute dematerialization of the economy reduces our ecological footprint and sidesteps the consequences of climate change through innovation without serious pain may be wishful thinking.
  • JUNE: The Trump administration is proposing to subsidize coal-burning power plants. Meanwhile the long-term economic damage expected from climate change appears to be substantial. For one thing, Hurricanes are slowing down, which  means they can do more damage in any one place. The rate of melting in Antarctic ice sheets is accelerating.
  • JULY: The UN is warning as many as 10 million people in Yemen could face starvation by the end of 2018 due to the military action by Saudi Arabia and the U.S. The U.S. military is involved in combat in at least 8 African countries. And Trump apparently wants to invade Venezuela.
  • AUGUST: Noam Chomsky doesn’t love Trump, but points out that climate change and/or nuclear weapons are still existential threats and that more mainstream leaders and media outlets have failed just as miserably to address them as Trump has. In related news, the climate may be headed for a catastrophic tipping point and while attention is mostly elsewhere, a fundamentalist takeover of Pakistan’s nuclear arsenal is still one of the more serious risks out there.
  • SEPTEMBER: A huge earthquake in the Pacific Northwest could be by far the worst natural disaster ever seen.
  • OCTOBER: The Trump administration has slashed funding to help the U.S. prepare for the next pandemic.
  • NOVEMBER: About half a million people have been killed in Iraq, Afghanistan, and Pakistan since the U.S. invasions starting in 2001. This includes only people killed directly by violence, not disease, hunger, thirst, etc.
  • DECEMBER: Climate change is just bad, and the experts seem to keep revising their estimates from bad to worse. The Fourth National Climate Assessment produced by the U.S. government is not an uplifting publication. In addition to the impacts of droughts, storms, and fires, it casts some doubt on the long-term security of the food supply. An article in Nature was also not uplifting, arguing that climate change is happening faster than expected due to a combination of manmade and natural trends.

Climate change, nuclear weapons, and pandemics. If I go back and look at last year’s post, this list of existential threats is going to be pretty much the same. Add to this the depressing grind of permanent war which magnifies these risks and diverts resources that could be used to deal with them. True, we could say that we got through 2018 without a nuclear detonation, pandemic, or ecological collapse, and under the circumstances we should sit back, count our blessings, and wait for better leadership. And while our leadership is particularly inept at the moment, I think Noam Chomsky has a point that political administration after political administration has failed to solve these problems and this seems unlikely to improve. The earthquake risk is particularly troublesome. Think about the shock we felt over the inept response to Katrina, and now think about how essentially the same thing happened in Puerto Rico, we are not really dealing with it in an acceptable way, and the public and news media have essentially just shrugged it off and moved on. If the hurricanes, floods, fires and droughts just keep hitting harder and more often, and we don’t fully respond to one before the next hits, it could mean a slow downward spiral. And if that means we gradually lose our ability to bounce back fully from small and medium size disasters, a truly huge disaster like an epic earthquake on the west coast might be the one that pushes our society to a breaking point.

Most hopeful stories:

I believe our children are our future…ya ya blahda blahda. It’s a huge cliche, and yet to be hopeful about our world I have to have some hope that future generations can be better system thinkers and problem solvers and ethical actors than recent generations have been. Because despite identifying problems and even potential solutions we are consistently failing to make choices as a society that could divert us from the current failure path. And so I highlighted a few stories above about ideas for better preparing future generations, ranging from traditional school subjects like reading and music, to more innovative ones like meditation and general system theory, and just maybe we should be open to the idea that the right amount of the right drugs can help.

Fossil fuels just might be on their way out, as alternatives start to become economical and public outrage slowly, almost imperceptibly continues to build.

There is real progress in the fight against disease, which alleviates enormous quantities of human suffering. I mention AIDS, diabetes, and Alzheimer’s disease above. We can be happy about that, of course. There are ideas about how to grow more food, which is going to be necessary to avoid enormous quantities of human suffering. Lest anyone think otherwise, my position is that we desperately need to reduce our ecological footprint, but human life is precious and nobody deserves to suffer illness or hunger.

Good street design that lets people get around using mostly their own muscle power. It might not be sexy, but it is one of the keys to physical and mental health, clean air and water, biodiversity, social and economic vibrancy in our cities. Come to think of it, I take that back, it can be sexy if done well.

Good street design and general systems theory – proof that solutions exist and we just don’t recognize or make use of them. Here’s where I want to insert a positive sentence about how 2019 is the year this all changes for the better. Well, sorry, you’ll have to find someone less cynical than me, and/or with much better powers of communication and persuasion than me to get the ball rolling. On the off chance I have persuaded you, and you have communication and/or persuasion super powers, let me know.

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

Whatever else happens, technology and accumulation of human knowledge in general march on, of course. Computer, robotics, and surveillence technology march on. The human move into space is much slower and painful than many would have predicted half a century ago, and yet it is proceeding.

I’ll never drop the waterless sanitation thing, no matter how much others make fun of me. It’s going to happen, eventually. I don’t know whether we will colonize Mars or stop defecating in our water supply first, but both will happen.

The gene drive thing is really wild the more I think about it. This means we now have the ability to identify a species or group of species we don’t want to exist, then cause it not to exist in relatively short order. This seems like it could be terrifying in the wrong hands, doesn’t it? I’m not even sure I buy into the idea that rats and mosquitoes have no positive ecological functions at all. Aren’t there bats and birds that rely on mosquitoes as a food source? Okay, I’m really not sure what redeeming features rats have, although I did read a few years ago that in a serious food crunch farming rats would be a much more efficient way of turning very marginal materials into edible protein than chicken.

The universe in a bottle thing is mind blowing if you spend too much time thinking about it. It could just be bottles all the way down. It’s best not to spend too much time thinking about it.

That’s it, Happy 2019!

climate change threatens barley yields

A new study says climate change is likely to threaten barley yields, leading to high beer prices later in the century. I’m hoping this is wrong and we can grow hops and barley in the formerly frozen tundra of Canada and Siberia. Of course the bigger picture is about grain yields overall, and that is not just about average temperature but about extreme heat and drought.

Decreases in global beer supply due to extreme drought and heat

Beer is the most popular alcoholic beverage in the world by volume consumed, and yields of its main ingredient, barley, decline sharply in periods of extreme drought and heat. Although the frequency and severity of drought and heat extremes increase substantially in range of future climate scenarios by five Earth System Models, the vulnerability of beer supply to such extremes has never been assessed. We couple a process-based crop model (decision support system for agrotechnology transfer) and a global economic model (Global Trade Analysis Project model) to evaluate the effects of concurrent drought and heat extremes projected under a range of future climate scenarios. We find that these extreme events may cause substantial decreases in barley yields worldwide. Average yield losses range from 3% to 17% depending on the severity of the conditions. Decreases in the global supply of barley lead to proportionally larger decreases in barley used to make beer and ultimately result in dramatic regional decreases in beer consumption (for example, −32% in Argentina) and increases in beer prices (for example, +193% in Ireland). Although not the most concerning impact of future climate change, climate-related weather extremes may threaten the availability and economic accessibility of beer.