Tag Archives: water resources

An R package for modelling actual, potential and reference evapotranspiration

I and some people I know will be very excited about this. Which means I know some very weird people.

An R package for modelling actual, potential and reference evapotranspiration

Evapotranspiration (ET) is a vital component of the hydrological cycle and there are a large number of alternative models for representing ET processes. However, implementing ET models in a consistent manner is difficult due to the significant diversity in process representations, assumptions, nomenclature, terminology, units and data requirements. An R package is therefore introduced to estimate actual, potential and reference ET using 17 well-known models. Data input is flexible, and customized data checking and pre-processing methods are provided. Results are presented as summary text and plots. Comparisons of alternative ET estimates can be visualized for multiple models, and alternative input data sets. The ET estimates also can be exported for further analysis, and used as input to rainfall-runoff models.

2015 Year in Review

I’m going to try picking the most frightening, most hopeful, and most interesting post from each month. If the most interesting is also the most frightening or most hopeful, I’ll pick the next most interesting. Then I’ll have 12 nominees in each category and I’ll try to pick the most frightening, hopeful, and interesting posts of the year.

JANUARY

Most frightening: Johan Rockstrom and company have updated their 2009 planetary boundaries work. The news is not getting any better. 4 of the 9 boundaries are not in the “safe operating space”: climate change, loss of biosphere integrity, land-system change, altered biogeochemical cycles (phosphorus and nitrogen).

Most hopeful: It is starting to seem politically possible for the U.S. to strengthen regulation of risk-taking by huge financial firms.

Most interesting: Taxi medallions have been called the “best investment in America”, but now ride-sharing services may destroy them.

FEBRUARY

Most frightening: There are some depressing new books out there about all the bad things that could happen to the world, from nuclear terrorism to pandemics. Also a “financial black hole”, a “major breakdown of the Internet”, “the underpopulation bomb”, the “death of death”, and more!

Most hopeful: A new study suggests a sudden, catastrophic climate tipping point may not be too likely.

Most interesting: Government fragmentation explains at least part of suburban sprawl and urban decline in U.S. states, with Pennsylvania among the worst.

MARCH

Most frightening: The drought in California and the U.S. Southwest is the worst ever, including one that wiped out an earlier civilization in the same spot. At least it is being taken seriously and some policies are being put in place. Meanwhile Sao Paulo, Brazil is emerging as a cautionary tale of what happens when the political and professional leadership in a major urban area fail to take drought seriously. Some people are predicting that water shortages could spark serious social unrest in developing countries.

Most hopeful: If we want to design ecosystems or just do some wildlife-friendly gardening, there is plenty of information on plants, butterflies, and pollinators out there. There is also an emerging literature on spatial habitat fragmentation and how it can be purposely designed and controlled for maximum benefit.

Most interesting (I just couldn’t choose between these):

  • Innovation in synthetic drugs is quickly outpacing the ability of regulatory agencies to adapt. (I struggled whether to put this in the negative or positive column. Drugs certainly cause suffering and social problems. But that is true of legal tobacco and alcohol, and prescription drugs, as well as illegal drugs. The policy frameworks countries have used to deal with illegal drugs in the past half century or so, most conspicuously the U.S. “war” on drugs, have led to more harm than good, and it is a good thing that governments are starting to acknowledge this and consider new policies for the changing times.)
  • Germ-line engineering is much further along than anyone imagined.” This means basically editing the DNA of egg and sperm cells at will. I put this in the positive column because it can mean huge health advances. Obviously there are risks and ethical concerns too.

APRIL

Most frightening: A group of well-known economists is concerned that the entire world has entered a period of persistently low economic growth, or “secular stagnation“.

Most hopeful: Donald Shoup, author of The High Cost of Free Parking, is retiring. That might sound bad, but his ground-breaking ideas are continuing on and actually seem to be going mainstream.

Most interesting:

  • Biotechnology may soon bring us the tools to seriously monkey with photosynthesis. (This is one of those stories where I struggle between the positive and negative columns, but clearly there is a potential upside when we will have so many mouths to feed.)
  • Peter Thiel thinks we can live forever. (positive, but do see my earlier comment about mouths to feed…)

MAY

Most frightening: We’ve hit 400 ppm carbon dioxide in the atmosphere, not just some places sometimes but pretty much everywhere, all the time.

Most hopeful: The rhetoric on renewable energy is really changing as it starts to seriously challenge fossil fuels on economic grounds. Following the Fukushima disaster, when all Japan’s nuclear reactors were shut down, the gap was made up largely with liquid natural gas and with almost no disruption of consumer service. But renewables also grew explosively. Some are suggesting Saudi Arabia is supporting lower oil prices in part to stay competitive with renewables. Wind and solar capacity are growing quickly in many parts of the world.Lester Brown says the tide has turned and renewables are now unstoppable.

Most interesting: Human chemical use to combat diseases, bugs, and weeds is causing the diseases, bugs and weeds to evolve fast.

JUNE

Most frightening: One estimate says that climate change may reduce global economic growth by 3% in 2050 and 7-8% by 2100. Climate change may also double the frequency of El Nino. The DICE model is available to look at climate-economy linkages. Dennis Meadows and Jorgen Randers describe what a coming long, slow decline might look like. Rising temperatures in the Arctic are drying things out, leading to more fires, which burns more carbon, which raises temperatures, in an accelerating feedback loop.

Most hopeful: Stock values of U.S. coal companies have collapsed.

Most interesting: According to Paul Romer, academic economics has lost its way and is bogged down in “mathiness”.

JULY

Most frightening: James Hansen is warning of much faster and greater sea level rise than current mainstream expectations.

Most hopeful: Edible Forest Gardens is a great two book set that lays out an agenda for productive and low-input ecological garden design in eastern North America. You can turn your lawn into a food forest today.

Most interesting:

AUGUST

Most frightening: Steven Hawking is worried about an artificial intelligence arms race starting “within years, not decades”.

Most hopeful: It may be possible to capture atmospheric carbon and turn it into high-strength, valuable carbon fiber. This sounds like a potential game-changer to me, because if carbon fiber were cheap it could be substituted for a lot of heavy, toxic and energy-intensive materials we use now, and open up possibilities for entirely new types of structures and vehicles.

Most interesting:

  • gene drive” technology helps make sure that genetically engineered traits are passed along to offspring.
  • Technology marches on – quantum computing is in early emergence, the “internet of things” is arriving at the “peak of inflated expectations”, big data is crashing into the “trough of disillusionment”, virtual reality is beginning its assent to the “plateau of productivity”, and speech recognition is arriving on the plateau. And super-intelligent rodents may be on the way.
  • Robotics may be on the verge of a Cambrian explosion, which will almost certainly be bad for some types of jobs, but will also bring us things like cars that avoid pedestrians and computer chips powered by sweat. I for one am excited to be alive at this moment in history.

SEPTEMBER

Most frightening: Climate may be playing a role in the current refugee crisis, and the future may hold much more of this.

Most hopeful: The right mix of variety and repetition might be the key to learning.

Most interesting: Edward Tufte does not like Infographics.

OCTOBER

Most frightening: Corrupt Russian officials appear to be selling nuclear materials in Moldova.

Most hopeful: Elephants seem to have very low rates of cancer. Maybe we could learn their secrets.

Most interesting: Stephen Hawking is worried about inequality and technological unemployment.

NOVEMBER

Most frightening: I noticed that Robert Costanza in 2014 issued an update to his seminal 1997 paper on ecosystem services. He now estimates their value at $125 trillion per year, compared to a world economy of $77 trillion per year. Each year we are using up about $4-20 trillion in value more than the Earth is able to replenish. The correct conclusion here is that we can’t live without ecosystem services any time soon with our current level of knowledge and wealth, and yet we are depleting the natural capital that produces them. We were all lucky enough to inherit an enormous trust fund of natural capital at birth, and we are spending it down like the spoiled trust fund babies we are. We are living it up, and we measure our wealth based on that lifestyle, but we don’t have a bank statement so we don’t actually know when that nest egg is going to run out.

Most hopeful: There are plenty of ways to store intermittent solar and wind power so they can provide a constant, reliable electricity source.

Most interesting: Asimov’s yeast vats are finally here. This is good because it allows us to produce food without photosynthesis, but bad because it allows us to produce food without photosynthesis.

DECEMBER

Most frightening: Cyberattacks or superflares could destroy the U.S. electric grid.

Most hopeful: We had the Paris agreement. It is possible to be cynical about this agreement but it is the best agreement we have had so far.

Most interesting: I mused about whether it is really possible the U.S. could go down a fascist path. I reviewed Robert Paxton’s five stages of fascism. I am a little worried, but some knowledgeable people say not to worry. After reading Alice Goffman’s book On the Runthough, one could conclude that a certain segment of our population is living in a fascist police state right now. There is some fairly strong evidence that financial crises have tended to favor the rise of the right wing in Europe.

DISCUSSION

Well, one thing that certainly jumps out on the technology front is biotechnology. We have a couple articles about the possibility of drastic increases in the human lifespan, and what that would mean. “Germ-line engineering”, “gene drive”, and “CRISPR” are all ways of monkeying with DNA directly, even in ways that get passed along to offspring. To produce more food, we may be able to monkey with the fundamentals of photosynthesis, and if that doesn’t work we can use genetically engineered yeast to bypass photosythesis entirely.

At the risk of copyright infringement, I am reproducing the “Gartner hype cycle” below, which was mentioned in one of the posts from August.

Gartner Hype Cycle

Gartner Hype Cycle

Government and corporate labs have been making huge advances in biotechnology in the last decade or so, so it is well beyond the “innovation trigger”. It has not yet reached the “peak of inflated expectations” where it would explode onto the commercial and media scene with a lot of fanfare. I expect that will happen. We will probably see a biotech boom, a biotech bubble, and a biotech bust similar to what we saw with the computers and the internet. And then it will quietly pervade every aspect of our daily lives similar to computers and the internet, and our children will shrug and assume it has always been that way.

Obviously there are dangers. A generation of people that refuse to die on time would be one. Bioterrorism is obviously one. Then there is the more subtle matter that as we raise the limit on the size our population and consumption level can attain, the footprint of our civilization will just grow to meet the new limit. When and how we come up against these limits, and what to do about it, is the subject of the updates to two seminal papers on these issues, by Rockstrom and Costanza. We have entered an “unsafe operating space” (Rockstrom), where we are depleting much more natural capital each year than the planet can replenish (Costanza), and there will be consequences. The Paris agreement is one hopeful sign that our civilization might be able to deal with these problems, but even if we deal with the carbon emission problem, it might be too late to prevent the worst consequences, and there are going to be “layers of limits” as the authors of Limits to Growth put it all those decades ago. If we take care of the global warming problem and figure out a way to grow food for 50 billion people, eventually we will grow to 50 billion people and have to think of something else.

So without further ado:

Most frightening: I can’t pick just one. In the relatively near term, it’s the stalling out of the world economy; the convergence of climate change, drought, and the challenge of feeding so many people; and the ongoing risks from nuclear and biological weapons.

Most hopeful: I see some hope on energy and land use issues. The Paris agreement, combined with renewable energy and energy storage breakthroughs, the potential for much more efficient use of space in cities rather than letting cars take up most of the space, are all hopeful. The possibility of making carbon fiber out of carbon emissions is a particularly intriguing one. At my personal scale, I am excited to do some sustainable gardening of native species that can feed both people and wildlife. I don’t expect my tiny garden to make a major difference in the world, but if we all had sustainable gardens, they were all connected, and we weren’t wasting so much space on roads and parking, it could start adding up to a much more sustainable land use pattern.

Most interesting: I’ve already mentioned a lot of stuff, so I will just pick something I haven’t already mentioned in the discussion above: the rise of synthetic drugs. It’s just an interesting article and makes you think about what it will mean to have advanced chemical, information, and biological technologies in the hands of the little guy, actually many, many little guys. It is a brave, new, dangerous, exciting world indeed. Happy new year!

December 2015 in Review

Now it’s time to review December 2015, before we get on to reviewing 2015 as a whole.

Negative stories (-10):

  • Some car dealers are deliberately talking customers out of buying electric cars that they want, because the car dealer will make less money on oil changes. (-1)
  • Breaking news: we can’t believe everything we hear on the internet. Some of it is deliberate government and corporate propaganda, and some is “online filter bubbles” or marketing algorithms telling each of us only what we want to hear. Data used by all these algorithms is becoming more and more valuable. (-1)
  • Cyberattacks or superflares could destroy the U.S. electric grid. (-1)
  • Guns cause gut-wrenching, accidental deaths of children quite frequently in the U.S. The U.S. has a rate of violent assault 5-10 times higher than our close Anglo-American cousins, which in turn have higher rates than most of Europe and developed Asia. (-1)
  • I mused about whether it is really possible the U.S. could go down a fascist path. I reviewed Robert Paxton’s five stages of fascism. I am a little worried, but some knowledgeable people say not to worry. After reading Alice Goffman’s book On the Run though, one could conclude that a certain segment of our population is living in a fascist police state right now. There is some fairly strong evidence that financial crises have tended to favor the rise of the right wing in Europe. (-2)
  • After more than a decade of drought, there may not be enough water to sustain both Lake Powell and Lake Mead in the U.S. desert southwest. Some are suggesting draining Lake Powell. (-1)
  • This year’s “super El Nino” might have happened with or without climate change, but climate change made it more likely. I have to admit though I enjoyed sitting on my front porch in shorts on Christmas here in Philadelphia. (-1)
  • Jeffrey Sachs makes a pretty good case that the rise of violent religious fanaticism in the Middle East is largely the CIA’s fault. (-2)

Positive stories (+13):

    • Las Vegas is planning to go all renewable by 2017, mostly centralized solar. (+1)
    • Children have a natural aptitude for learning to recognize patterns. Now all we have to do is figure out which patterns we should be teaching them to recognize. (+1)
    • Some U.S. Presidential candidates want to invest in infrastructure, which is good. A national infrastructure plan might also be good. (+1)
    • Ericcson released some technology predictions for 2016 and beyond: Artificial intelligence will start to assist us without the need for smartphone screens. Virtual reality will start to come into its own for tech support, sports, dating, and shopping. And we will start to see more sensors embedded in our homes and eventually our bodies. (+1)
    • Trends in Ecology and Evolution made some technology predictions too: “managed bees as transporters of biological control agents, artificial superintelligence, electric pulse trawling, testosterone in the aquatic environment, building artificial oceanic islands, and the incorporation of ecological civilization principles into government policies in China”. (+1)
    • A serious but treatable infection can destroy a tumor. (+1)
    • Self-driving cars could drastically reduce the amount of land required for parking in cities. There are some moves toward car-free central cities around the world. (+3)
    • We had the Paris agreement. It is possible to be cynical about this agreement but it is the best agreement we have had so far. (+2)
    • New York City recently finished planting a million trees. (+2)

So we end the year on a positive note!

abandoning Lake Powell


Lake Powell is on the Colorado upstream of the Grand Canyon and Las Vegas, controlled by Glen Canyon Dam. Lake Mead is downstream of the Grand Canyon, controlled by Hoover Dam. With the decade-plus drought affecting the basin, there is actually talk of bypassing Glen Canyon Dam and just letting Lake Powell drain into Lake Mead.

One option involves filling Lake Mead first. This would allow Upper Basin water to flow past Glen Canyon Dam for storage in Lake Mead. A legal analysis published in The Water Report, issue 112, concluded that the plan doesn’t violate the Compact, because the counting point for Upper Basin water deliveries could be moved downstream, from Lees Ferry to Hoover Dam. Another option is to release water through Glen Canyon Dam’s river outlet works at 3,374-foot elevation. There’s also the option of drilling bypass tunnels — as former Reclamation Commissioner Floyd Dominy once suggested.

Upper Basin officials say that losing generation at Glen Canyon would cause a “spike” in electric power prices, raising rates by as much as 500 percent. This is highly unlikely. Glen Canyon Dam’s power may be marketed to 174 Southwestern utilities and providers, yet it contributes less than 1 percent of the total capacity of the Western power grid. There are also alternative power sources available.

If Glen Canyon Dam went offline, gas-fired power plants could instantly meet the demand at a similar cost. In fact, given Lake Powell’s recent decline, the dam has already been producing only 60 percent of its generating capacity. Yet no electricity rate “spikes” have occurred.

 

value of levees

This study seems to have had trouble finding any measurable economic value of levees, which is interesting.

The value of levee protection to commercial properties

Volume 119, November 2015, Pages 181–188

Levees have historically been a dominant approach to riverine flood control in the United States. Recent investigations have found many levees around the country are in substandard condition, however, and some communities are moving to upgrade and repair their levee systems. Little empirical work has examined how increasing flood protection from levees is valued. We present estimates of the capitalization of upgraded levee protection into commercial property prices in St. Louis County, Missouri. By using controls for surrounding land cover and coarsened exact matching to ensure close distribution between treatment and control on surrounding land cover, we attempt to isolate the price effect of the levee from agglomeration effects that may also be operating. We find that commercial properties protected by a 500-year levee do not have a statistically significant price discount as compared with properties not in a floodplain. We find the selling price of properties with levee protection to be higher (although also insignificant in many specifications) than those in a floodplain without levee protection.

July 2015 in Review

I’m experimenting with my +3/-3 rating system again this month, just to convey the idea that not all stories are equal in importance. The result is that July was a pretty negative month! Whether that reflects more the state of the world or the state of my mind, or some combination, you can decide.

Negative stories (-21):

  • In The Dead Hand, I learned that the risk of nuclear annihilation in the 1980s was greater than I thought, and the true story of Soviet biological weapons production was much worse than I thought. (-3)
  • Elon Musk and Stephen Hawking, among others, are concerned about a real-life Terminator scenario. (-2)
  • I playfully pointed out that the Pope’s encyclical contains some themes that sound like the more lucid paragraphs in the Unabomber Manifesto, namely that the amoral pursuit of technology has improved our level of material comfort and physical health while devastating the natural world, creating new risks, and leaving us feeling empty somehow. (-1)
  • Bumblebees are getting squeezed by climate change. (-1)
  • The Cold War seems to be rearing its ugly head. (-2)
  • There may be a “global renaissance of coal”. (-3)
  • Joel Kotkin and other anti-urban voices like him want to make sure you don’t have the choice of living in a walkable community. (-2)
  • I think Obama may be remembered as an effective, conservative president, in the dictionary sense of playing it safe and avoiding major mistakes. Navigating the financial crisis, achieving some financial and health care reforms, and defusing several wars and conflicts are probably his greatest achievements. However, if a major war or financial crisis erupts in the near future that can be traced back to decisions he made, his legacy will suffer whether it is fair or not. (-0)
  • We can think of natural capital as a battery that took a long time to charge and has now been discharged almost instantly. (-3)
  • James Hansen is warning of much faster and greater sea level rise than current mainstream expectations. (-3)
  • Lloyd’s of London has spun a scenario of how a food crisis could play out. (-1)

Positive stories (+7):

condensation

Here’s an article on using condensation as a water supply. It’s a somewhat obvious idea – first, collect all that air conditioner condensate and use it for something. Second, use solar energy to condense some more.

The machine is based on Spanish technology. Local developers John Vollmer and Moses West are testing it out and allowing it to be evaluated by numerous entities, including the military.

The machine takes water from the air in the form of humidity and converts it into drinking water. It’s not a new process, but the machine does it on a large scale and much more economically than before.

“As long as you have 30 percent humidity or greater, there’s no such thing as a drought,” West said.

Asian water sensitive urban design

Here are a couple examples of water-sensitive urban design. First, Bangkok is not doing it right. The city is sinking a shocking 3 to 4 inches per year. The article conflates urban flash flooding with river and coastal flooding, but either way getting lower can’t be good.

Meanwhile, China supposedly is doing it right, building “sponge cities” with political and financial support from the central government. I’m a little skeptical of the public relations campaign after my time in Asia. Still, political and financial support for urban water management are in short supply here in the United States, so I can’t exactly take the moral high ground.

 

Los Angeles Stormwater Capture Plan

Los Angeles has a new stormwater capture plan out. They seem to focus mostly on the idea of using urban stormwater to recharge aquifers at the watershed to neighborhood scale.

The long term (by 2099) potential average annual capture volume was calculated for a conservative and aggressive scenario. Each was broken down by aquifer and between distributed capture and centralized capture. The fraction of the incoming flow to the City through direct precipitation, applied irrigation and run-on (831,400 acre-feet) that is currently captured in the existing baseline scenario is 11% (92,400 acre-feet). The fraction of the incoming flow to the City that could be captured ranges between 24% (197,300 acre-feet) and 33% (285,900), where the low value represents a conservative scenario and the higher value an aggressive scenario. This represents a captured volume of approximately double and triple the existing volume in the conservative and aggressive scenarios, respectively. As in the existing condition, most of the distributed recharge, and most of the increase in recharge, will take place in the San Fernando Valley and the Los Angeles Forebay area under all scenarios, reflecting well suited infiltration characteristics and the prioritization of Class 1 and Class 2 aquifers. It is important to note that the potential capture over the long term (to 2099) does not reflect the stated goals of the SCMP which will provide an implementation strategy for capture potential over the next 20 years.

This doesn’t really explore the idea of capturing and reusing more water at the site scale. If we really tried to close loops better at that scale, using a whole suite of water conservation, stormwater capture, and graywater tools, I feel like it could go a long way. You install waterless plumbing fixtures first (waterless urinals, composting toilets, urine-separating toilets), where practical, then the lowest-flow fixtures next (low flow showerheads and clotheswashers, dual-flush toilets). Then you capture stormwater in cisterns and rain barrels. Next is graywater – capturing and reusing water from clothes washers and showers. None of this is rocket science – it’s just plumbing, but the potential for creative and user-friendly designs just hasn’t been fully explored yet. People may think that the current generation of composting toilets and rain barrels is not worth the trouble even if they lower our water bills a little bit, so we need to design products that people want, like any other industry that competes for peoples’ attention and dollars.

 

The End Of Plenty: The Race To Feed A Crowded World

Here’s a new entry in the running-out-of-food genre.

I’ve embedded a Fresh Air interview about this book at the bottom of the post. You can find a transcript here. And here’s an excerpt:

And so suddenly, you had an instance where the world began consuming fairly consistently more of these major grains than it was producing, whittling down stockpiles to levels we haven’t seen since the 1970s. So, for example, in the 1970s, we consumed or utilized more grain than we ate only about four years out of the decade. In the drier ’80s, it was about five years. Since 2000, we’ve consumed or utilized more of these feed grains in eight of the first 12 years of the decade. So really, we’re starting to see the demand pressures outstrip our ability to produce food. All this while our yield gains, that have been spectacular since Norman Borlaug introduced the Green Revolution agriculture in the ’50s and ’60s, started to plateau.

So it – just as our demands are starting to rise, we’re starting to plateau in the amount of grain we’re getting per hectare, while things like climate change are really starting to hammer us. So we’re looking at, you know, these major disruptions of our food supply. Now, there was a heat wave in Europe in 2003 that killed, like, 73,000 people in Europe. And yet what – that one made headlines all over the world, but what people didn’t realize was that a third of the wheat and grain and fruit crops were decimated that year.

You know, Russia has had these enormous droughts events where they’ve lost up to a third to half of their crop. Here in the United States, we’ve had 2012-2013, you know, we had the worst drought since the Dust Bowl days – cost us $30 billion. So – and what we’re dealing with is sort of the new normal. You know, the researchers say that now we’re going to have to, because of the increased demand from population growth, increased meat consumption in developing parts of the world, that we’re going to have to double our grain production, our food production, by 2050 to make sure everyone’s reasonably fed. And yet, climate change is just starting to really hammer it down, so we’re in a bit of a pinch.