# Which Country has the Worst Air Pollution in the World?

Before I get into anything, this is a first in a series of three articles I am going to be releasing. Instead of my monthly release rate, I am going to be releasing them one each week. If you are traveling to or live in a polluted environment, I highly suggest you subscribe to the blog or do it as an RSS feed.

Now to the article!

If you guessed China, you guessed wrong. Did you get it wrong? If you say you didn't, I am going to call you a liar. Every person I know, when asked which country in the world has the worst air pollution, answered China. This includes experts on China, experts on air pollution, and experts on countries that are more polluted than china.

Also, the number of people that die per year from air pollution is staggering, more on that after the math.

China isn't even close to being the country with the most fouled air. That distinction belongs to India, by a huge margin.

Okay, well, let's delve further into it. Of the top 20 most polluted cities in the world, how many would you guess are in China? Okay, that was a trick question. China doesn't have any of the top 20 most polluted cities in the world. And India holds the distinction of having at least 10 of them.

A gate in India that can't be seen through air pollution.

Before getting to the science grit, one more important thing. Owing entirely to city air pollution in India, at least one study shows that Indian citizens living in cities have 30% less lung capacity than Europeans living in cities. So, pretty much, pollution makes it so

Okay, let's back up and discuss air pollution a bit.

What is Air Pollution? (This is the technical part of the post)

In this above mentioned study, air pollution is strictly PM2.5. Why is that? Because PM2.5 is particulates smaller than 2.5 microns, roughly 1/30th the width of human hair. They are small enough that they penetrate deep into the lungs, where they cause permanent damage and can lead to cancer. PM2.5 is produced by powerplants (mostly coal-fired) and any combustion-based motor vehicle. The EPA has a great guideline for PM2.5 if you want to read more.

There are other pollutants that everyone seems to ignore. Back in the day, you heard a lot about acid rain. Acid rain is caused by $SO_2$ and $NO_2$ . Combusting anything creates NO, cause there is so much $N_2$ in the air (78% of the stuff we breath is $N_2$ ) that some of it combines with oxygen during combustion, creating NO. NO reacts with $O_2$ to produce NO2 and O-, the latter of which produces ground-level ozone (more on that soon). Let's look at what happens to $SO_2$ and $NO_2$ in air:

$2SO_2 + 2H_2O + O_2 \rightarrow 2H_2SO_4$

So that's sulphuric acid.

$2NO_2 + H_2O \rightarrow HNO_2 + HNO_3$

And that is nitrous and nitric acid. Another fun reaction is:

$NO + VOC + sunlight \rightarrow O_3$

VOCs are Volatile Organic Carbons. It pretty much means organic matter in the air. It comes from plants. $O_3$ , or ozone, is bad for people and plants at ground level.

So let's review what happens here. Power plants burn fossil fuels, they produce PM2.5 which causes cancer, coal-fired powerplants produce $SO_2$ which becomes acid in your lungs, and all combustion plants produce $NO_2$ which also becomes acid in your lungs. PM2.5 is the worst, but the other pollutants are also bad. Burning coal causes the most of all of these pollutants. Lower grade coal, the stuff burned more often in China and India (the US has high grade coal), has less energy relative to pollutants, so it makes more pollution.

Now, exactly how bad are ozone, NOx ( $NO_2$ ) and SOx ( $SO_2$ )? They are all similar, so lets just look at SOx health effects according to the EPA. In short, exercising in an environment with this stuff is bad for you, and sends people to the emergency room. In the worst case scenario, it exacerbates or triggers asthma, heart attacks, and aneurysms, killing people nearly instantly. Long term exposure increases asthma and other health hazards. Now keep in mind that this stuff is considered less of a problem than PM2.5.

Back to the Qualitative

Okay, now that we know what the stuff is and what it does, let's get to some specific numbers. The World Health Organization indicates that air pollution is "single biggest environmental health risk in the world" the largest health hazard in the world, killing 7 million people per year.

What's the best way to deal with this stuff? Staying indoors helps a lot. Your house acts as a good barrier against it. Having a filter also helps. If you live in China or India, build one of these at your home. The filter will stop working eventually, so it will have replacement costs, but you can probably get clean air for around $100 per year for a single room in your house. Now keep in mind, this is a HEPA filter, which filters out only particles. Good luck with that SOx, NOx, and ozone. The guy who stapled together the filter and the fan states that it's the only thing you need for clean air in his blog. Clearly the PhD he is learning in psychology does not qualify him to know a lot about air quality. It doesn't disqualify him from knowing about it, but being completely unaware of the chemicals I described above does. HEPA + fan. Good for PM2.5, useless vs. ozone, SOx, and NOx. In other words, this filter will work inside, but you are still going to get bad chemicals living in your lungs. If you want to filter more, be prepared to shell out thousands of USD. Also, if you plan on going outside, or you want to exercise, if you work outside, you're pretty well screwed. There are a few masks that work, but all have their flaws or are expensive. More on this later, we've hit 1000 words and it's time to go. Before we let me repeat one thing. If you are in a polluted area: Do. Not. Exercise. Anywhere. That. Isn't. Filtered. And no mask on the market filters out SOx, NOx, and Ozone. Thanks for reading! - Jason Munster # Solar Roadways: Full of Crap and Bad at Math First of all, sorry it has been over a month since I've posted. I've decided to get together a few people to start addressing some of the things I write about, and that has taken my time up til now. I'll be posting once per month from here on out, on the first Sunday of every month. Today's post is a long one, but one of the most interesting I've written by far. This is the one time where I will say the following: if you are short of time, skip directly to the math section. It shows a serious glaring deficiency of either forethought or disclosure on the part of the founders of Solar Roadways. Moreover, it shows they can't do basic math. Never trust an engineer who can't do basic math. It's a very crackpot idea. Here We Go! I've heard a lot of talk about Solar Roadways recently. I'm going to use it as an example of how to analyze some "science." After you follow the very basic math below, you will see that the team at Solar Roadways does not know what numbers to run*. A much larger problem: they suggest that solar roads can replace fossil fuel power, while simultaneously and surreptitiously admitting that they need a ton of grid power to make this work. So pretty much they are either dumb or straight up liars. First, let's talk about why these roads might be good, from their point of view. Being a by-the-numbers type of guy, the first thing I did was check the "numbers" section of their website. While their assumptions are dubious at best (more on that later) They say that their roads could provide 3x the energy that the US needs, in kilowatt hours (kWh is a useless measurement here, cause it will be intermittent power. In other words, it produces no energy at night, and will need to be supplemented by fossil fuel power. More on that later). Also, the roads look a lot cooler, with light-up sections, and ability to melt snow so that road maintenance is reduced. So the thing is wired to the grid so that if it snows, it can use heating elements to melt the snow instead of plowing it. But doesn't snow take a lot of energy to melt? Would it take less energy just to push it with a plow? Time for the math! Math of Melting vs Pushing Snow Plow trucks to be replaced by Solar Roads? Not happening. Okay. Let's assume middle-case scenario of 8 inches of snowfall, being removed with one sweep by plow trucks, and that this is between powder and heavy snow in consistency, which means 1" of water equivalent. A DOT snowplow clears 10' width of snow, or 120 inches. In one foot of movement forward and plowing 8" of snow it moves the water-weight of 1"x120"x12" or $1 \cdot 120 \cdot 12 = 1440 in^3$ Now we have to figure out how much energy cost this took in fuel, so we will later relate this to the mileage efficiency of a DOT truck. First, let's figure out how much energy it takes to melt this much snow into water. Do do this we need the latent heat of fusion, or the energy it takes to transition from ice to snow. It's 334 Joules/gram. How do we convert from cubic inches of water to grams? Easy. Because the metric system makes sense, one $cm^3$ of water = 1 gram. There are 2.54 cm per inch, so: $1440 in^3 * (2.54 cm/in)^3 = 23600g$ Okay, we have grams, now let's calculate the energy to melt as much snow as a plow moves from driving 1': $23600 g \cdot 334 \frac{J}{g} = 7,880,000 J$ Or ~7.8MJ. Per foot. Or, for a mile: $7.8 \frac{MJ}{ft} \cdot 5280 \frac{ft}{mile} = 41184MJ/mile$ to melt 8 inches of snow. Okay, so, a plowtruck uses diesel. Each gallon of diesel has 136.6MJ. Very conservatively assuming a plowtruck gets ~5 miles to a gallon (I'm guessing it's more like 10, someone who has driven one, correct me and I will correct these #'s), it would take 27.3 MJ to plow one mile of snow. Compared to 41,184MJ to melt it. It literally takes 1500x as much energy to melt is as it would to move it. This is what you would call a very very bad idea. Engineers as cofounders should know better than to let this slide as a potential solution. End of Math Section Okay, so now that we've completely dismantled the case of using these things to melt snow, lets move on to some other issues. We'll skip the minor issues, because that's just nitpicking, and move straight to the parts where they just don't know what they are talking about, and finish with things they clearly know about, but are purposefully misleading people with in order to get more money. Finally, we will close with me realizing that Nathan Fillion is a fool. Okay, to the problems with this solar roadways project: Dubious assumptions: Things they don't understand: the supply lines of a very basic input. REE mining in China is not a clean thing. Nor was it great in the US. Right now there is not enough world production to make enough of these solar roadway tiles. Look at this article to see more pictures of REE production in China. They assume an 18.5% efficiency of the solar panels. These are panels that use Rare Earth Elements (REEs). On their FAQ, when someone asks if they are using REEs, they state (paraphrased), "Our electronics don't use silver or gold" (neither of which are REEs, so they are either changing the topic or don't know what question they are answering) "but we can use any solar cell." Good that they can use any solar cell, because there is not enough REE production in the world to produce solar at the scale they need to even replace one major highway with these. Bad they they use 18.5% as their assumed efficiency, because solar cells in this range of efficiency use REEs. REEs are pretty much only produced in China, because producing them make a massive amount of pollution. Decades ago every other major country quit producing REEs because of the pollution they cause, and because China didn't care about pollution or health hazards, so the world was happy to let them pollute themselves and take their REEs. It's been so long since the US produced REEs that we literally don't know how. Solar Roadway's answer is "let's leave this to the government." They aren't addressing the problem at all. While other countries are looking to have their own production, it will take a very long time for this to come to fruition, and the production rate still won't be enough for a second-rate harvesting design (flat roads with bad optics vs. tilted panels with great optics to concentrate light perfectly). At best, they can go with non-REE solar cells, which have about an 5-10% efficiency. That means that each of their hexagonal panels will produce half the power anticipated, and thus will make half as much money toward recuperating their costs. In other words, these non-REE solar panels need more basic raw materials (in terms of roadway) per kwh produced, and thus will cost more per unit energy, in an already material-intensive design for a solar cell. This shows that the project is lacking in any real expertise or understanding of the core problem they are trying to solve. Keep in mind that these are not dealbreakers. The team could hire an expert, or consulting, to fill in their knowledge gaps (likely the former, consultants are expensive, and they really need long-term help to bring this to fruition). Also, it doesn't negate all the other benefits of the solar roadways. Finally, non-REE solar panels are a hot topic in research. If the rest of the solar roadways tech is developed, and they are just waiting for good solar cells, it will rapidly enhance future deployment. In short, the solar cells are a slight additional benefit to whatever holds them in this case of mass-distribution and inefficient use of cells. So if this new road itself doesn't compare favorably to asphalt, the project is sunk in the water. Things they are just completely wrong/misleading about: melting snow, shutdown of fossil fuel, price of energy We discussed the melting of snow. They suggest it replace snowplows. Bad idea. It's clearly not going to work, energetically speaking. They keep talking about how 50% of US electricity use is from fossil fuels, and how these roads are going to replace it. This is so wrong that it is hard to debunk in one post. But here goes: First, only 40% of US primary energy (my link, please read it for background if you feel a bit lost, it is far briefer than this post) is for electricity. Second, only 66% electricity of this comes from fossil fuels. In other words, 26.4% of US electricity comes from fossil fuels (if we change all our transportation over to electric, these numbers will change, but that would require these roads to have induction power installed - AKA roads that provide the car with energy for driving so they don't have range issues). This is the total amount of emissions that could be replaced by solar roads in their current design. Primary energy in the US. As detailed by the math above, only 25% of primary energy in the US can currently be replaced. So, pretty much they are off to a bad/misleading start there. But this is nitpicking. The real issue comes in when they talk about replacing fossil fuels. First, they talk about heating the roads. This means they will have to put energy into the roads. Where will this energy come from? Power plants. So much for shutting down fossil fuel. But wait, there's more! Solar power is intermittent. It doesn't even work at night, so power plants also have to be on then. So pretty much, their idea of shutting down power plants is completely shot out of the water by these two things. Can solar roadways still be part of a larger energy solution? Well, not if they are heating roads to melt snow. That just takes far too much energy. If they scrap the melting snow idea and go to just producing energy? Yeah, it might help some. But let's get to one last funny part, the one that shows they know that they won't be shutting down fossil fuel power any time soon. Energy storage. From their FAQ, they mention that there will be "virtual storage" in that during the day they will add power to the grid, and at night they will take power from the grid. This is double-speak to mean: during the day we will provide power that can offset coal and natural gas power plants. At night when we aren't producing, natural gas powerplants (again, my link) will fire up to power our roads (nuclear is not an option for power phasing like this, nuclear powerplants don't spin up or wind down on half-day timescales). In other words, they fully well understand that they aren't going to do away with the rest of the power grid, and that they aren't going to replace all those fossil fuel emissions. So pretty much, saying that these can replace our power grid is double-speak sales points. The final problem? They don't understand energy distribution. Electricity is produced at about$0.03 to $0.08 per kwh at a power plant. By the time it arrives to us, we pay$0.13 to $0.25 (or$0.50 in Hawaii), because distribution costs a lot of money. Solar panels on our roofs produce power that costs about $0.15 to$0.20 cents per kwh, give or take. So the end-user cost of grid power is the same as that of house solar. But if you run that solar power through the distribution channels and add that price, suddenly you're talking $0.25 to$0.40 power. So, unless they are giving this power away for free, it's probably not gonna be a great solution.

Some Solutions

I've softened my usual tone quite a bit for this writeup, cause I don't want to be a complete naysayer of something who is trying to do something positive (sorry, I know how much you all know and love my biting sarcasm and scathing reviews).Outside of their false solution of trying to solve the energy/climate issue, this idea has some potential. On that note, rather than pointing out problems, I've come up with some great solutions.

My suggestions:

1: Nix the whole melting of snow concept to replace plow trucks. Energetically, it doesn't work. Plow trucks should still exist. Instead of replacing them, replace the salt and sand they need to spread. Make it so plowtrucks plow all but the last 1/8" of snow, then melt that (note, this is still a tremendous amount of energy, but stay with me). This will have a few benefits:

• No more salt and sand on roads means less salt and sand damage to vehicles, making vehicles last longer
• No more salt and sand on roads means that DOTs can save money buy not buying these things
• ... no salt and sand runoff, which pollutes local waterways
• ... animals that go to roadways in the spring to lick off accumulated salt won't do that, reducing traffic accidents from moose and deer, etc.

2: Get a bit more cognizant or REEs and their limitations. Don't use bad assumptions that are easy to poke holes in.

3: Stop selling people on false promises of doing away with fossil fuels. It makes the whole green movement look bad when prominent people are lying or severely misinformed.

4: Focus on the real potential of making these have inductive energy for electric cars. This could eliminate range anxiety (people fearing their electric cars will run out of energy and leave them stranded). Electric car sales will move a lot faster if people can drive from LA to SF, or between Boston/NYC/DC. The potential partnerships include every major car company that markets in the US. Also, this could reduce oil use, and drastically reduce air pollution from cars in these busy areas by further replacing combustion engines with electric ones (even if we power them with electricity from coal, a well-scrubbed coal plant produces fewer bad things than a car). Moreover, since people won't need fuel, they could be assessed a charge per mile driven instead. By whoever owns the roads. Here is your real money-maker for the roads, fellas. It will be far more lucrative than producing tiny amounts of electricity. Please get on this. It will lead to more electric car research, and more rapidly drive forward battery development, and it turns out that cars make a bunch of really bad pollution that causes harmful side effects like death.

This last bit, changing your startup's tack when a better model comes along, is important. And solar roadways needs to do that for a viable product, because their core solution faces a lot of headwinds (yay, sailing puns!) in break-even with their current model.

So, overall, these roads could be an excellent idea. The solar part, their main selling point, is BS because of cost, efficacy, and the need for gas-fired power plants to supplement them. The shutting down most fossil power plants is a lot of nonsense for the same reason. Making the environment better by reducing salt and sand use? Decent. Potentially by making most cars electric? Game-changer, but they are barely looking at that aspect right now. Probably cause they are too busy counting the piles of cash that indiegogo just threw at them (or, more likely, answering the insane number of emails that comes from this sort of campaign).

Hokay, that's my piece. Thanks for reading this long one.

- Jason Munster

Extra stuff!

Some background about Solar Roadways initial funding: They were funded by government SBIR. This stands for Small Business Innovative Research. It's for high-risk, high-reward research. In other words, this was considered high-risk from the start. They got a phase II, which means they did well. It's clear they still have issues and are still high-risk. But I'm glad someone is paying for research and innovation like this, especially because if it pays off, it could result in more jobs and more taxpayer base. That being said, they haven't received more funding or any grants to build this out further. Possibly cause it's a big, crazy idea. Elon Musk can pull off big, crazy ideas, because he is a brilliant manager and has a very strong personality. These guys are going to need some bigger guns on their team if they are going to make something of this project.

Second, Nathan Fillion is a bit of a fool. In touting Solar Roadways, he displays why pop culture heroes shouldn't get involved in matters outside their field of expertise (mainly, looking good in front of a camera, and pretending to be someone who they aren't in front of a camera). His adoration of something he doesn't understand falls deep within the territory of religious fervor. Nerds: just cause one of your heroes likes something doesn't mean it actually is plausible.

One final-final note: I know that this post is 3x longer than my rest. I assure you, it's far shorter than I wanted it to be. I don't believe in two-part posts very often, though. If you have read this far. please leave a comment so I can appreciate you forever 🙂

*Engineers who don't know what numbers to run are a bad investment. For my own company, all business types are skeptical of how much I know (or want to take advantage of me fully) until they find out that I used to be in finance and have a really good idea of the big picture of most things. In short, this company has a lot of potential once they take on broader experts.

# China's Water Shortage and Power Plants (their power plants definitely have a drinking problem)

In the previous post, I described how thermal power plants use a massive amount of water. This time we are going to explore a specific case. As usual, it's China.

Power plant water use can be a problem in a water-stricken area. Let's look at a case-study. China is a water-stricken area, and has a lot of thermal power plants. In fact, China uses more primary energy than any other country in the world. Unfortunately, their power plants are far less efficient than they should be. So they are wasting water, and this is unsustainable. Moreover, China has 1,350 million people. The US has 314 million.

First, let's look at the rainfall of China, compared to the US:

Rainfall in China, in inches

Rainfall in the US, in Inches

Looks pretty similar, right? Now recall that the US has 1/4 the population of China. And pretty much the exact same amount of area. Keep that in mind while we look at China's powerplant locations:

China's water stressed areas, compared to where power plants are planned. Source,

So. The places that have the most people and need the most power are the same as the dry places. In other words, China is building the bulk of its thermal power plants in the area that can't provide sufficient water to cool the power plants.

Before coming to the complete picture, let's check out the water use:

Fresh Water Use in the US.
source

In the US, 80% of water use is to grow food and to make electricity.

Finally, where is all this water coming from? Rain alone isn't enough, it comes from the ground. Fresh water from the ground is not unlimited, and we are running out of it. It's called Fossil Water, and here is what the situation looks like in the US:

Water withdrawals in the US

In other words, a huge chunk of our country is relying on water that will not exist in a few decades.

And looking at China:

China's groundwater depletion rate

In the US, the scale of groundwater depletion tops out around 400 cubic kilometers. In china, it tops out at 3,000 in regions. That's not to say that the US won't run out. It just says that China is in serious trouble.

Again, 80% of water use is for electricity and agriculture. And China has 4x the people of the US. There is not sufficient water. Would you rather run out of electricity, or run out of food? It's not an easy choice, but food can be imported. That being said, someone has to grow the food, and that country better have a robust water supply. Moreover, food growth is a low income industry. A country that marries itself to being a food supplier, unless it charges gouging levels of prices, is marrying itself to never being a high-income country. But charging price-gouging levels is a bad idea.

While this mental exercise was fun, let's look at some examples.

First, while Californians probably shouldn't have been growing water-intensive almonds in a dessert in the first place, running out of water has imperilled the world supply of all sorts of nuts and things. They are tearing up their farms because of lack of water.

That's only the start. Drought in Syria helped bring about war there. Syria is a tiny country that doesn't matter on the world scheme. India, China, and Pakistan face water shortages. Combined, they have 1/3 the world population. They also happen to hate each other. As climate change progresses, and some countries face droughts, people may not want to choose between food and electricity. They may try to divert water supplies, sparking tensions and even war.

So. Does your power plant have a drinking problem? If you live in China, it definitely does, and it's causing all sorts of strife.

Wrapping it all together: Yes, a country can import food. But you know how much of the world relies on the middle east for oil, and we talk about energy security? That's just stuff that makes your cars move. Remember how Russia threatens to shut off natural gas to Europe if they don't get in line with Russia's plans, and so much of Europe is cowed? That stuff keeps homes warm, but it isn't as important as food. Imagine a powerful country that is mostly reliant on other countries for food to stay alive. That's a really bad situation. The country in this situation has to either take dictations from whoever feeds them (not really a problem if you are getting your food from non-powerful nations, but still irksome), or has to take over a food-producing country.

One potential solution: Chinese power plants are notoriously inefficient. If you have a 25% thermodynamically efficient powerplant, it uses 30% more water than a 37.5% efficient power plant. China should either shut down inefficient plants and require new construction that is efficient, or require retrofits of old plants. It would be very expensive, but less expensive than the social and political cost of running out of water too soon. What about the US? Most of our plants are pretty efficient already. Especially our Natural Gas plants that much of the country runs on. We probably spend too much water on watering desserts to make food, but that's another story.

An almost-final note. While solar power and wind power use water in construction, their water use is minimal compared to that of thermal power plants. Barring solar-thermal (it's thermal, it uses water), these renewable resources are the only answer to the reducing the choice between electricity and food. In other words, expansion of wind power and solar PV is the only cheat code we have to deal with this impending water shortage.

One last thing. Why did I single out China? Only because I know a lot about China. Pakistan will have water shortage issues, but they already don't have electricity. In the summer, they have blackouts for up to 20 hours a day cause they can't produce enough electricity. This is a country of 180 million people, bordering India, and sharing a strong mutual resentment with India. More on this later, though.

- Jason Munster

# China, Accounting Pollution in Manufacturing, and Greenwashing

A Call for a Consumption Based Pollution Levy: Pollution from Chinese Export Manufactures Drift to US West Coast

Pictured here is a NASA image of smog in China. Nearly all the gray is smog. This is a result of the rise of manufacturing, and rapid production of low-quality power plants

Guys, no science in this one. Also, stay tuned for a better treatment of this topic from Archana Dayalu over at Policylab. I originally wrote this for policylab, but it turns out Archana had the same idea earlier. Hence you'll notice a completely different writing voice (it's not the fun one I use in my blog).

As I wrote in the past, outsourcing of manufacturing jobs allows the US to push all the pollution in manufacturing into other countries while enjoying lower prices of goods manufactured by cheap labor. Thanks to Kate Wang for bringing a recent NYT article to me attention.

An early edition report from the Proceedings of the National Academy of Sciences (PNAS) shows that a significant amount of pollution drifts from China to the west coast of the United States. The authors argue for a changing of attribution of the associated pollutants to the consuming countries, rather than China, the producing country. The authors gloss over any potential impacts this would have on world trade. Lead author Jintai Lin writes:

Atmospheric modeling shows that transport of the export-related Chinese pollution contributed 3–10% of annual mean surface sulfate concentrations and 0.5–1.5% of ozone over the western United States in 2006. This Chinese pollution also resulted in one extra day or more of noncompliance with the US ozone standard in 2006 over the Los Angeles area and many regions in the eastern United States. On a daily basis, the export-related Chinese pollution contributed, at a maximum, 12–24% of sulfate concentrations over the western United States.

In other words, goods manufactured in China and consumed by the United States directly cause pollution in the western United States. The upside is that the former heavy manufacturing centers in the Eastern United States have outsourced to China, cleaning up the air of the Eastern US. The article points out that, given the dense population of the east coast, this is a net win for the US, at slight expense of the west coast and great expense of pollutants in China.

Air pollution in Beijing. One picture taken on a clear day, another on a smoggy day. This is the capitol city of China. This is the ugly side of outsourcing.

It remains unclear what the author's ultimate goals are. There is no international accounting of pollution. Either the authors are greenwashing--the practice of trying to make manufacturing or other industry look environmentally more friendly through the process of bullshitting--or they are anticipating some accounting system, either internal to China or external, in the future.

The authors argue for a different method of accounting for pollution associated with manufactured goods. Currently, all pollution is attributed to the producer. Chinese factories build the goods, China gets assigned the pollution in international ledgers. Consumption based attribution, they argue, would make more sense. The goods are made for American (and otherwise) consumption, and the pollution should therefore be attributed to America.

Disregarding whether this is right to do, or whether it would accomplish anything more than green-washing China’s economy, let’s explore several of the implications of this policy change. Specifically in a hypothetical world that has to account for pollution contained within products, which, aside from green-washing, would be the major reason to worry about pollution attribution. Manufacturing of these export goods requires significant amount of energy. The sulphur and black carbon that reaches the west coast specifically come from coal-fired ower plants. China puts few controls on emissions from these power plants, and the required rate of construction results in power plants that are significantly less efficient than those in the US. This means that every bit of energy produced and used in China, for manufacturing or otherwise, contains more pollution than it would in the US or any other developed country. Moreover, Chinese manufacturing is less efficient than developed countries for a variety of reasons.

The end result is that a good manufactured in China embodies more pollution than the exact same good manufactured in the US, Japan, Korea, Europe, or any other advanced nation. If policies were put in place to move to a consumption-based attribution of pollution, and that attribution had real-world implications on the cost or value of a product, Chinese goods would face a competitive disadvantage. The implications are pretty straightforward: either China cleans up its manufacturing and energy sector, greatly benefitting China and slightly benefitting the rest of the world from a pollution standpoint, or goods are produced in countries where they can be made for less environmental cost, hurting China’s exports while healing its air quality and benefitting the rest of the world financially and environmentally.

While this attributing of pollution on the consumption side seems to mostly have net benefits, it only works if purchasers or producers are forced to pay for pollution they bring about. We are not currently in a world where either are held accountable for the pollution associated with manufacture of Chinese exports. In this, Jintai Lin’s suggestion seems only like greenwashing: an attempt of finger-pointing for the destruction of China’s air quality and environment.

- Jason Munster

# Eating Beef and Mutton Causes 15% of Climate Change Emissions

Meat!

In what may be the worst article I ever read (not in terms of scientific quality, but in terms of making me a sad clown), eating certain types of meat causes 15% of climate change. Unfortunately, you, reader, do not have access to the full article, so I will pull some of the quotes from it.

"Worldwide, the livestock sector is responsible for approximately 14.5% of all anthropogenic greenhouse gas emissions3 (7.1 of 49 Gt CO2e yr−1)." 5.7Gt of this is from ruminants, animals that have more than one stomach and chew their cud (about 4.6Gt from cows, .6Gt from buffalo, and .5Gt from sheep and goats). 1.4Gt are from monogastric, ie single stomached, animals: pigs, chicken.

Why do ruminants produce so much? Cause they belch methane. On a 20 year timescale Methane is 75 times more powerful a greenhouse gas than CO2. And why is this? We've discussed this before, but it is worth revisiting.

The Science of Heat-Trapping Gases (skip this part if you don't like science)

(Any atmospheric chemists reading this: I apologizes for bastardizing the science a little bit, but this is meant for a general audience, so I will gloss over details and simplify some concepts)

Electromagnetic Spectrum! (source)

First, let's revisit the idea of radiance. Everything gives off light. It's not light like we normally consider it, as in what we can see. Instead it is all sorts of light we can't see, either. Like infrared, UV, and even x-rays. You've heard of the electromagnetic spectrum. It's the picture above. Visible light is only a tiny fraction of it.

So. Again, everything gives off light. The wavelengths of light an object gives off is based on its surface temperature. Humans give off a characteristic light at around 35C, cause that is roughly our body temperature. This is just a small part of the infrared. The Earth absorbs the light that the sun gives off, warms up, and then emits its own light based on surface temperature. And this light it emits? It is heat. It is the planet/sun/person losing its heat energy.

And that light it gives off is in the range shown in the picture below.

Image from UCAR. Look at CO2, and then look at the region around 8.

The image above tells the whole story. Consider the drop in the line to be absorption %. In other words, a sharp dip in the line indicates that compound is re-absorbing the light that Earth gives off, trapping it in the atmosphere. If you look at the CO2 band between 4 and 5, and then the higher CO2 band, you see that it pretty much is absorbs all the light. If you look around 8, where methane absorbs, you see that it is pretty much wide open. So every bit of increase in methane is fully effective at trapping more heat emitted from Earth.

"But Jason," you say, "If CO2 absorbs pretty much all the light in it's region, how does more CO2 increase how much heat it traps?" Well, my friend, you ask an excellent question. You know the Doppler effect? The one where an ambulance siren sounds differently coming towards you than it does when it goes away? That is because the vehicle is traveling an appreciable % of the speed of sound, so it slightly compresses the sound waves when it comes towards you (the ambulance sort of is trying to keep up with sound waves, so it emits subsequent waves closer to each other) and spreads those waves out when it is moving away from you (the ambulance is kind of trying to move ahead of each sound wave it emits, so a little extra space is between wave peaks). Your ear interprets the pitch of sound based the distance between these wave peaks.

How the heck does this relate to CO2? Well, this doppler effect occurs in light absorption as well, mostly related to effects based on the distribution of temperatures in a set of molecules. There are many different types of effects with light absorption that can act similarly, and they are together referred to as Broadening Effects. They are called this because they smear out the absorption region. So, more CO2 in the atmosphere, more broadening of the light absorption. In other words, CO2 absorption expands out sideways in that picture of light absorption, which is less efficient than expanding directly down, like CH4 does.

Back to the Meat!

CO2 equivalent emissions from various types of meat.
From Ripple, W, et al (2014). Ruminants, climate change and climate policy. Nature Climate Change.

Briefly, ruminants produce a lot of CO2 per kg of meat. The above chart compares them all. Stick with poultry and pork.

Cow alone contribute nearly 10% of anthropogenic greenhouse gas emissions. There are 1.4 billions cows in the world. About 20 million get added per year. That's pretty much a cow for every first-world citizen. Now, I'm a die-hard carnivore, but that sounds like a lot.

Now that I've spent a ton of space on describing methane, let's talk about some other causes of emissions from cows. With 20 million more cows needing places to eat and live per year, there is massive deforestation. Cows also tend to destroy environments, making it difficult to grow stuff there later. In some cases, it rapidly converts land to desert. But watch this video where a guy talks about how managed livestock movements can actually reverse desertification.

Okay, back on point. We apparently eat too much cow. Well, we eat too much in general. I am sure that the people eating too much in general are also eating too much cow.

Scary point: I recently read that the amount of extra food that went into making our world's obese could feed 300 million people for life. In other words. nearly half of world starvation could be completely fixed if a bunch of us weren't overeating. And we'd be a good chunk closer to stopping climate change.

Shorter version: next time some vegan tells you that eating meat causes 15% of climate change, first, agree with them. Then let them know that it is mostly from people over-eating cow, and that since you eat mostly chicken and pork, they should bring their complaints somewhere else.

On a more serious note, I do not like admitting the reality of cow being bad for the environment. I love eating cow. I make smoked meat. But we need to trust the numbers and be impartial towards these things. So I make mostly smoked pulled pork and pork ribs. And I eat a ton of chicken.

- Jason Munster

# Deadhorse 4 - The end.

*Note: I wrote most of this during the 4th week in Deadhorse. It is pretty embarrassing, but I will publish it unedited. 600 straight hours of sunlight and working every day makes your brain think you are on the longest unending day ever, and it punishes you.

(2017 edit: This post is not embarrassing at all. Depression from difficult work settings is a real thing.)

My best shot from Prudhoe Bay. Click for full image.

Good news! With my return to Harvard, this will be the last bullshit post for a while. Climate science posts will shortly resume, after a brief break!

Deadhorse is Behind Us (better than the original section title "Deadhorse is in our Rear")

We have ended our month in Deadhorse, Prudhoe Bay, AK. I am now home. I am suffering from some pretty severe culture shock, cause I've been thrown back into my job in a Harvard undergrad dorm. So I am going from hanging out with 6 surly scientists with declining hygiene habits to 400 energetic Harvard undergrads putting their best forth for the new schoolyear.

Week 4

The airplane was fixed hours after my last post. The instrument worked on all fronts. We are collaborating with the Navy on some research up here, and we will continue to collaborate with them back in lab in Cambridge.

Last night we were talking about various small airlines that used to kick ass. Apparently Midwest would serve you steak and beer on flights. We would always ask what happened to each airline after we heard how great it was. Apparently Midwest was bought by Northwest.

One of the group (left nameless cause HR things) mentioned that there had even once been a Hooters airline. When we asked him what became of the airline, he deadpanned, "It went tits up."

Yep, pretty much par for the course for our conversations up here.

Sunset over the horizon, taken in the last days when the sun finally got tired of being up all the time

Deployments are Weird Anywhere

Our airplane mechanic was deployed in Afghanistan for 3 months as an airplane mechanic, and also in several other places. By the middle of the 3rd week, everyone was making awful jokes. At the end of the 4th week, no one was talking to anyone else. We mostly just sat silently and did our work. "What happened?" we would say. "Did we just run out of awful jokes?" Naw, says our mechanic. "I've been on several field deployments and noticed a cycle. At first you are excited, cause you get to see a new place and the pace of everything is changed. Eventually you fall into a groove and start making jokes with everyone. Then everything is all the same, and you sort of drift into depression."

Yeah, that happened.

Days before this discussion, we had already banned all movies that didn't have happy endings. Depressing or down-beat songs were all vetoed. We only wanted to watch action movies and comedies. It's strange how off a weird place can make you after only 4 weeks.

Home!

As the only young unmarried person on this trip, I think I missed Boston more than everyone else. Boston is fucking awesome in the summer if you are single. Deadhorse is not.

The Aftermath

I wrote this section after a week at home, so I am more sane again.

When I first got back, I was really awkward. Sometimes I would be listening to conversations, and want to join in, and have things to say, but I couldn't figure out when there was about to be a break in the conversation. And then I was so focused on trying to find that break that I forgot what I was going to contribute. Other times I just said awkward semi-related things. I kinda just sat around listening to conversations and trying to figure out how it worked while everyone wondered why I was creepily sitting in the corner listening to their conversation.

So pretty much I got to be an introvert for a day.

We managed to measure via an aircraft whether the ground is uptaking or emitting CO2 and methane. We have to crunch the numbers to see what is happening where. This is pretty significant. It will definitely add some serious weapons to the climate change observation arsenal.

We will be upgrading the laser system on the CO2 instrument, and the detector on both methane instruments. Claire and I have enough data to each get a PhD even if we don't get funded for field work next year.

On that note, there is a good chance we will get funded for field work next year. We will have two 4-week stints in the field each. Hopefully we are better prepared for it this time.

Mather

This week was advising week in Mather. We resident tutors directly advise sophomores. It is a long, stressful week. It's over with, and I finally feel like I can take a day off after about 3 months of no real rest. So I am gonna help a friend move. And then go kayaking. Sunday is more sophomore advising stuff, pretty much all day.

Classes

I am taking an advanced statistics course and Mandarin.

Future Posts

I will be getting back to real posts after this one.

# Deadhorse 2: A Descent Towards Impropriety

"How come the only time I hear poop jokes is when I am with the Harvard team?" -Our airplane mechanic.

Caribou with a drill rig in the background

Imagine working 12-14 hours a day, 7 days a week, in a place where the sun never sets. You lose track of which day it is, how long you have been here, how long you have left here. People here work 2 weeks on, 2 weeks off. More than that and it gets weird. Oil workers work 3 weeks on, 3 weeks off. Their motto? "It's not gay if it's week 3!"

When I first arrived in deadhorse, it was more like this:

Apparently at third week, everyone gets confused and it starts to look like this:

We are here for a little over 4 weeks. How's this affecting our group? We are making awful jokes. We've all started making 3 week jokes around the oil and other workers. Recently I was hanging out playing Magic: The Gathering (yep) with some random people I met here. Chris comes down to make fun of me a bit, starts walking towards the cafeteria, and asks if I want anything. I say, "From you? It's not week 3 yet." Laughter all around. Literally every single person here enjoys a good 3-week joke.

I found out that Deadhorse has almost no real permanent residents. There are a very small number of people that enjoy working here and don't like society. They stay for 13 weeks, and are forced to take a week off. They make more than \$10k a month and have no expenditures (all food and such is provided), and they have done this for 20 years. In short, they are millionaires and just don't want to be anywhere else. Outside of this, everyone leaves Deadhorse.

As you can see from the caribou photo above, this place really is just oil and wilderness. It is all dirt roads, and there is no car wash. Check out this bus!

Dirty bus! There is no pavement here, and there are no car washes.

Slope Wives

I had to take a day trip to Anchorage to pick up a vital piece of equipment. While there, I went out to a bar and talked with a ton of random locals. I heard about a phenomenon called the Slope Wife. It's been said here that when you go to the slope, you don't lose your wife/girlfriend, you just lose your place in line. I thought this was an exaggeration. It's not. Everyone I ran into in Anchorage said that if a woman has a husband on the slope, she is highly likely to cheat on him. They are in effect "open season" at the bar. I don't like this. I was happy to return to my team on the North Slope after a night in Anchorage.

Mag-Tec

We live in a man-camp called Mag-Tec. It's really great here. The food here is amazing. 3 really great meals a day in a cafeteria. On one of my first days here I walked into the cafeteria and Charles, the cook, yells to me "How do you like your steak?" I thought he was kidding. And then I saw a giant pile of steaks. It's some of the best steak I have eaten. On Sunday nights, they have prime rib. In 4 more hours, I get to eat some excellent prime rib. You know when else I have been able to have prime rib? Pretty much never. This place is great in that respect.

Rooms are off a hallway with shared bathrooms. We can't lock the rooms during the day. The place is like a dorm. We hang out in our rooms at night. A bunch of 30 and 40 year olds sitting in a tiny dorm room, interpreting data and making awful jokes. It's like something out of a Saturday Night Live skit.

Prime rib and shrimp. We get this every Sunday.

Research

We are kicking ass up here. More on that next week. For now, here is a photo of our plane flying low over ground.