Questions tagged [greenhouse-gas-emissions]

Gases that contribute to global warming by trapping radiant heat from the sun in the atmosphere. Use this tag for questions about sources of emissions, or ways of reducing emissions. For question about measurements use the [carbon-footprint] tag. For questions about offsetting use [carbon-offsetting]. For questions about the effects of [global- warming] use that tag.

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How much additional CO2 emissions will result from recent changes to US vehicle regulations?

From the Guardian, March 31, 2020: Trump to roll back Obama-era clean car rules in huge blow to climate fight (emphasis added): The Trump administration is rolling back the US government’s ...
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Which countries, regions, or cities have set a date to ban the sale of gasoline and diesel cars?

This week, the UK announced that sale of gasoline and diesel cars will be banned by 2035. This new policy moves the date up by five years, and also includes hybrid vehicles. From 2035 on, only ...
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How much does the methane content of natural gas vary, and what is the impact?

According to Wikipedia, natural gas is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, but commonly including varying amounts of other higher alkanes, and sometimes a ...
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My residential colony burns dry grass every year; how can I stop them?

Every year during June-October, it rains and a few months later after the rainy season there is a lot of grass growing in the empty sites in my residential colony. So all the grass is cut, piled up ...
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How many grams of CO2 are emitted to produce one paper napkin?

Does using paper napkins have a high carbon impact?
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What are the impacts on CO2 emissions from using cloud software?

I am wondering what are the positive as well as negative impacts on CO2 emissions from using cloud software like Google Sheets, in comparison to traditional software that run locally or on a local ...
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Which materials dumped into landfills are the largest sources of methane?

Recent research has shown that landfills (garbage dumps) can be major emitters of methane. The largest methane emitters in California are a subset of landfills, which exhibit persistent anomalous ...
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How sustainable is replacing a gas car with an electric car, since gas car still exists? [duplicate]

I drive a 2010 BMW 535i maybe 100 km/week, mostly urban driving. My wife also has a gasoline car which we can use for longer trips. I want to reduce our greenhouse gas emissions by buying an electric ...
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What would happen to greenhouse gas emissions if no more humans were born?

While discussing global warming and climate change, I have often seen people say that overpopulation is the real problem and that the biggest thing anyone can do is have one fewer child. Some people ...
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Emissions offsets versus avoidance: can they be compared?

I'm going to be traveling from London to Toulouse next year. I could take a flight for around £100, or a train journey for £170. The emissions for the flight would be about 500kg, which would cost ...
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Plane and train greenhouse emissions - comparison taking infrastructure in account or not?

In the news or various other places, we see often that train travel produces significantly less greenhouse gas than air travel, without much information about how this is calculated. For example here :...
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Is there a Life Cycle Analysis comparing natural gas and propane as heating fuels

I am choosing between natural gas and propane for a boiler. I see a discussion here where the accepted response primarily deals with the CO2 released during actual burning of the gas. I am curious ...
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How does the climate impact of an LNG-powered cruise ship compare to flying?

Taking the Iona as an example, it is claimed that "The cruise ship will have a reduced carbon footprint with zero sulphur and nitrogen emissions." Sulphur and nitrogen, while pollutants, are not ...
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CO2 track of staying in huts which are supplied by helicopter

How much CO2 do we produce by sleeping on average in a hut (including breakfast and dinner)in high-altitude > 3000 m)? Let's assume that the hut offers 50 beds and that a helicopter has to supply the ...
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With current technology, how much CO2 is emitted when making renewable power plants?

In order to make a solar panel or a wind turbine, a few basic inputs are required: labor energy water raw materials Given the current abundance of renewable resources, I assume that the first three ...
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What information is lost when converting other air pollution into CO2e?

I'm struggling to explain the most important aspects of air pollution in a concise way. I understand CO2 is the biggest issue and long-term driver of global warming, but beyond that I'm lost. News ...
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Is burning wood the same as letting it biodegrade from a CO2 emissions perspective?

I always thought, that burning wood, would be bad for the total CO2 in the atmosphere until I heard it being pitched as "renewable energy". Now I am slightly unsure. The logic goes like this: Wood ...
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Shortcut carbon emission trading by buying and sinking coal

Carbon emission trading is supposed to use market mechanisms to make carbon-intense processes less attractive. Unfortunately, the EU market is flooded with emission certificates, such that the ...
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What is the average CO2 emission for a human while debating?

I am looking to calculate the CO2 emission of an average male human while arguing/debating. It is my understanding that the amount of CO2 emitted will be based on the respiratory rate of any given ...
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Which climate change mitigations take longer than 12 years to see a net benefit?

The recent IPCC SR15 Report has garnered a lot of press coverage because it warns that we must dramatically reduce CO2 emissions by the year 2030, less than 12 years away. Global net anthropogenic ...
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How much increase in GHG emissions is caused by Amazon Prime?

From Wikipedia: Amazon Prime is a paid subscription service offered by Amazon that gives users access to free two-day delivery (one-day in some areas) [...] and other benefits for a monthly or ...
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A more useful metric for greenhouse gas emissions reduction targets?

A useful metric for vehicle efficiency is miles per gallon, kilometers per liter, or liters per 100 km. The amount of gasoline used by a given vehicle can easily be understood and compared. Energy ...
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Why is the per capita CO2 emissions so much higher in Wyoming than in the Northeast?

Per capita CO2 emissions are several times higher in the "red" states of the West and South than it is in the Northeast. I cannot imagine why. From "List of U.S. states by carbon dioxide emissions"...
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Can Siberia's greenhouse gas be harvested?

Russian scientists find 7,000 Siberian hills possibly filled with explosive gas. I wonder if it makes business sense to harvest these explosive gases and turn them into liquid natural gas for later ...
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How much could the US reduce its electricity demand if people moved from Texas back to Ohio?

I have a theory that I am trying to develop empirical support for. I believe that the migration of people from the Rust Belt to the Sun Belt has caused an increase in overall electricity usage and ...
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What has been the greenhouse gas impact of shutting down Japanese nuclear power plants post-Fukushima?

Japan shut down virtually all nuclear power plants after the March 11, 2011 earthquake, tsunami and nuclear power plant accident. What has been the greenhouse gas impact of this decision? Have people ...
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How much CO2 do I cause with one Google search?

Is there any data about the CO2 emissions per individual Google search? Or are there none because Google is moving towards 100% renewable energy supply? Scope: Just the search query, no lifetime ...
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91 views

What is meant by Global-warming Potential (GWP)?

I was under the impression GWP (global-warming potential) is the measure of a gas' impact on global warming, in comparison with CO2. E.g. methane has a GWP of 86 over 20 years - Wikipedia Comparing ...
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How much CO2 do those gas flame pits outside restaurants emit?

I've been noticing gas-fueled flame pit displays outside some "hip" restaurants, such as this one shown in a Portland Monthly article. I find myself reacting to them with disgust; it looks like they'...
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Are my compost piles adding CO2 to the atmosphere by offgassing?

I make several compost piles, flip them regularly, add some additives and apply them to my crops. I often cover the piles when its rainy, will this affect the offgassing? Some of my neighbors apply ...
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What is the most environmentally-friendly fuel source (e.g. wood, coal, oils, alcohols) for campfire cooking?

When factors like emissions, renewability, and heat / energy efficiency are all taken into account, what would be the very best fuel source(s) to use for camping cooking, with sustainability and ...
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139 views

What is the share of global human CO2 emission of cargo transport by ship?

I had an argument how bad global economic trade flows really are. The question was in particular how bad worldwide transports on cargo vessels (containers, ...) are in terms of CO2 production as well ...
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Could global shift toward vegetarianism be a big step in solving food, water, health, ecological, and economical crises?

Some people, like myself, made a conscious decision to exclude various animal products from their diets, believing that this is an inevitable requirement if our species intends to live on Earth ...
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415 views

How much of the emitted CO2 is human caused

Looking at the atmospheric CO2 concentration measurements, e.g. from Mauna Loa, the table there says that the increase of CO2 concentration in the year 2012 was 2.66 ppm/yr. How many percent of this ...
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How do atmospheric concentrations of CO2 and NOx vary by city and within cities?

What would a well ventilated port city such as Honolulu, Hawaii, USA have for the concentrations (in parts per million) of CO2 or NOx, compared to a city like Linfen, China which is the site of a ...
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How do I determine what my biggest personal impact on global warming is?

This question is basically a follow-up question on something EnergyNumbers mentioned in his answer to this now closed question. He wrote that together, our impact (on fighting global warming) can ...
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219 views

What are the greenhouse gas benefits of vegetarianism?

I'm looking for a range, or better yet, likelihood distribution, compared to: The average US meat consumer. The average world meat consumer. How significantly are those averages affected by: ...
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225 views

Are there meaningful ways to offset greenhouse-gas emissions through carbon offset schemes?

There are various schemes offering carbon offsets. What attributes would make such a scheme meaningful? That is, where would my additional money into the scheme lead to lower global emissions than ...
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Which gases increase the greenhouse effect more than carbon dioxide?

Everywhere can be read that carbon dioxide increases greenhouse effect. But there are other gases having worse effect than carbon dioxide, e.g. methane. Is carbon dioxide emission the real threat, or ...