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CO2: Difference between revisions
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*<p>[https://www.iea.org/reports/tracking-transport-2019/aviation air travel]</p> | *<p>[https://www.iea.org/reports/tracking-transport-2019/aviation air travel]</p> | ||
*<p>[https://www.iea.org/reports/tracking-industry-2019 industrial emissions]</p> | *<p>[https://www.iea.org/reports/tracking-industry-2019 industrial emissions]</p> | ||
*<p>Some agricultural emissions, methane.</p> | *<p>Some agricultural emissions, methane.</p> | ||
[[File:A ton of CO2.jpg|alt=A ton of CO2|center|thumb|'''Figure 1'''. A ton of CO2]] | |||
<p><b>To keep below two degrees, we will need to dramatically reduce current emissions and simultaneously remove 10-15 gigatons of CO<sub>2</sub>/yr from the atmosphere by 2050 and scale that to about 20+ gigatons annually by 2100. Depending on how quickly we reduce emissions, the amount we need to remove from the atmosphere scales proportionally.</b></p><p>Greenhouse gas emissions are described in units of tons. It’s hard to think about how much “a ton of gas” really is -- this is how big, at surface temperature and pressure. Here’s an animated video visualizing a bunch of these one-ton balls in New York City.</p><p>xxx</p><p>If you’re in the US, you’re responsible for emitting about 19 tons of greenhouse gases a year. <a href="http://projectwren.com/">Wren</a> has a nice calculator that asks you about your commuting habits, flights, and diet to estimate your total GHG emissions. <a href="https://erikareinhardt.com/personal-climate-action">Erika Reinhardt wrote a detailed guide</a> on how you can reduce your emissions. With that in mind, see emissions per capita:</p><!--kg-card-begin: html--> | |||
<iframe src="https://ourworldindata.org/grapher/co-emissions-per-capita" style="width: 100%; height: 600px; border: 0px none;"></iframe><!--kg-card-end: html--><p>You may also hear people talk about “400 parts per million CO<sub>2</sub>” or similar. This maps directly to the amount of gas emitted: when emissionsmix into the atmosphere, we reference concentrationsof the emitted gas as a portion of the atmosphere. This is like stirring sugar into a cup of coffee. Climate modeling is based on these concentrations. For a bit more on how this measurement works, see <i>Basic intro to units and measurement</i>.</p><!--kg-card-begin: html--> | <iframe src="https://ourworldindata.org/grapher/co-emissions-per-capita" style="width: 100%; height: 600px; border: 0px none;"></iframe><!--kg-card-end: html--><p>You may also hear people talk about “400 parts per million CO<sub>2</sub>” or similar. This maps directly to the amount of gas emitted: when emissionsmix into the atmosphere, we reference concentrationsof the emitted gas as a portion of the atmosphere. This is like stirring sugar into a cup of coffee. Climate modeling is based on these concentrations. For a bit more on how this measurement works, see <i>Basic intro to units and measurement</i>.</p><!--kg-card-begin: html--> | ||