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Under2 Coalition

Under2 Coalition is a earth science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Under2 Coalition rather than just read about it. In short: The Under2 Coalition is a coalition of subnational governments that aims to achieve greenhouse gases emissions mitigation. It started as a memorandum of understanding, which was signed by twelve founding jurisdictions on May 19, 2015 in Sacramento, California.

Under2 Coalition — main illustration
Under2 Coalition — illustration

Key takeaways

  • Under2 Coalition belongs to earth science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Under2 Coalition to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Under2 Coalition from memory before moving on to harder problems.

Reference excerpt

The Under2 Coalition is a coalition of subnational governments that aims to achieve greenhouse gases emissions mitigation. It started as a memorandum of understanding, which was signed by twelve founding jurisdictions on May 19, 2015 in Sacramento, California. Although it was originally called the Under2 MOU, it became known as the Under2 Coalition in 2017. As of June 2024, the coalition represents 178 individual states, regions, provinces and subnational governments along with several other national and subnational entities. The list of signatories has grown to 270 governments, representing over 1.75 billion people and 50% of the world economy. The Under2 MOU was conceived through a partnership between the governments of California and Baden-Wurttemberg, with Climate Group acting as secretariat.

Purpose and intent The intent of the memorandum signatories is for each to achieve Greenhouse gas "emission reductions consistent with a trajectory of 80 to 95 percent below 1990 levels by 2050 and/or achieving a per capita annual emission goal of less than 2 metric tons by 2050. The signatories believe these actions are consistent with findings of the Intergovernmental Panel on Climate Change (IPCC) of what is necessary to avoid a 2 degree Celsius rise in average global temperatures. Organizers are concerned that a rise in global temperature above 2 degrees Celsius would cause widespread environmental harm. Signatories to the memorandum are asked to submit a plan to meet the target reduction of green house gas emissions by 2 metric tons per capita by 2050. Each of the governments also pledges to assist each other with scientific research, sharing of the available technologies and best practices in energy efficiency. The memorandum was developed just before the 2015 United Nations Climate Change Conference also known as COP 21 or Paris Agreement. The Under2 MOU allows subnational governments such as cities, counties and states to highlight their work to reduce greenhouse gas emissions.

History Subnational governments like cities, states and provinces have traditionally relied on national governments to take the lead on transnational climate governance aimed at addressing climate change mitigation through inter-governmental agreements. Some subnational governments have expressed frustration at the inaction of national leaders and took it upon themselves to create the subnational Under2 MOU agreement.[1] The major difference between an international treaty and the Under2 MOU agreement between subnational governments is that the Under2 MOU is non-binding.[2] In December 2015, California and Baden-Wurttemberg, who spearheaded the Under 2 MOU, announced that Climate Group would take on the role of secretariat for the pact. There have been efforts in the past to organize subnational governments to address climate change most notably through the Cities for Climate Protection Program - an effort associated with the International Union of Local Authorities and the United Nations Environment Programme. At its peak in 2010 the program had 700 municipal members who were required to provide among other things inventories and targets for greenhouse emissions. the International Union of Local Authorities provided technical assistance to the municipalities engaged in this planning. Before the Under2 MOU was conceived many subnational governments had taken the initiative to create a climate action plan. The purpose of a climate action plan is to identify the amount of greenhouse gas emissions produced by the jurisdiction and, in many cases, provide strategies to lower or stop greenhouse gas emissions altogether. Some governments have found that the data produced by the climate action plan increases transparency and helps with longterm planning to reduce greenhouse gas emissions. Since signatories to the Under2 MOU submit their action plans as an appendix to the document this is the first time some cities and states around the world are coming up with plans to reduce greenhouse gas emissions in their jurisdiction.

Participants

National Endorsements Armenia, Canada, Chile, Costa Rica, Czech Republic, Denmark, Fiji, France, Germany, Italy, Japan, Luxembourg, Marshall Islands, Mexico, The Netherlands, Norway, Panama, Peru, Portugal, Spain, Sweden, United Kingdom

See also United States Climate Alliance Mayors National Climate Action Agenda Climate Group Powering Past Coal Alliance C40 Cities Climate Leadership Group

References

Illustrations

Under2 Coalition illustration

Worked examples

Example 1 — a first encounter with Under2 Coalition

Start with the simplest possible case. Write down what Under2 Coalition claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Under2 Coalition before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Under2 Coalition ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Under2 Coalition

In research
Under2 Coalition appears in earth science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Under2 Coalition in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Under2 Coalition is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2015 in international relations, Climate change treaties, Emissions reduction, so understanding it makes those chapters shorter.
In everyday life
Look for Under2 Coalition outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Under2 Coalition in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Under2 Coalition means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Under2 Coalition out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Under2 Coalition in simple terms?

The Under2 Coalition is a coalition of subnational governments that aims to achieve greenhouse gases emissions mitigation. It started as a memorandum of understanding, which was signed by twelve founding jurisdictions on May 19, 2015 in Sacramento, California.

Why does Under2 Coalition matter?

Because it connects several earth science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Under2 Coalition?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Under2 Coalition.

Tags

  • 2015 in international relations
  • Climate change treaties
  • Emissions reduction
  • Organized events in California
  • September 2015 in Europe
  • September 2015 in North America

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