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Blog Posts: IPCC

  • Corporate Lobbying on Climate Change: Silence is not Neutrality

    While some companies are stepping forward on climate change policy, many others have remained quiet.

    WRI worked with the UN and several esteemed partners on a Caring for Climate report to create a common standard for engaging corporate responsibly in climate policy debates. The guide represents a baseline for action and transparent reporting.

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  • Analyzing the IPCC Report: 6 Things You Need to Know About Reducing Emissions

    The Intergovernmental Panel on Climate Change’s (IPCC) newest installment, Working Group III (WGIII): Mitigation and Climate Change, highlights an important message: It’s still possible to limit average global temperature rise to 2°C—but only if the world rapidly reduces emissions and changes its current energy mix.

    We've outlined six things you need to know about the level of emissions reductions needed to rein in runaway warming.

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  • What Is the Role for Transformation in Adaptation?

    Transformation is a word we use so often in our daily lives that it seems strange to stop and think about what it really means. But in adaptation circles, the definition and role of transformation has recently become a hot topic of conversation, in part because transformational change was an important theme of the recent IPCC Fifth Assessment Report, Climate Change 2014: Impacts, Adaptation, and Vulnerability.

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  • How to Address Risk and Make Progress on Climate and Development

    David Waskow discusses the recently released IPCC report. He suggests ways India can address risk and make progress on climate and development.

    This article was originally published by The Financial Chronicle.

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  • Key Points on Climate Adaptation from the New IPCC Report

    The new report from the Intergovernmental Panel on Climate Change (IPCC)—released last night—reveals several findings that decision-makers can keep in mind—both in order to understand current and future climate impacts, as well as develop strategies to help societies become more resilient to them. Here are a few takeaways that can inform the future of climate change adaptation:

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  • 4 Takeaways from IPCC Report Reveal Worsening Impacts of Climate Change

    The first installment of the Intergovernmental Panel on Climate Change’s (IPCC) Fifth Assessment Report (AR5)—released in September—confirmed the overwhelming scientific consensus that the world is warming, largely due to human activities. The Working Group II (WGII) report, released today, takes this finding a step further: Not only is climate change happening, but every continent on earth is now experiencing its impacts.

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  • Visualizing the Global Carbon Budget

    There’s a lot we can learn about the "carbon budget"—what it is, what the impacts will be if we exceed it, and how we can stay within it. WRI created a new infographic to help explain the complexities behind this critically important topic.

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  • Unabated Coal Use Will Break World’s “Carbon Budget”

    While many people are traveling to Warsaw this week to participate in the international climate negotiations (COP 19), the city is also hosting another global conference: the International Coal and Climate Summit. It’s a troubling juxtaposition—coal contributes to 43 percent of global greenhouse gas emissions, making it a major driver of climate change. In fact, a new statement released by leading scientists suggests that nearly three-quarters of fossil fuel reserves—especially coal—must remain unused if the world is to limit temperature rise to 2 degrees Celsius. In other words, limiting sea level rise, extreme weather events, heat waves, and other climate impacts requires staying within world’s “carbon budget”—which doesn’t include unabated coal use.

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  • 5 Major Takeaways from the IPCC Report on Global Climate Change

    Earlier today, the Intergovernmental Panel on Climate Change (IPCC) released the Summary for Policymakers of Working Group I’s (WGI) portion of the 5th assessment report (AR5) on climate change. The report, focused on the physical science of our climate system, confirms the overwhelming scientific consensus that the world is warming and human activities are responsible.

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  • World’s Carbon Budget to Be Spent in Three Decades

    EDITOR'S NOTE 11/18/13: After this blog post was published, the IPCC updated its Summary for Policymakers. The figures in this blog post have been updated to reflect new information.

    The Intergovernmental Panel on Climate Change’s (IPCC) Fifth Assessment Report (AR5) has delivered an overwhelming consensus that climate change impacts are accelerating, fueled by human-caused emissions. We may have just about 30 years left until the world’s carbon budget is spent if we want a likely chance of limiting warming to 2 degrees C. Breaching this limit would put the world at increased risk of forest fires, coral bleaching, higher sea level rise, and other dangerous impacts.

    When Will Our Carbon Budget Run Out?

    The international community has adopted a goal for global warming not to rise above 2°C compared to pre-industrial temperatures. Scientists have devoted considerable effort to understanding what magnitude of emissions reductions are necessary to limit warming to this level, as the world faces increasingly dangerous climate change impacts with every degree of warming (see Box 1).

    IPCC AR5 summarizes the scientific literature and estimates that cumulative carbon dioxide emissions related to human activities need to be limited to 1 trillion tonnes C (1000 PgC) since the beginning of the industrial revolution if we are to have a likely chance of limiting warming to 2°C. This is “our carbon budget” – the same concept as a checking account. When we’ve spent it all, there’s no more money (and the planet’s overdraft fees will be much more significant than a bank’s small charges for bounced checks).[^1]

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