Basic Climate Science

Earth’s global mean temperature would be -18C were it not for Earth’s atmosphere blanketing and warming the planet to +15C, creating conditions in which humans have thrived over the last 10,000 years. But an overabundance of greenhouse gases emitted from industrial activities has increased the atmosphere’s global warming effect, affecting climate, biodiversity and human progress.…

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Future Global Warming

Global warming, caused by 250 years of anthropogenic GHG emissions, has now reached 1.2C. It is manifesting in climate change, melting glaciers, wildfires, floods and droughts. Tipping points are imminent that are expected to accelerate warming to 3C or more before the end of the century, with unpredictable results, creating environmental, social and economic mayhem.…

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Global Climate Agreements

2015 was a pivotal year for global agreement on climate action. The Sendai Framework for Disaster Risk Reduction was endorsed by the UN General Assembly, 196 countries signed the Paris Agreement to limit global warming to no more than 2C, and 193 countries agreed to 17 sustainable development goals, including SDG 13 for climate action.…

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Global and NZ Mitigation

To meet the Paris Agreement, global emissions must reduce by 45% by 2030 compared to 2010 levels and reach net zero by 2050. Each country has a Nationally Determined Contribution, ideally representing its fair share of change. The Climate Change Commission has advised the New Zealand Government on GHG budgets, policy and a new NDC.…

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Global and NZ Adaptation

SDG 13 aims to increase the number of countries with climate change adaptation policies, strategies and plans. The New Zealand Government has published a Climate Change Risk Assessment as a first step toward developing a National Adaptation Plan. It has also introduced financial sector legislation to make climate-related risk reporting mandatory for most large entities.…

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Global and NZ Risk Sharing

Climate risk disproportionately affects the most exposed and vulnerable; therefore, sharing climate risk is a matter of justice and a just transition. A key goal is the mobilisation of US$100 billion annually from developed to less developed nations. Also, the correlation between climate change vulnerability and geopolitical conflict makes climate change a global security concern.…

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