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Report Series Purpose and Introduction to Climate Science
Climate Change, Coming Soon to A Court Near YouâReport One
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eBook - ePub
Report Series Purpose and Introduction to Climate Science
Climate Change, Coming Soon to A Court Near YouâReport One
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Ă propos de ce livre
Climate change is the defining challenge of our time. Without urgent climate action, humanity faces a world that cannot sustain civilization as we know it. People around the globe are demanding action, some with climate litigation. This four-part report series recognizes the inevitability of increased litigation in the era of climate change and judges need a tool kit to respond. Report One explains how judges from Asia and the Pacific contribute to climate governance, along with the Asian Development Bank's rationale for producing this report series. It guides readers through some of the basics about climate change: What is causing it? How do we know? How bad might it get? What do we do about it?
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Sujet
Biological SciencesSous-sujet
Global Warming & Climate ChangePART ONE
REPORT SERIES RATIONALE
I. An Existential Threat in the 21st Century
âClimate change is, quite simply, an existential threat for most life on the planetâincluding, and especially, the life of humankind.â1 And humans are causing it.
In its 4.5-billion-year history, Earth has been far hotter than it is now.2 But humans did not exist in the age of dinosaurs, and neither did most of the species living around us. While climate change will not end our planet, it risks making Earth unrecognizable and inhospitable to current life. Our civilization and ecosystems emerged during the Holocene, which started around 11,700 years ago when Earth warmed after the last glacial maximum and the ice sheets covering North America and Europe retreated.3 The average temperature and stability of the Holocene allowed modern civilization to flourish.4 In short, modern civilization and agriculture are adapted to the Holocene climate.5
The Industrial Revolutionâs steam engines hailed the beginning of large-scale fossil fuel use. Unfortunately, the by-product of burning fossil fuels for energy productionâespecially coal, oil, and gasâare greenhouse gas (GHG) emissions.6 GHGs occur naturally in Earthâs atmosphere and are essential for regulating the global climate.7 But artificially increasing atmospheric GHG concentrations by burning fossil fuels is warming Earth.8 (This report discusses climate science further in Part Two: Introduction to Climate Change.)
Contemporary global discussion about climate change focuses on human-caused global warming, which is elevating temperatures compared with the preindustrial temperature average of the Holoceneâanthropogenic climate change. Preindustrial temperatures refer to global temperatures before large-scale industrial activity around 1750.9 However, the Intergovernmental Panel on Climate Change (IPCC) uses the 1850â1900 period as its preindustrial temperature baseline.10
A warming planet sets in motion chain reactions that will change and destabilize the climate in which humans evolved to thrive.11 Humans cannot separate themselves from Earthâs natural environment. We are innately connected to it, relying on Earth for air, water, food, and energyâthe fundamental necessities of life. Climate change threatens our capacity to access these necessities and, therefore, undermines our enjoyment of human rights.12 Indeed, climate change is such a threat to humanity that the Bulletin of the Atomic Scientists lists it as one of the two existential dangers to humanityâthe other is nuclear war.13
II. Climate Change Impacts in 2020
Climate change is not a future eventâwe live with it now. Human activity has already caused a 1°C warming above the preindustrial mean temperature.14 This 1°C shift has triggered increasingly frequent and intense extreme weather events, rising sea levels, and diminishing Arctic sea ice.15 Across Asia and the Pacific, populations endure severe weather, heat stress, flooding, droughts, and sea level rise.16 Impacts are sudden onset (severe weather events) or slow onset (rising sea levels and melting glaciers).
The IPCC has warned that based on current emissions and pledges, global temperatures will increase to 1.5°C above preindustrial temperatures between 2030 and 2052, bringing more intense impacts (footnote 14). Around 30% of people currently live with deadly heat events.17 By 2100, lethal heat waves will affect up to 75% of the worldâs population. (This report summarizes the impacts of 1.5°C and 2°C of warming in Table 4: Summary of Projected Risks at 1.5°C and 2°C.)
Climate change shapes health in various ways. Beyond the obvious impacts of extreme weather events, factors such as heat, air quality, food and water security, and vector distribution (diseases) impair health.18 Conflict- and climate-induced migration also harm physical and mental health. The World Health Organization (WHO) estimates that climate change causes 150,000 deaths annually, including deaths from extreme weather.19 By 2030, WHO anticipates that climate change-associated heat, malaria and dengue fever, coastal flooding, and undernutrition will kill 250,000 people annually.20 More recent studies label this estimate conservative because it does not account for deaths from climate-sensitive health outcomes or disrupted health services (footnote 18). For example, less food could contribute to around 529,000 deaths by 2050 (footnote 18). The more startling fact is that air pollutionâsignificantly contributed to by fossil fuelsâkills around 7 million annually in 2020.21 Four million of these pollution-related deaths occur in Asia and the Pacific.22
III. Climate Change and the Coronavirus Disease
In 2020, the world grappled with the devastating impacts of the coronavirus disease (COVID-19). By 28 October 2020, there were around 43.8 million confirmed COVID-19 infections and more than 1 million deaths.23 Millions more had suffered from hunger and economic devastation as the world ground to a halt to contain infections and keep people safe. Widespread and sudden community lockdowns were akin to âwar-timeâ responses.24
Many initially lauded the cleaner environment resulting from the COVID-19 global economic shutdown. Social media feeds filled with news that Delhiâs air had cleared and that satellites recorded lower atmospheric concentrations of pollutants.25 History, however, teaches us that these gains may not be sustained. The COVID-19 pandemic is not the first time that an economic downturn has shrunk fossil fuel emissions. Reduced fossil fuel and cement production during the 2009 global financial crisis saw carbon dioxide (CO2) emissions drop by 1.4%.26 By 2010, however, global CO2 emissions were growing faster than ever (footnote 26). A boom in fossil fuel emissions during recovery from an economic crash is not limited to the 2009 financial crisis. The Economist tracked emission spikes after the oil crises of the 1970s, the fall of the Union of Soviet Socialist Republics, and the Asian financial crisis (footnote 26).
COVID-19 is also affecting climate action and green energy expansion. The Secretariat of the United Nations Framework Convention on Climate Change (UNFCCC) has postponed the 26th Session of the Conference of the Parties scheduled for late 2020 and the midyear meetings leading up to it. COVID-19 has also slowed down the installation of solar and wind energy in 2020.27
When the COVID-19 pandemic passes, governments will redirect their attention to rebuilding their economies. Their choice of investments will be critical to the planetâs future. Rather than investing in high-emitting industries, governments could turn their focus to supporting green options. Governments might also opt to learn from the current crisis and see that their constituents are willing to contribute to global action because this issue affects every living thing.
Without urgent action, the effects of climate change will intensify over the next 30â50 years and beyond.28 As Earthâs climate evolves, the pace of climate change will get fa...
Table des matiĂšres
- Front Cover
- Title Page
- Copyright Page
- Contents
- Tables and Figures
- Forewords
- Preface
- Acknowledgments
- Abbreviations
- Executive Summary
- Part One. Report Series Rationale
- Part Two. Introduction to Climate Change
- Part Three. Conclusion
- Back Cover
Normes de citation pour Report Series Purpose and Introduction to Climate Science
APA 6 Citation
[author missing]. (2020). Report Series Purpose and Introduction to Climate Science ([edition unavailable]). Asian Development Bank. Retrieved from https://www.perlego.com/book/2605463/report-series-purpose-and-introduction-to-climate-science-climate-change-coming-soon-to-a-court-near-youreport-one-pdf (Original work published 2020)
Chicago Citation
[author missing]. (2020) 2020. Report Series Purpose and Introduction to Climate Science. [Edition unavailable]. Asian Development Bank. https://www.perlego.com/book/2605463/report-series-purpose-and-introduction-to-climate-science-climate-change-coming-soon-to-a-court-near-youreport-one-pdf.
Harvard Citation
[author missing] (2020) Report Series Purpose and Introduction to Climate Science. [edition unavailable]. Asian Development Bank. Available at: https://www.perlego.com/book/2605463/report-series-purpose-and-introduction-to-climate-science-climate-change-coming-soon-to-a-court-near-youreport-one-pdf (Accessed: 15 October 2022).
MLA 7 Citation
[author missing]. Report Series Purpose and Introduction to Climate Science. [edition unavailable]. Asian Development Bank, 2020. Web. 15 Oct. 2022.