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Earth’s climate varies even without human influence but the acceleration in the changing pattern with cause and effect by/to the civilisation is a matter of concern to scientists. These patterns are lessons to understand future trends and ways and means for mitigation. The extreme weather events in almost every region of the globe involving excessive loss of human life and property are causing anxiety in society and posing challenges before scientists and planners. Cyclical variations in the Earth’s climate occur at multiple time scales, from years to decades, centuries, and millennia. Cycles at each scale are caused by a variety of physical mechanisms. In the last 65 Ma only, there have been several cycles of glacial advances and retreat, with the abrupt end of the last ice age about 11,700 years ago marking the beginning of the modern climate era and human civilization. A multidisciplinary approach in studying the Earth’s changing climate will provide a holistic view and guide us in future planning and programming.
Climate change is occurring, is caused largely by human activities, and poses significant risks for-and in many cases is already affecting-a broad range of human and natural systems. The compelling case for these conclusions is provided in Advancing the Science of Climate Change, part of a congressionally requested suite of studies known as America's Climate Choices. While noting that there is always more to learn and that the scientific process is never closed, the book shows that hypotheses about climate change are supported by multiple lines of evidence and have stood firm in the face of serious debate and careful evaluation of alternative explanations. As decision makers respond to these risks, the nation's scientific enterprise can contribute through research that improves understanding of the causes and consequences of climate change and also is useful to decision makers at the local, regional, national, and international levels. The book identifies decisions being made in 12 sectors, ranging from agriculture to transportation, to identify decisions being made in response to climate change. Advancing the Science of Climate Change calls for a single federal entity or program to coordinate a national, multidisciplinary research effort aimed at improving both understanding and responses to climate change. Seven cross-cutting research themes are identified to support this scientific enterprise. In addition, leaders of federal climate research should redouble efforts to deploy a comprehensive climate observing system, improve climate models and other analytical tools, invest in human capital, and improve linkages between research and decisions by forming partnerships with action-oriented programs.
This book is designed for first- and second-year university students (and their instructors) in earth science, environmental science, and physical geography degree programmes worldwide. The summaries at the end of each section constitute essential reading for policy makers and planners. It provides a simple but masterly account, with a minimum of equations, of how the Earth’s climate system works, of the physical processes that have given rise to the long sequence of glacial and interglacial periods of the Quaternary, and that will continue to cause the climate to evolve. Its straightforward and elegant description, with an abundance of well chosen illustrations, focuses on different time scales, and includes the most recent research in climate science by the United Nations Intergovernmental Panel on Climate Change (IPCC). It shows how it is human behaviour that will determine whether or not the present century is a turning point to a new climate, unprecedented on Earth in the last several million years.
Human-induced climate change is a serious concern, drawing increasing attention from the media, policy makers and citizens around the world. This comprehensive and thought-provoking volume explains in easily understandable language the potential effects of climate change on our planet and our lives. Climate Change: Causes, Effects and Solutions examines the latest scientific findings without any advanced technical knowledge. It goes beyond a description of changes in the physical environment to consider the broader issues of ecological, economic and human effects of climate change. The book explains: the causes and effects of climate change from a natural and human environment perspective. mitigation options and policies that could reduce the impacts of climate change. global impacts - with case studies are taken from North America, Europe, Australasia and elsewhere. Essential reading for undergraduates and general readers who want to heighten their knowledge and understanding of this important problem.
Climate Change: Evidence and Causes is a jointly produced publication of The US National Academy of Sciences and The Royal Society. Written by a UK-US team of leading climate scientists and reviewed by climate scientists and others, the publication is intended as a brief, readable reference document for decision makers, policy makers, educators, and other individuals seeking authoritative information on the some of the questions that continue to be asked. Climate Change makes clear what is well-established and where understanding is still developing. It echoes and builds upon the long history of climate-related work from both national academies, as well as on the newest climate-change assessment from the United Nations' Intergovernmental Panel on Climate Change. It touches on current areas of active debate and ongoing research, such as the link between ocean heat content and the rate of warming.
Change in climate has consequences on the biophysical environment such as changes in the start and length of the seasons, glacial retreat, decrease in Arctic sea ice extent and a rise in sea level. These changes have already had an observable impact on biodiversity at the species level, in term of phenology, distribution & populations, and ecosystem level in terms of distribution, composition & function. From a human perspective, the rapid climate change and accelerating biodiversity loss risks human security (e.g. a major change in the food chain upon which we depend, water sources may change, recede or disappear, medicines and other resources we rely on may be harder to obtain as the plants and forna they are derived from may reduce or disappear, etc.). Environmental conditions play a key role in defining the function and distribution of plants, in combination with other factors. Changes in long term environmental conditions that can be collectively coined climate change are known to have had enormous impacts on current plant diversity patterns; further impacts are expected in the future. It is predicted that climate change will remain one of the major drivers of biodiversity patterns in the future. This book is written for the specialist as well as the concerned citizen, this important book presents a comprehensive view of the newest research and thinking on climate change and biological diversity.
"Introduction to Environmental History" provides a comprehensive overview of the interplay between human societies and the natural world throughout history. This thought-provoking book explores various aspects of environmental history, ranging from the historical roots of environmentalism to global perspectives on environmental challenges. It delves into the significance of understanding environmental history and offers insights into the current environmental issues that threaten our planet. Furthermore, it presents solutions and recommendations for sustainable practices, conservation efforts, and the future of environmental history. The book begins with an introduction to the field of environmental history, highlighting its importance in understanding the dynamic relationship between human beings and their environment. It examines the historical roots of environmentalism, tracing the practices and attitudes towards the environment in pre-industrial societies and the profound impact of the Industrial Revolution. A global perspective is then explored, with dedicated chapters focusing on different regions of the world, including Asia, Europe, North America, Africa, Australia and Oceania, South America, and even Antarctica. This broad view highlights the diverse environmental challenges faced by various cultures and societies throughout history. The book further delves into environmental challenges within the four spheres of the Earth: lithosphere, hydrosphere, atmosphere, and biosphere. It examines issues such as deforestation, land degradation, water scarcity, water pollution, climate change, air pollution, biodiversity loss, and endangered species. In the subsequent chapters, the book delves into the current environmental challenges that humanity confronts today. It explores the impacts of climate change, pollution on human health, biodiversity loss, population growth, food insecurity, poverty, environmental degradation's health risks, oceans acidification, depletion of natural resources, water scarcity, and the consequences of environmental disasters. To address these challenges, the book presents potential solutions, emphasizing sustainable practices, renewable energy sources, and conservation efforts. It highlights the benefits of adopting these measures and calls for collective action to safeguard the planet for future generations. The future of environmental history is also contemplated, reflecting on the past, examining the present, and providing recommendations for future action. It explores the role of environmentalists and various events that promote environmental awareness and action. Lastly, the book includes a section on environmental disasters, shedding light on the detrimental impacts of activities such as mining, deforestation, natural disasters, water pollution, plastic pollution, oil spills, forest fires, industrial pollution, smog, nuclear accidents, and transportation-related environmental challenges. "Introduction to Environmental History" serves as a valuable resource for students, scholars, and anyone interested in understanding the historical context of our environmental challenges and finding sustainable solutions to create a better future. It offers a comprehensive exploration of environmental history, the current state of our planet, and the urgent need for action to protect and preserve our environment.
A review of the current status of air pollution and climate change (CC) in the United States from a perspective of their impacts on forest ecosystems is provided. Ambient ozone (O3) and nitrogen (N) deposition have important and widespread ecological impacts in U.S. forests. Effects of sulphurous (S) air pollutants and other trace pollutants have significant ecological importance only at much smaller geographic scales. Complex interactive effects of air pollution and CC for selected future CC scenarios are reviewed. In addition, simulations of past, present, and future hydrologic, nutrient, and growth changes caused by interactive effects of air pollution and CC are described for two U.S. forest ecosystems. Impacts of O3, N deposition, and CC on growth and hydrology of mixed conifer forests in the San Bernardino Mountains in southern California were projected with the DayCent model. Effects of N deposition, CO2 fertilization, N deposition, and CC on northern hardwood forests at the Hubbard Brook Experimental Forest in New Hampshire were simulated with the PnET-BGC model. Projected changes in these forests can influence the provision of ecosystem services such as C sequestration and water supply. The extent of these effects will vary depending on the future intensity and extent of CC, air pollutant emission levels, the distribution of air pollution, and other factors such as drought, pest outbreaks, fire, etc. Our chapter ends with research and management recommendations intended to increase our ability to cope with uncertainties related to the future interactive effects of multiple air pollutants, atmospheric deposition, CC, and other biotic and abiotic stressors.