Summarizes and integrates more than a decade of atmospheric chemistry research, carried out under the auspices of the International Global Atmospheric Chemistry (IGAC) Project of the International Geosphere-Biosphere Programme (IGBP).
Our world is changing at an accelerating rate. The global human population has grown from 6.1 billion to 7.1 billion in the last 15 years and is projected to reach 11.2 billion by the end of the century. The distribution of humans across the globe has also shifted, with more than 50 percent of the global population now living in urban areas, compared to 29 percent in 1950. Along with these trends, increasing energy demands, expanding industrial activities, and intensification of agricultural activities worldwide have in turn led to changes in emissions that have altered the composition of the atmosphere. These changes have led to major challenges for society, including deleterious impacts on climate, human and ecosystem health. Climate change is one of the greatest environmental challenges facing society today. Air pollution is a major threat to human health, as one out of eight deaths globally is caused by air pollution. And, future food production and global food security are vulnerable to both global change and air pollution. Atmospheric chemistry research is a key part of understanding and responding to these challenges. The Future of Atmospheric Chemistry Research: Remembering Yesterday, Understanding Today, Anticipating Tomorrow summarizes the rationale and need for supporting a comprehensive U.S. research program in atmospheric chemistry; comments on the broad trends in laboratory, field, satellite, and modeling studies of atmospheric chemistry; determines the priority areas of research for advancing the basic science of atmospheric chemistry; and identifies the highest priority needs for improvements in the research infrastructure to address those priority research topics. This report describes the scientific advances over the past decade in six core areas of atmospheric chemistry: emissions, chemical transformation, oxidants, atmospheric dynamics and circulation, aerosol particles and clouds, and biogeochemical cycles and deposition. This material was developed for the NSF's Atmospheric Chemistry Program; however, the findings will be of interest to other agencies and programs that support atmospheric chemistry research.
Major international, interdisciplinary research programmes are now underway to increase our understanding of how the Earth System operates and how it is changing through the effects of human activities. Although understanding and predictive capacity are still limited, scientists already agree that significant global changes must be expected in the next 50 years that will affect the capacity of the Earth to sustain life. Governments, business and industry have, therefore, come to recognize that scientific knowledge about the changing global environment - as yet incomplete but rapidly evolving - is becoming indispensable for wise long-term policy making, the goal being to design preventive, adaptive and remedial measures. Thus global change science and policy making are engaged in a process of forming a new partnership that is taking shape as further insights evolve. Effective continuous interactions between the partners requires mutual understanding: decision-makers need to understand the unique potential but also the limitations of the results of scientific research in progress while scientists must take into account the priorities and constraints of policy-makers in designing and implementing policies that will promote long-term sustainability of life on this planet. This book contributes in a unique manner to this mutual understanding: It gives an overview of the ongoing relevant research focusing on the two major international programmes, the International Geosphere-Biosphere Programme and the World Climate Research Programme. These are described in terms understandable to the interested lay reader. The results of the latest review of the Intergovernmental Panel on Climate Change (IPCC) are included. This is followed by an analysis of the response process that is in progress with respect to governments - singly and multilaterally - by business and industry and by public interest groups. This process is leading to interactive structures, assessment procedures and legislation, nationally and internationally. Business and industry are changing from mere watchfulness to recognition of new opportunities for products and processes. Six interviews with prominent figures from business and government circles in the Netherlands provide a vivid illustration of the questions at issue. The appendices provide overviews of methods for incorporating the results of global change science into policy-making and development of long lasting projects. Adaptation to climate change serves as an example. Thus, for the first time, one book describes both ongoing research work in global change and the response processes that the research results are evoking. It is of interest to all stake-holders in the scientific community as well as to decision-makers in industry, business and government.