Lecture

Impact Assessment: Life Cycle Impacts

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Description

This lecture introduces the IMPACT World+ framework for evaluating life cycle impacts, focusing on a wide range of impact categories such as climate change, ozone layer depletion, resource use, acidification, eutrophication, and more. The framework includes midpoint level indicators and damage level indicators, covering areas of protection and concern. It also discusses impact profiles, including short-term and long-term climate change, human health impacts, and ecosystem quality. The lecture explains how to include regionalization in life cycle impact assessment, using substance-specific characterization factors to calculate impact scores. In conclusion, IMPACT World+ provides a comprehensive approach to assessing environmental impacts, incorporating factors like spatial variability and uncertainty.

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Related concepts (32)

Environmental impact assessment

Environmental Impact assessment (EIA) is the assessment of the environmental consequences of a plan, policy, program, or actual projects prior to the decision to move forward with the proposed action. In this context, the term "environmental impact assessment" is usually used when applied to actual projects by individuals or companies and the term "strategic environmental assessment" (SEA) applies to policies, plans and programmes most often proposed by organs of state.

Environmental issues

Environmental issues are disruptions in the usual function of ecosystems. Further, these issues can be caused by humans (human impact on the environment) or they can be natural. These issues are considered serious when the ecosystem cannot recover in the present situation, and catastrophic if the ecosystem is projected to certainly collapse. Environmental protection is the practice of protecting the natural environment on the individual, organizational or governmental levels, for the benefit of both the environment and humans.

Ozone depletion

Ozone depletion consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere, and a much larger springtime decrease in stratospheric ozone (the ozone layer) around Earth's polar regions. The latter phenomenon is referred to as the ozone hole. There are also springtime polar tropospheric ozone depletion events in addition to these stratospheric events.

Climate change denial

Climate change denial or global warming denial is dismissal or unwarranted doubt that contradicts the scientific consensus on climate change. Those promoting denial commonly use rhetorical tactics to give the appearance of a scientific controversy where there is none. Climate change denial includes doubts to the extent of how much climate change is caused by humans, its effects on nature and human society, and the potential of adaptation to global warming by human actions.

Environmental protection

Environmental protection is the practice of protecting the natural environment by individuals, groups and governments. Its objectives are to conserve natural resources and the existing natural environment and, where it is possible, to repair damage and reverse trends. Due to the pressures of overconsumption, population growth and technology, the biophysical environment is being degraded, sometimes permanently. This has been recognized, and governments have begun placing restraints on activities that cause environmental degradation.

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