päästöjenpoisto

Päästöjenpoisto, also known as carbon dioxide removal (CDR), refers to a range of techniques and approaches aimed at removing carbon dioxide (CO2) from the Earth's atmosphere and storing it durably. The primary goal of these methods is to mitigate climate change by reducing the overall concentration of greenhouse gases, particularly CO2, which is a major contributor to global warming.

Various approaches exist for achieving päästöjenpoisto. Some are nature-based, such as afforestation and reforestation, which involve planting new trees or restoring existing forests. These natural sinks absorb CO2 through photosynthesis. Soil carbon sequestration is another nature-based approach, focusing on enhancing the capacity of soils to store carbon. Other methods are technological. Direct air capture (DAC) technologies involve using chemical processes to extract CO2 directly from the ambient air, which can then be stored underground or utilized. Enhanced weathering, a process that accelerates the natural geological process of mineral breakdown, can also capture CO2. Bioenergy with carbon capture and storage (BECCS) combines the burning of biomass for energy with the capture and storage of the resulting CO2 emissions.

The effectiveness, scalability, cost, and potential side effects of different päästöjenpoisto methods are subjects of ongoing research and debate. While considered a potentially crucial tool for achieving climate targets, reliance solely on removal without significant emissions reductions is generally not seen as a viable solution. Päästöjenpoisto is often discussed in conjunction with emissions reduction strategies as part of a broader climate change mitigation portfolio.

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