About uslocationPrivacy policyInquiriesLink Home environment Material Living environment Living environment Let's think together about what is happening on the "Spaceship Earth" and what kind of changes are happening in our daily lives. Many environmental problems such as ozone depletion, acid rain, global warming, deforestation, soil deterioration, water pollution, and chemical pollution are occurring on the earth. I understand that it is a global environmental problem, but do you think that there is no such environmental problem in the area around us where we live? That's not true. If nothing is done, it will definitely affect our lives. This time, let's study ozone layer depletion, acid rain, and global warming as warnings from the sky. Ozone depletion CFCs, which are widely used in refrigerators, sprays, and air conditioners, slowly rise when released into the atmosphere, destroying the ozone layer, which mitigates ultraviolet rays (UV). When the ozone layer is destroyed, harmful ultraviolet rays are spilled onto the surface of the earth, and there are concerns about human health hazards such as skin cancer and cataracts and adverse effects on the ecosystem. The ozone hole is being observed on a large scale every year. The ozone layer is the relatively lower part of the stratosphere 15 to 20 km above the ground where the ozone concentration is high. What we have to do is to avoid using CFCs as much as possible and to ask a contractor who properly disposes of CFC-containing waste. Change in ozone hole area Annual extremum of ozone hole area from 1979 to 1998. The area of the ozone hole is defined as the area of the region south of 45 ° S where the total amount of ozone is 220 m_atm_cm or less. Created after comparing the TOMS data provided by NASA with the observed values by the Dobson meter. Source: Japan Meteorological Agency acid rain Acid rain produces sulfur oxides (SOx) and (NOx) by burning fossil fuels such as coal and petroleum. This chemical substance reacts in the atmosphere and changes into sulfate ion and nitrate ion. Rain that takes in these and shows acidity with a pH of 5.6 or less is called acid rain (acid fog). The national average pH value of rain is 4.8 to 4.9, and acid rain has been confirmed nationwide. global warming As the concentration of greenhouse gases (such as carbon dioxide) in the atmosphere increases, the average temperature of the earth rises, causing global climate change and rising sea levels. Such warming causes major changes in the global climate mechanism and has a great impact on natural ecosystems and agricultural production. Furthermore, assuming that the ongoing increase in greenhouse gases continues until the end of the 21st century (BaU scenario), it is predicted that the average global temperature will rise by about 2 degrees and the sea level will rise by about 50 cm (maximum 1 m). I am. In other words, the coastal areas where the important bases of our lives are concentrated will be submerged. Let's calculate the amount of CO2 we excrete item Usage (* Emissions) coefficient CO2 emissions (kg) Amount (yen) Gasoline (light oil) L × 0.64 = = kerosene L × 0.69 = = Electrical kwh × 0.12 = = gas Cubic meter × 0.64 = = Water crew Cubic meter × 0.16 = = Combustible waste ※ kg × 0.24 = = Non-burnable garbage ※ kg × 0.24 = = Aluminum cans ※ Book × 0.05 = = Steel can ※ Book × 0.01 = = bottle ※ Book × 0.03 = = total Copyright (c) Heisei Riken Co., Ltd. All Rights Reserved.