Factors influencing climate change
What are the main threats of climate change?
c. Human activities have affected the land, oceans, and atmosphere, and these changes have altered global weather patterns. The burning of fossil fuels, the release of chemicals into the atmosphere, the reduction of forest cover, and the rapid expansion of agriculture, development, and industrial activities are releasing carbon dioxide into the atmosphere and are changing the balance of the climate system.
d. Mounting evidence shows that changes in many physical and biological systems are related to human-caused global warming. Some changes in human activities have diminished the capacity of the environment to support diverse species and have substantially reduced ecosystem biodiversity and ecological resilience.
e. e. Scientists and economists predict that there will be both positive and negative consequences of global climate change. If warming exceeds 2 to 3°C (3.6 to 5.4°F) over the next century, the negative consequences are likely to be much greater than the positive consequences.
What are the causes and consequences of climate change?
Climate change is the consequence of global warming. That is, the general increase in the planet's temperature, which is caused by the toxic emissions generated by human activities. Are we aware of the impact it has on our lives?
What are the main threats of climate change?
Heat waves, floods, storms and water stress are the climate change threats most frequently reported by the cities themselves, but not necessarily the most relevant according to scientific projections.
How do climate changes influence the environment?
At the environmental level, climate change causes a sudden impact in the form of natural disasters, such as floods or earthquakes, but it also has a slow impact in the form of droughts or rising ocean levels, causing human displacement.
5 human actions that alter the climate
The environmental impact of climate change increases the frequency and intensity of extreme weather events, such as heat waves, droughts and floods, as well as habitat degradation and species extinction. This impact is expected to become even more severe.
In Europe, the largest temperature increases are observed in the southern and arctic regions. Precipitation is decreasing in southern Europe and increasing in the north and northwest. These changes affect natural ecosystems, human health and water resources. In economic sectors such as forestry, agriculture, tourism and construction, where the consequences will be mostly negative.
At the environmental level, climate change causes a sudden impact in the form of natural disasters, such as floods or earthquakes, but it also causes a slow impact, in the form of droughts or rising ocean levels, causing human displacement.
Human activities influencing climate change
Temperatures in the 1880s and 1980s, compared to the average between 1951 and 1980. The interior of Brazil does not have much data available in the 19th century, which generates more uncertainty, but in the areas covered by the measurements the differences are very visible. The graph is an extract from a global estimate produced by NASA.Climate change in Brazil is due to greenhouse gases emitted by human activities. Brazil's contribution to greenhouse gas emissions per person are higher than the global average. Most countries that emit large amounts of these gases do so through the burning of gasoline in cars and trucks and the use of natural gas and coal in power plants. However, Brazil's emissions come from deforestation of the Amazon rainforest (which can no longer absorb carbon dioxide) and from large cattle ranches, where cows produce methane.
The greenhouse effect of excess carbon dioxide and methane makes the Amazon rainforest hotter and drier, resulting in more forest fires in Brazil. Parts of the rainforest are at risk of becoming savannah.
What are the phenomena that define climate change?
If there is an increase in temperature greater than 1.5°C, the world will experience extreme heat, periods of prolonged rainfall, floods, droughts and, in general, increasingly adverse atmospheric phenomena. This will affect the world population, with frequent disasters, food shortages, proliferation of diseases; in addition to the effects on nature with an imbalance of ecosystems that will endanger biodiversity, with the extinction of species of flora and fauna, loss of habitats and therefore the survival capacity of numerous species unable to adapt their needs to the new environmental conditions.
A nearby example is Hurricane Dorian, which has been classified as the strongest hurricane ever recorded in the Bahamas. In addition to these episodes, which are the subject of media coverage due to their deadly and economic consequences, compromising the development of countries, we find evidence of climate change resulting from an increase in global temperature.
