The warming of 1 ° C is too much or very little
From the past, we know that the global climate and the average temperature of the Earth have changed several times. Decreasing or rising temperatures by 1 ° C has been repeated several times over the past 2000 years, and this has affected life in Europe.
At the beginning of our era, the climate was similar to the current climate.
range 1000-1300 r. increase about 1 ° C
The period from 1000 to 1300 is also referred to as a medium warm period, when there is a more pronounced warming. The average annual air temperature in Europe was about 1 ° C higher than at present. Vinech, which has been harvested in Central Europe and England, is now successfully grown in Germany, Lithuania and Scotland.
range 100-450 r. decrease by 1 ° C
Small Ice Age – Gradual cooling. In the first half of the 14th century, grain is no longer cultivated in Iceland, and vineyards in England. Between the years 1400-1850, there was again a significant cooling. The winters were stiff, flying rainy. In Europe, during this period, the average annual temperature was 1 ° C lower compared to the present. After a series of years of cold and damp weather, food crises emerged throughout Europe. Various epidemics have emerged. In southern Italy, olive trees were destroyed.
18th century – the beginning of the Industrial Revolution
1824 – French polyhistor Jean-Baptiste Fourier discovered the natural greenhouse effect of the atmosphere, later described the artificial greenhouse effect
range 100 ° increase about 1 ° C
Since the second half of the 19th century, a warming period has begun with a more pronounced increase in temperatures, especially in the last twenty years. This warm period is, according to many climatologists, partly or totally due to the growing greenhouse effect of the atmosphere. In 100 years (1906-2005), the average annual global air temperature increased by 0.7 ° C. The value of this growth in Slovakia is even more pronounced (in the 20th century, the average annual air temperature increases by 1.1 ° C).
in the range of 100 years (2000-2100 years) – an increase about 3 to 5 ° C
As we see from the historical records, the change of 1 ° C is normal and the p can cope with it, the problem is with faster changes. Another problem is that nobody knows at this time whether the rise in the average temperature of the Earth will only grow or oscillate as it did in the last 2000 years of the human past.
Biologists predict that the average air temperature increase of 1 ° C over the centuries is not a big issue for ecosystems, it can be adapted to the natural way. However, warming up to 2 ° C can cause significant instability of ecosystems, which may have negative consequences for some of the consequences (widespread disease and pests, extinction of important species, etc.). As is shown today, human activities are also adapting to rapidly changing climatic conditions. While it is true that people live and prosper in substantially different climatic conditions, the whole technical infrastructure, agriculture, water resources, transport, housing and lifestyle have been adapted and developed over the centuries under the climatic conditions, including extreme weather conditions (at least 30 years). We can observe almost daily that only an increase in the risk of severe rainfall or droughts of 10% compared to the past causes unrivalled problems because flood protection, as well as irrigation and water supply systems, have been addressed under the conditions of past climatic conditions. Even here, however, richer landscapes deal with this problem more easily than the poorer countries and with a lower level of application of scientific knowledge in practice.