O'Vert Dose: How will global warming change our lives? Left

If the outside temperature changes by half a degree, you won’t even feel it. Such a small change is almost imperceptible to human senses. It can mean the difference between wearing a jacket or not in your everyday life, half a degree of global warming is very serious.

It’s a problem that the babies you meet on the street will have to live with, a problem that threatens the infrastructure where we live, the agriculture that feeds us, that can eliminate us in many ways, a problem that must be faced without further ado.

Because if inaction continues, here are the disastrous consequences that global warming will have on our environment, our society, and the geography of our world. And then what would our world look like if we kept this warming to less than 1.5 degrees Celsius? What if we fail?

Here are the expected consequences on the environment

Extreme weather events

In humid areas, increased rainfall will lead to the multiplication and intensification of floods, which in addition to being deadly, seriously affect infrastructure and agriculture. In the drier areas, there will be aridification during periods of drought, a reduction in access to water, a decrease in rainfall and the agony of agricultural activity.

Forest fires will continue to multiply, taking with them a multitude of ecosystem components and inhibiting the human activities that depend on them. Other meteorological phenomena will disturb the conditions of human life, and it is either their frequency which will increase, or their violence, or both at the same time.

An unbearable heat wave

When it gets even hotter, and the air is saturated with water vapour, we won’t be able to sweat normally, and therefore our body won’t be able to cool down naturally due to sweat. And with the earth constantly warming up and the water running out, the periods of heat waves are becoming longer and longer, more and more severe, more and more frequent, but above all according to the figures, more more deadly every year.

Slow-melting ice cream

Ice caps such as Greenland and Antarctica will melt, and the extra water that was once contained in these glaciers will cause sea levels to rise, which will then flow into the oceans, thereby flooding coastal regions. This also means that in winter, the rain will flow directly into the oceans, and that certain territories risk being swallowed up by the waters.

In addition, increases in sea surface temperature, ocean acidification, and changes in currents and winds will significantly alter the physical and biological composition of the oceans. Changes in temperature and ocean circulation are likely to alter the geographic distribution of fish.

It could also allow alien species to thrive in areas where they previously could not survive, and acidification of waters will impact various calcium carbonate-secreting organisms. These changes will have inevitable impacts on coastal and marine ecosystems, with major socio-economic consequences for many regions.

Disappearance of plant and animal species

Global warming is happening so fast that many plant and animal species are struggling to cope. There is clear evidence that biodiversity is already responding to climate change and will continue to do so. Direct impacts include changes in phenology, i.e. the behavior and life cycles of animal and plant species, in the abundance and distribution of species, in the composition of communities, in the structure of habitats and in ecosystem processes in general.

Global warming obviously also has indirect effects on biodiversity by modifying the use of land and all other resources. These impacts can be more damaging than direct ones due to their scale, range and speed. They will include habitat fragmentation and loss, overexploitation, air, water and soil pollution, and the spread of invasive species.

They will further reduce the resilience of ecosystems to climate change and their ability to provide essential services, such as climate regulation, food, clean air and water, and flood or erosion control. These impacts can only lead to the extinction of a multitude of plant and animal species, most of which were already present on Earth long before us.

Some consequences territoryales inevitable

Morocco and the Mediterranean region

The Mediterranean region has suffered major impacts in recent decades due to decreasing rainfall and increasing temperatures, and these impacts are expected to worsen as the climate continues to change. They will mainly manifest themselves in reduced water availability and crop yields, increased risk of drought, loss of biodiversity, and increased forest fires and heat waves.

Increasing irrigation efficiency in agriculture can reduce water withdrawals to some extent, but will not be enough to compensate for climate-induced water stress. In addition, the hydropower sector will be increasingly impacted by declining water availability and rising energy demand, while the tourism industry will face less favorable conditions. in summer. Environmental flows, which are important for the proper maintenance of aquatic ecosystems, will be threatened both by the effects of climate change and by socio-economic developments.

Cities that do not measure up

Cities amplify and intensify weather events, they are warmer than the places around them, and they tend to be more vulnerable to extreme weather events due to their dense population.

In recent years, increasing urban land use and urban population growth have, in many places, increased the exposure of cities to different climate impacts such as heat waves, floods and droughts.

In the future, the continued occupation of urban land, the growth and concentration of the population in cities, as well as the aging of the latter, will contribute to further increasing the vulnerability of cities to climate change. Urban planning, urban management and the improvement of green infrastructure can partly remedy these effects.

Mountains will no longer have white tops

The temperature increase is particularly significant in many mountainous regions, where loss of glacier mass, reduction of snow cover, thawing of permafrost and change in precipitation patterns have been observed. This could lead to increased frequency and intensity of flooding in some mountainous areas, which could impact people and the built environment.

Other expected impacts include reduced winter tourism, reduced hydropower energy potential, displacement of vegetation zones and significant loss of biodiversity. Plant and animal species living near mountain peaks are at risk of extinction due to the inability to migrate to higher regions. The retreat of the vast majority of glaciers also affects water availability in downstream regions.

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