Question

Observation of global warming

Answer 1

here is ur answer dear

Since 1880, the average global temperature has risen about 0.8°C (1.4°F), resulting in many of the weather extremes and climatic changes we see today. However, the most comprehensive CO2 study to dateby the Global Carbon Project, published by leading scientists in the journal Nature Geoscience, says that the world is now firmly on course for the worst-case scenario in terms of climate change, with average global temperatures rising by up to 6°C (11.5°F) by the end of the century (PwC study) (see also). Such a temperature rise, which would be much higher near the poles (see also), would have devastating   andirreversible consequences for the Earth, making large parts of the planet uninhabitable and threatening the basis of human civilization. As National Geographicstates, "At six degrees, the oceans could be marine wastelands, the deserts could march across continents, and natural disasters could become common events. The world’s great cities could be flooded and abandoned. This could be 'the doomsday scenario'.” The world is close to reaching tipping points that will make it irreversibly hotter, making this decade critical in efforts to contain global warming

hope it helps u

Answer 2

As part of the Paris Agreement on climate change, the international community committed in 2015 to limit rising global temperatures to “well below” 2C by the end of the 21st century and to “pursue efforts to limit the temperature increase even further to 1.5C”.

However, these global temperature targets mask a lot of regional variation that occurs as the Earth warms. For example, land warms faster than oceans, high-latitude areas faster than the tropics, and inland areas faster than coastal regions.

Furthermore, global human population is concentrated in specific regions of the planet.

Here, Carbon Brief analyses how much warming people will actually experience where they live, both today and under future warming scenarios.

The warming experienced by people is typically higher than the global average warming. In a world where warming is limited to “well below” 2C about 14% of the population will still experience warming exceeding 2C. In the worst-case scenario of continued growth in emissions, about 44% of the population experiences warming over 5C – and 7% over 6C – in 2100.