Global warming refers to the long-term rise in the average temperature of the Earth's climate system, primarily due to human-caused emissions of greenhouse gases. The term is often used interchangeably with climate change, though climate change also includes impacts like changes in precipitation patterns. Most of the warming observed over the past 50 years is unprecedented in historical records dating back thousands to millions of years. While global warming increases temperatures worldwide, its effects vary by region, with some areas like the Arctic warming almost twice as fast as others. Individual record-breaking years attract attention but the long-term temperature trend is a more important indicator of climate change.

1. Global Warming
its consequences and possible steps to be taken.
Borcila Cristian-Eduard

2. Global Warming
 Global warming is a long-term rise in the average temperature of the Earth's climate system, an aspect of climate change shown by
temperature measurements and by multiple effects of the warming.[2][3]
The term commonly refers to the mainly human-caused
observed warming since pre-industrial times and its projected continuation,[4]
though there were also much earlier periods of global
warming.[5]
In the modern context the terms global warming and climate change are commonly used interchangeably,[6]
but climate
change includes both global warming and its effects, such as changes to precipitation and impacts that differ by region.[7][8]
Many of
the observed warming changes since the 1950s are unprecedented in the instrumental temperature record, and in historical and
paleoclimate proxy records of climate change over thousands to millions of years.

3. Regional trends and short-term
fluctuations
 Global warming refers to global averages. It is not uniform around the world: effects can vary by
region.[41]
Since 1979, global average land temperatures have increased about twice as fast as global
average ocean temperatures (0.25 °C per decade against 0.13 °C per decade).[42]
Ocean
temperatures increase more slowly than land temperatures because of the larger heat capacityof the
oceans and because oceans lose more heat by evaporation.[43]
Since the beginning of industrialisation
in the 18th century, the temperature difference between the hemispheres has increased due to
melting of sea ice and snow in the North, and because there is more land in the Northern Hemisphere.
[44]
In the past 100 years, average Arctic temperatures have increased at almost twice the rate of the
rest of the world.[45]
This has been referred to as Arctic amplification.
 Sixteen of the seventeen warmest years on record have occurred since 2000.[56]
While record-breaking
years attract considerable public interest, individual years are less significant than the overall trend.
Some climatologists have criticized the attention that the popular press gives to "warmest year"
statistics. In particular, ocean oscillations such as the El Niño–Southern Oscillation(ENSO) can cause
temperatures of a given year to be abnormally warm or cold for reasons unrelated to the overall trend
of climate change. Gavin Schmidt stated: "the long-term trends or the expected sequence of records
are far more important than whether any single year is a record or not.

4. Resources
https://en.wikipedia.org/wiki/Gl
obal_warming