Question

What is global warming​

Answer 1

Global warming is projected to have a number of effects on the oceans.

Ongoing effects include rising sea levels due to thermal expansion and melting of glaciers and ice sheets, and warming of the ocean surface, leading to increased temperature stratification.

Answer 2

Answer:

Global warming is the long-term rise in the average temperature of the Earth's climate system. It is a major aspect of current climate change, and has been demonstrated by direct temperature measurements and by measurements of various effects of the warming.[1][2] The term commonly refers to the mainly human-caused increase in global surface temperatures and its projected continuation.[3][4] In this context, the terms global warming and climate change are often used interchangeably,[5] but climate change includes both global warming and its effects, such as changes in precipitation and impacts that differ by region.[6] There were prehistoric periods of global warming,[7] but observed changes since the mid-20th century have been much greater than those seen in previous records covering decades to thousands of years.[1][8]

Global warming is the long-term rise in the average temperature of the Earth's climate system. It is a major aspect of current climate change, and has been demonstrated by direct temperature measurements and by measurements of various effects of the warming.[1][2] The term commonly refers to the mainly human-caused increase in global surface temperatures and its projected continuation.[3][4] In this context, the terms global warming and climate change are often used interchangeably,[5] but climate change includes both global warming and its effects, such as changes in precipitation and impacts that differ by region.[6] There were prehistoric periods of global warming,[7] but observed changes since the mid-20th century have been much greater than those seen in previous records covering decades to thousands of years.[1][8]The Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report concluded, "It is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century."[9] The largest human influence has been the emission of greenhouse gases such as carbon dioxide, methane, and nitrous oxide. Climate model projections summarized in the report indicated that during the 21st century the global surface temperature is likely to rise a further 0.3 to 1.7 °C (0.5 to 3.1 °F) in a moderate scenario, or as much as 2.6 to 4.8 °C (4.7 to 8.6 °F) in an extreme scenario, depending on the rate of future greenhouse gas emissions and on climate feedback effects.[10] These findings have been recognized by the national science academies of the major industrialized nations[11] and are not disputed by any scientific body of national or international standing.[12][13]

Global warming is the long-term rise in the average temperature of the Earth's climate system. It is a major aspect of current climate change, and has been demonstrated by direct temperature measurements and by measurements of various effects of the warming.[1][2] The term commonly refers to the mainly human-caused increase in global surface temperatures and its projected continuation.[3][4] In this context, the terms global warming and climate change are often used interchangeably,[5] but climate change includes both global warming and its effects, such as changes in precipitation and impacts that differ by region.[6] There were prehistoric periods of global warming,[7] but observed changes since the mid-20th century have been much greater than those seen in previous records covering decades to thousands of years.[1][8]The Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report concluded, "It is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century."[9] The largest human influence has been the emission of greenhouse gases such as carbon dioxide, methane, and nitrous oxide. Climate model projections summarized in the report indicated that during the 21st century the global surface temperature is likely to rise a further 0.3 to 1.7 °C (0.5 to 3.1 °F) in a moderate scenario, or as much as 2.6 to 4.8 °C (4.7 to 8.6 °F) in an extreme scenario, depending on the rate of future greenhouse gas emissions and on climate feedback effects.[10] These findings have been recognized by the national science academies of the major industrialized nations[11] and are not disputed by any scientific body of national or international standing.[12][13]The effects of global warming include rising sea levels, regional changes in precipitation, more frequent extreme weather events such as heat waves, and expansion of deserts.[14] Surface temperature increases are greatest in the Arctic, which has contributed to the w