Climate Change : Evidences

.

.

The Earth’s climate has changed throughout history, which is mostly attributed to very small variations in Earth’s orbit that change the amount of solar energy our planet receives.
The current warming trend is of significance because it is extremely likely to be the result of human activity since mid-20th century and proceeding at an unprecedented rate over decades to millennia.

– www.climate.nasa.gov –

Earth’s average surface temperature has risen about 1.62° Fahrenheit (0.9° Celsius) since late 19^th century.

Most of the warming occurred in the past 35 years.

5 warmest years on record have been since 2010.

July 2021 was the hottest month on record

Rising amounts of greenhouse gases are preventing heat radiated from Earth’s surface from escaping into space as freely as it used to.
Most of the excess atmospheric heat is passed back to the ocean.

As a result, upper ocean heat content has increased significantly over the past few decades.
The top 700 meters (~2,300 feet) of ocean showing warming more than 0.4° Fahrenheit since 1969.

Data from NASA, between 1993 and 2016, show that:

– Greenland lost ~286 billion tons of ice per year
– Antarctica lost ~127 billion tons of ice per year
– The rate of Antarctica ice mass loss has tripled in the last decade

Glaciers are retreating almost everywhere around the world
— including in the Alps, Himalayas, Andes, Rockies, Alaska and Africa.

The amount of spring snow cover in the Northern Hemisphere has decreased over the past five decades.

Global sea level rose about 8 inches in the last century.

The rate in the last two decades is nearly double that of the last century
and is accelerating slightly every year

The number of extreme events of rainfall, flooding, drought, tornado and wildfire has been on a rise.

As Earth’s climate has warmed, a new pattern of more frequent and more intense  weather events has unfolded around the world.

For more details, refer to link: https://earthjustice.org/features/how-climate-change-is-fueling-extreme-weather

Since the Industrial Revolution, surface ocean waters acidity has increased by ~30%.

The amount of CO2 absorbed by the upper layer of the oceans is increasing by about 2 billion tons per year

Scientific evidence for warming of the climate system is unequivocal.

.

– Intergovernmental Panel on Climate Change –