Are you also thinking is global warming real or is a hoax? If, in reality, it is a hoax, why has climate change become a major issue facing the world today? Why are the governments of different countries making efforts to reduce global warming? The latest agreement or the legally binding international treaty on climate change adopted in Paris, popularly known as Paris Agreement, aims to limit global warming and to achieve long term temperature goals. Recent global warming agreements brokered by the U.N. seek steep reductions in world C02 output to slow the presumed warming of the Earth’s atmosphere while also seeking alterations in the economy that would move energy sources away from fossil fuels toward renewable natural energy.
Why are such efforts taken by the government if global warming is a hoax?
Changes in temperatures and climates experienced by people living in countries all around the world. It is a matter of debate in some places.
Evidence of rising temperatures is pervasive and striking: By analyzing average temperatures all over the world, scientists have demonstrated an upward trend in the temperature. And this trend is a part of climate change that is affecting our planet’s weather. Climate change encompasses rising average temperatures and extreme weather events, shifting wildlife populations and habitats, increased wildfires, rising seas, and other impacts. In today’s article, we are going to discuss climate changes due to global warming, which proves somehow that global warming is real.
Measurement of climate: We are not dependent on the figures of thermometers only. We can go fortress store information even that are rooted for long years. Each year trees grow thicker and form new rings. In warmer and wetter years, the rings are thicker. Old trees and wood can tell us about conditions hundreds or even thousands of years ago. Sediments are another factor that helps us to know what the climate contains; it contains a wealth of information about what was in the air and water when they fell. These data can be ascertained by inserting hollow tubes into the mud to collect layers of sediment going back millions of years.
Scientists also drill the Earth’s polar ice sheets. Tiny bubbles trapped in the ice are the samples from the Earth’s past atmospheric conditions that are frozen in time.
Computer models help scientists to understand the Earth’s climate or long-term weather patterns. Models also allow scientists to make predictions about the future climate by simulating how the atmosphere and oceans absorb energy from the sun and transport it worldwide.
Impact of Greenhouse Gases on Global Warming
Several factors affect how much of the sun’s energy reaches Earth’s surface and how much of that energy gets absorbed. Those include greenhouse gases, particles in the atmosphere (from volcanic eruptions, for example), and changes in energy coming from the sun itself. The concentration of green house emissions is increasing at a rapid pace. Changes in solar irradiance and volcanic aerosols have contributed only about two percent of the recent warming effect over 250 years, and the balance comes from greenhouse gases and other human-caused factors. Nothing other than greenhouse gas emission can explain the fact of global warming reality. Carbon dioxide and other gases act as a greenhouse gas to warm our planet.
How do we know is global warming real or not?
Sometimes after having vast, updated scientific tools and research methodologies, climate change is becoming complex and unpredictable. All these changes are Earth’s climate that has drastically changed throughout history. Just in the last 650,000 years, there have been seven cycles of glacial advance and retreat. Most of these climate changes are attributed to very small variations in Earth’s orbit that change our planet’s amount of solar energy.
Scientific evidence for warming of the climate system:
- Intergovernmental Panel on Climate Change
- Ice cores have drawn from Greenland, Antarctica, and tropical mountain glaciers show that Earth’s climate responds to greenhouse gas levels changes. Evidence can also be found in tree rings, ocean sediments, coral reefs, and layers of sedimentary rocks. Carbon dioxide from human activity is increasing more than 250 times faster than it did from natural sources.
- Global Temperature Rise: The planet’s average surface temperature has risen.
- Warming Ocean: The ocean has absorbed much of this increased heat, with the top 100 meters (about 328 feet) of ocean showing warming of more than 0.6 degrees Fahrenheit (0.33 degrees Celsius) since 1969. Earth stores 90% of the extra energy in the ocean.
- Shrinking Ice Sheets: The Greenland and Antarctic ice sheets have decreased in mass. Data from NASA’s Gravity Recovery and Climate Experiment show Greenland lost an average of 279 billion tons of ice per year between 1993 and 2019, while Antarctica lost about 148 billion tons of ice per year.
- Glacial Retreat: Glaciers are retreating almost everywhere around the world — including in the Alps, Himalayas, Andes, Rockies, Alaska, and Africa.
- The decrease in Snow Cover: Satellite observations reveal that the amount of spring snow cover in the Northern Hemisphere has decreased over the past five decades, and the snow is melting earlier.
- Sea Level Rise: Global sea level rose about 8 inches (20 centimeters) in the last century. However, the rate in the last two decades is nearly double that of the last century and accelerating slightly every year.
- Declining Arctic Sea Ice: Both the extent and thickness of Arctic sea ice has declined rapidly over the last several decades.
- Extreme Events: The number of records high-temperature events in the United States has been increasing, while the number of record low-temperature events has been decreasing since 1950. The U.S. has also witnessed increasing numbers of intense rainfall events.
- Ocean Acidification: Since the beginning of the Industrial Revolution, the acidity of surface ocean waters has increased by about 30%. This increase is the result of humans emitting more carbon dioxide into the atmosphere and hence more being absorbed into the ocean. The ocean has absorbed between 20% and 30% of total anthropogenic carbon dioxide emissions.