Global Warming and Impacts

Saiara Aziz

Global warming refers to the increase in global temperatures, mainly due to the increasing concentration of greenhouse gases in the atmosphere. The earth is on fire. An unprecedented rise in global atmospheric temperature on Earth can be termed global warming. The average temperature on earth has increased by 1.5 degrees Celsius in the last ten years. Global warming is not a single phenomenon; rather, a series of interconnected events driving the eventual rise in global temperatures. It has a plethora of impacts at different levels of the ecosystem.

In some parts of the world the effect is negligible while in others it is significant. When fossil fuels are burned and animals breathe, gases such as carbon dioxide are released into the atmosphere. The main greenhouse gases are carbon dioxide, methane, nitrous oxide and ozone. These gases, when present in unbalanced amounts, lead to global warming. Global warming has the potential to wipe out the entire human population from the surface of the earth, so it must be contained at the earliest. Although the damage cannot be undone, we can ensure that the effects are controlled to some extent. The first thing we need to do is carry out a mass reforestation operation. Next, we can switch from conventional energy sources like oil to cleaner ones like solar and wind power.

As global average temperatures warm, weather patterns are changing. Extreme weather events are a direct result of global warming. These extremes come in many different flavors. Paradoxically, one impact of climate change can be colder than normal in some areas. 

One of the most important phenomena of climate change to date is melting. According to a 2016 study published in the journal current climate change reports, there was a trend toward less snow in North America, Europe, and Asia between 1960 and 2015. There is now 10% less permafrost or permanently frozen ground, in the northern hemisphere than there was at the beginning of the 20th century, according to the national snow and ice data center there. 

In general, sea levels rise as ice melts. According to a 2021 report by the world meteorological organization, the rate of sea level rise doubled from 0.08 inches (2.1 millimeters) per year between 1993 and 2002 to 0.17 inches (4.4 mm) per year between 2013 and 2021.

The effects of global warming on the earth’s ecosystems are expected to be profound and widespread. many plant and animal species are already migrating north or to higher elevations due to warming, according to a report from the National Academy of Sciences.

As dramatic as the effects of climate change on nature are to be expected, the predicted changes can be just as devastating for human society. Farming systems are likely to suffer a crippling blow. Although growing seasons will lengthen in some areas, the combined effects of drought, severe weather, lack of snowmelt, increased number and variety of pests, lower water tables and loss of arable land could lead to severe crop failures and livestock shortages worldwide.

Average rainfall in the United States has increased since 1900, but some areas have increased more than the national average and some areas have decreased. Average rainfall in the United States has increased since 1900, but some areas have increased more than the national average and some areas have decreased. More winter and spring precipitation is projected for the northern United States and less for the Southwest this century.

Droughts and heat waves in the Southwest (periods of unusually hot weather lasting days to weeks) are projected to become more intense everywhere and cold waves less intense everywhere. Droughts and heat waves in the Southwest (periods of unusually hot weather lasting days to weeks) are projected to become more intense everywhere and cold waves less intense everywhere.

Sea levels will rise from 1 to 8 feet by 2100. Global sea levels have risen about 8 inches since reliable records began in 1880. It is projected to rise another 1 to 4 feet by 2100.Since reliable records began in 1880, global sea levels have risen by about 8 inches. It is projected to rise another 1 to 8 feet by 2100. This is the result of the additional water from melting land ice and the expansion of seawater as it warms.

Flooding, the most common and deadliest natural disaster in the United States, is likely to be exacerbated and intensified by sea level rise and extreme weather conditions. Heavy precipitation is projected to increase to three times the historical average over the course of the century. A 2018 study found that over 40 million Americans are at risk of river flooding and over 8.6 million people live in areas already subject to coastal flooding from storm surges during hurricanes. 

As global warming continues, heat waves are expected to increase in frequency, duration and intensity. Jane Baldwin, a postdoctoral researcher at the Lamont-Doherty Earth Observatory, found that compound heat waves that occur one after the other will also increase, making heatwave recovery more difficult.

As temperatures rise, people need to stay cool for health and comfort reasons. Climate Central analyzed 244 US cities and found that 93 percent saw an increase in days that required extra cooling to stay comfortable. The more we rely on air conditioners and fans, the higher the electricity bills get.

Warmer temperatures lengthen the pollen season and worsen air quality, which can lead to more allergies and asthma attacks. Ground-level ozone, a major component of smog that increases in warm temperatures, can also cause coughing, tightness or chest pain, decrease lung function, and worsen asthma and other chronic lung diseases.

In 2015, Radley Horton, associate research professor at the Lamont-Doherty Earth Observatory and then Ph.D. Student Ethan Coffel published a study that calculated how extreme heat could limit aircraft takeoff weight. Hotter air is less dense, so airplanes get less lift under their wings and engines produce less power. Airlines may be forced to push passengers or leave luggage to lighten their loads.

Severe storms and heavy rain can contaminate water resources. In cities, runoff picks up pollutants from the streets and can flood sewage systems, allowing untreated wastewater to enter drinking water supplies.

This is how global warming effects.

Author is a student of Jatiya Kabi Kazi Nazrul Islam University.

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