A group of scientists has warned that the widespread use of nitrogen-based fertilizers is endangering ambitious climate goals and exposing the world to the risk of overtaking the Paris Agreement. The common synthetic fertilizers that farmers use to increase crop growth produce massive amounts of nitrous oxide.N2O), A greenhouse gas, it is less diffuse than carbon dioxide, but it is 300 times more effective as a contributor to global warming.
According to the British “Daily Mail” website, the dangerous gas depletes the ozone layer that protects us from the harmful ultraviolet rays of the sun, and remains in the atmosphere for a century.
And a historical study found that human-induced chemical emissions have risen since the 1980s, increasing by 30 percent over the past four decades. Annually, humans now produce 7.3 trillion grams of nitrogen annually, and more than half comes (3.8 trillion grams) (3.8 trillion). Grams) directly from agriculture, and that number increases every year at a rate of 1.4 percent, according to the data.
The researchers warned that if nitrous oxide emission continues at its current rate, global temperatures will rise to 3 degrees Celsius above pre-industrial levels by 2100.
The Paris Agreement is a prominent set of environmental goals that almost all countries signed in 2015, which aim to limit warming by the end of the century to below 2 ° C, but it hopes to achieve its more ambitious target of 1.5 ° C.
An international team of researchers from 48 institutions, including the University of East Anglia in England, led by Professor Hankin Tien at Auburn University, has published a study mapping the nitrogen cycle in the world.
The researchers revealed the worrying increase by comparing the current amount from N2O In the atmosphere (331 parts per billion in 2018) at pre-industrial levels (270 parts per billion in 1750).
Co-author Glenn Peters, director of research at the Center for International Climate Research, says fertilizers account for two-thirds of the staggering 3.8 tergrams.
Peters said: “Excess compost makes great food for soil bacteria and enhances the microbial processes that lead to nitrous oxide emissions, and the remaining third comes from livestock manure, and emissions are from microbial processes that break down nitrogen-containing compounds in the soil and oceans, and these are the same microbial processes that lead to nitrous oxide emissions.” To natural nitrous oxide emissions. “
The researchers divided up where nitrous oxide came from and where it was absorbed, and found that while nitrous oxide is a major contributor to agricultural resource, it also indirectly adds to the cumulative total.
For example, nitrogen trapped in fertilizers and manure can be transported to other areas away from its original location, and the excess nitrogen can be transported elsewhere through runoff and atmospheric dispersion.
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