World Meteorological Organization (WMO) recorded the atmospheric concentrations of greenhouse gases – Carbon dioxide, Methane, and Nitrous Oxide. Its reports state that CO2 concentration was just above the average rise recorded over the last decade. The concentrations of other greenhouse gases, such as methane and nitrous oxide, have also surged by above-average amounts.
Rather than the just emissions, the WMO report assesses the concentrations of these greenhouse gases in the atmosphere. There is a difference between the two. Emissions refers to the gases that are added in the atmosphere from various sources like fossil fuel usage, electricity generation from coal combustion, deforestation, etc. After the emission of these gases in the air, complex series of interactions occur between atmosphere, oceans, forest and land wherein a quarter of these carbon emissions are absorbed by seas and a significant amount by land and trees.
Researchers states, 2018 concentrations of CO2 reached 407.8 parts per million (ppm), up from 405.5ppm a year before This rise was above the average for the last decade and is 147% of the "pre-industrial" level in 1750. Nitrous oxide, according to the WMO, is now at 123% of the levels that existed in 1750 while Methane is now at 259% of the pre-industrial levels. The rise in levels observed for methane over the past year, was higher than both, the average over the past decade and the previous annual rate.
These findings came from using data from monitoring stations in the Arctic and all over the world.
Scientists are concerned with the overall warming impact of all these rising concentrations which is known as total radiative forcing. This effect has increased by 43% since 1990, and current trends do not seem to stop.
WMO Secretary-General Petteri Taalas raises his concern over the matter.
Tags : World Meteorological Organization, Carbon dioxide, Methane, Nitrous Oxide, greenhouse gases,