Log in. Ask your question. The last time the Earth experienced a comparable concentration of CO2  was 3-5 million years ago, the temperature was 2-3°C warmer and sea level was 10-20 meters higher than now. 1. Concentrations of CO2 are now 145% of pre-industrial (before 1750) levels. Over the last 800 000 years, pre-industrial atmospheric CO2 content remained below 280 ppm, but it has now risen to the 2016 global average of 403.3 ppm. Oceans cushion the increases in carbon dioxide that would otherwise be seen in the atmosphere – but at a cost, with the world’s seas becoming more acidic at a rate not seen for at least 300m years, the WMO said. For the first time, the WMO bulletin includes a section on ocean acidification, caused by the uptake of carbon dioxide into the seas, which can harm the ability of wildlife such as corals, molluscs and some plankton to form shells. The National Oceanic and Atmospheric Administration (NOAA) Annual Greenhouse Gas Index shows that from 1990 to 2018 radiative forcing by long-lived greenhouse gases (LLGHGs) increased by 43%, with CO2 accounting for about 80% of this increase. Of particular concern is the indication that carbon storage in the world’s forests and oceans may be faltering. Between 1990 and … Data show levels of the gas increased more between 2012 and 2013 than during any other year since 1984, possibly due to less uptake of carbon dioxide by ecosystems such as forests, as well as rising CO2 emissions. “The greenhouse gas bulletin shows that, far from falling, the concentration of carbon dioxide in the atmosphere actually increased last year at the fastest rate for nearly 30 years. At current rates, annual concentrations will pass the symbolic 400ppm in 2015 or 2016, the WMO said, although that level has already been reached over shorter periods than a year as CO2 levels fluctuate seasonally and regionally. The annual bulletin is based on observations from the WMO Global Atmosphere Watch Programme. Key findings of the Greenhouse Gas Bulletin. It could also reduce survival, hit development and growth rates and effect physiological functions in wildlife. We have many of the solutions already to address this challenge. Answered Concentration of greenhouse gases has risen rapidly due to 2 See answers koushikmkj koushikmkj Nitrous oxide (N2O) is emitted into the atmosphere from both natural (about 60%) and anthropogenic sources (approximately 40%), including oceans, soil, biomass burning, fertilizer use, and various industrial processes. These observations help to track the changing levels of greenhouse gases and serve as an early warning system for changes in these key atmospheric drivers of climate change. We are running out of time. Join now. Methane The last few years have seen enormous uptake of renewable energy, but we must now redouble our efforts to ensure these new low-carbon technologies are able to thrive. 2008. High-resolution carbon dioxide concentration record 650,000–800,000 years before present. © 2020 World Meteorological Organization (WMO), Greenhouse gas concentrations surge to new record, World Meteorological Organization's Greenhouse Gas Bulletin, Nineteenth session of the North Eurasia Climate Outlook Forum (NEACOF-19) - Roshydromet, WMO welcomes launch of new ocean-monitoring satellite, Landmark Data Conference sets the scene for change, Carbon dioxide levels continue at record levels, despite COVID-19 lockdown, Arctic Climate Forum expects above normal winter temperatures. WMO is also striving to improve weather and climate services for the renewable energy sector and to support the Green Economy and sustainable development. Emissions represent what goes into the atmosphere. The rate of increase of atmospheric CO2 over the past 70 years is nearly 100 times larger than that at the end of the last ice age.

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