For the 30th year in a row, greenhouse gases in the atmosphere are at an all-time high, the World Meteorological Organization (WMO) revealed in a new report.

Released Monday, the WMO's Greenhouse Gas Bulletin detailed a cycle of heightened carbon dioxide levels interacting with water vapor to worsen the greenhouse effect.

"Every year we report a new record in greenhouse gas concentrations," WMO Secretary-General Michel Jarraud said in a press release. "Every year we say that time is running out. We have to act NOW to slash greenhouse gas emissions if we are to have a chance to keep the increase in temperatures to manageable levels."

In 2014, the Earth's CO2 concentration was 397.7 parts per million (ppm) after 30 years of a consistent rise from 344.4 ppm in 1984, according to USA Today.

"We will soon be living with globally averaged CO2 levels above 400 parts per million as a permanent reality," Jarraud said in the release. "We can't see CO2. It is an invisible threat, but a very real one. It means hotter global temperatures, more extreme weather events like heatwaves and floods, melting ice, rising sea levels and increased acidity of the oceans. This is happening now and we are moving into unchartered territory at a frightening speed.

"Excess energy trapped by CO2 and other greenhouse gases is heating up the Earth surface which leads to increase in atmospheric water vapor which in turn is generating/trapping even more heat."

U.S. President Barack Obama is expected to meet other world leaders in Paris later this months to discuss ways to lessen greenhouse gas emissions. Some studies have found the effects of global warming to be irreversible, but all experts agree swift action can still be taken to aid the problem.

"Carbon dioxide remains in the atmosphere for hundreds of years and in the ocean for even longer," Jarraud said. "Past, present and future emissions will have a cumulative impact on both global warming and ocean acidification. The laws of physics are non-negotiable."