Greenhouse gas concentrations - Copernicus
Human activities lead to the emission of greenhouse gases in various ways, including the combustion of fossil fuels for energy, deforestation, the use of fertilisers in agriculture, …
Climate Change Indicators: Atmospheric Concentrations of Greenhouse Gases
2025年1月15日 · Concentrations of these greenhouse gases are measured in parts per million (ppm), parts per billion (ppb), or parts per trillion (ppt) by volume. In other words, a …
Current GHG Levels - NOAA Climate.gov
The Annual Greenhouse Gas Index (or AGGI) is a measure that tracks the global warming influence of all human-emitted greenhouse gases, which was 51 percent higher in 2023 than it …
Overview of Greenhouse Gases | US EPA - U.S. Environmental …
2025年1月16日 · Greenhouse gas concentrations are measured in parts per million, parts per billion, and even parts per trillion. One part per million is equivalent to one drop of water diluted …
NOAA's Annual Greenhouse Gas Index - National Oceanic and …
The NOAA Annual Greenhouse Gas Index (AGGI) tracks the increasing amount of heat being added to the atmosphere by human-related greenhouse gas (GHG) emissions. It is based on …
Greenhouse gas concentrations - Copernicus
Satellite observations of the two most important anthropogenic greenhouse gases, carbon dioxide (CO 2) and methane (CH 4), show that the atmospheric concentrations of both continued to …
Climate Change Indicators: Greenhouse Gases | US EPA
2024年12月26日 · Greenhouse gases from human activities are the most significant driver of observed climate change since the mid-20th century. 1 The indicators in this chapter …
Carbon dioxide concentrations in the atmosphere
2024年11月18日 · This indicator describes how the levels of major greenhouse gases in the atmosphere have changed over time. The data contains concentrations of carbon dioxide in …
Greenhouse gas concentrations surge again to new record in 2023
From 1990 to 2023, radiative forcing – the warming effect on our climate - by long-lived greenhouse gases increased by 51.5%, with CO 2 accounting for about 81% of this increase, …
Climate Change: Annual greenhouse gas index
2022年6月17日 · By the end of 2022, NOAA reported that the AGGI was 1.49, meaning the direct warming influence of human-produced greenhouse gases had risen 49 percent since 1990. …