MMTCDE (million Metric tons of a gas) * (GWP of the gas) is --->greenhouse gas, global warming potential, carbon equivalent.

In the environmental context, "MMTCDE" refers to million metric tonnes of carbon dioxide equivalent. This is a unit of measurement used to quantify greenhouse gas emissions and compare the impact of different greenhouse gases on the environment. Here are some examples of how MMTCDE is used in the environmental context:

1. National greenhouse gas emissions: Governments use MMTCDE to measure and report their national greenhouse gas emissions. This information is used to track progress toward climate change goals, such as those established under the United Nations Framework Convention on Climate Change.

2. Corporate greenhouse gas emissions: Companies use MMTCDE to measure and report their greenhouse gas emissions, particularly those associated with their operations and supply chains. This information is used to set targets for reducing emissions and to track progress toward those targets.

3. Carbon offset projects: Carbon offset projects, which aim to reduce greenhouse gas emissions or remove carbon dioxide from the atmosphere, often use MMTCDE to quantify the amount of emissions they have reduced or removed.

MMTCDE is an important unit of measurement in the environmental context, as it allows for the comparison of different types of greenhouse gases and provides a standardized way to quantify emissions. By tracking and reducing greenhouse gas emissions, we can work toward mitigating the impacts of climate change on the environment.