This may sound to be only a jargon. But in simple words it means the amount of carbon dioxide (and heat energy) gets released in environment due to activities of a person or of a community – either individually or as a group.
And why should one be worried about this? Short answer is – more the CO2 and/or heat released in atmosphere more will be the adverse impact on weather, surroundings, flora and fauna and even the seasons and annual cycles of rain and winter and summer.
This can be calculated or estimated to a very accurate detail but will need lots of data.
So here above is a simple calculation for typical urban or semi-rural lifestyle of current days. As of corona outbreak the human activity has significantly reduced worldwide and so is the impact on environment – expected to have reduced.
Please go through the list and verify how much is your contribution.