13.2.1. INTRODUCTION

‘Carbon footprint’ measures the total greenhouse gas emissions caused directly and indirectly by a person, organization, event or product.

The carbon footprint is a way to quantify the total greenhouse gases emitted by various entities, whether they are individuals, organizations, events, or products. It includes both direct emissions (from activities one can control) and indirect emissions (from supply chains and other factors). This measurement is crucial for understanding an entity's overall impact on climate change.

Imagine each person's carbon footprint as a shadow cast on the ground. The larger the shadow, the more significant the impact. Just like a shadow can be affected by the position of trees and buildings, a carbon footprint is influenced by how much energy one uses, the goods one buys, and how far one travels.

The footprint considers all six of the Kyoto Protocol greenhouse gases: Carbon dioxide (CO2), Methane (CH4), Nitrous oxide (N2O), Hydrofluorocarbons (HFCs), Perfluorocarbons (PFCs) and Sulphur hexafluoride (SF6).

The carbon footprint takes into account six primary greenhouse gases as defined by the Kyoto Protocol. These gases contribute to global warming to varying extents, and by measuring their emissions, we can better assess our environmental impact. For instance, carbon dioxide is the most prevalent, while methane, although present in smaller quantities, has a much higher global warming potential.

Think of greenhouse gases as different types of ingredients in a recipe for a cake. Just as each ingredient has a role in determining the cake's flavor and texture, each greenhouse gas affects the climate differently. For example, CO2 might be the flour, while Methane could be the eggs—both essential, but with different effects on the final result.

A carbon footprint is measured in tones of carbon dioxide equivalent (tCO2e). The carbon dioxide equivalent (CO2e) allows the different greenhouse gases to be compared on a like-for-like basis relative to one unit of CO2.

Carbon footprints are quantified in terms of carbon dioxide equivalent (CO2e). This means that emissions from other greenhouse gases can be converted into a common unit based on their global warming potential over a 100-year period. This conversion allows for straightforward comparisons and an overall picture of greenhouse gas emissions.

Consider CO2e like a common currency in a marketplace where different currencies from various countries are used. By converting all currencies into a single standard, it becomes easier to see how much each person is spending and to make comparisons, helping you understand contributions to the overall environmental debt.

The main types of carbon footprint for organizations are: A) ORGANISATIONAL CARBON FOOTPRINT...

There are two main types of carbon footprints: organizational and product. The organizational carbon footprint accounts for emissions resulting from all activities of an organization, while the product carbon footprint measures emissions throughout the entire lifecycle of a product. Understanding these distinctions allows organizations and consumers to assess and take actions towards reducing emissions effectively.

If we think of a carbon footprint like personal expenses, the organizational footprint is comparable to a family's total monthly spending on groceries, utilities, and transportation. In contrast, the product footprint is like checking how much a specific meal contributes to that total, from ingredients to preparation to delivery.

--