ecoinvent

Climatiq provides the impact category / indicator “climate change: total (excl. biogenic CO2) - GWP100”. See https://support.ecoinvent.org/guidance-on-ipcc-methods.

The system model is "Allocation cut-off by Classification". See https://support.ecoinvent.org/system-models#Allocation_classification.

This is the dataset recommended for use by ecoinvent. Note that “excl. biogenic CO2” suffix is to differentiate it from another dataset “incl. biogenic CO2” that is intended only for specialist use. It does not mean that biogenic CO2 emissions are ignored completely; the relevant sources are covered within the “direct land use change” indicator.

The emission factor "name" in the Climatiq database is derived from the source Activity Name and Reference Product Name. It is important to understand the importance of the reference product in ecoinvent as emissions are expressed in terms of units of the reference product. For example:

Succinic acid (adipic acid production) - the emission factor is for the production of the quantity of Succinic acid (name) required to produce unit (e.g. 1kg) of adipic acid (reference product). The quantity required is not given by the source meaning that these "production" emission factors are difficult to use without understanding the underlying processes.

We therefore recommend using the "market for" emission factors with "(market for)" in the names and "market_for_" in the activity_id e.g. "Succinic acid (market for)". Market-for emission factors are for the production of one unit (e.g. 1 kg) of the activity. These factors include all upstream emissions, transportation to the "consumer" and losses. See https://support.ecoinvent.org/market-activities .

We recommend using only "market for" emission factors as these include all upstream emissions for the production of one unit of the activity. Note that these also include transportation to the "consumer" so you may be double-counting if you add inward freight to your calculations.