Data requirements

Data requirements for calculating emissions factor for a crop.

The Inventory module calculates an absolute value of the emissions for a given time period (and associated with growing a crop on a field). Inventory is relevant for companies looking to understand their emissions impact. 

Inventory module takes in your field location and field management data (crop info, tilling events, fertilizer data, etc.). The API combines your data with field-level weather, soil info, etc. Field management data includes a recent history of events, we recommend a minimum of 3 years history but more ideally 5 years of history, as well as the reporting period for which your GHG inventory is measured. 

Each field contains a collection of management data grouped into cultivation cycles. Field data include:

• Field location (field boundaries, lat/long)
• Field conditions (soil data, if available and weather)
• Management events that happened on the field per cultivation cycle (such as crop planting/harvest, tillage, irrigation and nutrient management).

Every field must have historical management events. We require a minimum of 3 years of history but more ideally we recommend 5 years of history. And a field will also have another year of a reporting period with management events. The reporting period is the cultivation cycle / period of time for which the GHG measurements will be taken. 

The DNDC model powering the Measure API is calibrated for specific farm management events, field locations and conditions. The table below outlines the relevant information used to model GHG outcomes. Not all data in the table is required, and some field management events listed below will not have occurred on every field and likewise should not be used.