Contract to deliver the UK's National Atmospheric Emissions Inventory

Modification Notice Original description: To provide Greenhouse Gas (GHG) and Air Quality Pollutant Inventories to the UK Department of Energy and Climate Change (DECC) and the UK Department for the Environment Food and Rural Affairs (Defra), respectively.

DECC In addition to the Inventory itself, there will be a need to use and adapt the underlying database to meet a number of additional requirements: •Data to support DECC's National Statistics on GHG emissions •Spatially distributed emissions maps •Local Authority emissions statistics •Devolved Administration GHG emissions inventories Defra As with the GHG Inventory, there are additional requirements to be met: •Data to support Defra's National Statistics on air pollutant emissions. •Spatially distributed emissions maps •Devolved Administration air quality pollutant emissions inventories The contract is expected to run for 3 years 7 months with an option to extend for up to a further year (see additional info for more).

Description of the modifications Work to enhance the 1990-2019 emission estimates for greenhouse gases and air quality pollutants though delivering improved information on the effects of wetlands on the greenhouse gas emissions inventory, a sensitivity study of forest carbon modelling to improve the National Inventory Report, improved projections of air quality emissions, and a number of air quality emission estimate improvements.

Current contract value is £8,723,451.72 excl.

VAT after variations 1-4.

New value £8,919,896.63 Description of the circumstances which rendered the modification necessary and explanation of the unforeseen nature of these circumstances: To enable a parallel inventory to be developed to include the changes required by the Wetland Supplement and other improvements to the greenhouse gas and air quality inventories required before March 2021.

In the absence of the work, it would not have been possible to provide ministers with options for inclusion before COP26 or after CCC advice is received.

Only inclusion or exclusion of wetlands would be possible which would either weaken our position at COP26 and in the UNFCCC 2021 review.