NAIIS-User-Manual.Docx Page 4 10/02/2013 
1	Introduction	
 
The Non-Annex I Inventory software (NAIIS) web application is a web-based tool developed for use by Parties not 
included in Annex I to the Convention (non-Annex I Parties) to estimate and report their national greenhouse gas 
inventories (GHG inventories). As per Article 4, paragraph 1 (a), and Article 12, paragraph 1 (a) of the Convention, 
non-Annex I Parties are required to communicate to the Conference of the Parties a national inventory of 
anthropogenic emissions by sources and removals by sinks of all greenhouse gases (GHGs) not controlled by the 
Montreal Protocol, to the extent their capacities permit, following the guidelines contained in the annex to 
decision17/CP.8. 
 
In order to assist non-Annex I Parties in estimating and reporting their GHG inventories as part of their national 
communications, the secretariat developed an Excel-based software which incorporated all the elements of a national 
GHG inventory prescribed by decision 17/CP.8.  The software was based on the IPCC inventory software version 
1.1, which used the Tier 1 methodologies for estimating GHG emissions and removals for all source categories 
included in the Revised 1996 IPCC Guidelines, and further complemented by the GPGs.1 
 
Since its release in 2005, most non-Annex I Parties have been using that software for the development of their 
national GHG inventories. In December 2011, Parties requested the secretariat to upgrade the software and make it 
available to non-Annex I Parties by June 2013. Pursuant to that request, the secretariat converted the current Excel-
based version of the software (v.1.3.2)2 into a web-based application (NAIIS) which provides greater flexibility and 
security for maintaining data. 
  
2	General	information	
The NAIIS is a web-based application designed to en able non-Annex I Parties estimate their national GHG 
inventories according to the UNFCCC guidelines and using the IPCC methodologies, and to report the results in their 
national communications and biennial update reports. 
2.1	 System	overview	
The NAIIS web application has the following functionalities: 
1. User management  (only for the user roles NFP and PM) 
2. Submission management 
3. Data entry 
4. Key category analysis 
5. Reporting tables 
6. Data Export/Import 
7. Completeness 
8. Consistency 
 
The NAIIS web application allows input of data through three different channels: 
1. Manual input into the entry grids 
2. Partial or full import of data from Excel 
3. Bulk import of data from XML 
The GHG emissions totals, by gas and by sector, are automatically calculated and saved based on the values 
entered for activity data (AD), emission factors and other rele vant parameters. In addition, the software facilitates the 
reporting of other category specific info rmation, for example, the choice of t he method for activity data and emission 
factors. 
  
                                                 
1 Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories, 2000, and Good Practice Guidance for Land 
Use, Land‐Use Change and Forestry, 2003. 
2 http://unfccc.int/files/national_reports/non‐
annex_i_natcom/training_material/methodological_documents/application/zip/unfccc_nai_is_132.zip