POPs GMP data visualization and analysis

Transfer of GMP data into the electronic form

All data records available in Global Monitoring Plan regional reports were transformed into electronic form. They were classified, re-coded, standardized, digitized and subsequently stored in the database system. After these procedures, final set of data consisting of point estimates, annually aggregated short-time series and outputs of reliably reported well-established monitoring programmes was obtained.

Step 1: Classification

All reported variables were at first divided into groups related to their occurrence in the Stockholm Convention and the Global Monitoring Plan Guidelines and relevance of existing records for further data collection was also examined. The classification strictly followed scope of the Stockholm Convention and the GMP Guidance document and their amendments in time. Reported compounds were classified into four groups:

  1. Original 12 POPs included in the Stockholm Convention in 2001, their congeners, isomers and degradation products determined in the GMP Guidance (2007);
  2. Additional 10 POPs included into the Convention in 2009 and 2011 and specified in the updated GMP Guidance;
  3. All other compounds, their sums and toxic equivalents related to the Stockholm Convention but not specified in any of the GMP Guidance documents;
  4. Compounds found in the GMP reports but not related to the Convention.

Step 2: Standardization of the data

On the basis of the GMP reports analysis, standardization of data in line with the chapter 6 of the Guidance document was performed.

Step 3: Digitization and storage into database

Classified data were stored in the database of a defined structure. Only data relevant to the Stockholm Convention (see groups 1-3 above) are stored.

Step 4: Preparation of data for visualization

Annually aggregated concentration values are provided to be presented in the on-line browser.


Last update: 21 February 2013