Review Stage 2: Synthesis and Assessment Country report

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TIME SERIES

Party: KG      Submission year: 2019

The aim of this test is to identify instances of dips, jumps, and sudden trends in time series data reported by countries. Only data in NFR02, NFR09 and NFR14 reporting format were analyzed and data for which at least three years were reported. We converted all years where only NFR02 or NFR09 sectors are available to NFR14 and show only the converted sectors in the time series analysis.

The table below shows data, where outliers in the time series were identified based on the following methodology: Reported time series data were log 10-transformed prior to analysis to reduce intra-series variability and improve general time series linearity. A linear regression was subsequently applied to the log-transformed values for each time series.

An individual value within the time series was identified as a dip/jump if the respective residual value (regression forecast value - reported value) was greater than 2 standard deviations from the mean of all residuals within the time series. Only time series where the flagged data value contributed a significant fraction (>3%) of the national total for the given year are included in this dataset for expert review.

Time series where sigma grow largely (i.e. larger than 20% of the time series mean value) because of extreme variation in the emission data are also flagged. Zero values indicate small numbers rounded to zero.

The test was performed for the following time series (if data was available):
Main pollutants: 1990 – 2017
HMs and POPs: 1990 - 2017
PMs: 2000 - 2017

If there is a number and a notation key reported, the difference is the number

Color Key

 

Indicates a dip in the time series data

 

Indicates a jump in the time series data

 

Indicates time series data with large sigma


MAIN (Unit = Mg)
1990199119921993199419951996199719981999200020012002200320042005200620072008200920102011201220132014201520162017
NOx1A2c                    9139139 44  
NMVOC1A2gviii                    000 356356  
NMVOC1B2av                    470000470470 470470  
NMVOCNATIONALTOTAL24970800069004000250012380240016150240016910166201761017610172501783017210    3020435103603 25872630488555 
NH31A2b                    14511 11  
NH31A2c                    000 138138  
NH31A2e                    533 1515  
NH3NATIONALTOTAL         59114          544 2205821953773 

PM (Unit = Mg)
200020012002200320042005200620072008200920102011201220132014201520162017
PM2.51A1a              52566612136 

HM (Unit = g)
1990199119921993199419951996199719981999200020012002200320042005200620072008200920102011201220132014201520162017
Pb1A2d                    500050005     
PbNATIONALTOTAL         5000          500050005   3953101 
CdNATIONALTOTAL                    830083008   67862 
Hg1A2c                    540000540000540 5252  
HgNATIONALTOTAL                    540000540000540 5252200642