Technical Annual Status Report (Stage 2) for the CLRTAP Inventory Review: Synthesis and Assessment Country report

TIME SERIES

Party: IE Submission year: 2026

The aim of this test is to identify instances of dips, jumps, and sudden changes in time series data reported by countries. The analysis was limited to data provided in NFR02, NFR09, NFR14 and NFR19 reporting format. Only data reported for at least three years were considered. Years where only NFR02 or NFR09 sectors were available have been converted to NFR14/NFR19. Only the converted sectors are 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) is more than 2 standard deviations from the mean of all residuals in 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. more 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 – 2024
HMs and POPs: 1990 - 2024
PMs: 2000 - 2024

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)

		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024
NOx	1A3ai(ii)	3688	3568	3060	4997	4295	4137	3641	4575	4667	5641	6663	8291	8960	8716	8191	9655	11275	11885	10938	8528	8841	7759	6438	7695	8707	9284	9474	11377	12098	12214	4446	5075	11316	12845	12486
NMVOC	1A3bv	6005	6181	6143	5750	5519	5418	5123	4615	4389	3921	3089	2843	2523	2331	2174	2739	2664	2622	2821	2703	2526	2420	2319	2239	2136	2023	1879	1707	1613	1537	1467	1422	1436	1577	1672
NMVOC	2D3i	1323	1327	1318	1303	1129	1075	1291	2079	2141	2296	1444	2996	2474	1512	3487	3642	3848	5181	3779	2645	1907	2052	1712	1430	1749	1930	1890	1983	2242	2260	2310	1981	2009	2260	1874
NMVOC	NTCOMPL(NECD)	161029	160301	155317	151979	147432	145064	145737	141255	142094	132475	125358	125127	124643	123047	122369	77301	118069	119616	118027	115961	112741	109717	109867	111688	109141	110684	112571	116255	114749	115680	66095	68187	70476	68664	68676
SOx	1A2c	2118	1703	2032	2071	2638	2434	2275	2489	2461	2156	2294	2056	754	631	555	1282	1202	1287	930	661	705	691	607	660	581	477	455	468	447	406	226	302	40	23	32
SOx	1A2f	2238	2178	1746	1881	1790	1777	1858	1931	1830	1614	2070	1884	1723	2551	3267	3209	1406	1910	1784	1296	1006	1659	1506	1541	1505	1040	1228	1188	1292	903	688	893	808	789	866
SOx	1A3ai(ii)	229	221	190	309	266	256	225	283	289	349	412	513	555	540	507	594	691	731	672	527	554	490	401	471	526	596	606	723	780	787	281	318	724	811	794
SOx	1A4bi	26757	28150	22619	22110	19891	17441	18626	17669	18473	15075	15594	16286	13180	13172	11659	12929	11466	11244	9595	9583	9230	8212	8012	8401	7499	7563	8255	7302	7237	6541	6931	7410	5354	4784	4944
CO	1A1a	18152	17953	20164	19980	20554	21982	22299	21910	22283	20153	22511	23844	23329	21751	22086	22590	20332	20020	17831	14803	16352	16049	18910	16119	15579	17867	18297	15311	10439	6079	6642	12650	11633	7950	5987
CO	1A3ai(ii)	988	971	827	1326	1157	1109	982	1259	1269	1529	1817	2293	2522	2471	2331	2370	2884	3138	3052	2466	2864	2531	2072	2231	2301	2735	2833	3050	3174	3186	1000	1173	2898	3068	3007

PM (Unit = Mg)

		2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024
PM2.5	1A1a	1262	1445	1175	916	1031	1074	951	717	663	499	457	382	435	376	385	438	440	363	281	241	252	536	436	210	252
PM10	1A1a	1747	1997	1641	1289	1418	1501	1324	1014	952	729	666	575	669	580	599	676	674	559	433	362	351	724	585	276	325
BC	1A2b	159	140	138	138	148	136	97	88	84	54	86	57	35	36	17	3	2	2	2	3	3	2	2	3	3
BC	1A3ai(ii)	39	48	51	50	47	61	65	68	59	47	50	44	35	39	43	58	59	68	72	73	26	30	68	75	74
BC	1A3di(i)	60	63	62	74	63	41	25	15	8	20	30	26	32	38	35	44	45	43	47	40	45	52	40	41	37

HM (Unit = g)

		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024
Pb	1A1a	816233	864552	929471	877849	913371	930534	930320	942574	982971	976791	931867	1032252	955367	833487	767931	888941	785434	714573	730594	635102	609284	610990	752262	669894	698879	749971	757292	673039	559727	441703	339532	445979	388774	241157	222120
Pb	1A2e	504464	445838	300130	335559	249971	275155	330576	310237	289040	272254	364419	309565	243338	311417	267628	378594	267989	225494	216976	179097	177857	137537	125050	150531	173181	171620	152954	160715	147246	54985	66806	25816	32639	23905	21227
Pb	1A3aii(i)	684904	730262	788502	596979	502899	641783	602584	702825	562267	879232	1004675	1062355	942514	1097076	1137395	1089798	1134481	1099302	1152064	606273	657381	588787	510482	627686	531566	521200	568535	530401	465545	521608	528202	538098	444111	503473	355073
Pb	1A3bi	136619733	121158063	130961801	112727659	98479708	84915355	69378242	74450468	46729693	25435723	4409305	4061219	4162977	4164307	4280771	45289	46076	47145	45561	41766	38134	36194	33064	31221	29595	28276	2071	1945	2152	2069	1752	1768	1957	2327	1764
Pb	1A3bi(fu)	144953617	126779232	136366456	116641267	99519420	85700443	70349522	72978221	44319647	23906254	4060624	3804384	3911658	3955860	4093898	43478	44270	45033	44652	41655	37745	35883	32849	31137	29265	27522	1989	1914	2117	2017	1704	1720	1906	2286	1764
Pb	1A3bii	5670517	5545983	5177065	2916059	2092559	1449235	954138	862041	443677	193620	52815	38725	31081	25227	22744	540	524	528	396	355	317	297	276	283	296	324	289	288	294	300	265	300	310	315	6
Pb	1A3bii(fu)	6016431	5803297	5390720	3017300	2114650	1462632	967494	844984	420772	181945	48588	36226	29145	23913	21702	483	465	453	366	328	289	270	251	260	265	273	251	271	276	276	243	276	290	297	6
Pb	2C1	1753156	1575689	1382089	1753156	1430489	1667111	1833822	1812311	1925244	1801556	1936000	806667
Cd	1A2f	4147	3757	3725	3606	4172	4256	4324	4960	4828	5114	7405	7972	7973	9480	10309	11186	10352	10378	8117	7044	5519	6092	6361	5933	2785	5464	6787	6454	6614	11615	13002	6827	6049	5985	5795
Cd	2C2	32541	32541	32541	32541	32541	32541	32541	32541	32541	2802	2802	2623	2414	1776	3291	611	721	475	696	1284	7598	400	231	393	100	100		100	100	100	28	100	40	50	80
Cd	2G	37862	40826	38927	37324	38614	41163	39538	40422	41388	44190	44035	43691	45081	39893	34292	35319	35905	34707	31828	30473	27273	27533	25262	22021	20945	22581	19042	24597	12500	19295	17965	18848	16103	13493	12980

POP (Unit = mg)

		1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024
DIOX	5C2	935	898	956	1025	1078	1097	1123	662	631	609	655	624	468	422	160	230	317	58	1143	1147	1151	296	393	283	452	494	461	495	594	827	484	446	142	82	91
HCB	1A1a	487777	482186	530090	520191	531815	558882	556153	542923	549435	494341	539745	564182	550564	510711	521488	536924	480999	468214	418387	359054	387178	403249	482025	431786	425216	473948	476751	422421	329262	234084	250778	385195	356436	281385	245791
PCB	5C2	1589870	1527278	1625143	1742180	1832255	1864610	1909547	1125213	1072778	1035588	1112894	1061477	796242	717054	272219	390480	538242	98924	1942268	1949612	1956956	502550	667423	480591	769211	840594	782944	841549	1009359	1405788	822528	757680	241838	139689	155013
PCB	5E	14388589	14702433	15108374	15482053	15800851	16119084	16002877	15403509	14535386	18959428	18885511	23349258	46213083	59082665	37040477	25035166	25658769	5781526	5585326	5747976	6426305	5849904	5044713	3087080	2541958	4378023	2112473	2818680	3541865	3094330	3117809	2760551	2993148	2702860	2705385
PCB	NATIONALTOTAL	39545848	38008491	36063659	35724658	34240593	33235717	32711707	29780296	28409967	30666571	30209842	33660804	55426239	67594151	44254213	31938214	30662774	10194801	11957776	11944116	12375384	9967245	9328335	7395349	6845736	8873874	6619080	6897331	7990456	7516041	7046766	6553309	5661658	4916595	4844444
PCB	NTCOMPL(NECD)	39545859	38008499	36063666	35724665	34240594	33235717	32711709	29780286	28409938	30666529	30209778	33660743	55426171	67594093	44254159	31938171	30662727	10194740	11957746	11944087	12375352	9967213	9328305	7395323	6845701	8873826	6619048	6897321	7990446	7516031	7046759	6553302	5661653	4916590	4844443
PCB	NTCOMPLIANCE	39545859	38008499	36063666	35724665	34240594	33235717	32711709	29780286	28409938	30666529	30209778	33660743	55426171	67594093	44254159	31938171	30662727	10194740	11957746	11944087	12375352	9967213	9328305	7395323	6845701	8873826	6619048	6897321	7990446	7516031	7046759	6553302	5661653	4916590	4844443