Technical Annual Status Report (Stage 2) for the CLRTAP Inventory Review: Synthesis and Assessment Country report
KEY CATEGORY ANALYSIS
Party: IS Submission year: 2025
Key categories analysis is becoming important in prioritising emission sources and identifying where inventory improvements can be most efficiently implemented. We have assessed the most important sources (the sources making up 80% of the national total) for your country, based on your latest submission. The key sources for the 2023, 2010 and 2005 emissions, including the corresponding percentages, are listed below. |
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2023 | 1A4ciii (53.2%) | 2C2 (10.5%) | 2C3 (5.8%) | 1A3bi (4.8%) | 1A3biii (4.6%) | 1A2gvii (3.6%) | 82.4% | ||||
| NMVOC | 2023 | 2D3a (14.5%) | 3B4e (11.5%) | 1A3ai(i) (9.9%) | 3B1a (9.4%) | 2H2 (8.9%) | 2D3d (7.5%) | 1A4ciii (6.4%) | 1B2av (5.9%) | 3B1b (3.9%) | 3B2 (3.4%) | 81.2% |
| SOx | 2023 | 1B2d (72.5%) | 2C3 (22.7%) | 95.2% | ||||||||
| NH3 | 2023 | 3Da2a (29.2%) | 3Da3 (15.2%) | 3B1a (15.1%) | 3B2 (10.1%) | 3B1b (10.0%) | 3Da1 (8.2%) | 87.9% | ||||
| PM2.5 | 2023 | 2C3 (34.1%) | 1A3bvii (21.3%) | 1A4ciii (12.4%) | 2A5b (5.4%) | 1A3bvi (4.4%) | 2C2 (3.7%) | 81.4% | ||||
| PM10 | 2023 | 2A5b (25.8%) | 2C3 (23.9%) | 1A3bvii (18.6%) | 1A4ciii (6.9%) | 1A3bvi (4.0%) | 2A5a (3.4%) | 82.6% | ||||
| TSP | 2023 | 2A5b (44.8%) | 1A3bvii (19.4%) | 2C3 (14.9%) | 2A5a (3.8%) | 82.9% | ||||||
| BC | 2023 | 1A2gvii (22.1%) | 1A3bvi (12.9%) | 1A3bvii (10.3%) | 1A4cii (9.2%) | 1A4ciii (8.1%) | 2C3 (7.9%) | 1A3bi (7.2%) | 1A2e (7.1%) | 84.6% | ||
| CO | 2023 | 2C3 (96.7%) | 96.7% | |||||||||
| Pb | 2023 | 1A3bvi (42.0%) | 2C3 (21.2%) | 1A3aii(i) (16.5%) | 5E (7.9%) | 87.5% | ||||||
| Cd | 2023 | 2C3 (95.8%) | 95.8% | |||||||||
| Hg | 2023 | 1A4ciii (45.0%) | 5C1bv (17.2%) | 1A3bi (14.1%) | 5C1biii (8.9%) | 85.2% | ||||||
| As | 2023 | 2C3 (90.9%) | 90.9% | |||||||||
| Cr | 2023 | 1A3bvi (53.8%) | 2C3 (36.5%) | 90.3% | ||||||||
| Cu | 2023 | 1A3bvi (83.6%) | 83.6% | |||||||||
| Ni | 2023 | 2C3 (89.8%) | 89.8% | |||||||||
| Se | 2023 | 1A4ciii (76.7%) | 1A3bvi (12.1%) | 88.8% | ||||||||
| Zn | 2023 | 2C3 (72.5%) | 1A3bvi (16.2%) | 88.7% | ||||||||
| DIOX | 2023 | 5C1biii (27.8%) | 2C2 (21.5%) | 5E (21.0%) | 5C2 (12.7%) | 83.1% | ||||||
| PAH | 2023 | 5C2 (25.4%) | 2C3 (18.3%) | 2C2 (16.7%) | 1A3bi (12.0%) | 5E (10.3%) | 82.8% | |||||
| HCB | 2023 | 5C1biii (48.4%) | 2G (18.2%) | 2C3 (16.9%) | 83.6% | |||||||
| PCB | 2023 | 5C1biii (63.3%) | 1A4ciii (32.8%) | 96.1% | ||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2010 | 1A4ciii (61.4%) | 1A3biii (5.9%) | 2C2 (5.5%) | 1A3bi (4.5%) | 2C3 (3.7%) | 81.1% | ||||||||
| NMVOC | 2010 | 1A3bi (12.8%) | 3B4e (11.7%) | 2D3a (10.9%) | 1A4ciii (8.3%) | 3B1a (7.5%) | 2D3d (5.5%) | 1A3ai(i) (4.7%) | 3B2 (4.0%) | 1B2av (3.9%) | 2D3h (3.6%) | 2H2 (3.4%) | 3B1b (3.3%) | 1A3bv (2.8%) | 82.6% |
| SOx | 2010 | 1B2d (79.5%) | 2C3 (13.4%) | 92.9% | |||||||||||
| NH3 | 2010 | 3Da2a (28.0%) | 3Da3 (16.0%) | 3B1a (13.2%) | 3B2 (13.0%) | 3B1b (9.0%) | 3Da1 (7.9%) | 87.1% | |||||||
| PM2.5 | 2010 | 1A4ciii (26.1%) | 2C3 (19.3%) | 2A5b (10.7%) | 1A3bvii (9.6%) | 2A5a (5.1%) | 2C2 (4.4%) | 1A1a (4.3%) | 1A3bi (2.3%) | 81.9% | |||||
| PM10 | 2010 | 2A5b (44.2%) | 1A4ciii (12.7%) | 2C3 (11.5%) | 1A3bvii (7.4%) | 2A5a (6.0%) | 81.7% | ||||||||
| TSP | 2010 | 2A5b (66.1%) | 1A3bvii (6.6%) | 2C3 (6.2%) | 1A4ciii (5.7%) | 84.5% | |||||||||
| BC | 2010 | 1A3bi (14.5%) | 1A2gvii (13.7%) | 1A3biii (11.5%) | 1A3bii (10.1%) | 1A4cii (9.3%) | 1A4ciii (8.8%) | 1A3bvi (5.4%) | 1A2e (5.1%) | 1A3eii (4.7%) | 83.0% | ||||
| CO | 2010 | 2C3 (90.1%) | 90.1% | ||||||||||||
| Pb | 2010 | 1A1a (44.1%) | 1A3bvi (14.5%) | 2G (11.7%) | 1A3aii(i) (10.6%) | 80.9% | |||||||||
| Cd | 2010 | 2C3 (77.6%) | 1A1a (17.7%) | 95.3% | |||||||||||
| Hg | 2010 | 1A1a (64.5%) | 1A4ciii (17.4%) | 81.9% | |||||||||||
| As | 2010 | 2C3 (60.8%) | 1A4ciii (26.1%) | 86.9% | |||||||||||
| Cr | 2010 | 1A3bvi (39.6%) | 2C3 (31.0%) | 1A4ciii (22.3%) | 92.9% | ||||||||||
| Cu | 2010 | 1A3bvi (77.4%) | 1A4ciii (7.7%) | 85.1% | |||||||||||
| Ni | 2010 | 1A4ciii (57.8%) | 2C3 (39.1%) | 96.9% | |||||||||||
| Se | 2010 | 1A4ciii (86.9%) | 86.9% | ||||||||||||
| Zn | 2010 | 2C3 (73.5%) | 1A3bvi (13.4%) | 87.0% | |||||||||||
| DIOX | 2010 | 1A1a (37.4%) | 5C2 (15.3%) | 5E (13.8%) | 1A3bi (9.8%) | 1A4ciii (6.8%) | 83.0% | ||||||||
| PAH | 2010 | 5C2 (24.7%) | 2C3 (15.8%) | 2C2 (14.4%) | 1A2f (13.5%) | 1A4ciii (7.9%) | 1A3bi (7.6%) | 83.9% | |||||||
| HCB | 2010 | 2G (89.2%) | 89.2% | ||||||||||||
| PCB | 2010 | 1A4ciii (41.5%) | 1A1a (38.9%) | 80.3% | |||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2005 | 1A4ciii (56.3%) | 1A3bi (7.2%) | 1A3biii (6.6%) | 2C2 (5.4%) | 1A2gvii (5.0%) | 80.5% | ||||||||
| NMVOC | 2005 | 1A3bi (21.8%) | 3B4e (9.2%) | 2D3a (8.2%) | 1A4ciii (7.0%) | 3B1a (5.7%) | 2D3d (5.3%) | 2D3h (4.7%) | 1A3ai(i) (4.1%) | 1B2av (3.5%) | 3B2 (3.1%) | 1A3bv (2.9%) | 2H2 (2.8%) | 3B1b (2.3%) | 80.5% |
| SOx | 2005 | 1B2d (76.1%) | 2C3 (8.6%) | 84.6% | |||||||||||
| NH3 | 2005 | 3Da2a (28.1%) | 3Da3 (16.4%) | 3B1a (13.0%) | 3B2 (13.0%) | 3B1b (8.4%) | 3Da1 (6.8%) | 85.8% | |||||||
| PM2.5 | 2005 | 1A4ciii (22.9%) | 1A3bvii (11.1%) | 2C3 (9.1%) | 2A5b (6.6%) | 2C2 (6.4%) | 1A2gvii (5.2%) | 2A5a (4.1%) | 1A1a (3.9%) | 1A3bi (3.6%) | 1A3biii (3.6%) | 1A4cii (3.5%) | 2G (3.1%) | 83.0% | |
| PM10 | 2005 | 2A5b (31.7%) | 1A4ciii (13.0%) | 1A3bvii (9.9%) | 2C3 (8.2%) | 2A5a (5.6%) | 2C2 (4.4%) | 1A1a (2.8%) | 2G (2.5%) | 1A2gvii (2.5%) | 80.5% | ||||
| TSP | 2005 | 2A5b (53.8%) | 1A3bvii (10.0%) | 1A4ciii (6.6%) | 2A5a (6.0%) | 2C3 (5.0%) | 81.4% | ||||||||
| BC | 2005 | 1A2gvii (20.6%) | 1A4cii (14.0%) | 1A3biii (12.9%) | 1A3bi (11.7%) | 1A4ciii (5.7%) | 1A3eii (5.6%) | 1A3bii (5.4%) | 1A2e (4.4%) | 80.3% | |||||
| CO | 2005 | 2C3 (64.9%) | 1A3bi (23.9%) | 88.8% | |||||||||||
| Pb | 2005 | 1A1a (30.0%) | 2G (24.3%) | 1A3aii(i) (14.4%) | 1A3bvi (12.4%) | 81.1% | |||||||||
| Cd | 2005 | 2C3 (58.4%) | 1A1a (29.2%) | 87.6% | |||||||||||
| Hg | 2005 | 1A1a (52.2%) | 1A4ciii (20.8%) | 1A2f (6.5%) | 1A4ai (5.1%) | 84.5% | |||||||||
| As | 2005 | 2C3 (44.1%) | 1A4ciii (31.9%) | 1A1a (13.5%) | 89.5% | ||||||||||
| Cr | 2005 | 1A3bvi (53.2%) | 1A4ciii (18.6%) | 2C3 (15.0%) | 86.8% | ||||||||||
| Cu | 2005 | 1A3bvi (75.4%) | 2G (10.2%) | 85.6% | |||||||||||
| Ni | 2005 | 1A4ciii (66.6%) | 2C3 (28.8%) | 95.4% | |||||||||||
| Se | 2005 | 1A4ciii (85.9%) | 85.9% | ||||||||||||
| Zn | 2005 | 2C3 (45.8%) | 1A3bvi (23.2%) | 1A4ciii (9.5%) | 5E (7.0%) | 85.4% | |||||||||
| DIOX | 2005 | 1A1a (39.8%) | 5C2 (15.9%) | 5E (14.5%) | 1A3bi (8.7%) | 5C1biii (8.2%) | 87.2% | ||||||||
| PAH | 2005 | 1A2f (30.0%) | 5C2 (26.0%) | 2C2 (12.8%) | 5E (6.3%) | 1A3bi (5.5%) | 80.6% | ||||||||
| HCB | 2005 | 2G (90.6%) | 90.6% | ||||||||||||
| PCB | 2005 | 1A2f (39.8%) | 1A1a (28.8%) | 1A4ciii (23.9%) | 92.5% | ||||||||||