Review Stage 2: Synthesis and Assessment Country report
KEY SOURCE ANALYSIS FOR
CLRTAP
Party: GB Submission year: 2020
Key categories analysis is increasingly important in order to prioritize emission sources and identify where the implementation of improvements is most effective. 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 2018, 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 | 2018 | 1A3bi (17.1%) | 1A3bii (11.8%) | 1A1a (11.7%) | 1A3dii (10.4%) | 1A2gviii (7.7%) | 1A1c (6.2%) | 1A3biii (4.1%) | 1A4bi (4.1%) | 1A2gvii (3.7%) | 1A4ai (3.2%) | 1A2f (2.1%) | 82.0% | ||
| NMVOC | 2018 | 2D3a (18.6%) | 2H2 (13.7%) | 2D3d (9.8%) | 1B2c (6.0%) | 1A4bi (5.9%) | 1B2ai (4.2%) | 2D3i (4.1%) | 3B1a (3.3%) | 3B1b (3.3%) | 3Da2a (3.1%) | 1B2b (2.8%) | 1B2av (2.8%) | 1B2aiv (2.5%) | 80.1% |
| SOx | 2018 | 1A4bi (25.5%) | 1A1b (14.8%) | 1A1a (14.1%) | 1A2gviii (12.0%) | 1A3dii (7.1%) | 1A2a (5.6%) | 2A6 (3.8%) | 82.8% | ||||||
| NH3 | 2018 | 3Da2a (22.3%) | 3Da1 (16.1%) | 3B1a (12.9%) | 3B1b (12.8%) | 3Da3 (6.4%) | 6A (4.9%) | 3B3 (4.8%) | 80.1% | ||||||
| PM2.5 | 2018 | 1A4bi (43.4%) | 1A2gviii (13.4%) | 1A3bvi (5.3%) | 2A5b (3.1%) | 1A2gvii (2.9%) | 1A3bvii (2.7%) | 1A3bi (2.3%) | 2C1 (2.2%) | 1A3dii (2.1%) | 1A1a (2.1%) | 5E (1.7%) | 81.4% | ||
| PM10 | 2018 | 1A4bi (27.1%) | 2A5b (18.7%) | 1A2gviii (8.4%) | 1A3bvi (5.8%) | 2A5a (5.4%) | 3Dc (4.5%) | 1A3bvii (3.1%) | 2C1 (2.3%) | 1A2gvii (1.8%) | 1A1a (1.5%) | 1A3bi (1.4%) | 80.0% | ||
| TSP | 2018 | 2A5b (53.0%) | 1A4bi (12.1%) | 2A5a (4.6%) | 3Dc (3.7%) | 1A2gviii (3.7%) | 1A3bvi (3.4%) | 80.6% | |||||||
| BC | 2018 | 1A4bi (23.9%) | 1A2gviii (22.7%) | 1A2gvii (10.8%) | 1A3bvi (8.2%) | 1A4cii (6.5%) | 1A3dii (4.3%) | 5E (4.3%) | 80.7% | ||||||
| CO | 2018 | 1A4bi (29.0%) | 1A2gvii (15.9%) | 1A3bi (12.5%) | 1A2a (6.7%) | 2C1 (4.9%) | 1A4bii (4.7%) | 1A2gviii (4.6%) | 1A1a (3.5%) | 81.8% | |||||
| Pb | 2018 | 1A3bvi (32.5%) | 2C1 (21.6%) | 1A2gviii (9.6%) | 2G (8.6%) | 1A4bi (5.3%) | 2C7c (4.1%) | 81.8% | |||||||
| Cd | 2018 | 1A4bi (28.6%) | 1A2gviii (27.8%) | 2C1 (12.8%) | 1A3bi (5.2%) | 2G (4.8%) | 1A3bvi (3.6%) | 82.7% | |||||||
| Hg | 2018 | 1A1a (17.6%) | 5C1bv (15.8%) | 2C1 (12.1%) | 1A2gviii (9.4%) | 5A (8.7%) | 2C7c (6.1%) | 2B10a (5.7%) | 1A4bi (5.3%) | 80.5% | |||||
| As | 2018 | 5C2 (61.7%) | 2C1 (19.0%) | 80.6% | |||||||||||
| Cr | 2018 | 1A3bvi (30.6%) | 5C2 (23.9%) | 2C1 (10.1%) | 1A4bi (9.3%) | 1A2gviii (6.0%) | 1A1a (5.8%) | 85.7% | |||||||
| Cu | 2018 | 1A3bvi (90.4%) | 90.4% | ||||||||||||
| Ni | 2018 | 1A4bi (55.2%) | 1A2gviii (12.3%) | 1A3dii (7.0%) | 2C1 (5.3%) | 1A1b (2.6%) | 82.4% | ||||||||
| Se | 2018 | 1A1a (29.9%) | 2A3 (16.3%) | 1A4bi (12.3%) | 2C1 (10.2%) | 1A2f (4.4%) | 1A2gviii (4.0%) | 1A3bvi (3.2%) | 80.4% | ||||||
| Zn | 2018 | 1A2gviii (28.1%) | 1A3bvi (22.3%) | 2C1 (18.0%) | 1A4bi (10.1%) | 1A3bi (9.1%) | 87.6% | ||||||||
| DIOX | 2018 | 1A4bi (36.6%) | 2C1 (12.6%) | 5E (12.3%) | 1A2gviii (11.1%) | 5C2 (8.1%) | 80.7% | ||||||||
| PAH | 2018 | 1A4bi (86.3%) | 86.3% | ||||||||||||
| HCB | 2018 | 1A1a (64.9%) | 3Df (32.6%) | 97.5% | |||||||||||
| PCB | 2018 | 2K (56.3%) | 2C1 (19.0%) | 5E (12.6%) | 87.9% | ||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2010 | 1A1a (20.1%) | 1A3bi (14.0%) | 1A3biii (12.6%) | 1A3dii (8.8%) | 1A2gviii (5.9%) | 1A3bii (5.2%) | 1A2gvii (5.2%) | 1A1c (4.8%) | 1A4bi (3.3%) | 1A4cii (2.4%) | 82.4% | ||||||
| NMVOC | 2010 | 2D3a (15.8%) | 2H2 (10.4%) | 2D3d (9.8%) | 1B2ai (5.1%) | 1A4bi (4.9%) | 1A3bi (4.7%) | 2D3i (4.1%) | 1B2b (4.1%) | 3B1b (3.4%) | 1B2av (3.3%) | 1B2c (3.0%) | 1B1a (2.9%) | 3B1a (2.7%) | 1B2aiv (2.4%) | 2B10a (2.4%) | 3Da2a (2.4%) | 81.4% |
| SOx | 2010 | 1A1a (38.6%) | 1A1b (12.6%) | 1A4bi (9.4%) | 1A2gviii (9.0%) | 1A3dii (6.8%) | 1A2b (5.1%) | 81.6% | ||||||||||
| NH3 | 2010 | 3Da2a (22.2%) | 3Da1 (15.9%) | 3B1b (14.9%) | 3B1a (12.5%) | 3Da3 (6.8%) | 6A (5.1%) | 3B3 (4.8%) | 82.1% | |||||||||
| PM2.5 | 2010 | 1A4bi (37.4%) | 1A2gviii (8.7%) | 1A2gvii (5.1%) | 1A3bi (4.8%) | 1A3bvi (4.4%) | 1A1a (3.6%) | 1A3bii (3.5%) | 1A3dii (3.0%) | 2A5b (2.4%) | 1A4cii (2.4%) | 1A3bvii (2.3%) | 2C1 (2.1%) | 1A3biii (2.1%) | 81.7% | |||
| PM10 | 2010 | 1A4bi (24.4%) | 2A5b (15.5%) | 1A2gviii (5.7%) | 2A5a (5.3%) | 1A3bvi (5.1%) | 3Dc (4.2%) | 1A1a (3.5%) | 1A2gvii (3.2%) | 1A3bi (3.1%) | 1A3bvii (2.7%) | 2C1 (2.5%) | 1A3bii (2.3%) | 1A3dii (2.0%) | 1A4cii (1.5%) | 81.0% | ||
| TSP | 2010 | 2A5b (50.4%) | 1A4bi (11.3%) | 2A5a (4.8%) | 3Dc (3.6%) | 1A3bvi (3.0%) | 1A2gviii (2.6%) | 1A3bvii (2.4%) | 1A1a (2.0%) | 80.1% | ||||||||
| BC | 2010 | 1A3bi (14.1%) | 1A4bi (14.0%) | 1A2gvii (13.7%) | 1A3bii (13.0%) | 1A2gviii (10.7%) | 1A4cii (6.9%) | 1A3biii (6.4%) | 1A3bvi (4.9%) | 83.7% | ||||||||
| CO | 2010 | 1A3bi (31.3%) | 1A4bi (20.2%) | 1A2gvii (10.1%) | 1A2a (5.8%) | 1A1a (3.5%) | 1A4bii (3.4%) | 2C1 (3.2%) | 1A2gviii (2.8%) | 80.3% | ||||||||
| Pb | 2010 | 1A3bvi (28.2%) | 2C1 (21.8%) | 1A2gviii (11.3%) | 2G (9.2%) | 1A4bi (4.5%) | 2B10a (3.7%) | 2I (3.6%) | 82.4% | |||||||||
| Cd | 2010 | 1A4bi (19.7%) | 1A2gviii (17.0%) | 2C1 (15.7%) | 2G (7.8%) | 1A3bi (5.9%) | 1A2b (4.8%) | 1A3bvi (3.6%) | 1A1a (3.4%) | 2C7c (3.0%) | 81.0% | |||||||
| Hg | 2010 | 1A1a (22.2%) | 5C1bv (13.1%) | 2B10a (12.5%) | 1A2gviii (8.1%) | 2C1 (5.8%) | 5A (5.6%) | 1A1b (4.6%) | 1A2f (3.8%) | 2C7c (3.8%) | 1A4bi (2.9%) | 82.4% | ||||||
| As | 2010 | 5C2 (53.5%) | 2C1 (21.3%) | 1A2gviii (5.9%) | 80.7% | |||||||||||||
| Cr | 2010 | 1A3bvi (30.2%) | 5C2 (24.6%) | 1A4bi (7.3%) | 2C7c (5.7%) | 2C1 (5.6%) | 1A1a (5.2%) | 1A2gviii (4.5%) | 83.0% | |||||||||
| Cu | 2010 | 1A3bvi (87.6%) | 87.6% | |||||||||||||||
| Ni | 2010 | 1A4bi (28.3%) | 1A2gviii (27.0%) | 1A3dii (15.7%) | 1A1b (4.5%) | 1A2c (3.0%) | 1A4ai (2.2%) | 80.7% | ||||||||||
| Se | 2010 | 1A1a (39.7%) | 2A3 (29.4%) | 2C1 (6.1%) | 1A4bi (6.0%) | 81.1% | ||||||||||||
| Zn | 2010 | 1A2gviii (33.3%) | 1A3bvi (20.3%) | 2C1 (16.5%) | 1A3bi (9.4%) | 1A4bi (6.3%) | 85.8% | |||||||||||
| DIOX | 2010 | 1A4bi (30.2%) | 2C1 (18.7%) | 5E (12.5%) | 1A2gviii (7.5%) | 5C2 (7.1%) | 1A3bi (4.9%) | 80.9% | ||||||||||
| PAH | 2010 | 1A4bi (85.1%) | 85.1% | |||||||||||||||
| HCB | 2010 | 3Df (66.4%) | 1A1a (30.0%) | 96.4% | ||||||||||||||
| PCB | 2010 | 2K (59.5%) | 2C1 (17.9%) | 5E (9.7%) | 87.1% | |||||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2005 | 1A1a (21.9%) | 1A3bi (17.0%) | 1A3biii (12.9%) | 1A3dii (7.7%) | 1A2gvii (5.5%) | 1A2gviii (5.1%) | 1A3bii (4.3%) | 1A1c (4.2%) | 1A4cii (3.1%) | 81.8% | |||||||
| NMVOC | 2005 | 2D3a (11.7%) | 1A3bi (11.3%) | 2D3d (10.8%) | 2H2 (7.3%) | 1B2ai (7.1%) | 1B2av (4.3%) | 1B2b (3.9%) | 1A3bv (3.7%) | 2D3i (3.6%) | 2B10a (3.2%) | 1B2aiv (2.8%) | 3B1b (2.7%) | 1B1a (2.7%) | 1A4bi (2.4%) | 1A2gvii (2.2%) | 1B2c (1.9%) | 81.5% |
| SOx | 2005 | 1A1a (50.2%) | 1A1b (9.7%) | 1A3dii (9.2%) | 1A4bi (5.4%) | 1A2gviii (4.7%) | 1A2b (4.0%) | 83.2% | ||||||||||
| NH3 | 2005 | 3Da2a (22.5%) | 3B1b (14.8%) | 3Da1 (14.0%) | 3B1a (10.9%) | 3Da3 (6.9%) | 1A3bi (6.1%) | 3B3 (5.7%) | 80.8% | |||||||||
| PM2.5 | 2005 | 1A4bi (22.6%) | 1A2gvii (7.5%) | 1A3dii (7.2%) | 1A2gviii (5.9%) | 1A3bi (5.3%) | 1A3bii (4.8%) | 1A1a (4.6%) | 1A4cii (4.6%) | 1A3bvi (4.4%) | 1A3biii (3.7%) | 2A5b (2.6%) | 2C1 (2.5%) | 1A3bvii (2.3%) | 5E (2.1%) | 80.1% | ||
| PM10 | 2005 | 2A5b (16.2%) | 1A4bi (14.2%) | 2A5a (6.7%) | 1A3bvi (4.9%) | 1A1a (4.7%) | 1A3dii (4.7%) | 1A2gvii (4.6%) | 3Dc (3.7%) | 1A2gviii (3.7%) | 1A3bi (3.2%) | 1A3bii (3.0%) | 1A4cii (2.8%) | 2C1 (2.8%) | 1A3bvii (2.6%) | 1A3biii (2.3%) | 80.0% | |
| TSP | 2005 | 2A5b (47.7%) | 1A4bi (6.9%) | 2A5a (6.3%) | 3Dc (3.4%) | 1A3bvi (3.0%) | 1A1a (3.0%) | 1A3bvii (2.4%) | 2C1 (2.2%) | 1A3dii (2.2%) | 1A2gvii (2.1%) | 1A2gviii (1.8%) | 81.0% | |||||
| BC | 2005 | 1A2gvii (16.6%) | 1A3bii (14.0%) | 1A3bi (13.2%) | 1A4cii (10.9%) | 1A3biii (9.0%) | 1A2gviii (7.4%) | 1A4bi (6.8%) | 1A3dii (5.2%) | 83.1% | ||||||||
| CO | 2005 | 1A3bi (48.8%) | 1A4bi (10.3%) | 1A2a (7.3%) | 1A2gvii (6.9%) | 1A3bii (3.2%) | 1A3biv (2.7%) | 2C1 (2.6%) | 81.9% | |||||||||
| Pb | 2005 | 2C1 (26.9%) | 1A3bvi (19.2%) | 2G (10.0%) | 2B10a (8.9%) | 1A2gviii (7.6%) | 1A1a (6.6%) | 2C7c (4.8%) | 84.1% | |||||||||
| Cd | 2005 | 2C1 (20.9%) | 1A1a (19.3%) | 1A2gviii (11.5%) | 1A4bi (9.9%) | 2G (7.2%) | 1A3bi (5.5%) | 2C7c (3.2%) | 1A3bvi (3.2%) | 80.9% | ||||||||
| Hg | 2005 | 1A1a (30.9%) | 2B10a (15.2%) | 5C1bv (12.2%) | 2C7c (7.0%) | 2C1 (6.4%) | 5A (5.0%) | 1A2gviii (4.0%) | 80.6% | |||||||||
| As | 2005 | 5C2 (47.8%) | 2C1 (27.4%) | 1A2gviii (5.1%) | 80.3% | |||||||||||||
| Cr | 2005 | 1A3bvi (21.8%) | 2B10a (18.8%) | 5C2 (17.2%) | 1A1a (8.7%) | 2C1 (7.4%) | 2C7c (6.8%) | 80.7% | ||||||||||
| Cu | 2005 | 1A3bvi (84.6%) | 84.6% | |||||||||||||||
| Ni | 2005 | 1A2gviii (25.3%) | 1A4bi (24.8%) | 1A3dii (17.3%) | 1A1b (5.8%) | 1A1a (3.7%) | 2C3 (2.5%) | 2C1 (2.4%) | 81.8% | |||||||||
| Se | 2005 | 1A1a (46.5%) | 2A3 (33.4%) | 2C1 (5.8%) | 85.7% | |||||||||||||
| Zn | 2005 | 1A2gviii (31.5%) | 2C1 (21.1%) | 1A3bvi (18.6%) | 1A3bi (9.4%) | 80.7% | ||||||||||||
| DIOX | 2005 | 1A4bi (20.4%) | 5E (19.2%) | 5C2 (16.2%) | 2C1 (13.8%) | 1A3bi (4.9%) | 5C1bv (4.2%) | 1A1a (3.9%) | 82.6% | |||||||||
| PAH | 2005 | 1A4bi (61.8%) | 5C2 (16.8%) | 5E (6.2%) | 84.8% | |||||||||||||
| HCB | 2005 | 3Df (54.6%) | 2B10a (33.1%) | 87.7% | ||||||||||||||
| PCB | 2005 | 2K (59.3%) | 2C1 (15.5%) | 5E (10.0%) | 84.8% | |||||||||||||