Technical Annual Status Report (Stage 2) for the CLRTAP Inventory Review: Synthesis and Assessment Country report
KEY CATEGORY ANALYSIS
Party: GB Submission year: 2024
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 2022, 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 | 2022 | 1A3bi (17.2%) | 1A3dii (11.0%) | 1A3bii (10.5%) | 1A1a (9.8%) | 1A2gviii (8.1%) | 1A1c (7.0%) | 1A4ai (6.0%) | 1A3biii (4.3%) | 1A4bi (3.9%) | 1A5b (1.9%) | 1A2f (1.8%) | 81.4% | ||||
| NMVOC | 2022 | 2D3a (22.1%) | 2H2 (15.6%) | 2D3d (7.3%) | 3Da2a (6.2%) | 2D3i (4.0%) | 3B1a (3.7%) | 3B1b (3.6%) | 1B2ai (3.2%) | 1A4bi (3.0%) | 1B2av (2.8%) | 1B2b (2.6%) | 2D3g (2.3%) | 1A3bv (2.1%) | 1A3bi (1.9%) | 80.4% | |
| SOx | 2022 | 1A4bi (30.5%) | 1A1b (14.1%) | 1A2gviii (14.0%) | 1A1a (7.2%) | 1A2a (5.9%) | 1B1b (5.2%) | 1A3dii (4.7%) | 81.6% | ||||||||
| NH3 | 2022 | 3Da2a (22.5%) | 3B1a (13.7%) | 3Da1 (13.3%) | 3B1b (13.0%) | 3Da3 (7.2%) | 3Da2c (6.3%) | 6A (6.3%) | 82.3% | ||||||||
| PM2.5 | 2022 | 1A4bi (28.5%) | 1A3bvi (11.4%) | 1A2gviii (6.5%) | 5C2 (6.0%) | 1A3bvii (4.5%) | 2A5b (4.2%) | 2C1 (3.0%) | 5E (2.7%) | 1A3dii (2.7%) | 2G (2.2%) | 2A6 (1.9%) | 1A4ai (1.8%) | 1A3bi (1.8%) | 1A1a (1.6%) | 2A5a (1.3%) | 80.3% |
| PM10 | 2022 | 2A5b (21.7%) | 1A4bi (14.9%) | 1A3bvi (11.3%) | 2A5a (6.9%) | 3Dc (5.3%) | 1A3bvii (4.3%) | 1A2gviii (3.5%) | 5C2 (3.3%) | 2C1 (2.6%) | 3B4gii (1.9%) | 2G (1.6%) | 2A6 (1.6%) | 3B4giv (1.5%) | 80.4% | ||
| TSP | 2022 | 2A5b (39.5%) | 1A4bi (8.6%) | 1A3bvi (7.9%) | 2A5a (7.7%) | 1A3bvii (4.7%) | 3Dc (2.9%) | 2C1 (2.6%) | 3B4gi (2.6%) | 3B4giv (2.2%) | 3B4gii (2.1%) | 80.8% | |||||
| BC | 2022 | 1A4bi (17.3%) | 5C2 (13.8%) | 1A3bvi (13.0%) | 1A3bi (7.0%) | 5E (6.3%) | 1A2gviii (6.1%) | 1A3dii (5.7%) | 1A4ai (4.0%) | 1A3bii (3.7%) | 1B1b (2.9%) | 1A4cii (2.7%) | 82.4% | ||||
| CO | 2022 | 1A2gvii (23.1%) | 1A4bi (18.6%) | 1A3bi (16.2%) | 1A4bii (5.9%) | 2C1 (4.4%) | 1A2a (4.2%) | 1A3dii (3.6%) | 1A2gviii (3.5%) | 1A1a (2.9%) | 82.4% | ||||||
| Pb | 2022 | 1A3bvi (34.8%) | 2C1 (30.7%) | 1A3aii(i) (6.7%) | 2G (6.6%) | 1A2gviii (4.8%) | 83.5% | ||||||||||
| Cd | 2022 | 2G (33.8%) | 1A2gviii (18.8%) | 2C1 (14.3%) | 1A4bi (9.9%) | 1A3bvi (4.4%) | 81.1% | ||||||||||
| Hg | 2022 | 1A1a (19.2%) | 5C1bv (10.4%) | 1A2gviii (9.8%) | 5A (9.3%) | 1A2f (9.0%) | 1A4bi (7.8%) | 2C1 (6.7%) | 2C7c (4.9%) | 1A3bi (3.9%) | 80.8% | ||||||
| As | 2022 | 5C2 (65.0%) | 2C1 (17.2%) | 82.2% | |||||||||||||
| Cr | 2022 | 1A3bvi (37.4%) | 5C2 (17.1%) | 2G (13.2%) | 2C1 (10.4%) | 1A1a (5.0%) | 83.0% | ||||||||||
| Cu | 2022 | 1A3bvi (58.8%) | 2G (37.9%) | 96.7% | |||||||||||||
| Ni | 2022 | 1A4bi (48.3%) | 1A2gviii (12.2%) | 2G (10.9%) | 1A3dii (6.5%) | 2C1 (3.7%) | 81.6% | ||||||||||
| Se | 2022 | 2G (19.6%) | 1A1a (18.8%) | 2A3 (15.6%) | 2C1 (9.8%) | 1A4bi (5.0%) | 1A2f (4.4%) | 1A3bvi (4.3%) | 1A4cii (2.7%) | 80.2% | |||||||
| Zn | 2022 | 2G (29.2%) | 1A3bvi (25.4%) | 1A2gviii (19.0%) | 2C1 (13.9%) | 87.5% | |||||||||||
| DIOX | 2022 | 5C2 (20.6%) | 5E (16.4%) | 2C1 (16.2%) | 1A4bi (16.0%) | 1A2gviii (13.7%) | 82.8% | ||||||||||
| PAH | 2022 | 1A4bi (89.3%) | 89.3% | ||||||||||||||
| HCB | 2022 | 1A1a (78.2%) | 3Df (19.0%) | 97.2% | |||||||||||||
| PCB | 2022 | 2K (44.6%) | 5C2 (21.0%) | 2C1 (17.7%) | 83.3% | ||||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2010 | 1A1a (20.0%) | 1A3bi (15.4%) | 1A3biii (14.3%) | 1A3dii (8.8%) | 1A1c (5.2%) | 1A3bii (5.1%) | 1A4ai (3.5%) | 1A4bi (3.5%) | 1A2gviii (3.3%) | 1A4cii (3.1%) | 82.2% | |||||||
| NMVOC | 2010 | 2D3a (18.7%) | 2H2 (9.6%) | 2D3d (8.9%) | 1A3bi (7.4%) | 1B2b (4.0%) | 2D3i (4.0%) | 1B2ai (3.7%) | 3Da2a (3.3%) | 3B1b (3.3%) | 1B2av (3.0%) | 1B2c (2.8%) | 3B1a (2.6%) | 1B1a (2.6%) | 1A3bv (2.4%) | 1B2aiv (2.2%) | 1A4bi (2.2%) | 80.9% | |
| SOx | 2010 | 1A1a (37.5%) | 1A1b (12.3%) | 1A2gviii (9.4%) | 1A4bi (7.0%) | 1A3dii (6.7%) | 1A2b (6.0%) | 1B1b (4.1%) | 83.1% | ||||||||||
| NH3 | 2010 | 3Da2a (23.5%) | 3Da1 (15.7%) | 3B1b (14.6%) | 3B1a (11.4%) | 3Da3 (7.1%) | 6A (5.1%) | 1A3bi (4.6%) | 82.0% | ||||||||||
| PM2.5 | 2010 | 1A4bi (18.8%) | 1A3bvi (8.0%) | 1A3bi (6.3%) | 1A1a (5.1%) | 5C2 (4.4%) | 1A3dii (4.1%) | 1A3bii (4.1%) | 1A2gviii (4.0%) | 2A5b (3.6%) | 1A3biii (3.4%) | 1A3bvii (3.2%) | 1A4cii (3.1%) | 2C1 (2.9%) | 1A2gvii (2.7%) | 5E (2.4%) | 2G (2.4%) | 1A4ai (1.7%) | 80.1% |
| PM10 | 2010 | 2A5b (19.7%) | 1A4bi (10.6%) | 1A3bvi (8.6%) | 2A5a (6.4%) | 1A1a (4.3%) | 3Dc (4.2%) | 1A3bi (3.5%) | 1A3bvii (3.2%) | 2C1 (3.0%) | 5C2 (2.6%) | 1A2gviii (2.5%) | 1A3dii (2.4%) | 1A3bii (2.3%) | 1A3biii (1.9%) | 1A4cii (1.7%) | 2G (1.7%) | 1A2gvii (1.5%) | 80.1% |
| TSP | 2010 | 2A5b (37.6%) | 2A5a (7.5%) | 1A4bi (6.4%) | 1A3bvi (6.3%) | 1A3bvii (3.7%) | 1A1a (3.2%) | 2C1 (3.1%) | 3Dc (2.4%) | 3B4gi (2.0%) | 1A3bi (2.0%) | 3B4giv (1.9%) | 3B4gii (1.6%) | 5C2 (1.5%) | 1A2gviii (1.5%) | 80.8% | |||
| BC | 2010 | 1A3bi (18.6%) | 1A3bii (12.6%) | 1A3biii (8.8%) | 1A4cii (7.8%) | 5C2 (6.9%) | 1A4bi (6.5%) | 1A3bvi (6.3%) | 1A2gvii (6.1%) | 1A3dii (4.2%) | 5E (3.7%) | 81.6% | |||||||
| CO | 2010 | 1A3bi (38.3%) | 1A2gvii (12.9%) | 1A4bi (11.3%) | 1A2a (5.7%) | 1A1a (3.5%) | 1A4bii (3.4%) | 2C1 (3.2%) | 1A3bii (2.4%) | 80.6% | |||||||||
| Pb | 2010 | 1A3bvi (35.8%) | 2C1 (16.1%) | 1A3aii(i) (10.4%) | 1A2gviii (7.9%) | 2G (6.7%) | 1A4bi (3.2%) | 80.1% | |||||||||||
| Cd | 2010 | 2G (40.9%) | 2C1 (13.6%) | 1A2gviii (6.9%) | 1A4bi (5.9%) | 1A3bvi (5.0%) | 1A2b (4.2%) | 1A1a (3.3%) | 2C7c (2.7%) | 82.4% | |||||||||
| Hg | 2010 | 1A1a (21.3%) | 5C1bv (12.1%) | 2B10a (11.6%) | 1A2gviii (9.1%) | 2C1 (5.4%) | 5A (5.2%) | 1A4bi (4.6%) | 1A1b (4.3%) | 2C7c (3.8%) | 1A2f (3.6%) | 81.0% | |||||||
| As | 2010 | 5C2 (52.8%) | 2C1 (21.0%) | 1A2gviii (5.9%) | 1A1a (4.8%) | 84.5% | |||||||||||||
| Cr | 2010 | 1A3bvi (39.0%) | 5C2 (18.2%) | 2G (13.6%) | 2C7c (4.4%) | 2C1 (4.2%) | 1A1a (4.0%) | 83.3% | |||||||||||
| Cu | 2010 | 1A3bvi (58.4%) | 2G (37.2%) | 95.6% | |||||||||||||||
| Ni | 2010 | 1A4bi (26.0%) | 1A2gviii (24.6%) | 1A3dii (14.4%) | 2G (7.8%) | 1A1b (4.1%) | 1A2c (2.8%) | 1A4ai (2.0%) | 81.6% | ||||||||||
| Se | 2010 | 1A1a (37.4%) | 2A3 (28.4%) | 2G (8.1%) | 2C1 (5.8%) | 1A2f (3.1%) | 82.7% | ||||||||||||
| Zn | 2010 | 2G (26.4%) | 1A2gviii (25.4%) | 1A3bvi (22.7%) | 2C1 (13.7%) | 88.1% | |||||||||||||
| DIOX | 2010 | 2C1 (23.9%) | 5C2 (17.1%) | 5E (16.6%) | 1A4bi (13.5%) | 1A2gviii (7.3%) | 1A3bi (6.4%) | 84.9% | |||||||||||
| PAH | 2010 | 1A4bi (88.7%) | 88.7% | ||||||||||||||||
| HCB | 2010 | 3Df (64.9%) | 1A1a (29.0%) | 94.0% | |||||||||||||||
| PCB | 2010 | 2K (55.4%) | 2C1 (17.6%) | 5C2 (11.8%) | 84.8% | ||||||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2005 | 1A1a (22.5%) | 1A3bi (16.8%) | 1A3biii (14.1%) | 1A3dii (7.9%) | 1A1c (4.4%) | 1A3bii (4.1%) | 1A2gviii (3.3%) | 1A4ai (3.0%) | 1A4cii (3.0%) | 1A4bi (2.8%) | 81.9% | ||||||||
| NMVOC | 2005 | 2D3a (13.0%) | 1A3bi (11.7%) | 2D3d (10.1%) | 1B2ai (7.1%) | 2H2 (6.9%) | 1B2av (4.1%) | 1B2b (3.8%) | 1A3bv (3.6%) | 2D3i (3.5%) | 2B10a (3.0%) | 3B1b (2.6%) | 1B2aiv (2.6%) | 3Da2a (2.5%) | 1B1a (2.5%) | 3B1a (1.9%) | 1B2c (1.8%) | 80.9% | ||
| SOx | 2005 | 1A1a (49.6%) | 1A1b (9.6%) | 1A3dii (9.1%) | 1A4bi (5.5%) | 1A2gviii (4.6%) | 1A2b (4.4%) | 82.8% | ||||||||||||
| NH3 | 2005 | 3Da2a (24.2%) | 3B1b (14.4%) | 3Da1 (13.3%) | 3B1a (10.1%) | 3Da3 (7.4%) | 1A3bi (6.3%) | 3B3 (5.2%) | 80.9% | |||||||||||
| PM2.5 | 2005 | 1A4bi (15.8%) | 1A3dii (8.4%) | 1A3bvi (6.1%) | 1A1a (5.4%) | 1A3bi (5.3%) | 1A3biii (5.1%) | 1A3bii (4.2%) | 1A2gvii (4.1%) | 1A4cii (3.8%) | 5C2 (3.5%) | 2A5b (3.2%) | 2C1 (2.9%) | 1A2gviii (2.7%) | 1A3bvii (2.4%) | 5E (2.4%) | 2G (2.3%) | 2A6 (1.7%) | 1A4ai (1.7%) | 81.1% |
| PM10 | 2005 | 2A5b (18.2%) | 1A4bi (9.3%) | 2A5a (7.2%) | 1A3bvi (6.9%) | 1A1a (5.1%) | 1A3dii (5.1%) | 3Dc (3.3%) | 1A3bi (3.1%) | 2C1 (3.0%) | 1A3biii (2.9%) | 1A3bvii (2.6%) | 1A3bii (2.4%) | 1A2gvii (2.4%) | 1A4cii (2.2%) | 5C2 (2.1%) | 2G (1.8%) | 1A2gviii (1.8%) | 2A6 (1.6%) | 81.0% |
| TSP | 2005 | 2A5b (35.8%) | 2A5a (8.7%) | 1A4bi (5.8%) | 1A3bvi (5.1%) | 1A1a (4.1%) | 2C1 (3.1%) | 1A3bvii (3.1%) | 1A3dii (3.0%) | 3Dc (2.0%) | 1A3bi (1.8%) | 3B4gi (1.7%) | 1A3biii (1.7%) | 3B4giv (1.5%) | 1A3bii (1.4%) | 1A2gvii (1.4%) | 80.3% | |||
| BC | 2005 | 1A3bi (14.0%) | 1A3bii (11.9%) | 1A3biii (11.8%) | 1A2gvii (9.1%) | 1A4cii (9.1%) | 1A3dii (6.1%) | 5C2 (5.3%) | 1A4bi (4.9%) | 1A3bvi (4.9%) | 5E (3.6%) | 80.6% | ||||||||
| CO | 2005 | 1A3bi (44.0%) | 1A2gvii (13.8%) | 1A4bi (7.6%) | 1A2a (7.5%) | 1A3bii (2.9%) | 2C1 (2.7%) | 1A1a (2.4%) | 81.0% | |||||||||||
| Pb | 2005 | 1A3bvi (23.7%) | 2C1 (19.5%) | 1A3aii(i) (16.5%) | 2G (7.2%) | 2B10a (6.5%) | 1A2gviii (5.4%) | 1A1a (4.7%) | 83.4% | |||||||||||
| Cd | 2005 | 2G (33.3%) | 2C1 (17.1%) | 1A1a (15.6%) | 1A2gviii (6.0%) | 1A4bi (5.0%) | 1A3bvi (4.0%) | 81.1% | ||||||||||||
| Hg | 2005 | 1A1a (29.1%) | 2B10a (14.3%) | 5C1bv (11.4%) | 2C1 (6.0%) | 2C7c (5.7%) | 1A2gviii (5.6%) | 5A (4.7%) | 1A4bi (3.9%) | 80.6% | ||||||||||
| As | 2005 | 5C2 (47.4%) | 2C1 (27.2%) | 1A2gviii (5.1%) | 1A1a (3.2%) | 82.8% | ||||||||||||||
| Cr | 2005 | 1A3bvi (30.0%) | 2B10a (15.0%) | 5C2 (13.8%) | 2G (10.5%) | 1A1a (7.0%) | 2C1 (5.9%) | 82.2% | ||||||||||||
| Cu | 2005 | 1A3bvi (57.8%) | 2G (36.8%) | 94.6% | ||||||||||||||||
| Ni | 2005 | 1A2gviii (23.2%) | 1A4bi (22.9%) | 1A3dii (16.2%) | 2G (6.8%) | 1A1b (5.4%) | 1A1a (3.5%) | 2C3 (2.3%) | 80.2% | |||||||||||
| Se | 2005 | 1A1a (44.1%) | 2A3 (33.3%) | 2C1 (5.7%) | 83.0% | |||||||||||||||
| Zn | 2005 | 1A2gviii (25.2%) | 2G (24.3%) | 1A3bvi (20.8%) | 2C1 (17.6%) | 87.9% | ||||||||||||||
| DIOX | 2005 | 5C2 (26.6%) | 5E (22.3%) | 2C1 (16.0%) | 1A4bi (10.1%) | 1A3bi (5.6%) | 80.6% | |||||||||||||
| PAH | 2005 | 1A4bi (78.1%) | 5C2 (11.6%) | 89.7% | ||||||||||||||||
| HCB | 2005 | 3Df (53.7%) | 2B10a (32.6%) | 86.3% | ||||||||||||||||
| PCB | 2005 | 2K (59.5%) | 2C1 (14.4%) | 5C2 (11.7%) | 85.6% | |||||||||||||||