Technical Annual Status Report (Stage 2) for the CLRTAP Inventory Review: Synthesis and Assessment Country report
KEY CATEGORY ANALYSIS
Party: CH Submission year: 2026
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 2024, 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 | 2024 | 1A3bi (28.2%) | 1A4bi (8.0%) | 1A3biii (7.5%) | 1A3bii (6.7%) | 1A4ai (6.2%) | 1A1a (6.0%) | 1A2f (5.9%) | 1A3ai(i) (4.9%) | 1A4cii (3.5%) | 3Da2a (3.5%) | 80.5% | ||||
| NMVOC | 2024 | 2D3d (11.7%) | 3B1b (10.7%) | 2D3a (9.3%) | 3B1a (9.2%) | 2G (8.9%) | 2D3h (5.0%) | 1A3bi (5.0%) | 2D3g (4.5%) | 2D3b (3.7%) | 1A3bv (3.1%) | 1A4bi (3.1%) | 1B2av (2.7%) | 2D3i (2.7%) | 2D3e (2.2%) | 81.9% |
| SOx | 2024 | 1A2f (31.3%) | 1A1a (13.5%) | 1A4bi (9.9%) | 2B5 (9.2%) | 1A2gviii (7.8%) | 1A3ai(i) (7.0%) | 1A4ai (3.5%) | 82.2% | |||||||
| NH3 | 2024 | 3Da2a (30.0%) | 3B1a (19.6%) | 3B1b (15.9%) | 3B3 (8.3%) | 3Da1 (6.3%) | 3Da3 (3.3%) | 83.3% | ||||||||
| PM2.5 | 2024 | 1A4bi (28.7%) | 1A3bvi (15.0%) | 1A4ai (6.8%) | 1A2gvii (6.4%) | 2G (6.2%) | 1A3c (4.1%) | 5C1a (3.6%) | 1A4ci (3.3%) | 2H1 (2.9%) | 2H2 (2.8%) | 1A2gviii (2.7%) | 82.5% | |||
| PM10 | 2024 | 1A3bvi (17.7%) | 1A2gvii (17.1%) | 1A4bi (13.1%) | 1A3c (11.6%) | 3De (7.2%) | 2G (3.6%) | 1A4ai (3.1%) | 2A5a (2.3%) | 2H2 (2.2%) | 1A5b (1.9%) | 5C1a (1.7%) | 81.7% | |||
| TSP | 2024 | 3De (36.0%) | 1A2gvii (12.7%) | 1A3bvi (8.8%) | 1A3c (7.7%) | 1A4bi (6.8%) | 2A5a (2.7%) | 3B4gi (2.6%) | 3B3 (2.2%) | 2G (1.8%) | 81.3% | |||||
| BC | 2024 | 1A4bi (50.6%) | 1A3bvi (11.5%) | 1A4ai (9.4%) | 1A4cii (8.9%) | 80.4% | ||||||||||
| CO | 2024 | 1A3bi (33.4%) | 1A4bi (17.5%) | 1A4cii (9.0%) | 1A2f (5.9%) | 1A4aii (4.9%) | 1A4ai (4.6%) | 1A3dii (3.8%) | 1A2gvii (3.0%) | 82.0% | ||||||
| Pb | 2024 | 1A1a (24.2%) | 6A (20.5%) | 5C1a (19.3%) | 1A3aii(i) (8.5%) | 1A2gviii (6.7%) | 2G (5.0%) | 84.1% | ||||||||
| Cd | 2024 | 1A1a (39.4%) | 1A3bvi (21.4%) | 2G (6.9%) | 1A4bi (6.1%) | 1A2f (5.8%) | 1A2gvii (4.8%) | 84.4% | ||||||||
| Hg | 2024 | 1A1a (54.0%) | 1A2f (9.3%) | 1A4bi (8.5%) | 2C1 (6.8%) | 1A2gviii (4.6%) | 83.1% | |||||||||
| DIOX | 2024 | 1A4bi (34.2%) | 5C1a (20.1%) | 1A1a (9.8%) | 1A4ai (9.1%) | 6A (8.0%) | 81.1% | |||||||||
| PAH | 2024 | 1A4bi (57.3%) | 1A4ai (11.1%) | 5C2 (8.4%) | 1A3bi (7.9%) | 84.7% | ||||||||||
| HCB | 2024 | 1A1a (55.8%) | 1A4bi (24.8%) | 80.5% | ||||||||||||
| PCB | 2024 | 2K (89.2%) | 89.2% | |||||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2010 | 1A3bi (28.8%) | 1A3biii (18.5%) | 1A4bi (8.5%) | 1A3bii (6.3%) | 1A2gvii (5.7%) | 1A2f (5.0%) | 1A4ai (4.4%) | 1A4cii (4.2%) | 81.5% | ||||||
| NMVOC | 2010 | 2D3d (11.5%) | 1A3bi (10.6%) | 2D3a (7.5%) | 3B1b (7.1%) | 3B1a (6.9%) | 2G (6.9%) | 2D3h (6.2%) | 1A4bi (5.0%) | 2D3g (4.9%) | 1B2av (4.1%) | 1A3bv (2.9%) | 2D3e (2.6%) | 2D3b (2.6%) | 1A3biv (2.3%) | 81.1% |
| SOx | 2010 | 1A4bi (29.0%) | 1A2f (16.2%) | 1A1b (14.0%) | 1A4ai (11.2%) | 1A2gviii (7.4%) | 2B5 (6.4%) | 84.3% | ||||||||
| NH3 | 2010 | 3Da2a (34.4%) | 3B1a (17.4%) | 3B1b (12.8%) | 3B3 (9.5%) | 3Da1 (6.0%) | 80.2% | |||||||||
| PM2.5 | 2010 | 1A4bi (37.6%) | 1A3bvi (7.7%) | 1A4ai (7.1%) | 1A2gviii (5.2%) | 1A3bi (4.8%) | 2G (4.3%) | 1A2gvii (4.2%) | 1A4cii (2.9%) | 5C1a (2.7%) | 1A3bii (2.6%) | 1A3biii (2.5%) | 81.7% | |||
| PM10 | 2010 | 1A4bi (23.3%) | 1A3bvi (13.4%) | 1A2gvii (11.9%) | 1A3c (6.6%) | 3De (5.3%) | 1A4ai (4.4%) | 2G (3.3%) | 1A2gviii (3.3%) | 1A3bi (2.8%) | 2A5a (2.1%) | 1A4cii (2.1%) | 5C1a (1.8%) | 80.4% | ||
| TSP | 2010 | 3De (30.7%) | 1A4bi (14.1%) | 1A2gvii (10.1%) | 1A3bvi (7.7%) | 1A3c (5.0%) | 2A5a (2.7%) | 1A4ai (2.7%) | 3B3 (2.3%) | 1A2gviii (2.0%) | 2G (1.9%) | 2I (1.7%) | 80.8% | |||
| BC | 2010 | 1A4bi (44.0%) | 1A3bi (12.6%) | 1A3bii (9.0%) | 1A3biii (7.5%) | 1A4cii (7.5%) | 80.5% | |||||||||
| CO | 2010 | 1A3bi (35.3%) | 1A4bi (21.1%) | 1A3biv (7.1%) | 1A4cii (7.1%) | 1A3bii (3.8%) | 1A2f (3.6%) | 1A4ai (3.6%) | 81.6% | |||||||
| Pb | 2010 | 6A (30.8%) | 5C1a (17.2%) | 1A1a (14.4%) | 1A2f (6.8%) | 1A2gviii (6.7%) | 1A3aii(i) (6.6%) | 82.6% | ||||||||
| Cd | 2010 | 1A1a (38.7%) | 1A3bvi (16.4%) | 1A2f (8.1%) | 1A4bi (8.0%) | 2G (5.1%) | 1A2gviii (4.8%) | 81.1% | ||||||||
| Hg | 2010 | 1A1a (42.8%) | 1A2f (15.3%) | 1A4bi (9.0%) | 5C1bv (7.1%) | 2C1 (6.5%) | 80.7% | |||||||||
| DIOX | 2010 | 1A4bi (37.8%) | 1A1a (13.4%) | 5C1a (13.2%) | 1A4ai (7.7%) | 1A2gviii (7.0%) | 1A3bi (5.4%) | 84.5% | ||||||||
| PAH | 2010 | 1A4bi (72.2%) | 1A4ai (8.8%) | 80.9% | ||||||||||||
| HCB | 2010 | 1A1a (39.1%) | 1A4bi (37.5%) | 1A4ai (10.7%) | 87.3% | |||||||||||
| PCB | 2010 | 2K (85.4%) | 85.4% | |||||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2005 | 1A3bi (26.8%) | 1A3biii (22.7%) | 1A4bi (8.4%) | 1A2gvii (7.0%) | 1A2f (5.0%) | 1A4cii (4.6%) | 1A3bii (4.6%) | 1A4ai (4.3%) | 83.3% | |||||||
| NMVOC | 2005 | 1A3bi (14.4%) | 2D3d (9.2%) | 2D3a (7.3%) | 2G (6.5%) | 2D3h (6.2%) | 3B1a (6.0%) | 3B1b (5.0%) | 1A4bi (4.9%) | 1B2av (4.4%) | 2D3g (4.3%) | 1A3bv (3.1%) | 2D3e (3.0%) | 1A3biv (2.8%) | 1A4cii (2.4%) | 2D3i (2.2%) | 81.7% |
| SOx | 2005 | 1A4bi (32.4%) | 1A4ai (12.8%) | 1A2f (12.7%) | 1A1b (8.6%) | 1A2d (6.6%) | 1A2gviii (6.3%) | 2B5 (3.8%) | 83.2% | ||||||||
| NH3 | 2005 | 3Da2a (33.7%) | 3B1a (17.5%) | 3B1b (11.0%) | 3B3 (10.4%) | 1A3bi (7.9%) | 80.4% | ||||||||||
| PM2.5 | 2005 | 1A4bi (39.7%) | 1A4ai (7.0%) | 1A3bvi (5.8%) | 1A2gvii (5.2%) | 1A2gviii (5.1%) | 1A3bi (4.9%) | 1A3biii (4.3%) | 2G (3.4%) | 1A3bii (2.9%) | 1A4cii (2.9%) | 81.4% | |||||
| PM10 | 2005 | 1A4bi (27.0%) | 1A2gvii (11.3%) | 1A3bvi (10.9%) | 1A3c (5.4%) | 3De (4.8%) | 1A4ai (4.8%) | 1A2gviii (3.4%) | 1A3bi (3.1%) | 1A3biii (2.8%) | 2G (2.8%) | 1A4cii (2.2%) | 1A3bii (1.9%) | 80.5% | |||
| TSP | 2005 | 3De (29.0%) | 1A4bi (17.1%) | 1A2gvii (9.7%) | 1A3bvi (6.6%) | 1A3c (4.3%) | 1A4ai (3.0%) | 2A5a (2.3%) | 1A2gviii (2.2%) | 3B3 (2.1%) | 1A3bi (1.9%) | 2I (1.7%) | 1A3biii (1.7%) | 81.6% | |||
| BC | 2005 | 1A4bi (41.2%) | 1A3bi (11.5%) | 1A3biii (10.6%) | 1A3bii (8.5%) | 1A2gvii (6.5%) | 1A4cii (6.4%) | 84.7% | |||||||||
| CO | 2005 | 1A3bi (38.9%) | 1A4bi (19.3%) | 1A3bii (7.0%) | 1A3biv (6.8%) | 1A4cii (6.7%) | 1A4ai (3.2%) | 82.0% | |||||||||
| Pb | 2005 | 6A (37.9%) | 5C1a (12.0%) | 1A1a (10.7%) | 2G (10.3%) | 1A2f (8.6%) | 1A3aii(i) (5.6%) | 85.1% | |||||||||
| Cd | 2005 | 1A1a (35.9%) | 1A3bvi (15.6%) | 1A2f (10.3%) | 1A4bi (8.6%) | 1A2gviii (5.1%) | 2G (4.5%) | 80.0% | |||||||||
| Hg | 2005 | 1A1a (46.4%) | 1A2f (13.1%) | 1A4bi (8.6%) | 5C1bv (7.9%) | 2C1 (6.3%) | 82.2% | ||||||||||
| DIOX | 2005 | 1A4bi (35.1%) | 1A1a (16.8%) | 5C1a (11.1%) | 1A2gviii (7.1%) | 1A4ai (7.1%) | 6A (5.0%) | 82.2% | |||||||||
| PAH | 2005 | 1A4bi (65.4%) | 2C3 (9.9%) | 1A4ai (9.1%) | 84.4% | ||||||||||||
| HCB | 2005 | 1A4bi (42.1%) | 1A1a (34.1%) | 1A4ai (10.8%) | 87.1% | ||||||||||||
| PCB | 2005 | 2K (72.4%) | 5E (19.4%) | 91.9% | |||||||||||||