| Year | A1B | A1T | A1FI | A2 | B1 | B2 | A1p | A2p | B1p | B2p | IS92a | IS92a/SAR |
|
||||||||||||
| 1990 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 |
| 2000 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.0 | 34.3 |
| 2010 | 35.8 | 35.6 | 35.8 | 35.7 | 34.8 | 35.2 | 36.2 | 35.6 | 34.3 | 35.4 | 35.5 | 34.8 |
| 2020 | 37.8 | 37.7 | 38.4 | 38.2 | 35.6 | 36.7 | 38.8 | 38.2 | 35.4 | 37.1 | 37.1 | 35.3 |
| 2030 | 39.3 | 40.3 | 41.5 | 40.8 | 35.9 | 38.4 | 40.5 | 40.7 | 35.7 | 38.5 | 38.7 | 35.8 |
| 2040 | 39.7 | 41.9 | 45.1 | 42.6 | 35.8 | 39.8 | 41.3 | 42.4 | 36.5 | 39.9 | 40.1 | 36.5 |
| 2050 | 39.8 | 42.9 | 49.6 | 44.2 | 35.0 | 40.7 | 41.6 | 44.1 | 37.5 | 40.6 | 41.6 | 37.1 |
| 2060 | 39.6 | 43.1 | 51.9 | 45.7 | 34.0 | 41.5 | 41.8 | 45.6 | 37.7 | 41.2 | 42.9 | 37.7 |
| 2070 | 39.1 | 41.9 | 53.8 | 47.2 | 33.1 | 42.1 | 41.4 | 47.1 | 37.9 | 41.6 | 44.0 | 38.2 |
| 2080 | 38.5 | 40.2 | 55.9 | 49.3 | 32.1 | 43.0 | 40.8 | 49.1 | 38.1 | 42.3 | 45.1 | 38.7 |
| 2090 | 38.0 | 38.4 | 55.6 | 52.0 | 31.2 | 43.7 | 39.9 | 51.8 | 36.8 | 42.6 | 46.1 | 39.1 |
| 2100 | 37.5 | 36.5 | 55.2 | 54.8 | 30.1 | 44.2 | 38.9 | 54.7 | 35.2 | 42.8 | 47.2 | 39.5 |
|
Note: IS92a/SAR column refers to IS92a emissions as reported
in the SAR which estimated this O3 change only as
an indirect feedback effect from CH4 increases; whereas IS92a
column uses the latest models (see Chapter 4) which
include also changes in emissions of NOx, CO and
VOC. A mean tropospheric O3 content of 34 DU in
1990 is adopted; and 1 ppb of tropospheric O3 =
0.65 DU.
These projected increases in troposheric O3
are likely to be 25% too large, see note to Table
4.11 of Chapter 4 describing corrections made
after government review.
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Other reports in this collection |
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