Air Quality Model Regional Ozone Street Canyon Indicator Data Scenario Comparaison

Regional Ozone- Lisbon

Initial reference scenario

 

The analysis of the input data for Lisbon reveals that there are some basic background concentrations missing. In comparison to the GEA results, emissions are lower. Overall, no exceedances are observed and therefore the final reference scenario for Lisbon should be considered as one with zero exceedances (this is why no Figure is provided here). This results supports previous findings (Calheiros and Casimiro, 2001), that state that for the year 1999, available ozone concentration level information suggest no exceedances above the EU 1-hour threshold and no 8-hour exceedances of the WHO guideline and EU thresholds. Nevertheless, the same reference also stated that “preliminary analysis indicates that daily exposures in 1999 may have contributed up to 1.6% of all deaths (± 350 cases) and 1.9% of respiratory hospital admissions in Lisbon”, thus revealing the complex rela.tionship between exposure limit values and actual health related impacts.

 

 

AOT(max),

AOT(ave),

AOT(sub),

AOT(town)

AOT60

0

0

0

0

 

IND120(domain)

IND120(sub)

IND120(town)

 

DAYS

0

0

0

 

 

Final reference scenario

 

The final reference scenario demonstrates zero exceedances, as the initial one.

 

 

AOT(max),

AOT(ave),

AOT(sub),

AOT(town)

AOT60

0

0

0

0

 

IND120(domain)

IND120(sub)

IND120(town)

 

DAYS

0

0

0

 

 

«New Statistics»for Ozone

ST

ave_ofis

aot_ofis

ind_ofis

1

5.03

0

0

2

4.55

0

0

3

5.12

0

0

4

4.8

0

0

5

1.45

0

0

6

4.81

0

0

7

5.11

0

0

8

4.54

0

0

9

5.04

0

0

 


Scenario S1

The indicators resulting for this scenario are as follows (due to the zero IND120 values, no figure is provided).

 

 

AOT(max),

AOT(ave),

AOT(sub),

AOT(town)

AOT60

1.01

0.11

0.14

0.18

 

IND120(domain)

IND120(sub)

IND120(town)

 

DAYS

0

0

0

 

 

«New Statistics»for Ozone

ST

ave_ofis

aot_ofis

ind_ofis

1

4.16

0.01

0

2

3.89

0

0

3

4.28

0.11

1

4

4.28

0.09

1

5

2.88

0.22

1

6

4.49

0.43

1

7

4.24

0

0

8

3.9

0

0

9

4.37

0.13

1

 


Scenario S2

 

The indicators resulting for this scenario are as follows (due to the zero IND120 values, no figure is provided).

 

 

AOT(max),

AOT(ave),

AOT(sub),

AOT(town)

AOT60

0

0

0

0

 

IND120(domain)

IND120(sub)

IND120(town)

 

DAYS

0

0

0

 

 

«New Statistics»for Ozone

ST

ave_ofis

aot_ofis

ind_ofis

1

5.67

0

0

2

5.07

0

0

3

5.77

0

0

4

5.41

0

0

5

1.56

0

0

6

5.41

0

0

7

5.78

0

0

8

5.06

0

0

9

5.69

0

0

 

 


Scenario S3

 

Figure A.28. Number of days with 8hour running average ozone concentration exceeding 120µg/m3 (IND120), calculated by the OFIS model, for a 150x150km2 area surrounding Lisbon.

The indicators resulting for this scenario are as follows

 

 

AOT(max),

AOT(ave),

AOT(sub),

AOT(town)

AOT60

371.64

51.88

92.18

128.83

 

IND120(domain)

IND120(sub)

IND120(town)

 

DAYS

5

9

11

 

 

«New Statistics» for Ozone

ST

ave_ofis

aot_ofis

ind_ofis

1

5.61

5.58

3

2

8.11

17.7

2

3

11.75

31.82

2

4

25.93

83.87

5

5

55.25

162.07

10

6

37.87

127.81

13

7

4.83

3.76

2

8

9.31

22.42

2

9

32.43

115.37

11

 

Scenario S4

The indicators resulting for this scenario are as follows (due to the zero values, no figure is provided).

 

 

AOT(max),

AOT(ave),

AOT(sub),

AOT(town)

AOT60

0.01

0

0

0

 

IND120(domain)

IND120(sub)

IND120(town)

 

DAYS

0

0

0

 

 

«New Statistics»for Ozone

ST

ave_ofis

aot_ofis

ind_ofis

1

4.32

0

0

2

3.99

0

0

3

4.4

0

0

4

4.3

0

0

5

2.42

0

0

6

4.4

0

0

7

4.41

0

0

8

3.99

0

0

9

4.45

0

0

 

 


Scenario summary

 

The next figure provides with an overall summary of the indicators vs scenarios for Lisbon, indicating that the scenario performance is identical, with the pronounced exception of scenario S3.

 

Figure A.29. Overall summary of the indicators vs scenarios for Lisbon.


The same conclusion is supported by the next three diagrams (Figure A.30) concerning the “new statistics” introduced. Scenario 3 produces the most interesting (non zero) results, as it correlated to the lower ozone consumption pollutants, accompanied by scenario 1. It should be notes that the two scenarios result in similar indicators for some of the receptors (like int_ofis for receptor 3), while they correspond to very different indicator values for other receptors, thus pronouncing the influence of the meteorology over emission and concentration patterns.

 

 

Figure A.30. Receptors (x axis) and indicator values (y axis) for the Lisbon scenarios.