AQ Indicators Based on Ambient Air Directives

National ReportingJaroslav Fiala

Czech Hydrometeorological Institute

Prague, Czech Republic

Background

The drawbacks of currently applied AP indicators:

• low robustness (are subjected to peak values fluctuations)

• not harmonised with national AQ reporting• influenced by great differences in the number of

stations in a individual country

Ambient Air Directives: Legal Base for AQ Indicator Reporting

FWD and DDs:• Define the common strategy and basic principles for air quality

assessment and management• Specify common methods and criteria for the ambient air quality

assessment• Require to apply these methods for the whole territory of a member

state and to classify regions (zones) according to the adopted common air quality levels set by the DD

=>

• The member states must identify the area of their territory on which the limit values (and limit values plus margin of tolerance) are exceeded

• By analogy, they are able to determine a portion of the population exposed to limit values exceedances

AQ indicators :

AQIhealth

~ % of population within zones (areas) where limit values (and LV +MT) for protection of health are exceeded

AQIecosystems

~ % of territory (zones) where limit values for protection of ecosystems and vegetation are exceeded

This indicators do not represent any additional burden on a national level

Example of assessment based on Ambient AQ DirectivesAim of preliminary assessment is to identify the areas of mandatory measurements and areas in which the limit values, or limit values including the margins of tolerance, are exceeded. The Directive explicitly requires such classification for the whole territory of a country More details: www.chmi.cz

AQIh - Czech Republic

Year

Pollutant, averaging

<= LAT> LAT and

<= UAT> UAT and

<= LV> LV and

<= MT> MT AQIh,x

PM10-DP 0,00 0,02 65,61 33,82 0,55PM10-RP 0,00 8,41 91,16 0,43 0,10NO2-HP 80,57 8,54 10,90 0,00 0,00NO2-RP 82,98 4,57 1,55 0,30 0,00SO2-DP 57,53 28,99 10,94 2,55 - 2,55Union 0,00 0,02 64,80 34,63 0,55 35,18PM10-DP 0,00 0,80 78,00 21,10 0,10PM10-RP 0,66 7,21 91,79 0,23 0,10NO2-HP 87,31 12,69 0,00 0,00 0,00NO2-RP 82,68 4,87 12,45 0,00 0,00SO2-DP 95,10 4,82 0,06 0,02 - 2,55Union 0,00 0,00 78,70 21,20 0,10 21,30

34,37

0,331998

1999

21,20

0,33

% of population in areas classified according to 1DD, protection of public health

Example of assessment based on Ambient AQ Directives continuation

AQIe - Czech Republic

1998<= LAT

> LAT and <= UAT

> UAT and <= LV

> LV, =AQIe

SO2-W_av 34,90 40,03 20,19 4,89NOx-Y_av 85,78 7,61 3,31 3,30Union 33,43 40,24 19,53 6,81

1999SO2-W_av 64,41 27,71 7,01 0,87NOx-Y_av 86,48 7,71 3,25 2,56Union 60,93 27,93 7,92 3,22

% of areas classified according to 1DD, protection of ecosystems and vegetation

AQ Indicators based on National Indicators - Health Protection

n

ii

n

i

iiX

X

N

NAQIh

AQIh

1

1, 100.

n

ii

n

i

ii

N

NAQIh

AQIh

1

1 100

i .. country

Ni.. Number of population in a country

X..pollutant (SO2, PM10, NO2, …)

..),,(

,

2102 NOPMSOXixi AQIhAQIh

AQIh ~... % of population in zones (areas) where any of limit values (and LV +MT) for protection of health are exceeded

=> calculated as % of union of zones where a limit values for a pollutant are exceeded

AQ Indicators based on National Indicators - Protection of Vegatation and Ecosystems

n

ii

n

i

iiX

X

A

AAQIe

AQIe

1

1, 100.

AQIe ~... % of territory of zones where any of the limit values for protection of ecosystems are exceeded

=> calculated as % of union of zones where limit values for a pollutant are exceeded

..),,(

,

2102 NOPMSOXixi AQIeAQIe

n

ii

n

i

ii

A

AAQIe

AQIe

1

1 100

i .. country

Ai.. area of a country

X..pollutant (SO2, PM10, NO2, …)