AIR QUALITY INDICATORS - PowerPoint PPT Presentation

1 / 15
About This Presentation
Title:

AIR QUALITY INDICATORS

Description:

AIR QUALITY INDICATORS. Frank de Leeuw. 8th Air Quality EIONET workshop. 6-7 November 2003, Oslo ... NOx , emitted to air by economic activities. Are levels in ... – PowerPoint PPT presentation

Number of Views:45
Avg rating:3.0/5.0
Slides: 16
Provided by: Pui2
Category:
Tags: air | indicators | quality | olso | oslo

less

Transcript and Presenter's Notes

Title: AIR QUALITY INDICATORS


1
AIR QUALITY INDICATORS
  • Frank de Leeuw
  • 8th Air Quality EIONET workshop
  • 6-7 November 2003, Oslo

2
ENVIRONMENTAL INDICATOR
  • 1. What, how serious is the problem?
  • 2. What / Who is causing the problem?
  • 3. Is the problem being solved?

With the sub questions Whats being done? and
Is it effective?
3
Example NOx Generic question Answer Indicat
or .
  • ()
  • ()
  • Emissions NOx, total by sector
  • Exceedance days of NO2 limit values in urban
    areas
  • Percentage area exceeding critical loads for
  • Total acidity
  • nitrogen
  • Effectiveness policy response NOx
  • What is the problem?
  • What/who is causing?
  • Is the problem being solved?
  • effectively?
  • health impairment
  • ecosystem /crop damage (acid/eutro)
  • NOx , emitted to air by economic activities
  • Are levels in cities low enough?
  • Are loads onto ecosystems / crops dropping, and
    is damage avoided?
  • What are cost / contributions of measures taken?

4
ENVIRONMENTAL INDICATOR
  • representative
  • transparent
  • distinctive
  • consistent within DPSIR-chain
  • target value

5
Present EEA indicators, Air pollution
  • Emissions (Pressure)Acidifying SO2, NOx,
    NH3Particles and precursorgasesOzone
    precursors NOx,VOC etc.
  • Air quality (State)Area of exceedance,critical
    loadsacidity and nitrogenExceedance of limit
    target valuesO3, PM10, NO2, SO2 ,.Exposure
    of crops/vegetation to ozone

http//themes.eea.eu.int/all_indicators_box
6
Air Pollution Indicators
  • Building blocks for
  • Environmental Signals
  • sectoral reports (TERM, EERM)
  • Kiev report
  • Air Quality Air Pollution reports
  • ...

7
Health related limit values
  • Ozone n25 TV 120 ug/m3 (daily 8h-max)
  • PM10 n35 LV 50 ug/m3 (24h)
  • PM10 n1 LV 40 ug/m3 (annual)
  • NO2 n1 LV 40 ug/m3 (annual)
  • NO2 n18 LV 200 ug/m3 (1h)
  • SO2 n3 LV 125 ug/m3 (24h)
  • SO2 n24 LV350 ug/m3 (1h)

8
Methodology
  • Selection or urban (O3, PM10) and street (PM10)
    stations with data coverage gt75
  • station(s) representative for whole city
  • if ngt1 exceedance days averaged over all stations

9
PM10 in urban air in EEA31
10
PM10 in urban air
11
O3 in urban air in EEA31
12
O3 in urban air
13
Uncertainties in data
  • errors in AQ data
  • errors in station classification
  • coverage incomplete variable in time
  • missing incomplete info on meas. method
  • comparability
  • missing info (station type city)

14
Uncertainties in aggregation
  • representativity from point to area
  • aggregation of more than one station
  • variable coverage per country
  • variable coverage in time
  • missing population data

15
How to proceed?
  • Improve QA/QC on EoI data
  • independent check on station classification
  • fill gaps in space and time using models,
    interpolation or historical data
  • combine modelling monitoring
Write a Comment
User Comments (0)
About PowerShow.com