Ireland’s Environment – An Assessment 2016
32
Kelly at the Clean Air Conference in Dublin in September
2015, should help to improve air quality for all citizens.
However, continued use of peat and wood will contribute
to air pollution in residential areas. EPA funded research
being undertaken by a UCC led group (SAPPHIRE)
14
aims to deliver detailed information on the chemical
composition and sources of airborne particulate matter in
rural and urban residential areas of Ireland so as to assist
appropriate health focused policy interventions.
Road Transport
While exhaust emission limits become stricter, this is
offset by increases in the numbers of cars
New EU emissions standards for vehicles, cleaner
technology, and a reduction in the number of vehicles
using the roads as a result of the economic downturn led
to a decrease in NO
2
in our urban centres. However, this is
unlikely to continue into the future. Economic recovery will
most likely lead to an increase in NO
2
levels. The failure of
real-world emissions of NO
x
Euro 5 class vehicles to meet
the standards set for them has had a disproportionate
impact on ambient air (EEA, 2015). Euro 5 class vehicles
showed a reduction in NO
2
emissions in laboratory tests;
however, these reductions were not observed in real-
world driving. As a result, projections of NO
2
emission
reductions did not come true and an increase in vehicle
numbers actually led to increasing NO
2
levels across
Europe. Ongoing non-compliance with NO
x
ceiling levels
is a concern and needs to be addressed. The actions set
out in the Department of Transport’s
Smarter Travel –
A Sustainable Transport Future
15
should be implemented
to improve air quality. These include actions to reduce
travel demand, increase alternatives to the private car and
improve the efficiency of motorised transport. Enhanced
incentives to encourage vehicle owners to switch to
electric options should also be encouraged.
14
www.ucc.ie/en/crac/research/sapphire/15
http://www.smartertravel.ieShipping
Loading and unloading activities at ports can have
considerable localised impact on emissions of
particulate matter
As an island nation, Ireland is heavily dependent on
shipping for the import and export of goods. Sulphur
dioxide is a pollutant that is closely linked to shipping. As
the economy continues to recover, activity in this sector is
likely to increase. In-port activities associated with loading
and unloading can also have a considerable local and
regional impact on emissions of particulate matter. The
2012 revision of the Directive on the sulphur content of
liquid fuels (SI No. 273 of 2014), which ensures that liquid
oils and gas oils have a maximum sulphur content of
1% and 0.1% respectively, has had a positive impact on
observed SO
2
levels.
Transboundary Air Pollution
Relative to other EU countries, Ireland rarely
experiences transboundary air pollution impacts
Although Ireland’s prevailing wind direction is from the
south-west, bringing in a cleaner North Atlantic air mass,
occasionally transboundary air pollution from continental
Europe (and, more rarely, pollution from volcanic eruptions
in Iceland) and beyond arrives. Springtime transboundary
events bringing elevated particulate matter associated with
Saharan dust have been a feature. There has also been
a number of short-term air pollution episodes associated
with European generated ozone, particulate matter and
NO
x
. These are likely to continue into the future. With
regard to ozone and NO
x
, a pan-European approach
is required to tackle the problem. Recent research has
suggested that a portion of the ‘Saharan’ dust may in fact
be due to transboundary ammonia induced particulate
matter (Vieno
et al
., 2016). The European Commission has
made a start in this regard by agreeing the “EU Clean Air
Policy Package”, the main components of which are:
n
A Clean Air Programme for Europe, describing the problem
and setting out new interim objectives for reducing health
and environmental impacts up to 2030. It also defines the
necessary emission reduction for the key pollutants and
the policy agenda that will be necessary to achieve these
objectives
n
A revised NEC Directive, containing updated national
ceilings (caps) for six key air pollutants (PM, SO
2
, NO
x
,
VOCs, NH
3
and CH
4
(methane) for 2020 and 2030
n
A new Directive for Medium-sized Combustion Plants
between 1 and 50 MWth
n
A ratification proposal for the amended Gothenburg
Protocol under the 1979 UNECE Convention on Long-
range Transboundary Air Pollution.