Diesel soot from agricultural machinery: emissions figures updated
Bern, 29.03.2007 - The agricultural machines push out upgrades in
accordance with model calculations around 400 tons of diesel soot per
year. The Federal Office for the Environment on 29 March 2007 together
with experts from the automotive industry, agriculture, the EMPA and
the corresponding modeling completed. The aim of the Covenant is to
minimize the causes of diesel soot.
The federal government sets its priorities in air pollution control
policy among other things, with the aid of model calculations for
pollutant emissions. In the models that are updated regularly, the
reality is to be mapped as accurately as possible. They give an
indication as to what causes intimidates group in which magnitude
pollutants. It therefore follows the action.
The date of the latest federal data on diesel soot emissions from
agricultural machinery have been published 1996th According to this
model, which included forecasts to the year 2030, met with
agricultural machinery in 2005, 1,100 tons of cancer-causing diesel
soot.
The newest model in the context of the bill updating the database FOEN
off now show that agricultural machinery in 2005, expelled some 400
tons of diesel soot. The reason for this downward revision is the
adaptation of various factors that the updated model is based on:
The emission factors (diesel soot emissions in g / kWh) were reduced
on average by nearly half. For the introduction of EU emission
standards in 2003 in Switzerland and the associated technical
improvement of the engines led to a marked reduction of emissions. New
emission factors are based on data from the U.S. Environmental
Protection Agency EPA from 2004 onwards.
Based on new calculations of the Agroscope Reckenholz-Tänikon (ART),
the average annual duration of a tractor in Switzerland by one-third
has been adjusted downwards.
The new model calculation based on a broad-based methodology, which
was approved by the Working Group Diesel soot agricultural machinery.
"The group was established a year ago by FOEN launched to address the
pending update of the diesel soot numbers together with all
stakeholders. In the Working Group were subject matter experts (EMPA,
Iveco Motoren Forschung, Cercle "Air, Agroscope ART, BLW, FOEN) and
the Swiss Association of Agricultural Engineering SVLT represented.
How big is the percentage of agricultural machinery is the total
diesel soot emissions, can not say at the moment. First, the modeling
of the other categories in the off-road machines are available (such
as construction, industry, forestry, ships). With an output of 400
tons per year, the agricultural machinery are of the same magnitude as
the trucks (413 tons of diesel soot per year).
Particulate matter and diesel exhaust: Central Health Problem
A lower diesel soot emissions, agriculture is not exonerate them, like
all other polluter groups continue to contribute to the reduction of
diesel particulate emissions (see box). The primary objective of the
Action Plan under the federal particulate matter is to minimize the
emissions of cancer-causing diesel soot in Switzerland as far as
possible and to avoid as many diseases and premature deaths. Since
agriculture is usually far from urban areas is operated and therefore
relatively less exposure to diesel soot which people live, by the
Action Plan of the Federation of first settlement in the near-source
sectors. Only when the particulate filter technology for retrofitting
tractors technically feasible and economically viable should be taken
in this area measures.
Interpretation of emissions data
Who pushes how many tons of fine dust and soot particles per year:
based figures of the so-called emissions (emission) of air pollutants
on complex model calculations that need to be adjusted periodically
with great effort - because not every tractor or truck can install a
meter . Are collected continuously, however, the so-called emissions,
air pollutants, therefore, which are actually present in the air.
Regarding particulate air measurements show: In many parts of
Switzerland particulate pollution throughout the year is too high,
periodic peak loads as early 2006, only the spectacular expression of
this.
Lower emission figures are therefore interpreted with caution: it does
not mean (automatically) clear is crucial lastly, how much dust and
diesel soot in the air. In this sense, the percentage distribution
between individual issuers is more revealing than absolute numbers in
tons per year: This distribution is evidence of who contributes how
much to actually existing air pollution and where further action is
needed.
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