Annual Danish informative inventory report to UNECE. Emission ...

ered by Winther and Slentø (2010). The emission factors and total emissions
for 2009 are shown in Annex 2.B.14.
0HWKRGRORJLHV DQG UHIHUHQFHV IRU RWKHU PRELOH VRXUFHV
Other mobile sources are divided into several sub-sectors: sea transport,
fishery, air traffic, railways, military, and working machinery and materiel
in the industry, forestry, agriculture and household and gardening
sectors. The emission calculations are made using the detailed method
as described in the EMEP/EEA Air Pollutant Emission Inventory
Guidebook (EMEP/EEA, 2009) for air traffic, off-road working machinery
and equipment, and ferries, while for the remaining sectors the
simple method is used.
$FWLYLW\ GDWD
$LU WUDIILF
The activity data for air traffic consists of air traffic statistics provided
by the Danish Civil Aviation Agency (CAA-DK) and Copenhagen Airport.
Fuel statistics for jet fuel use and aviation gasoline are obtained
from the Danish energy statistics (DEA, 2009).
For 2001 onwards, pr flight records are provided by CAA-DK as data
codes for aircraft type, and origin and destination airports (city-pairs).
Subsequently the aircraft types are separated by NERI into larger aircraft
using jet fuel (jet engines, turbo props, helicopters) and small aircraft
types with piston engines using aviation gasoline. This is done by
using different aircraft dictionaries, internet look-ups and by communication
with the CAA-DK. Each of the larger aircraft type is then
matched with a representative type for which fuel consumption and
emission data are available from the EMEP/EEA databank. Relevant for
this selection is aircraft maximum take off mass, engine types, and
number of engines. A more thorough explanation is given in Winther
(2001a, b).
The ideal flying distance (great circle distance) between the city-pairs is
calculated by NERI in a separate database. The calculation algorithm
uses a global latitude/altitude coordinate table for airports. In cases
when airport coordinates are not present in the NERI database, these
are looked up on the internet and entered into the database accordingly.
For inventory years prior to 2001, detailed LTO/aircraft type statistics
are obtained from Copenhagen Airport (for this airport only), while information
of total take-off numbers for other Danish airports is provided
by CAA-DK. The assignment of representative aircraft types for
Copenhagen Airport is done as described above. For the remaining
Danish airports representative aircraft types are not directly assigned.
Instead appropriate average assumptions are made relating to the fuel
consumption and emission data part.
147