Emissions of nox and sox from baltic shipping effects on air quality and marine eutrophication
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Emissions of NOx and SOx from Baltic shipping Effects on air quality and marine eutrophication. Tapani Stipa , Jukka-Pekka Jalkanen, Marke Hongisto , Jari Walden ( Finnish Meterological Institute) Juha Kalli ( University of Turku) Anders Brink (Åbo Akademi University ).

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Shipping is a global source of emissions

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Emissions of NOx and SOx fromBalticshippingEffects on air quality and marine eutrophication

Tapani Stipa, Jukka-Pekka Jalkanen, MarkeHongisto, Jari Walden (Finnish Meterological Institute)

Juha Kalli (University of Turku)

Anders Brink (Åbo Akademi University)


Shipping is a globalsource of emissions

  • Shippingenjoyslong-standingfreedoms of the highseas

  • Emissionsfromshipsaredifficult to measure

    • Previousestimateswerebased on bunkerused and estimatedshiproutes

    • Updatesevery 5-10 years

  • Emissionshardlyregulated (until 2005 at least)


Goals (Emission inventory)

AIS information

Revised emission factors


Live emissions


Distribution of annual NOx emission


Verification of emission estimatesfuelconsumptionestimate


Windwaves and fuelconsumptionbyhour


NOx deposition (mgN/m2) due to shipping


Percentage of monthly NOx deposition due to ship emissions

July 2006

January 2007


Emission measurements


10,65 m

7 m

6 m

Measure-ment cabin

measurement station in Aegna

  • - Wind direction and –speed

  • - Temperature

  • - Measurement of gas compounds: O3, SO2 and NO/NOx

    • Mesurement frequency: 10 min discontinuous periods

    • -Windspeed

  • - Temperature

    • -Wind speed

  • - Temperature

  • - Measurement of gas compounds: O3, SO2 and NO/NOx


  • Measured data; example, 9h period 29.7.2007


    Shipping is a potential contributor to marine eutrophication

    Thought experiment:A month’s worth of shipping emissions would increase the nitrogen level in the sea within 10 km of the shipping lane significantly. The increase is comparable to about 5-20% of winter nutrient concentrations.


    Scenario with 5.2% growth


    Conclusions

    • In the Balticregion, shipemissionsaccount for up to 50% of the Nox deposition

    • Balticshippingcreatesmore SOx emissionsthanNordiccountries (FI, SE, NO, DK) togetherfromland-basedsources

    • Muchpolicy-levelactivityboth in the Baltic and internationally

    • Should WMO liaisemorecloselywith IMO to promote the study of shippingemissions and theireffects?


    Thankyou!

    [Quiz: where is the abovepicturetakenfrom?]


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