Voluntary Training Program 2012 Climate change and shipping
Dec 14, 2015
Marine Environmental Awareness Course
Outline
The greenhouse effect and the Earth’s climate system
The …human element in climate:
Emissions of greenhouse gases
How is climate changing?
Impacts
Climate change and the Mediterranean
Regulations on the energy efficiency of ships
Marine Environmental Awareness Course
All components of the earth system are heated by the absorbed energy and emit part of it as long-wave
(infrared) radiation.
Trace gases in the earth’s atmosphere (greenhouse
gases) re-absorb most of the outgoing infrared radiation and
sent it back to earth.
About 30% of the incoming solar radiation is directly reflected by the atmosphere (clouds,
dust particles, aerosols) and the earth surface
The greenhouse effect
The rest 70% is absorbed by the atmosphere, oceans and land
Natural GHGs
Carbon Dioxide CO2
Methane CH4
Nitrous Oxide N2O
Water Vapour H2O
Marine Environmental Awareness Course
The greenhouse effect: too much of a good thing…
The Earth thanks to the greenhouse effect
Average temperature 14 oC
The Earth with enhanced greenhouse effect
Average temperature >14.5 oC(so far…)
Average temperature -18 oC
The Earth without the greenhouse effect
Marine Environmental Awareness Course
Global distribution of solar energy input
Mean annual global insolation
Marine Environmental Awareness Course
Redistributing heat throughout the globe:
the global ocean conveyor belt…
Marine Environmental Awareness Course
Climate changes constantly over various timescales due to natural
variability…Temperature change from present, oC
Source: NOAA
Marine Environmental Awareness Course
Greenhouse gasesConcentration
(1750)Concentration
(2009)Increase
Warming potential
RF
Carbon Dioxide (CO2)
280 ppm 386.8 ppm 38% 1 63.6%
Methane (CH4) 700 ppb 1803 ppb 158% 21 18.1%
Nitrous Oxide (N2O) 270 ppb 322.5 ppb 19% 310 6.3%
F-gases (CFCs,HFCs,SF6)
- 900 ppt - 140 - 23900 12%
Human-induced increases in GHGsSource: World Meteorological Organization (WMO)
Marine Environmental Awareness Course
CO2 (ppm)
Greenhouse gasesConcentration
(1750)Concentration
(2009)Increase
Warming potential
RF
Carbon Dioxide (CO2)
280 ppm 386.8 ppm 38% 1 63.6%
Methane (CH4) 700 ppb 1803 ppb 158% 21 18.1%
Nitrous Oxide (N2O) 270 ppb 322.5 ppb 19% 310 6.3%
F-gases (CFCs,HFCs,SF6)
- 900 ppt - 140 - 23900 12%
Source: World Meteorological Organization (WMO)
Human-induced increases in GHGs
Marine Environmental Awareness Course
CH4 (ppb)
Greenhouse gasesConcentration
(1750)Concentration
(2009)Increase
Warming potential
RF
Carbon Dioxide (CO2)
280 ppm 386.8 ppm 38% 1 63.6%
Methane (CH4) 700 ppb 1803 ppb 158% 21 18.1%
Nitrous Oxide (N2O) 270 ppb 322.5 ppb 19% 310 6.3%
F-gases (CFCs,HFCs,SF6)
- 900 ppt - 140 - 23900 12%
Source: World Meteorological Organization (WMO)
Human-induced increases in GHGs
Marine Environmental Awareness Course
N2O (ppb)
Greenhouse gasesConcentration
(1750)Concentration
(2009)Increase
Warming potential
RF
Carbon Dioxide (CO2)
280 ppm 386.8 ppm 38% 1 63.6%
Methane (CH4) 700 ppb 1803 ppb 158% 21 18.1%
Nitrous Oxide (N2O) 270 ppb 322.5 ppb 19% 310 6.3%
F-gases (CFCs,HFCs,SF6)
- 900 ppt - 140 - 23900 12%
Source: World Meteorological Organization (WMO)
Human-induced increases in GHGs
Marine Environmental Awareness Course Source: World Meteorological Organization (WMO)
Greenhouse gasesConcentration
(1750)Concentration
(2009)Increase
Warming potential
RF
Carbon Dioxide (CO2)
280 ppm 386.8 ppm 38% 1 63.6%
Methane (CH4) 700 ppb 1803 ppb 158% 21 18.1%
Nitrous Oxide (N2O) 270 ppb 322.5 ppb 19% 310 6.3%
F-gases (CFCs,HFCs,SF6)
- 900 ppt - 140 - 23900 12%
Source: World Meteorological Organization (WMO)
Human-induced increases in GHGs
Marine Environmental Awareness Course
Model simulations show clearly that
temperature increase since 1950 is induced by human activities
The human element…
Marine Environmental Awareness Course
Sources of CO2 emissions
74%(thousands tones)
26%(thousands tones)
Power production, industrial activities, transports
Changes in land use, deforestation, urbanization
Marine Environmental Awareness Course
CO2 emissions per sector (2007)
Source: Second IMO GHG Study 2009
870 million tones
Marine Environmental Awareness Course
Melting of glaciers, retreat of sea ice and sea level rise…
Alaska, Muir Glacier
13 August 1941
31 August 2004
Marine Environmental Awareness Course
Marine environment and climate change
Warming (up to 3000 m depth)
Changes in salinity
Disturbance of ocean currents (conveyor belt)
Blue bars: change between 1961 – 2003Red bars: change between 1993 - 2003
Source: IPCC
Marine Environmental Awareness Course
Marine environment and climate change
Warming (up to 3000 m depth)
Changes in salinity
Disturbance of ocean currents (conveyor belt)
Acidification
Marine Environmental Awareness Course
CO2 + H2O H2CO3
H2CO3 H+ + HCO3
-
H+ + CO32- HCO3
-
CaCO3 Ca2+ + CO32-
Marine environment and climate change
Marine Environmental Awareness Course
Habitat lossesMarine environment and climate change
Coral bleaching
Changes in the life cycle and distribution of many species, increased risk of species invasions, biodiversity losses
Marine Environmental Awareness Course
Changes in wind conditions, average wave height, sea ice coverage, sea level etc. have serious implications for shipping and related infrastructure.
Marine environment and climate change
Marine Environmental Awareness Course
As a general trend, over the last decades Mediterranean climate has become progressively hotter and drier
Average summer temperature has increased up to 3 οC
Average winter precipitation has decreased by 20%
Marine Environmental Awareness Course
Droughts, summer heat waves and fires have increased both in frequency
and intensity and are expected to worsen in the near future, resulting in widespread desertification of the area
As a general trend, over the last decades Mediterranean climate has become progressively hotter and drier
Marine Environmental Awareness Course
Lack of freshwater, especially during the summer period, is a major threat for an area representing
less than 3% of the global freshwater reservoir and hosting 50% of the global population already
suffering from limited access to water resources.
As a general trend, over the last decades Mediterranean climate has become progressively hotter and drier
Marine Environmental Awareness Course
Meditteranean sea is getting warmer: surface temperatures have increased 0.8 – 1.4 oC and deep water (>250 m)
has become 0.12 oC warmer. Changes in circulation are already observed
As a general trend, over the last decades Mediterranean climate has become progressively hotter and drier
Marine Environmental Awareness Course
Warming of sea water favors and accelerates the migration and expansion of introduced species of tropical origin (>600 in the Eastern Mediterranean)
northwards and westwards
As a general trend, over the last decades Mediterranean climate has become progressively hotter and drier
Marine Environmental Awareness Course
A glimpse to the future…
Climate system is complex…
Human society is even more complex…
Naturally, projections of future climate change show huge deviations
Marine Environmental Awareness Course
Shipping is by far the most energy efficient mode of transport…
Source: Second IMO GHG Study 2009
Marine Environmental Awareness Course
But there is still great potential (and need) for improvement…
World seaborne trade (billion tonne miles)
Marine Environmental Awareness Course
Regulations on energy efficiency of ships (new chapter 4 of MARPOL Annex VI) are expected to enter into force on 1 January 2013
Energy Efficiency Design Index (EEDI)
Ship Energy Efficiency Management Plan (SEEMP)
new ships over 400 GRT
all ships over 400 GRT
Marine Environmental Awareness Course
Energy efficiency design index (EEDI)
(grams CO2 / capacity * nautical mile)
Marine Environmental Awareness Course
Indicative baseline for a certain ship type
Required reduction (x%)
10% reduction for ships built between 2015 – 2020
20% reduction for ships built between 2020 – 2025
30% reduction for ships built after 2025
Energy efficiency design index (EEDI)
Marine Environmental Awareness Course
Ship Energy Efficiency Management Plan (SEEMP)
Self – evaluation & improvement
Monitoring
Implementation
Planning
Marine Environmental Awareness Course
Ship Energy Efficiency Management Plan (SEEMP)
Self – evaluation & improvement
Monitoring
Implementation
Planning
Improved voyage planningWeather routingJust in timeSpeed optimizationOptimized shaft powerOptimum trimOptimum ballastOptimum propeller and propeller inflowHull maintenancePropulsion system maintenanceImproved fleet management and energy management.........
Some possible practices for fuel-efficient operation of ships Resolution MEPC.213(63)
Marine Environmental Awareness Course
Ship Energy Efficiency Management Plan (SEEMP)
Self – evaluation & improvement
Monitoring
Implementation
Planning
Energy Efficiency Operational Indicator (EEOI)
Marine Environmental Awareness Course
Ship Energy Efficiency Management Plan (SEEMP)
Self – evaluation & improvement
Monitoring
Implementation
Planning
Energy Efficiency Operational Indicator (EEOI)
Actual fuel consumption x Ccarbon (g CO2 / g fuel)
Actual cargo transported x distance travelled ΕΕΟΙ =
Ccarbon
3,206
3,151
3,114
2,968
2,931
Ccarbon
3,206
3,151
3,114
2,968
2,931