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The North Atlantic in an era of global change

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The North Atlantic in an era of global change. Bogi Hansen Faroe Marine Research Institute. Cars. Deforestation. Factories. Oil platforms. The Earth. The Earth. s hould b e warming. and it is. CO 2 and other greenhouse gases from human activity.

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Presentation Transcript
slide1
The North Atlantic

in an era of global change

Bogi Hansen

Faroe Marine Research Institute

slide2
Cars

Deforestation

Factories

Oil platforms

slide3
The Earth

The Earth

should

be warming

and it is

slide4
CO2and other greenhouse gases from human activity

Global average surface air temperature

(IPCC-2007)

2100: + 4ºC ?

ºC

14.5

14.0

Natural forces, only

13.5

1850

1900

1950

2000

1950

1900

1850

2000

slide5
Projected surface warming 2080-2099

for A2 scenario (IPCC 2007)

North

Atlantic

2 – 3 ºC warming

ºC

slide10
Whither the fish

With warming, fish stocks should move northwards

But, changing currents may be more important

?

slide11
The marine ecosystem

Artist:Glynn Gorick

King Cod

slide12
Atmosphere

Rain

Clouds

Wind

What will happen to King Cod ?

Air temperature

Light

Temperature & Currents

?

ocean acidification
Ocean acidification

CO2

H2CO3

-

HCO3 + H+

-

-

CO3 + 2H+

the sea surface has become more acidic since the industrial revolution
The sea surface has become more acidic since the Industrial revolution

+25%

Increased concentration of H+

slide15
Coldwater

corals

slide16
How living conditions in the

North Atlantic will be

We don’t know

But, they will change

and continue to change

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