Table 9-4: Summary of all net global air-sea CO2 fluxes (a) and global average transfer velocities (b) calculated using theWanninkhof parameterisation

Net global air-sea CO2 flux due to chemical enhancement (Mt C yr-1)

weekly winds

weekly winds split by rayleigh distn

   

OH- reaction rate*6

 

OH- reaction rate*6

diffusion only

+3362

+4191

uncatalysed

-20.1

-34.3

-22.2

-33.1

enz distribnÞ

chl only

chl & physiology

chl only

chloro & physiology

chl only

chloro & physiology

chl only

chloro & physiology

mean concnß

 

low cost

high cost

 

low cost

high cost

 

low cost

high cost

 

low cost

high cost

0.208nM

-19.4

-17.4

-9.0

-33.5

-31.6

-23.7

-19.6

-16.5

-5.1

-30.6

-27.7

-17.3

0.831nM

-17.3

-9.7

+20.8

-31.0

-23.7

+5.4

-12.5

-1.8

+36.7

-23.0

-13.0

+22.2

3.323nM

-7.8

+18.6

+122.2

-20.4

+5.4

+105.2

+12.1

+46.5

+164.0

+2.9

+35.6

+145.3

13.293nM

+33.9

+119.7

+438.1

+24.0

+108.6

+418.7

+92.1

+191.2

+513.9

+85.6

+182.1

+489.9

53.172nM

+204.4

+455.8

+1320.7

+198.4

+448.1

+1298.5

+335.1

+591.7

+1388.2

+331.7

+585.9

+1359.9

Average transfer velocity due to chemical enhancement (x10-2 mol m-2 yr-1 m atm-1)

weekly winds

weekly winds split by rayleigh distn

   

OH- reaction rate*6

 

OH- reaction rate*6

diffusion only

5.317

6.628

uncatalysed

0.089

0.165

0.137

0.240

enz distribnÞ

chl only

chl & physiology

chl only

chloro & physiology

chl only

chloro & physiology

chl only

chloro & physiology

mean concnß

 

low cost

high cost

 

low cost

high cost

 

low cost

high cost

 

low cost

high cost

0.208nM

0.0987

0.0991

0.1014

0.1743

0.1747

0.1769

0.1517

0.1522

0.1540

0.2536

0.2540

0.2551

0.831nM

0.1256

0.1257

0.1327

0.1988

0.2012

0.2063

0.1889

0.1909

0.1934

0.2876

0.2893

0.2909

3.323nM

0.2203

0.2257

0.2346

0.2906

0.2957

0.3044

0.3199

0.3189

0.3137

0.4024

0.4086

0.4038

13.293nM

0.5304

0.5487

0.5411

0.5929

0.6104

0.6044

0.6817

0.7029

0.6460

0.7564

0.7762

0.7247

53.172nM

1.4621

1.5175

1.3787

1.5118

1.5662

1.4331

1.6842

1.7409

1.4784

1.7373

1.7922

1.5438