1

Influence of El Niño on AIRS CO2

08/06/2008

2Low CO2 flux during the 1992-94 ENSO event compared with 1996 non-El Nino year in the central and eastern Pacific.

[Feely et al., 1999]

3

Less upwelling of CO2-enriched water from the equatorial undercurrent leads to less CO2 released to atmosphere.

4

5

First Mode of detrended and deseasonalized AIRS CO2

6

Matsueda’s data at 25S

Black-CO2; Blue-Inverted SOI

ENSO Event

7

Matsueda’s data at 15S

Black-CO2; Blue-Inverted SOI

8

Matsueda’s data at 5S

Black-CO2; Blue-Inverted SOI

9

Matsueda’s data at 5N

Black-CO2; Blue-Inverted SOI

10

Matsueda’s data at 15N

Black-CO2; Blue-Inverted SOI

11

Matsueda’s data at 25N

Black-CO2; Blue-Inverted SOI

12

Matsueda’s data at 35N

Black-CO2; Blue-Inverted SOI

13

AIRS CO2 at 15N

Black-CO2; Blue-Inverted SOI

14

AIRS CO2 at 35N

Black-CO2; Blue-Inverted SOI