Table 1 Ranges in longitude and latitude, total area, area and normalized area impacted by PMHWs of the four regions considered in this study

From: Decrease in air-sea CO2 fluxes caused by persistent marine heatwaves

critical CO2 sink/source regions

Longitude range

Latitude range

Total Area (106 km2)

Area impacted by PMHWs (106 km2)

Area impacted by PMHWs/ total Area (%)

North Pacific CO2 sink

123.5°E-121.5°W

23.5°N–59.5°N

17.7

3.8

21

Tropical Pacific CO2 source

173.5°E-73.5°W

17.5°S–5.5°N

18.4

2.9

16

North Atlantic CO2 sink

74.5°W-7.5°E

30.5°N–65.5°N

11.0

1.1

10

Mid-high latitude Southern Oceans CO2 sink

179.5°W-122.5 W and 85.5°W-180°E

20.5°S–56.5°S

56

2.8

5