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Definition of sub‐regions<br />
Northern<br />
Extratropics<br />
North<br />
Pacific<br />
U.S.<br />
U.S.<br />
U.S.<br />
North<br />
Atlantic<br />
China<br />
China<br />
North<br />
Pacific<br />
Tropical East<br />
Pacific<br />
Indian Ocean/Western<br />
Pacific Warm Pool<br />
Indian Ocean/Western Pacific<br />
Warm Pool<br />
Tropics<br />
Southern<br />
Extratropics