Parameter Tree:
EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > SEA SURFACE TEMPERATURE INDICES > WESTERN HEMISPHERE WARM POOL

Definition:
Monthly anomaly of the ocean surface area warmer than 28.5°C in the Atlantic and eastern North Pacific. Climatology is 1951-2000.

Reference:
Earth Systems Research Laboratory, Physical Sciences Division, NOAA,
http://www.esrl.noaa.gov/psd/data/climateindices/list/#WHWP

Wang, C., and D.B. Enfield, 2001: The tropical Western Hemisphere warm pool, Geophys. Res. Lett., 28, 1635-1638. AOML and PSD