(5S-5N, 170W-120W) The region that has large variability on EL Niño time scales, and that is closer (than NINO3) to the region where changes in local sea-surface temperature are important for shifting the large region of rainfall typically located in the far western Pacific.
NINO 4
(5S-5N, 160E-150W) The region where changes of sea-surface temperature lead to total values around 27.5C, which is thought to be an important threshold in producing rainfall
Sea Ice
Southern and Northern hemisphere sea ice cover area and volume
Southern Annual Mode (SAM) index (40S-65S, zonal average of sea level pressure, normalised)
The volume ice export at the 79deg N section (Fram Strait, integrated from 20W-10E) and something comparable for Antarctic
Snow covered area
monthly, km^2
Means for North America, Eurasia, Northern Hemisphere
Mean SWE / snow mass
monthly, km^3 (for SWE) / kg (for mass)
Means for North America, Eurasia, Northern Hemisphere
Soil Moisture
Plant available soil moisture, top 0.1m
Monthly mean, cm
Spatial fields
Illinois, area: 37.5-42.5 deg N, 87.5-91.5 degE
Central China: 30-40 deg N, 105-120 deg E
Russia, area: 55-65 deg N, 20-60deg E
Plant available soil moisture, top 2m
Monthly mean, cm
Spatial fields * Illinois, area: 37.5-42.5 deg N, 87.5-91.5 degE * Central China: 30-40 deg N, 105-120 deg E * Russia, area: 55-65 deg N, 20-60deg E