HOME > Monitoring and Data > Oceanic & Atmospheric Data > Monthly Atmospheric and SST Indices
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General Information
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Winds
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200 millibar (mb) Zonal Winds Equator (165°West-110°West):
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850 mb Trade Wind Index (135°East-180°West) 5°North-5°South West Pacific:
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850 mb Trade Wind Index (175°West-140°West) 5°North-5°South Central Pacific:
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850 mb Trade Wind Index (135°West-120°West) 5°North-5°South East Pacific:
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QBO.U30.Index (replaces 30 mb Singapore Winds [refer to Frequently Asked Questions]):
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QBO.U50.Index (replaces 50 mb Singapore Winds [refer to Frequently Asked Questions]):
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Sea Level Pressure (SLP)
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Darwin Sea Level Pressure (1951 - Present):
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Tahiti Sea Level Pressure (1951 - Present):
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Darwin (SLP) 1882 - 1950:
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Tahiti (SLP) 1882 - 1950:
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Southern Oscillation Index (SOI)
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(Stand Tahiti - Stand Darwin) Sea Level Pressure:
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(Stand Tahiti - Stand Darwin) SLP 1882 - 1950:
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Equatorial SOI
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Indonesia SLP (Standardized Anomalies):
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Equatorial Eastern Pacific SLP (Standardized Anomalies):
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Equatorial SOI:
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Sea Surface Temperature (SST)
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Weekly Niño 1+2 (0-10°South)(90°West-80°West) Niño 3 (5°North-5°South)(150°West-90°West) Niño 4 (5°North-5°South) (160°East-150°West) Niño 3.4 (5°North-5°South)(170-120°West):
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Monthly Niño 1+2 (0-10°South)(90°West-80°West) Niño 3 (5°North-5°South)(150°West-90°West) Niño 4 (5°North-5°South) (160°East-150°West) Niño 3.4
(5°North-5°South)(170-120°West): (NOTICE: ON AUGUST 1, 2001 THE BASE PERIOD USED TO CALCULATE THE MONTHLY NIÑO REGION ANOMALIES WERE CHANGED FROM (1961-1990) TO (1971-2000). THIS CHANGE HAS CAUSED SOME SMALL VARIATIONS IN THE NINO REGION ANOMALIES.)
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North Atlantic (5-20°North, 60-30°West), South Atlantic (0-20°South, 30°West-10°East), Global Tropics (10°South-10°North, 0-360):
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West Coast of Americas SST (Known as Ship Track 1):
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Hawaii Fiji SST (Known as Ship Track 6):
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West Coast of Americas SST 1921 - 1950 (Ship Track 1):
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West Coast of Americas SST 1921 - 1950 (Ship Track 6):
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Temperatures
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Zonally Average 500 MB Temperature Anomalies:
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Outgoing Long Wave Radiation (OLR)
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Outgoing Long Wave Radiation Equator (160°E-160°W):
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