>UPDATE: Corrected the .gif animation at the end of the post. Thanks, Anonymous
The May 2010 SST data through the NOAA NOMADS website won’t be official until Monday June 7th. Refer to the schedule on the NOAA Optimum Interpolation Sea Surface Temperature Analysis Frequently Asked Questions webpage. The following are the preliminary Global and NINO3.4 SST anomalies for May 2010 presented by the NOMADS website. I’ve also included the weekly data through May 26, 2010, but I’ve shortened the span of the weekly data, starting it in January 2004, so that the wiggles are visible.
Based on the preliminary data, monthly NINO3.4 SST anomalies are continuing to decline. They dropped significantly last month, approximately 0.72 deg C.
Monthly NINO3.4 SST Anomalies
Monthly Global SST anomalies, according to the preliminary data, are now dropping in a lagged response to the change in the tropical Pacific.
Monthly Global SST Anomalies
The weekly NINO3.4 SST anomaly data are firmly below zero, but they’ve stalled over the past week.
Weekly NINO3.4 SST Anomalies
Weekly Global SST Anomalies are still elevated but continue their lagged drop in response to the decline in NINO3.4 SST anomalies.
Weekly Global SST Anomalies
HOW LOW WILL NINO3.4 SST ANOMALIES GO THIS YEAR?
The following is a gif animation comparing the equatorial subsurface temperature anomalies for June 1, 2010 to June 1, 2007, as NINO 3.4 SST anomalies were working their way down toward the 2007/08 La Niña. The negative subsurface anomalies in the equatorial Pacific this year appear more significant than three years ago.
Equatorial Subsurface Temperature Anomalies June 1, 2007 & 2010
SST anomaly data is available through the NOAA NOMADS website:
Daily and Monthly equatorial subsurface temperature anomaly graphics are available through the ECMWF website: