There are lots of climate data and graphs that are freely available on the web. And what's more, they are updated monthly or weekly, if not daily. The peddlers of "man-made warming" or its more popular cousin, "man-made climate change" cannot show those graphs and data because the data also say that there is such as thing as "global cooling" aside from "global warming." And that what we really have are "natural climate cycles" and not "unprecedented man-made climate change".
The current La Nina is now 11 months old, SST anomaly went negative in May 2010. Data/graph is from Australia's Bureau of Meteorology, http://www.bom.gov.au/climate/enso/indices.shtml
Lower graph shows the area where those Nino regions 1 to 4 are. Region 3.4 is the biggest or widest area, situated in the middle of equatorial Pacific Ocean. Nino 4 is the one closest to East Asia like the Philippines. These 2 graphs are from WUWT's ENSO page, http://wattsupwiththat.com/reference-pages/enso/.
One explanation could be that as La Nina slowly retreats from equatorial Pacific, the warmer-than-normal sea water that La Nina pushed down and showed somewhere else (like in South China Sea) is also slowly coming back. Data is from http://www.osdpd.noaa.gov/data/sst/anomaly/anomnight.current.gif.
Lower graph is from Japan Meteorological Agency (JMA) and European Meteorological Organization (ECMWF). I got it from Joe Bastardi's No no El Nino (till 2012). The consensus or average forecasts say that La Nina will persist until end-2012 or beyond.
These 2 or more forecast graphs above speak well of the "reliability" of the UN IPCC and Al Gore climate models. If current climate models cannot predict with high certainty the temperature range just 3 to 10 months into the future, how can the IPCC models predict with certainty the world's temperature 90 to 100 years from now?
And why do we believe those far away temperature forecasts and guesses, when all weather forecasting agencies from all countries around the world that also use the latest and most sophisticated tools and techniques, cannot predict with high certainty the weather 3 days or 1 week from now? That is why the weather forecasts are updated and revised everyday, every 12 hours, or even every hour.