One of the CRU's most significant products is the CRUTEM global dataset of land near-surface temperature anomalies on a 5?by 5?grid-box basis, which is compiled in conjunction with the Hadley Centre for Climate Prediction and Research and its sea-surface temperature dataset to produce the HadCRUT temperature record.
42.
It has been proposed that the mechanism of increased Arctic surface air temperature anomalies during La Ni�a periods of ENSO may be attributed to the " tropically excited Arctic warming mechanism " ( TEAM ), when Rossby waves propagate more poleward, leading to wave dynamics and an increase in downward infrared radiation.
43.
They raised three main objections : ( 1 ) Soon and Baliunas used data reflective of changes in moisture, rather than temperature; ( 2 ) they failed to distinguish between regional and hemispheric mean temperature anomalies; and ( 3 ) they reconstructed past temperatures from proxy evidence not capable of resolving decadal trends.
44.
Most often sea surface temperature anomalies in the Atlantic and intensification of the mid latitude westerlies in the Pacific can bring a stable anticyclone, meaning that the pressure can remain above average for weeks, or even months at a time, allowing the heat to build and dry weather to continue during the anticyclonic system.
45.
According to Nick Graham, a researcher at the Scripps Institution of Oceanography who was instrumental in alerting the Brazilians about these events, the current El Nino event-- generally considered to be the strongest this century-- is also marked by " unheard of " temperature anomalies in the Indian Ocean ( and to a lesser extent in the South China Sea ).
46.
Researchers have been unable to explain this discrepancy . " [ 19 ] In a paper presented to the Competitive Enterprise Institute Lindzen referred to the " warming episode from the mid-1970s to the mid-1990s " and the " fact that the global temperature anomaly ceased increasing by the mid nineties " as evidence against climate models . [ 1 ].
47.
In August, the NOAA CPC predicted that the 2015 El Ni�o " could be among the strongest in the historical record dating back to 1950 . " In mid November, NOAA reported that the temperature anomaly in the Ni�o 3.4 region for the 3 month average from August to October 2015 was the 2nd warmest on record with only 1997 warmer.
48.
A recent example is the winter of 1996 97, which featured heavy flooding in California and in the Pacific Northwest ( estimated damage costs of $ 2.0 3.0 billion at the time of the event ) and a very active MJO . Such winters are also characterized by relatively small sea surface temperature anomalies in the tropical Pacific compared to stronger warm and cold episodes.
