Global Highlights:
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Contents of this Section: |
The data presented in this report are preliminary. Ranks and anomalies may change as more complete data are received and processed. The most current data may be accessed via the Global Surface Temperature Anomalies page. |
IntroductionTemperature anomalies for September - November and November 2006 are shown on the dot maps below. The dot map, below left, provides a spatial representation of anomalies calculated from the Global Historical Climatology Network (GHCN) data set of land surface stations using a 1961-1990 base period. The dot map, below right, is a product of a merged land surface and sea surface temperature anomaly analysis developed by Smith and Reynolds (2005). Temperature anomalies with respect to the 1961-1990 mean for land and ocean are analyzed separately and then merged to form the global analysis. Additional information on this product is available.Anomalously warm temperatures have covered much of the globe throughout the year. The January-November 2006 year-to-date map of temperature anomalies shows the presence of warmer than average temperatures across all land areas except central Russia. Warmer than average SSTs occurred in the North and South Atlantic, North Pacific and the South Indian Ocean, with cooler than average conditions observed in the South Pacific. During boreal fall, temperatures were above average across the entire globe, with the exception of Siberia, the central U.S., and western Canada, where cooler than average temperatures were observed. Warmer than average SSTs were observed across all oceans except in the South Pacific where cooler than average SSTs were observed. |
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During November, there
were above average temperatures across the U.S., Europe, southern
Asia, and eastern Russia. Cooler than average temperatures were
observed in Siberia, Turkey, southern Alaska, and western Canada.
Warmer than average SSTs occurred in the North Atlantic and the
Niño 3
and 1+2 regions. Temperatures in much of the central and
eastern equatorial Pacific were more than 1°C (1.80°F)
above average, and the average temperature in the Niño 3.4
region increased in November to approximately 1.21°C
(2.18°F). Please see the latest ENSO
discussion for additional information on the developing El
Niño event. |
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The mean position of upper level ridges of high pressure and troughs of low pressure (depicted by positive and negative 500-millibar height anomalies on the September - November 2006 map and the November map) are generally reflected by areas of positive and negative temperature anomalies at the surface, respectively. For other Global products see the Climate Monitoring Global Products page. |
Images of sea surface temperature conditions are available for all weeks during 2006 at the weekly SST page. |
Temperature Rankings and Graphics |
Effective with the
January, 2006 report, NCDC transitioned from the use of the
Operational Global Surface Temperature Index (Quayle et al. 1999) to the blended
land and ocean dataset developed by Smith and Reynolds (2005).
The differences between the two methods are discussed in Smith et al. 2005. November: November 2006 was the 4th warmest November since global surface records began in 1880 for global land and ocean surface temperatures. November land surface temperatures were 6th warmest, while ocean surface temperatures were 2nd warmest in the 127-year record behind 1997 in which a very strong 1997/1998 El Niño event was developing. September - November: For September - November 2006, the global land and ocean surface temperatures were 4th warmest on record. Land surface temperatures ranked 5th warmest, while ocean surface temperatures ranked 3rd warmest for the boreal fall. The year-to-date (January - November 2006) land and ocean combined temperature was tied for 6th warmest on record. |
Current Month / Seasonal / Year-to-date |
November | Anomaly | Rank | Warmest Year on Record |
---|---|---|---|
GlobalLandOcean Land and Ocean |
+0.74°C (+1.33°F) +0.52°C (+0.94°F) +0.58°C (+1.04°F) |
6th warmest 2nd warmest 4th warmest |
2004 (+1.40°C/2.52°F) 1997 (+0.54°C/0.97°F) 2004 (+0.73°C/1.31°F) |
Northern HemisphereLandOcean Land and Ocean |
+0.81°C (+1.46°F) +0.66°C (+1.19°F) +0.72°C (+1.30°F) |
7th warmest 1st warmest 4th warmest |
2001 (+1.73°C/3.11°F) 2004 (+0.59°C/1.06°F) 2004 (+0.96°C/1.73°F) |
Southern HemisphereLandOcean Land and Ocean |
+0.56°C (+1.01°F) +0.40°C (+0.72°F) +0.42°C (+0.76°F) |
9th warmest 7th warmest 9th warmest |
1982 (+1.45°C/2.61°F) 1997 (+0.55°C/0.99°F) 1997 (+0.58°C/1.04°F) |
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September-November | Anomaly | Rank | Warmest Year on Record |
---|---|---|---|
GlobalLandOcean Land and Ocean |
+0.75°C (+1.35°F) +0.50°C (+0.90°F) +0.57°C (+1.03°F) |
5th warmest 3rd warmest 4th warmest |
2005 (+1.15°C/2.07°F) 1997 (+0.54°C/0.97°F) 2005 (+0.64°C/1.15°F) |
Northern HemisphereLandOcean Land and Ocean |
+0.74°C (+1.33°F) +0.64°C (+1.15°F) +0.68°C (+1.22°F) |
5th warmest 1st warmest 4th warmest |
2005 (+1.27°C/2.29°F) 2003 (+0.63°C/1.13°F) 2005 (+0.82°C/1.48°F) |
Southern HemisphereLandOcean Land and Ocean |
+0.75°C (+1.35°F) +0.39°C (+0.70°F) +0.44°C (+0.79°F) |
6th warmest 6th warmest 5th warmest |
1997 (+0.85°C/1.53°F) 1997 (+0.55°C/0.99°F) 1997 (+0.59°C/1.06°F) |
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January-November | Anomaly | Rank | Warmest Year on Record |
---|---|---|---|
GlobalLandOcean Land and Ocean |
+0.73°C (+1.31°F) +0.45°C (+0.81°F) +0.52°C (+0.94°F) |
6th warmest 5th warmest 6th warmest |
2005 (+0.98°C/1.76°F) 1998 (+0.50°C/0.90°F) 2005 (+0.61°C/1.10°F) |
Northern HemisphereLandOcean Land and Ocean |
+0.80°C (+1.44°F) +0.49°C (+0.88°F) +0.60°C (+1.08°F) |
5th warmest 4th warmest 5th warmest |
2005 (+1.03°C/1.85°F) 2005 (+0.55°C/0.99°F) 2005 (+0.73°C/1.31°F) |
Southern HemisphereLandOcean Land and Ocean |
+0.54°C (+0.97°F) +0.42°C (+0.76°F) +0.44°C (+0.79°F) |
7th warmest 4th warmest 5th warmest |
2005 (+0.86°C/1.55°F) 1998 (+0.51°C/0.92°F) 1998 (+0.55°C/0.99°F) |
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The most current data may be accessed via the Global Surface Temperature Anomalies page.
PrecipitationThe maps below represent anomaly values based on the GHCN data set of land surface stations using a base period of 1961-1990. During September - November 2006, above average precipitation was observed in Scandinavia, Turkey, eastern Europe, southern India, western Alaska, eastern U.S., and southern parts of South America. Below average precipitation was observed in areas including eastern Australia, eastern Asia, central Europe, and the west coast of Canada.During November 2006, above average precipitation fell over areas that included northeastern and northwestern U.S., eastern Brazil, most parts of Scandinavia, and eastern Asia. Heavy rain and flooding occurred in the Greater Horn, where it is said to be the worst in 50 years. Iraq, Afghanistan, and the Northwest U.S. have as well experienced heavy rain and flooding. Below average precipitation was observed in eastern Australia, where the effects of long term drought continue. Southern Europe and central U.S. were also drier than average. Additional details on flooding and drought can also be found on the November Global Hazards page. |
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ENSO SST AnalysisClick here for animated loop |
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ReferencesPeterson, T.C. and R.S. Vose, 1997: An Overview of the Global Historical Climatology Network Database. Bull. Amer. Meteorol. Soc., 78, 2837-2849. Quayle, R. G., T. C. Peterson, A. N. Basist, and C. S. Godfrey, 1999: An operational near-real-time global temperature index. Geophys. Res. Lett., 26, 333-335. Smith, T. M., and R. W. Reynolds (2005), A global merged land air and sea surface temperature reconstruction based on historical observations (1880-1997), J. Clim., 18, 2021-2036. |