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. |
Temperature anomalies for December 2005 are shown on the two maps
below. The dot map on the 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 map on the right is an experimental
blended product of a merged land air and sea surface
temperature anomaly analysis which is based on data from the GHCN
of land temperatures and the Comprehensive Ocean-Atmosphere Data
Set (COADS) of Sea-Surface Temperature (SST) data. Temperature
anomalies with respect to 1961-1990 for land and ocean are analyzed
separately and then merged to form the global analysis. Additional
information on this product is available. |
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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 December 2005 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 2005 at the weekly SST page. |
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Current Month / Year-to-date |
December | Anomaly | Rank | Warmest Year on Record |
---|---|---|---|
GlobalLandOcean Land and Ocean |
+0.33°C (+0.59°F) +0.41°C (+0.74°F) +0.39°C (+0.70°F) |
33rd warmest 8th warmest 9th warmest |
1939 (+1.09°C/1.96°F) 1997 (+0.61°C/1.10°F) 1997 (+0.62°C/1.12°F) |
Northern HemisphereLandOcean Land and Ocean |
+0.30°C (+0.54°F) +0.42°C (+0.76°F) +0.37°C (+0.67°F) |
35th warmest 6th warmest 13th warmest |
1939 (+1.61°C/2.90°F) 2004 (+0.57°C/1.03°F) 2003 (+0.65°C/1.17°F) |
Southern HemisphereLandOcean Land and Ocean |
+0.06°C (+0.11°F) +0.38°C (+0.68°F) +0.32°C (+0.58°F) |
55th warmest 9th warmest 13th warmest |
1972 (+0.78°C/1.40°F) 1997 (+0.61°C/1.10°F) 1997 (+0.64°C/1.15°F) |
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January-December | Anomaly | Rank | Warmest Year on Record |
---|---|---|---|
GlobalLandOcean Land and Ocean |
+0.91°C (+1.64°F) +0.44°C (+0.79°F) +0.58°C (+1.04°F) |
2nd warmest 2nd warmest 2nd warmest |
1998 (+0.97°C/1.75°F) 1998 (+0.47°C/0.85°F) 1998 (+0.62°C/1.12°F) |
Northern HemisphereLandOcean Land and Ocean |
+0.96°C (+1.73°F) +0.51°C (+0.92°F) +0.69°C (+1.24°F) |
2nd warmest warmest 2nd warmest |
1998 (+1.02°C/1.84°F) 2nd - 2004 (+0.50°C/0.90°F) 1998 (+0.70°C/1.26°F) |
Southern HemisphereLandOcean Land and Ocean |
+0.67°C (+1.21°F) +0.40°C (+0.72°F) +0.45°C (+0.81°F) |
2nd warmest 6th warmest 4th warmest |
1998 (+0.77°C/1.39°F) 1998 (+0.47°C/0.85°F) 1998 (+0.52°C/0.94°F) |
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The most current data may be accessed via the Global Surface Temperature Anomalies page.
The maps below represent anomaly values based on the GHCN data set
of land surface stations using a base period of 1961-1990. During
December 2005, above average precipitation fell over areas that
include the Amazon Basin, the Philippines, India, the western and
northeastern U.S., and central Europe. Below average precipitation
was observed in the Iberian Peninsula, South Africa, eastern
Australia, Hawaii and from the U.S. southern Plains northward to
the Great Lakes region. |
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