Global Analysis - February 2006


Global Highlights:

  • Based on preliminary data, globally averaged combined land and sea surface temperature was 8th warmest on record for boreal winter (December 2005 - February 2006), 7th warmest for February.
  • December 2005 - February 2006 temperatures were above average in North America, Scandinavia and parts of India. Colder-than-average conditions occurred in Europe, Russia and the western coast of Australia.
  • Precipitation during December 2005 - February 2006 was above average in the Amazon Basin, western Australia and the U.S. Pacific Northwest, with drier-than-average conditions in western Europe, western Australia and the U.S. Great Plains and Southwest.
  • ENSO conditions during February indicate the presence of a weak La Niña episode.

Contents of this Section:

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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.
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Top of PageIntroduction

Temperature anomalies for December 2005 - February 2006 and February are shown on the four 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 a product of a merged land surface 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.

During boreal winter, temperatures were above average across Iceland, Scandinavia, India, southeast Asia and much of North America. Cooler than average temperatures were observed in Russia, Eastern Europe, and along the western coast of Australia.

Warmer than average SSTs occurred over the North Atlantic and South Pacific. Cooler than average conditions were observed in the Niño 3.4 region, indicative of the La Niña episode that developed by mid-January, please see the latest ENSO discussion for further information.
Current season's Land Surface Temperature Dot map
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Current season's blended Land and sea surface Temperature Dot map
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During February 2006, there were above average temperatures in Alaska, Canada, Mexico, Brazil, Niger and most of Asia. Cooler than average temperatures were observed in Eastern Europe, the Iberian Peninsula and the U.S. northern Rockies.

Warmer than average SSTs occurred in the South Pacific and the North Atlantic. Cooler than average conditions were observed in the Niño 3.4 region, indicative of the La Niña episode that developed by mid-January, please see the latest ENSO discussion for further information.
Current month's Land SurfaceTemperature Dot map
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Current month's blended Land and sea surface Temperature Dot map
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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 - February 2006 map and the February 2006 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.

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Top of 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.
Current Month / Seasonal / Year-to-date
February Anomaly Rank Warmest Year on Record

Global

Land
Ocean
Land and Ocean

+0.96°C (+1.73°F)
+0.37°C (+0.67°F)
+0.53°C (+0.95°F)

8th warmest
6th warmest
6th warmest

2002 (+1.62°C/2.92°F)
1998 (+0.55°C/0.99°F)
1998 (+0.82°C/1.48°F)

Northern Hemisphere

Land
Ocean
Land and Ocean


+1.08°C (+1.94°F)
+0.31°C (+0.56°F)
+0.60°C (+1.08°F)


10th warmest
6th warmest
7th warmest


2002 (+2.12°C/3.82°F)
1998 (+0.53°C/0.95°F)
2002 (+1.03°C/1.85°F)

Southern Hemisphere

Land
Ocean
Land and Ocean


+0.57°C (+1.03°F)
+0.44°C (+0.79°F)
+0.46°C (+0.83°F)


8th warmest
8th warmest
5th warmest


1986 (+1.23°C/2.21°F)
1998 (+0.57°C/1.03°F)
1998 (+0.62°C/1.12°F)

Global Land and Ocean Triad plot
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Global Hemisphere Triad plot
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December-February Anomaly Rank Warmest Year on Record

Global

Land
Ocean
Land and Ocean

+0.72°C (+1.30°F)
+0.39°C (+0.70°F)
+0.48°C (+0.86°F)

8th warmest
6th warmest
8th warmest

2002 (+1.20°C/2.16°F)
1998 (+0.55°C/0.99°F)
2004 (+0.65°C/1.17°F)

Northern Hemisphere

Land
Ocean
Land and Ocean

+0.74°C (+1.33°F)
+0.35°C (+0.63°F)
+0.50°C (+0.90°F)

11th warmest
6th warmest
9th warmest

2002 (+1.55°C/2.79°F)
1998 (+0.52°C/0.94°F)
2004 (+0.81°C/1.46°F)

Southern Hemisphere

Land
Ocean
Land and Ocean

+0.63°C (+1.13°F)
+0.44°C (+0.79°F)
+0.46°C (+0.83°F)

6th warmest
6th warmest
5th warmest

1998 (+0.81°C/1.46°F)
1998 (+0.57°C/1.03°F)
1998 (+0.61°C/1.10°F)

Global Land and Ocean Triad plot
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Global Hemisphere Triad plot
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January-February Anomaly Rank Warmest Year on Record

Global

Land
Ocean
Land and Ocean

+0.62°C (+1.12°F)
+0.38°C (+0.68°F)
+0.44°C (+0.79°F)

15th warmest
6th warmest
8th warmest

2002 (+1.53°C/2.75°F)
1998 (+0.54°C/0.97°F)
2002 (+0.71°C/1.28°F)

Northern Hemisphere

Land
Ocean
Land and Ocean


+0.60°C (+1.08°F)
+0.31°C (+0.56°F)
+0.42°C (+0.76°F)


22nd warmest
7th warmest
12th warmest


2002 (+1.99°C/3.58°F)
1998 (+0.52°C/0.94°F)
2002 (+0.98°C/1.76°F)

Southern Hemisphere

Land
Ocean
Land and Ocean


+0.68°C (+1.22°F)
+0.44°C (+0.79°F)
+0.47°C (+0.85°F)


5th warmest
8th warmest
5th warmest


2003 (+0.81°C/1.46°F)
1998 (+0.56°C/1.01°F)
1998 (+0.60°C/1.08°F)

Global Land and Ocean Triad plot
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Global Hemisphere Triad plot
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The most current data may be accessed via the Global Surface Temperature Anomalies page.

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Top of Page Precipitation

The maps below represent anomaly values based on the GHCN data set of land surface stations using a base period of 1961-1990. During boreal winter, above average precipitation fell over areas that include the Amazon Basin, Iceland, southern Chile, eastern Australia and the U.S. Pacific Northwest and Northeast regions. Below average precipitation was observed in southern Brazil, the majority of Europe, the western coast of Canada, along the U.S. Gulf Coast and parts of eastern Australia.

During February 2006, above average precipitation fell over areas that include Indonesia, Japan, South Africa, along the coast of Alaska and parts of Brazil. Below average precipitation was observed across eastern Australia, India, the United Kingdom and much of the U.S.


Precipitation Dot map in Millimeters for Boreal Winter
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Precipitation Dot map in Millimeters for February
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Top of Page ENSO SST Analysis




Last week of the month's ENSO condtions Map
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  • Sea Surface Temperatures were cooler than average across the central equatorial Pacific, indicative of La Niña conditions (shown in the adjacent animation of weekly sea surface temperature anomalies). A comprehensive summary of February 2006 ENSO conditions can be found on the ENSO monitoring page. For the latest advisory on ENSO conditions go to NOAA's Climate Prediction Center (CPC) and the CPC ENSO Diagnostic Discussion

  • Images of sea surface temperature conditions are available for all weeks during 2006 at the weekly SST page

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Top of Page References


Peterson, 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.

Citing This Report

NOAA National Climatic Data Center, State of the Climate: Global Analysis for February 2006, published online March 2006, retrieved on August 1, 2014 from http://www.ncdc.noaa.gov/sotc/global/2006/2.