Global Analysis - August 2005


Global Highlights:

  • Based on preliminary data, global averaged combined land and sea surface temperature for June-August 2005 was 2nd warmest on record, 3rd warmest on record for August 2005.
  • June-August temperatures were above average over Europe, Scandinavia, South Africa and the majority of North America. There were no notable colder-than-average conditions during boreal summer.
  • Precipitation during June-August was above average over Scandinavia, the southeastern U.S., and much of Australia, with drier than average conditions over the U.S. Great Lakes region, along the Gulf of Guinea coastline and most of India.
  • Neutral ENSO conditions continued during August.

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 June-August and August 2005 are shown on the four maps below. The dot maps on the left provide 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 maps on the right are a blended product of a merged land air and sea surface temperature anomaly analysis which is based on data from the Global Historical Climatology Network (GHCN) of land temperatures and the Comprehensive Ocean-Atmosphere Data Set (COADS) of SST data. Temperature anomalies with repsect to 1961-1990 are analyzed separately and then merged to form the global analysis. Additional information on this product is available.

During the boreal summer, above average temperatures occurred over Alaska, Canada, India, China, the majority of the U.S., the western South American coastline and Australia. There were no notable cool anomalies during June-August 2005.

Much warmer than average SSTs occurred over the Northern Pacific and the Tropical Atlantic. Cooler than average conditions were observed off the coasts of Ecuador, Peru and the Gulf of Guinea.
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 August, there were above average temperatures over Alaska, Scandinavia, the Middle East, Mongolia, the eastern half of North America and the U.S. Pacific Northwest. Cooler than average temperatures were observed over parts of Mexico, east-central Siberia and the U.S. Great Plains.

Much warmer than average SSTs occurred over the Northern Pacific and the Northern Atlantic. Cooler than average conditions were observed in the Southern Pacific and Southern Atlantic.
Current months 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 August 2005 map and the June-August 2005 maps) 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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Top of Page Temperature Rankings and Graphics

Current Month / Seasonal / Year-to-date
August Anomaly Rank Warmest Year on Record
Global
Land
Ocean
Land and Ocean
+0.77°C (+1.39°F)
+0.49°C (+0.88°F)
+0.57°C (+1.03°F)
4th warmest
2nd warmest
3rd warmest
1998 (+0.96°C/1.73°F)
1998 (+0.50°C/0.90°F)
1998 (+0.64°C/1.15°F)
Northern Hemisphere
Land
Ocean
Land and Ocean
+0.86°C (+1.55°F)
+0.64°C (+1.15°F)
+0.73°C (+1.31°F)
4th warmest
warmest
3rd warmest
2003 (+1.07°C/1.93°F)
2nd - 2003 (+0.61°C/1.10°F)
2003 (+0.79°C/1.42°F)
Southern Hemisphere
Land
Ocean
Land and Ocean
+0.51°C (+0.92°F)
+0.37°C (+0.67°F)
+0.40°C (+0.72°F)
11th warmest
6th warmest
4th warmest
1884 (+1.42°C/2.56°F)
1998 (+0.42°C/0.76°F)
1998 (+0.47°C/0.85°F)

Global Land and Ocean Triad plot
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Global Hemisphere Triad plot
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June-August Anomaly Rank Warmest Year on Record
Global
Land
Ocean
Land and Ocean
+0.95°C (+1.71°F)
+0.45°C (+0.81°F)
+0.60°C (+1.08°F)
2nd warmest
2nd warmest
2nd warmest
1998 (+0.96°C/1.73°F)
1998 (+0.49°C/0.88°F)
1998 (+0.64°C/1.15°F)
Northern Hemisphere
Land
Ocean
Land and Ocean
+1.00°C (+1.80°F)
+0.58°C (+1.04°F)
+0.75°C (+1.35°F)
warmest
warmest
warmest
2nd - 1998 (+0.99°C/1.78°F)
2nd - 1998 (+0.55°C/0.99°F)
2nd - 1998 (+0.73°C/1.31°F)
Southern Hemisphere
Land
Ocean
Land and Ocean
+0.73°C (+1.31°F)
+0.35°C (+0.63°F)
+0.42°C (+0.76°F)
2nd warmest
7th warmest
3rd warmest
1998 (+0.81°C/1.46°F)
1998 (+0.46°C/0.83°F)
1998 (+0.52°C/0.94°F)

Global Land and Ocean Triad plot
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Global Hemisphere Triad plot
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January-August Anomaly Rank Warmest Year on Record
Global
Land
Ocean
Land and Ocean
+0.94°C (+1.70°F)
+0.44°C (+0.80°F)
+0.59°C (+1.06°F)
3rd warmest
2nd warmest
3rd warmest
2002 (+1.08°C/1.94°F)
1998 (+0.51°C/0.92°F)
1998 (+0.68°C/1.22°F)
Northern Hemisphere
Land
Ocean
Land and Ocean
+0.94°C (+1.70°F)
+0.51°C (+0.92°F)
+0.68°C (+1.22°F)
3rd warmest
2nd warmest
3rd warmest
2002 (+1.20°C/2.16°F)
1998 (+0.52°C/0.94°F)
1998 (+0.77°C/1.39°F)
Southern Hemisphere
Land
Ocean
Land and Ocean
+0.80°C (+1.44°F)
+0.40°C (+0.72°F)
+0.47°C (+0.85°F)
2nd warmest
4th warmest
3rd warmest
1998 (+0.86°C/1.55°F)
1998 (+0.51°C/0.92°F)
1998 (+0.58°C/1.04°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 the 2005 boreal summer, above average precipitation fell over the southeastern U.S., the U.S. northern Great Plains, the western coast of Canada, southeast Asia, eastern Europe, much of Russia and the majority of Australia. Below average precipitation was observed in France, Spain, South Africa, most of India, along the U.S. western Gulf Coast and Great Lakes.

During August 2005, above average precipitation fell over central America, eastern China, most of eastern Europe, the U.S. middle Mississippi and Ohio Valleys and parts of the Carribean. While below average precipitation was observed in Venezuela, India, Thailand, South Africa, the southeastern coast of Australia, the northeastern U.S., southern portions of Brazil and western Europe.

Heavy rain led to flooding in several regions of the world, including Bulgaria, Romania, Hungary, Sudan and Ethiopia. Information on these events are available in the August Global Hazards report.

Precipitation Dot map in Millimeters for June-August
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Percent Precipitation in Millimeters for August
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Top of Page ENSO SST Analysis




Last week of the month's ENSO condtions Map
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  • SSTs remained near average to slightly below average in the eastern equatorial tropical Pacific during August, indicative of ENSO neutral conditions (shown in the adjacent animation of weekly sea surface temperature anomalies). A comprehensive summary of August 2005 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 2005 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.

Citing This Report

NOAA National Climatic Data Center, State of the Climate: Global Analysis for August 2005, published online September 2005, retrieved on November 23, 2014 from http://www.ncdc.noaa.gov/sotc/global/2005/8.