Global Analysis - July 2005


Global Highlights:

  • Based on preliminary data, global averaged combined land and sea surface temperature for July 2005 was 2nd warmest on record.
  • July temperatures were above average in Alaska, most of the U.S. and eastern Australia. Colder-than-average conditions occurred in the U.S. southern Great Plains, Japan and parts of Brazil.
  • Precipitation during July was above average in the eastern U.S., Japan and parts of Europe, with drier than average conditions in the U.S. middle Mississippi Valley, most of Brazil and along the Gulf of Guinea coastline.
  • Neutral ENSO conditions continued during July.

Contents of this Section:

This is a break in the document
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.
This is a break in the document

Top of PageIntroduction

Temperature anomalies for July 2005 are shown on the two maps below. The dot map on the left uses anomalies that were 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 weekly product based on data from the Comprehensive Ocean-Atmosphere Data Set (COADS) of SST data. During July, there were above average temperatures in most of Alaska, the majority of the U.S., Mexico, Europe, Algeria, South Africa, Siberia and eastern Australia. Cooler than average temperatures were observed in the U.S. southern Great Plains, western Brazil, Pakistan, Japan and parts of western Australia.

Current month's Temperature Dot map
larger image
End of month weekly SST map
larger image

Above average SSTs are evident in the product above. Much warmer than average anomalies occurred over the northern Atlantic, the northern Pacific, particularly off the coast of Alaska. Areas of slightly warmer than average temperatures were observed in the equatorial Pacific, indicating a continuation of neutral ENSO conditions. Slightly cooler than average SSTs were observed off the coasts of Ecuador and Peru.

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 July 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

This is a break in the document

Top of Page Temperature Rankings and Graphics

Current Month / Year-to-date
July Anomaly Rank Warmest Year on Record
Global
Land
Ocean
Land and Ocean
+0.96°C (+1.73°F)
+0.44°C (+0.80°F)
+0.60°C (+1.08°F)
2nd warmest
2nd warmest
2nd warmest
1998 (+0.97°C/1.75°F)
1998 (+0.51°C/0.92°F)
1998 (+0.65°C/1.17°F)
Northern Hemisphere
Land
Ocean
Land and Ocean
+0.97°C (+1.75°F)
+0.59°C (+1.06°F)
+0.75°C (+1.35°F)
warmest
warmest
warmest
2nd - 2002 (+0.92°C/1.66°F)
2nd - 1998 (+0.56°C/1.01°F)
2nd - 1998 (+0.70°C/1.26°F)
Southern Hemisphere
Land
Ocean
Land and Ocean
+0.90°C (+1.62°F)
+0.33°C (+0.60°F)
+0.44°C (+0.80°F)
2nd warmest
7th warmest
3rd warmest
1998 (+1.14°C/2.05°F)
1998 (+0.49°C/0.88°F)
1998 (+0.62°C/1.12°F)

Global Land and Ocean Triad plot
larger image
Global Hemisphere Triad plot
larger image

January-July Anomaly Rank Warmest Year on Record
Global
Land
Ocean
Land and Ocean
+0.95°C (+1.71°F)
+0.43°C (+0.77°F)
+0.59°C (+1.06°F)
3rd warmest
2nd warmest
3rd warmest
2002 (+1.15°C/2.07°F)
1998 (+0.51°C/0.92°F)
1998 (+0.69°C/1.24°F)
Northern Hemisphere
Land
Ocean
Land and Ocean
+0.94°C (+1.70°F)
+0.50°C (+0.90°F)
+0.67°C (+1.21°F)
5th warmest
2nd warmest
3rd warmest
2002 (+1.28°C/2.30°F)
1998 (+0.51°C/0.92°F)
1998 (+0.77°C/1.39°F)
Southern Hemisphere
Land
Ocean
Land and Ocean
+0.81°C (+1.46°F)
+0.40°C (+0.72°F)
+0.48°C (+0.86°F)
2nd warmest
4th warmest
3rd warmest
1998 (+0.88°C/1.58°F)
1998 (+0.52°C/0.94°F)
1998 (+0.59°C/1.06°F)

Global Land and Ocean Triad plot
larger image
Global Hemisphere Triad plot
larger image

The most current data may be accessed via the Global Surface Temperature Anomalies page.

This is a break in the document

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 July 2005, above average precipitation fell over the eastern U.S., eastern Europe, parts of Scandinavia, central regions of India and portions of Siberia. Below average precipitation was observed over the U.S. upper and middle Mississippi Valley, most of Brazil, southeastern China, western Australia, along the Gulf of Guinea coastline and South Africa.

Precipitation Dot map in Millimeters
larger image
Percent Precipitation Dot map
larger image

This is a break in the document

Top of Page ENSO SST Analysis




Last week of the month's ENSO condtions Map
Click here for animated loop



  • SSTs remained near average to slightly above average in the equatorial Pacific during July, indicative of ENSO neutral conditions (shown in the adjacent animation of weekly sea surface temperature anomalies). A comprehensive summary of July 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

This is a break in the document

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 July 2005, published online August 2005, retrieved on November 29, 2014 from http://www.ncdc.noaa.gov/sotc/global/2005/7.