NOAA's National Centers for Environmental Information
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 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. |
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| 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 |
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| 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) |
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| 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) |
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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
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. |
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|
Peterson, T.C. and R.S. Vose, 1997: An Overview of the Global
Historical Climatology Network Database. Bull. Amer. Meteorol.
Soc., 78, 2837-2849. |