Introduction
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January temperature anomalies calculated from the Global Historical Climatology Network data set of land surface stations using a 1961-1990 base period also show above average temperatures throughout Canada, Alaska and much of the western United States. Monthly temperatures were 4-6°C (7.2-10.8°F) above the mean. Notable cool anomalies were present throughout the eastern U.S., northern Europe, and parts of southern Asia where monthly temperatures were as much as 3-6°C (5.4-10.8°F) below average. |
Temperature
January
For January 2003, the global average land and ocean surface temperature was 0.60°C (1.08°F) above the 1880-2002 average, ranking as the third warmest January in the period of record
The warmest January occurred in 2002, with an anomaly of +0.72°C (+1.30°F)
Globally averaged land temperatures were second warmest on record, or 1.03°C (1.85°F) above the long-term mean
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January 2003 temperatures averaged across the Northern Hemisphere were third warmest on record, or 0.68°C (1.22°F) above the long term mean
Temperatures averaged throughout the Southern Hemisphere were fourth warmest, or 0.53°C (0.95°F) above average
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Precipitation
During January 2003, much above average precipitation fell across most of Europe into northern Africa, as well as southern Brazil and parts of southeast China
Below average precipitation was observed across most of the U.S., the eastern half of Australia and northern Brazil
Additional regional analysis can be found on the Global Hazards page
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Microwave Sounding Unit Data
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Temperatures in the lowest 8km (5 miles) of the troposphere were 0.36°C (0.65°F) above average during January 2003, the second warmest January in the satellite period of record (1979 to present)
Temperatures in the Northern Hemisphere were second warmest on record for January, 0.45°C (0.81°F) above the mean
Temperatures in the Southern Hemisphere were second warmest on record for January, 0.27°C (0.49°F) above the mean
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January 2003 temperatures were below average in the lower stratosphere, or 0.32°C (0.58°F) cooler than the mean
This was the tenth consecutive January with below average temperatures in the lower stratosphere
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Lower tropospheric and lower stratospheric temperature data are collected by NOAA's TIROS-N polar-orbiting satellites and adjusted for time-dependent biases by NASA and the Global Hydrology and Climate Center at the University of Alabama in Huntsville.
For additional details on precipitation and temperatures in January, see the Global Hazards 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.
For all climate questions other than questions concerning this report, please contact the National Climatic Data Center's Climate Services Division:
Climate Services Division NOAA/National Climatic Data Center 151 Patton Avenue, Room 120 Asheville, NC 28801-5001 fax: 828-271-4876 phone: 828-271-4800 email: ncdc.orders@noaa.gov
For questions about this report, please contact:
David Easterling NOAA/National Climatic Data Center 151 Patton Avenue Asheville, NC 28801-5001 fax: 828-271-4328 email: David.Easterling@noaa.gov
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Jay Lawrimore NOAA/National Climatic Data Center 151 Patton Avenue Asheville, NC 28801-5001 fax: 828-271-4328 email: Jay.Lawrimore@noaa.gov
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