August 10, 1998
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![]() SSMI Derived Temperature Anomalies July 1998 |
For more information, refer to ...
SSMI Derived Products
Global Historical Climatology Network (GHCN)
...the land data anomalies...
...the ocean data anomalies...
...the land and ocean data combined into an anomaly index ...
...all in degrees C with respect to long-term (1880-1998) mean.
The period January - July 1998 was the warmest Jan-Jul of the century.
The period January-July 1998 was the warmest since reliable records began in 1880, according to the National Climatic Data Center. This conclusion was based on separately examining land data using the Global Historical Climatology Network; ocean data using the National Centers for Environmental Prediction (NCEP) - Reynolds Sea Surface Temperatures (SST) blended with the NOAA Comprehensive Ocean-Atmosphere Data Set (COADS) and the United Kingdom Meteorological Office Historical SST analysis; and a global surface temperature index that combines the ocean and land data. The final anomaly may change due to inclusion of new areas of the world not currently represented. Each of the anomaly time series is based on its respective 1880-1998 mean.
![]() SSMI Derived Temperature Anomalies Jan-July 1998 |
For more information, refer to ...
SSMI Derived Products
Global Historical Climatology Network (GHCN)
...the land data anomalies...
...the ocean data anomalies...
...the land and ocean data combined into an anomaly index ...
...all in degrees C with respect to long-term (1880-1998) mean.
Each month from January through July 1998 has broken the previous record.
During the past few decades, global temperatures have persistently broken previous record highs every few years, but never to the extent observed in 1998. Each month this year, from January through July, has set a new all-time record high global temperature. This is unprecedented and is not likely to occur in a stationary climate. New analyses of tree-rings, historical records, and other proxy measurements indicate that these temperatures are warmer than the planet has experienced for the last 600 years (Michael Mann, University of Massachusetts, Amherst; the work was presented in the journal "Nature" in April 1998).
See Also...
...the recent and past anomalies
Recent Climate Extremes including Global Climate Perspectives Report for July
1998 vs. Previous Record for each month January - May
Thematic Map of Global Temperature Anomalies for January-May
Top 10 El Niño Events of the 20th Century
January-May: Record-breaking Warmth Continues
April Anomaly Doubles previous record warm anomaly globally
January-March warmest on record globally; Wetter but cooler-than-normal in US.
Warmest February on record globally
January and February, 1998, warmest and wettest on record in US
1997-98 Warmest Winter on record globally
1997 Warmest Year of the Century
As data are being received, scientists at The National Oceanic and Atmospheric Administration's National Climatic Data Center are automatically updating the Global Historical Climatology Network data base to maintain a global climate perspective in near real-time.
for further information on GHCN, contact:
Thomas Peterson
NOAA/National Climatic Data Center
151 Patton Avenue
Asheville, NC 28801-5001
fax: 828-271-4328
email: thomas.c.peterson@noaa.gov
for further information on SSMI or NCEP OI sea surface temperatures, contact:
Alan Basist
NOAA/National Climatic Data Center
151 Patton Avenue
Asheville, NC 28801-5001
fax: 828-271-4328
email: alan.basist@noaa.gov
Additional Links and Resources...
NNDC Data and Products
For further information, contact:
Mike Crowe
NOAA/National Climatic Data Center
151 Patton Avenue
Asheville, NC 28801-5001
fax: 828-271-4328
email: michael.crowe@noaa.gov
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