TUESDAY, APRIL 22, 2008
Land Temperatures Worldwide Hit New Records
As USA Today puts it, Earth is still running a fever. Land temperatures worldwide hit new records last month, while in the U.S. temperatures were about average.
A National Oceanic and Atmospheric Administration news release says:
- The global land surface temperature was
the warmest on record for March, 3.3°F above the 20th century mean of
40.8°F. Temperatures more than 8°F above average covered much of the
Asian continent. Two months after the greatest January snow cover
extent on record on the Eurasian continent, the unusually warm
temperatures led to rapid snow melt, and March snow cover extent on the
Eurasian continent was the lowest on record.
- The
global surface (land and ocean surface) temperature was the second
warmest on record for March in the 129-year record, 1.28°F above the
20th century mean of 54.9°F. The warmest March on record (1.33°F above
average) occurred in 2002.
- Although
the ocean surface average was only the 13th warmest on record, as the
cooling influence of La Niņa in the tropical Pacific continued, much
warmer than average conditions across large parts of Eurasia helped
push the global average to a near record high for March.
- Despite
above average snowpack levels in the U.S., the total Northern
Hemisphere snow cover extent was the fourth lowest on record for March,
remaining consistent with boreal spring conditions of the past two
decades, in which warming temperatures have contributed to anomalously
low snow cover extent.
- Some
weakening of La Niņa, the cold phase of the El Niņo-Southern
Oscillation, occurred in March, but moderate La Niņa conditions
remained across the tropical Pacific Ocean.
Posted at 12:01:00 AM
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