IRI Climate Digest July
July Global Climate Summary
Climatological Background In July, heating of
the continents in the Northern Hemisphere results in strengthened monsoon
systems which bring rains to West Africa, South Asia, and southwestern
In the Southern Hemisphere winter has set in with
stronger north-south temperature gradients fueling active mid-latitude
Monthly Mean Temperature (1961-1990), data from the Climate Research
Unit, University of East Anglia
|Monthly Mean Precipitation (1961-1990), with data from
the Climate Research Unit, University of East Anglia|
Temperatures Over Land
Africa and the Middle East:
Above average temperatures characterized much of Africa from the equator
northeastward through the Middle East.
Above average conditions were also
experienced in Central Asia eastward to the Pacific.
Europe: Russia experienced above average temperature while below
temperatures were recorded in the Baltic countries.
South America: Much colder than average conditions were
southern Bolivia south through much of the Southern Cone east of the Andes.
Central and North America: Above average temperatures were
from Mexico northward into the high plains of the United States and into
northern Canada. Relatively cold
conditions also covered the northeastern west coast of the United States.
Australia: Interior sections of the continent
warmer than average conditions.
|Temperature Difference from the 1961-1990 mean, with
data from NCEP Climate Prediction Center, CAMS.|
Africa: Seasonal rains continued in near average fashion across
western Africa and into the Sahel with the exception of some dry areas in
Senegal and Mali.
Australia: Below to slightly below average rainfall was
across much of eastern Australia.
China, Korea and Japan: Most of China, Korea, and Japan
remained drier than average. Above
average rains fell along southeastern coastal sections of China and in the
Philippines: Above average
rainfall associated with tropical storms was recorded in the northern
Southern and Southeast Asia: Southern India eastward
through Bangladesh and into eastern Thailand experienced below average
monsoon rainfall in July. Above average summer monsoon rainfall developed in northwestern India.
South America: Above average rainfall was recorded along the North
Atlantic coast and into the west central Amazon southward into Bolivia.
Average to above average rains returned to southern Brazil.
North and Central America: Dry conditions prevailed from Guatemala and Mexico northward
through the south-central United States.
Europe: Precipitation was above average across Europe from France
eastward into Russia.
|Precipitation Difference from 1961-1990 mean, with
data from NCEP Climate Prediction Center, CAMS-OPI.|
Tropics: La Niña (colder than average) conditions
continue to wane in the Pacific.
Ocean experienced well above average temperature as did the
Atlantic along the African coast.
Monthly Sea Surface Temperature Difference from the 1950-1979 mean,
with data from the Environmental Modeling Center, NCEP/NOAA.
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