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IRI Climate Digest June 2000

June Global Climate Summary

Climatological Background In June, the sun's maximum northward location is achieved at 23.6 degrees north. Surface heating of the continents has initiated summer monsoonal systems or northern hemisphere warm season rains. In the Southern Hemisphere winter is setting in with fewer daylight hours and cooler temperatures. The southern parts of South Africa, Australia and South America are now in the path of mid latitude storm tracks. 

Monthly Mean Temperature (1961-1990), data from the Climate Research Unit, University of East Anglia Click for options andmore information
Monthly Mean Precipitation (1961-1990), with data from the Climate Research Unit, University of East Anglia Click for optionsand more information

Temperatures Over Land
Europe and North Africa:   Southern and central Europe and Northern Africa continued to experience well above average temperatures. 
Asia:  Temperatures were 1 to 3 C  above average in a broad west-east band extending from west central Russia to Siberia and into northeastern China.
Australia: Northern coastal regions of Western Australia and the Northern Territory were 1 to 2 C cooler than average.
South America:  Above average temperatures were observed over most other sections of the continent.
North America:  Cooler than average temperatures characterized the interior of the continent with the exception of the west coast and Alaska.

Temperature Difference from the 1961-1990 mean, with data from NCEP Climate Prediction Center, CAMS. Click foroptions and more information

Africa:  Rainfall continued below average in northern Kenya, south-central Ethiopia and southeastern Sudan.  Seasonal rains developed in near average fashion across western Africa and into the Sahel.
Australia:  Rainfall was below average across southern Victoria and Tasmania as well as coastal sections of south central Western Australia. 
Indonesia:    Above average rainfall was once again observed over most of the region.
Southern and Southeast Asia:  Heavy rainfall was observed in Bangladesh and Thailand.  The summer monsoon developed in a near average progression across India although areas in the northwest saw below average rainfall for the month.
China:   Below average rainfall was again observed across much of Manchuria and the North China Plain.  Locally heavy rains fell along eastern coastal sections and unusually heavy rains fell in Gansu province in the north.
South America:  Central Chile had unusually heavy rainfall during June with heavy snow in the mountains of both Chile and western Argentina.  The dry season developed across southern Brazil in the wake of an unusually dry rainy season.
North and Central America:  Wet conditions prevailed from northeastern Canada southwestward to the Mexican border helping to ease drought conditions in the United States.  Below average rainfall continued in the southeastern United States intensifying local drought conditions there.  The rainy season developed across southern Mexico and intensified across central America with locally heavy rains. 
Europe:  Precipitation was well below average across much of south central sections during June.

Precipitation Difference from 1961-1990 mean, with data from NCEP Climate Prediction Center, CAMS-OPI. Click for options and more information

Oceanic Conditions
 Tropics: La Niña (colder than average) conditions continue to weaken in the central equatorial Pacific. Neither oceanic observations nor model predictions suggest a transition towards warmer than average conditions (El Niño) in the coming months. 
 Extratropics: Large positive anomalies in the Northern Hemisphere mid latitudes (e.g., +4 C off the northern coast of Japan). 

Monthly Sea Surface Temperature Difference from the 1950-1979 mean, with data from the Environmental Modeling Center, NCEP/NOAA. Click for options and more information
Material for this Global Climate Summary has been extracted from the IRI Climate Data Library, the NOAA NCEP Climate Prediction Center, the Climate Diagnostics Center , and the NOAA ERL Pacific Marine Environmental Laboratories. Additional information has been obtained from the Bureau of Meteorology, Australia, and CPTEC, Brazil.

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