Climate in
During this spring, mean surface
air temperatures were above normal in most of China, with anomalies above 1¡æ were observed in
Jiangnan, Jianghuai, Jianghan, the middlel and lower reaches of the Yellow
River, western Inner Mongolia, western Tibet and parts of Northwest China. In
the season, precipitation totals were 30~50% more than normal in parts of
Guangdong and Fujian, most of Southwest China, northern and central-southern
Xinjiang, northwestern Gansu, western Qinghai and parts of Inner Mongolia, with
200% more than normal in central and southern Xinjiang. Meanwhile, rainfall
totals were less than 30~50% in most of Northeast China, western Tibet and
western Xinjiang.
Climate in the world
During the spring, mean
surface air temperatures 1¡æ above normal were observed in most of China, central
Asia, most of West Asia, southwestern Europe, northeastern Africa and most of
North America, with 3¡æ
above normal in Kazakhstan and eastern Canada. Meanwhile, temperatures were near
or below normal in the other regions, and they were 1¡æ below normal in parts of Europe, most of Siberian,
Alaska, South Africa and local of Australia.
In this spring, rainfall totals
were 30% more than normal in parts of China, most of India, parts of Central
Siberia, far East region of Russia, most of Europe, northwestern America,
southern South Africa, northern Australia, eastern Brazil and northern
Venezuela. Meanwhile, precipitation totals were 30~100% less than normal in the
region from Northeast China to eastern Mongolia, central-northern Siberia, most
of central Asia, Oman, most of America, local of western Africa, southeastern
and offshore of western Australia and southern South America, and no rainfall
was observed in local regions.
General Circulation
Features
Northern Hemisphere:
During Spring
2006, in the 500hPa geopotential height anomaly field, below ¨C4 dam anomalies
covered northern Europe. Meanwhile, positive departures above 4 dam controlled
parts of central Asia, Mediterranean Sea and parts of northern Africa, the area
from Canada to polar region, and the northwestern North Pacific, with central
values above 8 dam. For the season, the Northwest Pacific subtropical high was
near normal.
Southern
Hemisphere: In the 500hPa geopotential height anomaly field, negative
anomalies below -4
dam controlled southeastern South Pacific and oceans south to Africa. Meanwhile,
positive departures above 4 dam covered southern South
Atlantic, southern South Indian
Ocean, and parts of Antarctica.