he+zhang-2011-1110-assignment6

**climate data**
The city has a rather dry, monsoon-influenced humid continental climate ( Köppen climate classification Dwa), characterised by hot, humid summers due to the East Asian monsoon, and generally cold, windy, dry winters that reflect the influence of the vast Siberian anticyclone .Spring can bear witness to sandstorms blowing in from the Mongolian steppe, accompanied by rapidly warming, but generally dry, conditions. Autumn, like spring, sees little rain, but is crisp and short. The monthly daily average temperature in January is −3.7 °C (25.3 °F), while in July it is 26.2 °C (79.2 °F). Precipitation averages around 570 mm (22.4 in) annually, with the great majority of it falling in the summer months. Extremes have ranged from −27.4 to 42.6 ° C (-17 to 109 °F)



Dust storms
Dust from the erosion of deserts in northern and northwestern China results in seasonal dust storms that plague the city; the Beijing Weather Modification Office sometimes artificially induces rainfall to fight such storms and mitigate their effects. In the first four months of 2006 alone, there were no fewer than eight such storms,In April 2002, one dust storm alone dumped nearly 50,000 tons of dust onto the city before moving on to Japan and Korea

** Economy **
Beijing's real estate and automobile sectors have continued to boom in recent years. In 2005, a total of 28,032,000 square metres (301,730,000 sq ft) of housing real estate was sold, for a total of 175.88 billion RMB. The total number of cars registered in Beijing in 2004 was 2,146,000, of which 1,540,000 were privately owned (a yearly increase of 18.7%).

environment problems
The development of Beijing continues at a rapid pace, and the vast expansion has created a multitude of problems for the city. Beijing is known for its smog as well as the frequent "power-saving" programmes instituted by the government. To reduce air pollution, a number of major industries have been ordered to reduce emissions or leave the city. Beijing Capital Steel, once one of the city's largest employers and its single biggest polluter, has been relocating most of its operations to Tangshan , in nearby Hebei Province. Residents and tourists alike frequently complain about the water quality and the cost of the basic services such as electricity and natural gas