Meteorologists rebuke 'China role' in snowy U.S. weather   

氣象專家駁美媒報道：美低溫天氣與中國空氣污染無直接關系

The Lincoln Memorial is seen after snowfall in Washington D.C.,the United States, on March 6, 2015. (Xinhua/Yin Bogu)

(ECNS) - Experts at the National Climate Centre and the Chinese Academy of Meteorological Sciences say blaming air pollution in China for America's cold snowy winter is unscientific fear-mongering.

Some physicists at NASA's Jet Propulsion Laboratory have said that China's air pollution might be a contributing factor to this year's "snowpocalypse" in Boston and bitter cold snaps in New York and Washington, according to U.S. media reports.

However, analysis by experts from the China Meteorological Administration shows no direct relationship between Chinese air pollution and America's snowy weather. They attribute it mainly to terrain, the lake-effect, and the country's position in a stable low pressure zone.

Air pollution and emissions over Southeast Asia may have some impact on parts of the US, but this is limited, according to a study in the 2010 Intercontinental Transfer Evaluation Report by the Task Force on Hemispheric Transport of Air Pollution (TFHTAP).

That report says the annual average ozone concentrations across much of the US are 40ppbv, and the effect of ozone concentration and precursor gas emissions from Southeast Asia are only 0.3-2.05ppbv.

Only 1.3 percent of East Asia's aerosols can be transmitted to North America, a figure determined by the circulation and life cycle of the aerosols, which suggests there is no direct relationship between China's air pollution and the winter weather in the U.S., meteorologists said.