| The launch 
				follows the United States joining China in formally ratifying 
				the Paris agreement to curb climate-warming emissions. It also 
				comes as large sections of northern China have been shrouded in 
				near-record levels of air pollution for most of the past week, 
				disrupting flights, closing factories and schools, and forcing 
				authorities to issue red alerts.
 China launched the satellite via a Long March-2D rocket from 
				Jiuquan Satellite Launch Centre in the northwestern Gobi Desert, 
				Xinhua said.
 
 The 620 kg (1,370 lbs) satellite TanSat was sent into a sun 
				synchronous orbit about 700 km (435 miles) above the earth and 
				will monitor the concentration, distribution and flow of carbon 
				dioxide in the atmosphere, said Yin Zengshan, chief designer of 
				TanSat at the Chinese Academy of Sciences micro-satellite 
				research institute.
 
 The launch comes after an international study showed that world 
				greenhouse gas emissions stayed flat for the third year in a row 
				in 2016, thanks to falls in China.
 
 The satellite will provide China's policymakers with independent 
				data for three years, the news agency said.
 
 TanSat will take readings of global carbon dioxide every 16 
				days, accurate to at least 4 parts per million.
 
 The rocket carrying TanSat also carried a high-resolution 
				micro-nano satellite and two spectrum micro-nano satellites for 
				agricultural and forestry monitoring, the agency added.
 
 China is the third country after Japan and the United States to 
				monitor greenhouse gases with its own satellite, the agency 
				said.
 
 (Reporting by Engen Tham)
 
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