查看文章

A rapid increase of NO₂ columns over China has been observed by satellite instruments in recent years. We present a 10‐a regional trend of NO_x emissions in China from 1995 to 2004 using a bottom‐up methodology and compare the emission trends with the NO₂ column trends observed from GOME and SCIAMACHY, the two spaceborne instruments. We use a dynamic methodology to reflect the dramatic change in China's NO_x emissions caused by energy growth and technology renewal. We use a scenario analysis approach to identify the possible sources of uncertainties in the current bottom‐up inventory, in comparison with the satellite observation data. Our best estimates for China's NO_x emissions are 10.9 Tg in 1995 and 18.6 Tg in 2004, increasing by 70% during the period considered. NO_x emissions and satellite‐based NO₂ columns show broad agreement in temporal evolution and spatial distribution …