Spatio-temporal variation analysis of CH4 in North China based on Sentinel-5P
The spatio-temporal distribution characteristics of CH4 column concentration in North China during 2019-2022 and its influencing factors were analyzed based on CH4 column concentration data inverted by Sentinel-5P remote sensing satellite.The results showed that the spatial distribution of CH4 column concentration in North China was low in the northwest and high in the southeast,the Beijing-Tianjin-Hebei and central-eastern Shanxi regions had obvious high-concentration contiguous characteristics.Over time,the CH4 column concentration increased year by year,and showed obvious seasonal characteristics of high in fall and low in spring,transition in summer and winter.Regression analysis showed that CH4 column concentration in North China was affected by air temperature,rainfall,vegetation index,road network density,wind speed and topography,and air temperature,rainfall,vegetation index had the greatest impact.
万方数据
