Abstract:SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) retrievals of tropospheric CO2 concentrations were validated using ground-based measurements collected at the Waliguan (WLG) site (representing background conditions) and at the Panyu meteorological site (PYQXJ) in Guangzhou province from January 2003 to December 2009. Residuals and correlation coefficients from a linear regression of SCIAMACHY retrievals as a function of ground measurements were 1.33×10-6 and 0.72, respectively, at the WLG site 1.29×10-6 and 0.69, respectively, at the PYQXJ site. In Guangdong region, the satellite-retrieved annual mean CO2 concentration (384.84×10-6) and annual growth rate (1.53×10-6/a) were greater than those measured from the ground. The maximum and minimum CO2 concentrations across Guangdong province were seen in spring and summer, and all the CO2 concentrations in eastern, western, northern Guangdong and into the Pearl River Delta region (PRD) were higher in spring and winter, but lower in summer and autumn. The annual mean growth rate of CO2 was highest in western Guangdong (1.82×10-6/a), moderate over the PRD and in eastern Guangdong (1.65×10-6/a and 1.64×10-6/a, respectively), and lowest in northern Guangdong (1.61×10-6/a).
麦博儒, 邓雪娇, 安兴琴, 刘显通, 李菲, 刘霞. 基于卫星遥感的广东地区对流层二氧化碳时空变化特征[J]. 中国环境科学, 2014, 34(5): 1098-1106.
MAI Bo-Ru, DENG Xue-Jiao, AN Xing-Qin, LIU Xian-Tong, LI Fei, LIU Xia. Spatial and temporal distributions of tropospheric CO2 concentrations over Guangdong province based on satellite observations. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(5): 1098-1106.