Research Article

Remote Sensing of Atmospheric CO and O3 Anomalies before and after Two Yutian MS7.3 Earthquakes

Figure 11

Backward trajectories in the 100 hPa pressure layer at the gas anomaly center of the Yutian earthquake in 2014. Red five-pointed star indicates the center point of abnormal gas concentration.
(a) Five-day backward trajectories on the day of the earthquake (February 12)
(b) Five-day backward trajectories of the day of maximum gas concentration (March 10)