Remote Sensing of Atmospheric CO and O₃ Anomalies before and after Two Yutian M_S7.3 Earthquakes

Figure 10

Backward trajectories in the 100 hPa pressure layer at the gas anomaly center of the Yutian earthquake in 2008. Red five-pointed star indicates the center point of abnormal gas concentration.

(a) Five-day backward trajectories on the day of the earthquake (March 21)

(b) Five-day backward trajectories of the day of maximum gas concentration (February 27)