Research Article

Dominant Modes of Tropospheric Ozone Variation over East Asia from GOME Observations

Figure 1

Monthly mean tropospheric column ozone (TCO) (unit: Dobson unit (DU)) from GOME (Global Ozone Monitoring Experiment) measurements between March 1996 and June 2003. GOME data are unavailable over the white area due to the lack of downlinking of GOME data to ground stations. The dark thick contours are coastline and the edge of Tibetan Plateau.
(a) Jan.
(b) Apr.
(c) Jul.
(d) Oct.