High variability of atmospheric mercury in the summertime boundary layer through the central Arctic Ocean.

As shown in Figure 2a and 2c , most of CO concentrations were below 150 parts per billion by volume (ppbv) and displayed an increasing trend from July to September.

also in 63,971 other papers

This was different from the land based observation around the Arctic Ocean, where a decreasing trend from July to September was reported 15 .

also in 47,180 other papers