The Arctic Boundary Layer Expedition (ABLE 3A): July–August 1988

On the Arctic Boundary Layer On the Arctic Boundary Layer

The boundary layer is the part of the atmosphere that is in direct contact with the ground via turbulent motion. At mid-latitudes the boundary layer is usually one or a few kilometers deep, while in the Arctic it is much more shallow, typically a few hundred meters or less. The reason is that here the absolute temperature increases in the lowest kilometer, making the boundary layer semi-permane...

Spatial Distribution of Methanesulphonic Acid in the Arctic Aerosol Collected during the Chinese Arctic Research Expedition

Methanesulphonic acid (MSA, mainly derived from marine biogenic emissions) has been frequently used to estimate the marine biogenic contribution. However, there are few reports on MSA over the Arctic Ocean, especially the central Arctic Ocean. Here, we analyzed MSA in aerosol samples collected over the ocean and seas during the Chinese Arctic Research Expedition (CHINARE 2012) using ion chromat...

Ozone in the boundary layer air over the Arctic Ocean: measurements during the TARA transpolar

A full year of measurements of surface ozone over the Arctic Ocean far removed from land is presented (81 N– 88 N latitude). The data were obtained during the drift of the French schooner TARA between September 2006 and January 2008, while frozen in the Arctic Ocean. The data confirm that long periods of virtually total absence of ozone occur in the spring (mid March to mid June) after Polar su...

Sir John Franklin's last arctic expedition: a medical disaster.

Summertime carbonaceous aerosols collected in the marine boundary layer of the Arctic Ocean

[1] The chemistry, morphology, and microscale to nanoscale structures of carbonaceous aerosols from the marine boundary layer of the Arctic Ocean were investigated by a variety of electron microscopy techniques, including scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and energydispersive X-ray spectroscopy (EDS). The relative levels of particles o...