Summertime Transport Pathways From Different Northern Hemisphere Regions Into the Arctic

Transport into the Arctic LMS

Quantifying transport into the Arctic lowermost stratosphere A. Werner, C. M. Volk, E. V. Ivanova, T. Wetter, C. Schiller, H. Schlager, and P. Konopka Institute for Atmospheric and Environmental Sciences, University of Frankfurt, Germany Institute of Chemistry and Dynamics of the Geosphere, Research Center Jülich, Germany Deutsches Zentrum für Luft und Raumfahrt, Institute of Atmospheric Physic...

On the Summertime Strengthening of the Northern Hemisphere Pacific Sea-Level Pressure Anticyclone

This study revisits the question posed by Hoskins on why the Northern Hemisphere Pacific sea level pressure (SLP) anticyclone is strongest and maximally extended in summer when the Hadley cell descent in the northern subtropics is the weakest. The paradoxical evolution is revisited because anticyclone buildup to the majestic summer structure is gradual, spread evenly over the preceding 4–6 mont...

Increasing atmospheric antimony contamination in the northern hemisphere: snow and ice evidence from Devon Island, Arctic Canada.

Adopting recently developed clean laboratory techniques, antimony (Sb) and scandium (Sc) deposition were measured in a 63.72 m-long ice core (1842-1996) and a 5 m deep snow pit (1994-2004) collected on Devon Island, Canadian High Arctic. Antimony concentrations ranged from 0.07 to 108 pg g(-1) with a median of 0.98 pg g(-1)(N= 510). Scandium, used as a conservative reference element, revealed t...

Summertime ozone at northern mid-latitudes

A climatology based on reanalysis of baroclinic developmental regions in the extratropical northern hemisphere.

Regions of the occurrence of different phenomena related to the development of baroclinic disturbances are reviewed for the Northern Hemisphere extratropics, using National Centers for Environmental Prediction/National Center for Atmospheric Research reanalysis data. The occurrence of height lows appears to be related to the orography near the earth's surface and with surface- and upper-air cyc...