![Spatial variations of surface snow chemistry during two austral summers in western Dronning Maud Land, Antarctica [An article from: Atmospheric Environment]](https://www.ebooknetworking.net/books/B00/0RR/bigB000RR4FS4.jpg)
Spatial variations of surface snow chemistry during two austral summers in western Dronning Maud Land, Antarctica [An article from: Atmospheric Environment]
Description
This digital document is a journal article from Atmospheric Environment, published by Elsevier in 2005. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
The glaciochemical properties of snow were measured in western Dronning Maud Land during the austral summers of 1999/2000 and 2000/2001. The surface snow samples were taken along a 350-km transect from the seaward edge of the ice shelf to the Antarctic plateau and analysed for the presence of the major inorganic components SO"4^2^-, NO"3^-, Cl^-, NH"4^+, Na^+, K^+, Ca^2^+, Mg^2^+ and MSA. The sea-salt components and MSA decreased exponentially with increasing distance from the coast by about 64%/100km. Non-sea-salt SO"4^2^- decreased also exponentially with the distance from the ice edge by 48%/100km. No substantial trend was observed for NO"3^-. The pH values calculated from the ionic balance were similar to those measured in the field, although the calculated pH values were an average of 0.6 lower. The fractions of the dry deposition of the ionic concentrations were estimated and the results reveal that they are low near the Finnish research station Aboa, usually less than 10% of the total deposition.
Description:
The glaciochemical properties of snow were measured in western Dronning Maud Land during the austral summers of 1999/2000 and 2000/2001. The surface snow samples were taken along a 350-km transect from the seaward edge of the ice shelf to the Antarctic plateau and analysed for the presence of the major inorganic components SO"4^2^-, NO"3^-, Cl^-, NH"4^+, Na^+, K^+, Ca^2^+, Mg^2^+ and MSA. The sea-salt components and MSA decreased exponentially with increasing distance from the coast by about 64%/100km. Non-sea-salt SO"4^2^- decreased also exponentially with the distance from the ice edge by 48%/100km. No substantial trend was observed for NO"3^-. The pH values calculated from the ionic balance were similar to those measured in the field, although the calculated pH values were an average of 0.6 lower. The fractions of the dry deposition of the ionic concentrations were estimated and the results reveal that they are low near the Finnish research station Aboa, usually less than 10% of the total deposition.
