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Shouldn’T Snowpacks Be Sources Of Monocarboxylic Acids?, Jack E. Dibb, Matthew Arsenault
Shouldn’T Snowpacks Be Sources Of Monocarboxylic Acids?, Jack E. Dibb, Matthew Arsenault
Earth Sciences
We report the first measurements of the mixing ratios of acetic (CH3COOH) and formic (HCOOH) acids in the air filling the pore spaces of the snowpacks (firn air) at Summit, Greenland and South Pole. Both monocarboxylic acids were present at levels well above 1 ppbv throughout the upper 35 cm of the snowpack at Summit. Maximum mixing ratios in Summit firn air reached nearly 8 ppbv CH3COOH and 6 ppbv HCOOH. At South Pole the mixing ratios of these acids in the top 35 cm of firn air were also generally >1 ppbv, though their maximums …