Observations of HONO by laser-induced fluorescence at the South Pole during ANTCI 2003

Details Observations of HONO by laser-induced fluorescence at the South Pole during ANTCI 2003 Observations of HONO by laser-induced fluorescence at the South Pole during ANTCI 2003

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3309810l&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 9, CiteID L09810

Physics

Geophysics

13

History Of Geophysics: Atmospheric Sciences

Scientific paper

Observations of nitrous acid (HONO) by laser-induced fluorescence (LIF) at the South Pole taken during the Antarctic Troposphere Chemistry Investigation (ANTCI), which took place over the time period of Nov. 15, 2003 to Jan. 4, 2004, are presented here. The median observed mixing ratio of HONO 10 m above the snow was 5.8 pptv (mean value 6.3 pptv) with a maximum of 18.2 pptv on Nov 30th, Dec 1st, 3rd, 15th, 17th, 21st, 22nd, 25th, 27th and 28th. The measurement uncertainty is +/-35%. The LIF HONO observations are compared to concurrent HONO observations performed by mist chamber/ion chromatography (MC/IC). The HONO levels reported by MC/IC are about 7.2 +/- 2.3 times higher than those reported by LIF.

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