TY  - STD
AU  - Kerbrat Michael, Legrand Michel
PY  - 2012//
TI  - Nitrous acid at Concordia (inland site) and Dumont d'Urville (coastal site), East Antarctica
BT  - Journal of Geophysical Research: Atmospheres
SP  - D08303-
VL  - 117
IS  - D8
KW  - East Antarctica
KW  - LOPAP
KW  - nitrous acid
KW  - 0322 Constituent sources and sinks
KW  - 0365 Troposphere: composition and chemistry
KW  - 0368 Troposphere: constituent transport and chemistry
KW  -
N2  - During the austral summer 2010/2011, nitrous acid (HONO) was investigated for the first time at Concordia (75°06S, 123°33E) and Dumont D'Urville (66°40S, 140°01E), two sites located in East Antarctica. Hereby, for the first time in Antarctica, HONO was measured by deploying a long path absorption photometer (LOPAP). At Concordia, HONO mixing ratios at 1 m above the snow surface ranged between 5 and 60 pptv from end of December 2010 to mid January 2011. Lowest levels were observed under cloudy conditions. Levels exhibit a diurnal cycle with a maximum in the morning (around 06:00) and in the evening (around 21:00). At Dumont d'Urville, background mixing ratios remained close to 2 pptv in February 2011. No clear diurnal cycles were detected at that site but several events of air masses export from inland Antarctica were encountered with enhanced HONO levels (10 pptv) at night. These first HONO data gained in East Antarctica are discussed in terms of sources and sinks along with synoptic weather conditions.
SN  - 2156-2202
L1  - https://intranet.ipev.fr/proposals/uploads/files/414/2013/kerbrat_et_al__JGR_2012__HONO_DDU_DC.pdf
UR  - http://dx.doi.org/10.1029/2011JD017149
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=3817), last updated on Tue, 30 Nov 1999 00:00:00 +0100
ID  - KerbratMichael2012
ER  -