Denitrification in the Arctic winter 2004/2005: Observations from ACE-FTS

J. J. Jin; K. Semeniuk; G. L. Manney; A. I. Jonsson; S. R. Beagley; J. C. McConnell; C. P. Rinsland; C. D. Boone; K. A. Walker; P. F. Bernath

doi:10.1029/2006GL027687

Denitrification in the Arctic winter 2004/2005: Observations from ACE-FTS

J. J. Jin, K. Semeniuk, G. L. Manney, A. I. Jonsson, S. R. Beagley, J. C. McConnell, C. P. Rinsland, C. D. Boone, K. A. Walker, P. F. Bernath

Chemistry

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Abstract

Arctic denitrification in the winter 2004/2005 is analyzed using measurements from the satellite instrument ACE-FTS. Two methods based on changes in the correlations of odd nitrogen (NOy) versus methane and versus an artificial long-lived tracer are employed. The observations show that significant denitrification occurred in the region 15 km - 20 km and that it was spatially inhomogeneous within the polar vortex. Before the vortex breakup in mid-March 2005 a maximum denitrification of 8 +/- 0.8 ppbv, accounting for a relative reduction of over 50%, was observed at similar to 450 K ( similar to 17 km) using both methods. When averaged over the polar vortex for the first half of March, the denitrification at this level was about 4.4 ppbv and 5.0 ppbv from the artificial tracer method and the correlation method, respectively.

Original language	English
Pages (from-to)	-
Number of pages	5
Journal	Geophysical Research Letters
Volume	33
Issue number	19
DOIs	https://doi.org/10.1029/2006GL027687
Publication status	Published - 12 Oct 2006

Keywords

POLAR VORTEX AIR
OZONE LOSS
STRATOSPHERE
PARTICLES

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10.1029/2006GL027687

Cite this

@article{bee570f34cae4230ae7158312de73191,

title = "Denitrification in the Arctic winter 2004/2005: Observations from ACE-FTS",

abstract = "Arctic denitrification in the winter 2004/2005 is analyzed using measurements from the satellite instrument ACE-FTS. Two methods based on changes in the correlations of odd nitrogen (NOy) versus methane and versus an artificial long-lived tracer are employed. The observations show that significant denitrification occurred in the region 15 km - 20 km and that it was spatially inhomogeneous within the polar vortex. Before the vortex breakup in mid-March 2005 a maximum denitrification of 8 +/- 0.8 ppbv, accounting for a relative reduction of over 50%, was observed at similar to 450 K ( similar to 17 km) using both methods. When averaged over the polar vortex for the first half of March, the denitrification at this level was about 4.4 ppbv and 5.0 ppbv from the artificial tracer method and the correlation method, respectively.",

keywords = "POLAR VORTEX AIR, OZONE LOSS, STRATOSPHERE, PARTICLES",

author = "Jin, {J. J.} and K. Semeniuk and Manney, {G. L.} and Jonsson, {A. I.} and Beagley, {S. R.} and McConnell, {J. C.} and Rinsland, {C. P.} and Boone, {C. D.} and Walker, {K. A.} and Bernath, {P. F.}",

year = "2006",

month = oct,

day = "12",

doi = "10.1029/2006GL027687",

language = "English",

volume = "33",

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journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "American Geophysical Union",

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T1 - Denitrification in the Arctic winter 2004/2005: Observations from ACE-FTS

AU - Jin, J. J.

AU - Semeniuk, K.

AU - Manney, G. L.

AU - Jonsson, A. I.

AU - Beagley, S. R.

AU - McConnell, J. C.

AU - Rinsland, C. P.

AU - Boone, C. D.

AU - Walker, K. A.

AU - Bernath, P. F.

PY - 2006/10/12

Y1 - 2006/10/12

N2 - Arctic denitrification in the winter 2004/2005 is analyzed using measurements from the satellite instrument ACE-FTS. Two methods based on changes in the correlations of odd nitrogen (NOy) versus methane and versus an artificial long-lived tracer are employed. The observations show that significant denitrification occurred in the region 15 km - 20 km and that it was spatially inhomogeneous within the polar vortex. Before the vortex breakup in mid-March 2005 a maximum denitrification of 8 +/- 0.8 ppbv, accounting for a relative reduction of over 50%, was observed at similar to 450 K ( similar to 17 km) using both methods. When averaged over the polar vortex for the first half of March, the denitrification at this level was about 4.4 ppbv and 5.0 ppbv from the artificial tracer method and the correlation method, respectively.

AB - Arctic denitrification in the winter 2004/2005 is analyzed using measurements from the satellite instrument ACE-FTS. Two methods based on changes in the correlations of odd nitrogen (NOy) versus methane and versus an artificial long-lived tracer are employed. The observations show that significant denitrification occurred in the region 15 km - 20 km and that it was spatially inhomogeneous within the polar vortex. Before the vortex breakup in mid-March 2005 a maximum denitrification of 8 +/- 0.8 ppbv, accounting for a relative reduction of over 50%, was observed at similar to 450 K ( similar to 17 km) using both methods. When averaged over the polar vortex for the first half of March, the denitrification at this level was about 4.4 ppbv and 5.0 ppbv from the artificial tracer method and the correlation method, respectively.

KW - POLAR VORTEX AIR

KW - OZONE LOSS

KW - STRATOSPHERE

KW - PARTICLES

U2 - 10.1029/2006GL027687

DO - 10.1029/2006GL027687

M3 - Article

SN - 0094-8276

VL - 33

SP - -

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 19

ER -