Lightning-tropospheric ozone connections: EOF analysis of TCO and lightning data

J. H. Ryu; G. S. Jenkins

doi:10.1016/j.atmosenv.2005.05.047

Lightning-tropospheric ozone connections: EOF analysis of TCO and lightning data

J. H. Ryu, G. S. Jenkins

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26 Scopus citations

Abstract

An empirical orthogonal function (EOF) analysis is applied to two different data sets of tropospheric column ozone (TCO) and observed lightning flash rates over the tropical Atlantic for the period of 1996-2000. The first two dominant EOF modes of TCO values, explaining more than 65% of total variance are characterized by the seasonal cycle. The time series of EOF1 and EOF2 of TCO values are in phase with those of the EOF2 (16%) and EOF1 (63%) of the lightning, respectively. These relationships imply the influence of lightning on the tropical ozone maximum and the tropical ozone paradox. Moreover, the spatial distribution of the EOF modes and the horizontal wind field in the upper troposphere show that the highest lightning flash rates are located upstream of the region where high TCO values are found throughout the year.

Original language	English (US)
Pages (from-to)	5799-5805
Number of pages	7
Journal	Atmospheric Environment
Volume	39
Issue number	32
DOIs	https://doi.org/10.1016/j.atmosenv.2005.05.047
State	Published - Oct 2005

All Science Journal Classification (ASJC) codes

Environmental Science(all)
Atmospheric Science

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10.1016/j.atmosenv.2005.05.047

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@article{70623466132b414f9af7af5285fb997a,

title = "Lightning-tropospheric ozone connections: EOF analysis of TCO and lightning data",

abstract = "An empirical orthogonal function (EOF) analysis is applied to two different data sets of tropospheric column ozone (TCO) and observed lightning flash rates over the tropical Atlantic for the period of 1996-2000. The first two dominant EOF modes of TCO values, explaining more than 65% of total variance are characterized by the seasonal cycle. The time series of EOF1 and EOF2 of TCO values are in phase with those of the EOF2 (16%) and EOF1 (63%) of the lightning, respectively. These relationships imply the influence of lightning on the tropical ozone maximum and the tropical ozone paradox. Moreover, the spatial distribution of the EOF modes and the horizontal wind field in the upper troposphere show that the highest lightning flash rates are located upstream of the region where high TCO values are found throughout the year.",

author = "Ryu, {J. H.} and Jenkins, {G. S.}",

note = "Funding Information: This research was supported through NSF Grant ATM-0105206 and NASA Grant NAG5-7443. Lightning data provided by the NASA Lightning Imaging Sensor (LIS) science team and the LIS data center located at the Global Hydrology and Climate Center (GHCC), Huntsville, Alabama, USA.",

year = "2005",

month = oct,

doi = "10.1016/j.atmosenv.2005.05.047",

language = "English (US)",

volume = "39",

pages = "5799--5805",

journal = "Atmospheric Environment",

issn = "1352-2310",

publisher = "Elsevier Limited",

number = "32",

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TY - JOUR

T1 - Lightning-tropospheric ozone connections

T2 - EOF analysis of TCO and lightning data

AU - Ryu, J. H.

AU - Jenkins, G. S.

N1 - Funding Information: This research was supported through NSF Grant ATM-0105206 and NASA Grant NAG5-7443. Lightning data provided by the NASA Lightning Imaging Sensor (LIS) science team and the LIS data center located at the Global Hydrology and Climate Center (GHCC), Huntsville, Alabama, USA.

PY - 2005/10

Y1 - 2005/10

N2 - An empirical orthogonal function (EOF) analysis is applied to two different data sets of tropospheric column ozone (TCO) and observed lightning flash rates over the tropical Atlantic for the period of 1996-2000. The first two dominant EOF modes of TCO values, explaining more than 65% of total variance are characterized by the seasonal cycle. The time series of EOF1 and EOF2 of TCO values are in phase with those of the EOF2 (16%) and EOF1 (63%) of the lightning, respectively. These relationships imply the influence of lightning on the tropical ozone maximum and the tropical ozone paradox. Moreover, the spatial distribution of the EOF modes and the horizontal wind field in the upper troposphere show that the highest lightning flash rates are located upstream of the region where high TCO values are found throughout the year.

AB - An empirical orthogonal function (EOF) analysis is applied to two different data sets of tropospheric column ozone (TCO) and observed lightning flash rates over the tropical Atlantic for the period of 1996-2000. The first two dominant EOF modes of TCO values, explaining more than 65% of total variance are characterized by the seasonal cycle. The time series of EOF1 and EOF2 of TCO values are in phase with those of the EOF2 (16%) and EOF1 (63%) of the lightning, respectively. These relationships imply the influence of lightning on the tropical ozone maximum and the tropical ozone paradox. Moreover, the spatial distribution of the EOF modes and the horizontal wind field in the upper troposphere show that the highest lightning flash rates are located upstream of the region where high TCO values are found throughout the year.

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U2 - 10.1016/j.atmosenv.2005.05.047

DO - 10.1016/j.atmosenv.2005.05.047

M3 - Article

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SN - 1352-2310

VL - 39

SP - 5799

EP - 5805

JO - Atmospheric Environment

JF - Atmospheric Environment

IS - 32

ER -

Lightning-tropospheric ozone connections: EOF analysis of TCO and lightning data

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