Variations in the free chlorine content of the stratosphere (1991-1997): Anthropogenic, volcanic, and methane influences

L. Froidevaux; J. W. Waters; W. G. Read; P. S. Connell; D. E. Kinnison; J. M. Russell

doi:10.1029/1999JD901038

Variations in the free chlorine content of the stratosphere (1991-1997): Anthropogenic, volcanic, and methane influences

L. Froidevaux, J. W. Waters, W. G. Read, P. S. Connell, D. E. Kinnison, J. M. Russell

ACOM Modeling

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Abstract

Remote sensing of chlorine monoxide (CIO) by the Microwave Limb Sounder experiment aboard the Upper Atmosphere Research Satellite (UARS) has provided global measurements of variations in stratospheric free chlorine for 1991-1997. Linear trends were obtained from a multiple regression analysis of this data set at low latitudes and midlatitudes. CIO increases in die upper stratosphere (2 hPa) are significantly larger than expected from trends in chlorine source gases alone. Much of the upper stratospheric CIO variability can be explained by changes in CH₄, as measured by the UARS Halogen Occultation Experiment. Decreasing CIO in the lower stratosphere is consistent with a relaxation from a chemically perturbed state attributed to the 1991 Mt. Pinatubo eruption.

Original language	English
Pages (from-to)	4471-4481
Number of pages	11
Journal	Journal of Geophysical Research: Atmospheres
Volume	105
Issue number	D4
DOIs	https://doi.org/10.1029/1999JD901038
State	Published - 2000

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title = "Variations in the free chlorine content of the stratosphere (1991-1997): Anthropogenic, volcanic, and methane influences",

abstract = "Remote sensing of chlorine monoxide (CIO) by the Microwave Limb Sounder experiment aboard the Upper Atmosphere Research Satellite (UARS) has provided global measurements of variations in stratospheric free chlorine for 1991-1997. Linear trends were obtained from a multiple regression analysis of this data set at low latitudes and midlatitudes. CIO increases in die upper stratosphere (2 hPa) are significantly larger than expected from trends in chlorine source gases alone. Much of the upper stratospheric CIO variability can be explained by changes in CH4, as measured by the UARS Halogen Occultation Experiment. Decreasing CIO in the lower stratosphere is consistent with a relaxation from a chemically perturbed state attributed to the 1991 Mt. Pinatubo eruption.",

author = "L. Froidevaux and Waters, \{J. W.\} and Read, \{W. G.\} and Connell, \{P. S.\} and Kinnison, \{D. E.\} and Russell, \{J. M.\}",

year = "2000",

doi = "10.1029/1999JD901038",

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volume = "105",

pages = "4471--4481",

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TY - JOUR

T1 - Variations in the free chlorine content of the stratosphere (1991-1997)

T2 - Anthropogenic, volcanic, and methane influences

AU - Froidevaux, L.

AU - Waters, J. W.

AU - Read, W. G.

AU - Connell, P. S.

AU - Kinnison, D. E.

AU - Russell, J. M.

PY - 2000

Y1 - 2000

N2 - Remote sensing of chlorine monoxide (CIO) by the Microwave Limb Sounder experiment aboard the Upper Atmosphere Research Satellite (UARS) has provided global measurements of variations in stratospheric free chlorine for 1991-1997. Linear trends were obtained from a multiple regression analysis of this data set at low latitudes and midlatitudes. CIO increases in die upper stratosphere (2 hPa) are significantly larger than expected from trends in chlorine source gases alone. Much of the upper stratospheric CIO variability can be explained by changes in CH4, as measured by the UARS Halogen Occultation Experiment. Decreasing CIO in the lower stratosphere is consistent with a relaxation from a chemically perturbed state attributed to the 1991 Mt. Pinatubo eruption.

AB - Remote sensing of chlorine monoxide (CIO) by the Microwave Limb Sounder experiment aboard the Upper Atmosphere Research Satellite (UARS) has provided global measurements of variations in stratospheric free chlorine for 1991-1997. Linear trends were obtained from a multiple regression analysis of this data set at low latitudes and midlatitudes. CIO increases in die upper stratosphere (2 hPa) are significantly larger than expected from trends in chlorine source gases alone. Much of the upper stratospheric CIO variability can be explained by changes in CH4, as measured by the UARS Halogen Occultation Experiment. Decreasing CIO in the lower stratosphere is consistent with a relaxation from a chemically perturbed state attributed to the 1991 Mt. Pinatubo eruption.

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DO - 10.1029/1999JD901038

M3 - Article

AN - SCOPUS:0033788986

SN - 2169-897X

VL - 105

SP - 4471

EP - 4481

JO - Journal of Geophysical Research: Atmospheres

JF - Journal of Geophysical Research: Atmospheres

IS - D4

ER -

Variations in the free chlorine content of the stratosphere (1991-1997): Anthropogenic, volcanic, and methane influences

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