Measurements of ice water content in tropopause region Arctic cirrus during the SAGE III Ozone Loss and Validation Experiment (SOLVE)

A. Gannet Hallar; Linnea M. Avallone; Robert L. Herman; Bruce E. Anderson; Andrew J. Heymsfield

doi:10.1029/2003JD004348

Measurements of ice water content in tropopause region Arctic cirrus during the SAGE III Ozone Loss and Validation Experiment (SOLVE)

A. Gannet Hallar, Linnea M. Avallone, Robert L. Herman, Bruce E. Anderson, Andrew J. Heymsfield

Dynamical and Physical Meteorology

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

A new instrument, the closed-path laser hygrometer (CLH), was flown on the NASA DC-8 aircraft during the Stratospheric Aerosol and Gas Experiment (SAGE) III Ozone Loss and Validation Experiment (SOLVE) campaign in 1999-2000 to measure condensed-phase water. The ice water content (IWC of Arctic cirrus was determined from in situ measurements of condensed- and gas-phase water. The IWC values obtained from the CLH observations are compared to those determined by integrating particle size distributions measured by a Forward Scattering Spectrometer Probe (FSSP) also flown on the DC-8. The considerably greater IWC seen by the CLH implies the presence of particles with diameters greater than the FSSP's upper limit of 20 μm. The evidence for and implications of the presence of large ice crystals in Arctic cirrus is discussed.

Original language	English
Pages (from-to)	D17203 1-9
Journal	Journal of Geophysical Research
Volume	109
Issue number	17
DOIs	https://doi.org/10.1029/2003JD004348
State	Published - Sep 16 2004

Keywords

Cirrus
Heterogeneous chemistry
Ice water content

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10.1029/2003JD004348

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title = "Measurements of ice water content in tropopause region Arctic cirrus during the SAGE III Ozone Loss and Validation Experiment (SOLVE)",

abstract = "A new instrument, the closed-path laser hygrometer (CLH), was flown on the NASA DC-8 aircraft during the Stratospheric Aerosol and Gas Experiment (SAGE) III Ozone Loss and Validation Experiment (SOLVE) campaign in 1999-2000 to measure condensed-phase water. The ice water content (IWC of Arctic cirrus was determined from in situ measurements of condensed- and gas-phase water. The IWC values obtained from the CLH observations are compared to those determined by integrating particle size distributions measured by a Forward Scattering Spectrometer Probe (FSSP) also flown on the DC-8. The considerably greater IWC seen by the CLH implies the presence of particles with diameters greater than the FSSP's upper limit of 20 μm. The evidence for and implications of the presence of large ice crystals in Arctic cirrus is discussed.",

keywords = "Cirrus, Heterogeneous chemistry, Ice water content",

author = "Hallar, \{A. Gannet\} and Avallone, \{Linnea M.\} and Herman, \{Robert L.\} and Anderson, \{Bruce E.\} and Heymsfield, \{Andrew J.\}",

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doi = "10.1029/2003JD004348",

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T1 - Measurements of ice water content in tropopause region Arctic cirrus during the SAGE III Ozone Loss and Validation Experiment (SOLVE)

AU - Hallar, A. Gannet

AU - Avallone, Linnea M.

AU - Herman, Robert L.

AU - Anderson, Bruce E.

AU - Heymsfield, Andrew J.

PY - 2004/9/16

Y1 - 2004/9/16

N2 - A new instrument, the closed-path laser hygrometer (CLH), was flown on the NASA DC-8 aircraft during the Stratospheric Aerosol and Gas Experiment (SAGE) III Ozone Loss and Validation Experiment (SOLVE) campaign in 1999-2000 to measure condensed-phase water. The ice water content (IWC of Arctic cirrus was determined from in situ measurements of condensed- and gas-phase water. The IWC values obtained from the CLH observations are compared to those determined by integrating particle size distributions measured by a Forward Scattering Spectrometer Probe (FSSP) also flown on the DC-8. The considerably greater IWC seen by the CLH implies the presence of particles with diameters greater than the FSSP's upper limit of 20 μm. The evidence for and implications of the presence of large ice crystals in Arctic cirrus is discussed.

AB - A new instrument, the closed-path laser hygrometer (CLH), was flown on the NASA DC-8 aircraft during the Stratospheric Aerosol and Gas Experiment (SAGE) III Ozone Loss and Validation Experiment (SOLVE) campaign in 1999-2000 to measure condensed-phase water. The ice water content (IWC of Arctic cirrus was determined from in situ measurements of condensed- and gas-phase water. The IWC values obtained from the CLH observations are compared to those determined by integrating particle size distributions measured by a Forward Scattering Spectrometer Probe (FSSP) also flown on the DC-8. The considerably greater IWC seen by the CLH implies the presence of particles with diameters greater than the FSSP's upper limit of 20 μm. The evidence for and implications of the presence of large ice crystals in Arctic cirrus is discussed.

KW - Cirrus

KW - Heterogeneous chemistry

KW - Ice water content

UR - https://www.scopus.com/pages/publications/9144274404

U2 - 10.1029/2003JD004348

DO - 10.1029/2003JD004348

M3 - Article

AN - SCOPUS:9144274404

SN - 0148-0227

VL - 109

SP - D17203 1-9

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

IS - 17

ER -

Measurements of ice water content in tropopause region Arctic cirrus during the SAGE III Ozone Loss and Validation Experiment (SOLVE)

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Keywords

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