Measurements of OH, H2SO4 and MSA at the South Pole during ISCAT

R. L. Mauldin; F. L. Eisele; D. J. Tanner; E. Kosciuch; R. Shetter; B. Lefer; S. R. Hall; J. B. Nowak; M. Buhr; G. Chen; P. Wang; D. Davis

doi:10.1029/2000GL012711

Measurements of OH, H₂SO₄ and MSA at the South Pole during ISCAT

R. L. Mauldin, F. L. Eisele, D. J. Tanner, E. Kosciuch, R. Shetter, B. Lefer, S. R. Hall, J. B. Nowak, M. Buhr, G. Chen, P. Wang, D. Davis

Experimental Science Section

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Abstract

The first measurements of OH, H₂SO₄, and MSA performed at the South Pole as part of the Investigation of Sulfur Chemistry in the Antarctic Troposphere (ISCAT) study are presented. OH concentrations were found to be quite elevated for such a dry environment, with average values of 2x10⁶ molecule cm^-3. Model simulations suggest that much of the observed OH is a result of unexpectedly high NO concentrations. Concentrations of H₂SO₄ and MSA were generally low with average values of 2.5×10⁵ and 1 × 10⁵ molecule cm^-3, respectively. Major variations in the concentration levels of the above species were found to have a high correlation with changes in the polar mixing layer as estimated from the measured temperature difference from 22 to 2m above the snow surface. Chemical details are discussed.

Original language	English
Pages (from-to)	3629-3632
Number of pages	4
Journal	Geophysical Research Letters
Volume	28
Issue number	19
DOIs	https://doi.org/10.1029/2000GL012711
State	Published - Oct 1 2001

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title = "Measurements of OH, H2SO4 and MSA at the South Pole during ISCAT",

abstract = "The first measurements of OH, H2SO4, and MSA performed at the South Pole as part of the Investigation of Sulfur Chemistry in the Antarctic Troposphere (ISCAT) study are presented. OH concentrations were found to be quite elevated for such a dry environment, with average values of 2x106 molecule cm-3. Model simulations suggest that much of the observed OH is a result of unexpectedly high NO concentrations. Concentrations of H2SO4 and MSA were generally low with average values of 2.5×105 and 1 × 105 molecule cm-3, respectively. Major variations in the concentration levels of the above species were found to have a high correlation with changes in the polar mixing layer as estimated from the measured temperature difference from 22 to 2m above the snow surface. Chemical details are discussed.",

author = "Mauldin, \{R. L.\} and Eisele, \{F. L.\} and Tanner, \{D. J.\} and E. Kosciuch and R. Shetter and B. Lefer and Hall, \{S. R.\} and Nowak, \{J. B.\} and M. Buhr and G. Chen and P. Wang and D. Davis",

year = "2001",

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doi = "10.1029/2000GL012711",

language = "English",

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journal = "Geophysical Research Letters",

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TY - JOUR

T1 - Measurements of OH, H2SO4 and MSA at the South Pole during ISCAT

AU - Mauldin, R. L.

AU - Eisele, F. L.

AU - Tanner, D. J.

AU - Kosciuch, E.

AU - Shetter, R.

AU - Lefer, B.

AU - Hall, S. R.

AU - Nowak, J. B.

AU - Buhr, M.

AU - Chen, G.

AU - Wang, P.

AU - Davis, D.

PY - 2001/10/1

Y1 - 2001/10/1

N2 - The first measurements of OH, H2SO4, and MSA performed at the South Pole as part of the Investigation of Sulfur Chemistry in the Antarctic Troposphere (ISCAT) study are presented. OH concentrations were found to be quite elevated for such a dry environment, with average values of 2x106 molecule cm-3. Model simulations suggest that much of the observed OH is a result of unexpectedly high NO concentrations. Concentrations of H2SO4 and MSA were generally low with average values of 2.5×105 and 1 × 105 molecule cm-3, respectively. Major variations in the concentration levels of the above species were found to have a high correlation with changes in the polar mixing layer as estimated from the measured temperature difference from 22 to 2m above the snow surface. Chemical details are discussed.

AB - The first measurements of OH, H2SO4, and MSA performed at the South Pole as part of the Investigation of Sulfur Chemistry in the Antarctic Troposphere (ISCAT) study are presented. OH concentrations were found to be quite elevated for such a dry environment, with average values of 2x106 molecule cm-3. Model simulations suggest that much of the observed OH is a result of unexpectedly high NO concentrations. Concentrations of H2SO4 and MSA were generally low with average values of 2.5×105 and 1 × 105 molecule cm-3, respectively. Major variations in the concentration levels of the above species were found to have a high correlation with changes in the polar mixing layer as estimated from the measured temperature difference from 22 to 2m above the snow surface. Chemical details are discussed.

UR - https://www.scopus.com/pages/publications/17944371261

U2 - 10.1029/2000GL012711

DO - 10.1029/2000GL012711

M3 - Article

AN - SCOPUS:17944371261

SN - 0094-8276

VL - 28

SP - 3629

EP - 3632

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 19

ER -

Measurements of OH, H₂SO₄ and MSA at the South Pole during ISCAT

Abstract

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