Corrections
GEOPHYSICS
Correction for ‘‘Large and unexpected enrichment in strato-
spheric
16
O
13
C
18
O and its meridional variation,’’ by Laurence Y.
Yeung, Hagit P. Affek, Katherine J. Hoag, Weifu Guo, Aaron A.
Wiegel, Elliot L. Atlas, Sue M. Schauffler, Mitchio Okumura,
Kristie A. Boering, and John M. Eiler, which appeared in issue
28, July 14, 2009, of
Proc Natl Acad Sci USA
(106:11496–11501;
first published June 29, 2009; 10.1073/pnas.0902930106).
The authors note that the department affiliations for authors
Katherine J. Hoag and Aaron A. Wiegel at the University of
California, Berkeley, were inadvertently switched. Instead of the
Department of Chemistry, the affiliation for Katherine J. Hoag
should have appeared as the Department of Earth and Planetary
Science, University of California, Berkeley, CA 94720. Instead of
the Department of Earth and Planetary Science, the affiliation
for Aaron A. Wiegel should have appeared as the Department
of Chemistry, University of California, Berkeley, CA 94720. The
corrected author and affiliation lines appear below. In addition,
the authors note that the program Kintecus (48) was used to
model the laboratory continuous irradiation experiments de-
scribed in the ‘‘
Field and Laboratory Results
’’ section, but the
related reference was not cited. The reference appears below.
Finally, the authors note that the legend for Fig. 2
B
and
C
appeared incorrectly in part. In line 5, the words “
lines of
47
vs.
18
O(
B
) and
47
vs.
17
O(
C
)
” should instead have appeared as
“
lines of
47
vs.
17
O(
B
) and
47
vs.
18
O(
C
)
”. Due to a
printer’s error, in the same legend, the reaction in line 7,
‘‘
O(
1
D)
CO
2
,’’ should instead have appeared as ‘‘
O(
1
D)
CO
2
.’’
The figure and its corrected legend appear below.
Laurence Y. Yeung
a
, Hagit P. Affek
b
, Katherine J. Hoag
c
,
Weifu Guo
d
, Aaron A. Wiegel
e
, Elliot L. Atlas
f
, Sue M.
Schauffler
g
, Mitchio Okumura
a
, Kristie A. Boering
c,e
,
and John M. Eiler
d
Divisions of
a
Chemistry and Chemical Engineering and
d
Geological and
Planetary Sciences, California Institute of Technology, Pasadena, CA 91125;
b
Department of Geology and Geophysics, Yale University, New Haven, CT
06511; Departments of
c
Earth and Planetary Science and
e
Chemistry,
University of California, Berkeley, CA 94720;
f
Division of Marine and
Atmospheric Chemistry, University of Miami, Miami, FL 33149; and
g
National Center for Atmospheric Research, Boulder, CO 88307
48. Ianni JC (2003) A comparison of the Bader–Deuflhard and the Cash–Karp Runge–Kutta
integrators for the GRI-MECH 3.0 model based on the chemical kinetics code Kintecus.
Computational Fluid and Solid Mechanics 2003, ed Bathe KJ (Elsevier), pp 1368 –1372.
www.pnas.org/cgi/doi/10.1073/pnas.0911372106
Fig. 2.
Correlations between
47
and stratospheric tracers. (
A
), best-fit lines
are shown for midlatitude (solid line) and high-latitude (dashed line)
47
vs.
N
2
O mixing ratio. Correlations between
47
and other tracers with tropo-
spheric sources and stratospheric sinks are similar (see
SI
). (
B
and
C
) Best-fit
lines of
47
vs.
17
O(
B
) and
47
vs.
18
O(
C
) in midlatitude air, which are used
to estimate the integrated effective isotopic composition of stratospheric
O(
1
D) (see
O(
1
D)
CO
2
Explains Midlatitude but Not Polar Vortex
16
O
13
C
18
O
Variations
and
Materials and Methods
). Error bars show 2
standard errors.
www.pnas.org
PNAS
November 10, 2009
vol. 106
no. 45
19203–19204
CORRECTIONS