JNO₂ at high solar zenith angles in the lower stratosphere

Authors

R. S. Gao, National Oceanic and Atmospheric AdministrationFollow
L. A. Del Negro, Middlebury CollegeFollow
W. H. Swartz, Johns Hopkins University
R. J. Salawitch, Jet Propulsion Laboratory
S. A. Lloyd, Johns Hopkins University
M. H. Proffitt, National Oceanic and Atmospheric Administration
D. W. Fahey, National Oceanic and Atmospheric Administration
Stephen G. Donnelly Ph.D., National Center for Atmospheric ResearchFollow
J. A. Neuman, National Oceanic and Atmospheric Administration
R. M. Stimpfle, Harvard University
T. P. Bui, NASA Ames Research Center

Abstract

In situ measurements of NO, NO2, O3, HO2, C1O, pressure, and temperature have been made at high solar zenith angles (SZA, 70° - 93°) in the lower stratosphere. These measurements are used to derive the photolysis rate of NO2, JNO2, using a time-dependent method. The resultant JNO2 values and the results of a multiple-scattering actinic flux model show a linear relationship throughout the SZA range. The difference of the two sets of JNO2 values of about 11% suggests that the model scattering calculation is very accurate at high SZA conditions near sunrise and sunset.

Document Type

Article

Source Publication

Geophysical Research Letters

Version

Published version

DOI

10.1029/2000GL012615

Publication Date

6-15-2001

Volume

28

Issue

12

First Page

2405

Last Page

2408

Rights

© American Geophysical Union

Comments

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Recommended Citation

Gao, R. S., Negro, L. A. D., Swartz, W. H., Salawitch, R. J., Lloyd, S. A., Proffitt, M. H., Fahey, D. W., Donnelly, S. G., Neuman, J. A., Stimpfle, R. M., & Bui, T. P. (2001). JNO2 at high solar zenith angles in the lower stratosphere. Geophysical Research Letters, 28(12), 2405–2408. https://doi.org/10.1029/2000GL012615