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OH column abundance over Table Mountain Facility, California: AM-PM diurnal asymmetry

Li, King-Fai and Cageao, Richard P. and Karpilovsky, Elliott M. and Mills, Franklin P. and Yung, Yuk L. and Margolis, Jack S. and Sander, Stanley P. (2005) OH column abundance over Table Mountain Facility, California: AM-PM diurnal asymmetry. Geophysical Research Letters, 32 (13). Art. No. L13813. ISSN 0094-8276. doi:10.1029/2005GL022521. https://resolver.caltech.edu/CaltechAUTHORS:20140821-120128252

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Abstract

Observations of the OH column abundance have been made by the Fourier Transform Ultraviolet Spectrometer at the JPL Table Mountain Facility (TMF) near Los Angeles since July 1997. In the January 1998–December 2003 data set we used five OH lines to derive the OH column abundance in the atmosphere. This data set was used to quantify the OH morning/afternoon asymmetry (AMPMDA). An analysis of summer and winter data showed that the daily OH maximum occurred 26–36 minutes after solar transit. This phase lag appears to be the primary reason why OH in the afternoon is larger than at corresponding solar zenith angles in the morning throughout the year. A simple heuristic model suggests that the asymmetry is a direct consequence of the finite lifetime of OH. Comparison of the TMF data with earlier results from Fritz Peak Observatory, Colorado, by Burnett et al. reveals significant differences in the behavior of the AMPMDA between the two sites.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/2005GL022521DOIArticle
http://onlinelibrary.wiley.com/doi/10.1029/2005GL022521/abstractPublisherArticle
http://onlinelibrary.wiley.com/doi/10.1029/2005GL022521/suppinfoPublisherSupporting Information
ORCID:
AuthorORCID
Li, King-Fai0000-0003-0150-2910
Yung, Yuk L.0000-0002-4263-2562
Sander, Stanley P.0000-0003-1424-3620
Additional Information:© 2005 The American Geophysical Union. Received 23 January 2005; Revised 13 May 2005; Accepted 23 May 2005; Published 8 July 2005. This research was carried out by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. KFL and EMK acknowledge support from the Caltech Summer Undergraduate Research Fellowship program. This work was supported by the NASA Upper Atmosphere Research Program (JPL), by NASA Grant NAG1-02081 (California Institute of Technology), and by the Australian Research Council (ANU).
Funders:
Funding AgencyGrant Number
Caltech Summer Undergraduate Research Fellowship (SURF)UNSPECIFIED
NASANAG1-02081
Australian Research CouncilUNSPECIFIED
Issue or Number:13
DOI:10.1029/2005GL022521
Record Number:CaltechAUTHORS:20140821-120128252
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140821-120128252
Official Citation:Li, K.-F., Cageao, R. P., Karpilovsky, E. M., Mills, F. P., Yung, Y. L., Margolis, J. S., & Sander, S. P. (2005). OH column abundance over Table Mountain Facility, California: AM-PM diurnal asymmetry. Geophysical Research Letters, 32(13), L13813. doi: 10.1029/2005gl022521
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48776
Collection:CaltechAUTHORS
Deposited By: Joanne McCole
Deposited On:21 Aug 2014 19:56
Last Modified:10 Nov 2021 18:35

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