The first author is supported by NSF Grant BCS-1060788, and the second author is supported by NSF Grant BCS-1060323. The first author would like to express her gratitude towards AIRS's Atmosphere group in the Jet Propulsion Laboratory, which allowed her to start this research while her new workstation was in the process of being set up at CSULA during 2011 and 2012. The authors appreciate the three anonymous reviewers' valuable comments that improved the quality of this manuscript.
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