High accuracy line intensities for near-infrared carbon dioxide bands
Long, David A.
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https://hdl.handle.net/2142/104361
Description
Title
High accuracy line intensities for near-infrared carbon dioxide bands
Author(s)
Long, David A.
Contributor(s)
Hodges, Joseph T.
Mendonca, Joseph
Fleurbaey, Helene M.
Yi, Hongming
Adkins, Erin M.
Fleisher, Adam J.
Reed, Zachary
Issue Date
2019-06-20
Keyword(s)
Atmospheric science
Abstract
The near-infrared bands of carbon dioxide (CO$_{2}$) play an important role in point source as well as remote sensing measurements. Here we have measured high accuracy line intensities for the (30012)$\leftarrow$(00001), (30013)$\leftarrow$(00001), and (30014)$\leftarrow$(00001) bands near 1.6 $\mu$m. Three separate cavity ring-down spectrometers were employed: a frequency-agile, rapid scanning spectrometer and two frequency-stabilized spectrometers. Through this combination of instruments, we have reached relative combined standard uncertainties as low as 0.1$\%$ for the band intensities. I will discuss these measurements as well as comparisons to existing spectroscopic models and databases. Finally, I will present the results of atmospheric retrievals using these line intensities.
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