Auxiliary computation for Fourier spectrometry

Mertz, L.

doi:10.1016/0020-0891(67)90026-7

Cited by 190 publications

(72 citation statements)

References 3 publications

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“…The Bruker IFS 120HR Fourier transform spectrometer (FTS) was configured with a 150 W quartz tungsten halogen source, a calcium fluoride beam-splitter, and a liquid nitrogen-cooled indium antimonide (InSb) detector. Mertz phase correction [4] was applied to the measured interferograms. Optical filters were used to limit the optical bandwidth to the spectral range of the measurement.…”

Section: Methodsmentioning

confidence: 99%

Self-broadened line parameters for water vapour in the spectral region 5000–5600cm−1

Ptashnik

Shine

2005

Journal of Molecular Spectroscopy

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Section: Methodsmentioning

confidence: 99%

Self-broadened line parameters for water vapour in the spectral region 5000–5600cm−1

Ptashnik

Shine

2005

Journal of Molecular Spectroscopy

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“…Our interferogram processing currently includes a solar intensity variation correction (described below), a phase correction described by Forman et al [45], but with a convolution in the spectral domain as described by Mertz [46,47], and a fast Fourier transform based on the work of Bergland [48]. The InGaAs and Si detectors are sufficiently linear that no nonlinearity correction is required.…”

Section: (B) Interferogram Processingmentioning

confidence: 99%

The Total Carbon Column Observing Network

Wunch

Toon

Blavier

et al. 2011

Phil. Trans. R. Soc. A.

1,111

1,243

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A global network of ground-based Fourier transform spectrometers has been founded to remotely measure column abundances of CO 2 , CO, CH 4 , N 2 O and other molecules that absorb in the near-infrared. These measurements are directly comparable with the near-infrared total column measurements from space-based instruments. With stringent requirements on the instrumentation, acquisition procedures, data processing and calibration, the Total Carbon Column Observing Network (TCCON) achieves an accuracy and precision in total column measurements that is unprecedented for remotesensing observations (better than 0.25% for CO 2 ). This has enabled carbon-cycle science investigations using the TCCON dataset, and allows the TCCON to provide a link between satellite measurements and the extensive ground-based in situ network.

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“…After each day of measurements, the interferograms are assessed visually by the operator to check for data quality to remove any periods of total cloud contamination. The raw interferograms are then processed by the I2S (interferogramto-spectrum) software package, which corrects for solar intensity fluctuations (Keppel-Aleks et al, 2007), applies a phase correction (Mertz, 1967) and a laser sampling error (LSE) correction (Sect. 4.1 below), and then computes the spectra using a fast Fourier transform (Bergland, 1969).…”

Section: Data Processingmentioning

confidence: 99%

The Total Carbon Column Observing Network site description for Lauder, New Zealand

Pollard

Sherlock

Robinson

et al. 2017

Earth Syst. Sci. Data

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Abstract. In this paper we describe the retrievals of atmospheric trace gases from near-infrared, high-resolution solar absorption spectroscopy measurements at the Lauder atmospheric research station in New Zealand and submitted to the Total Carbon Column Observing Network (TCCON) archive.The Lauder site (45.034 • S, 169.68 • E, 370 m a.s.l.) is located within a sparsely populated region of the South Island of New Zealand and is sheltered from the prevailing wind direction by the Southern Alps, which gives the site a high number of clear-sky days and an air mass that is largely unmodified by regional anthropogenic sources. The Lauder TCCON archive consists of data from two instruments: a Bruker IFS 120HR from June 2004 to February 2010 and a Bruker IFS 125HR from February 2010 to present. The bias between the two instruments is assessed to be 0.068 % for CO 2 . Since measurements using the IFS 125HR began, the SD about the hourly mean has been better than 0.1 % for 96.81 % of CO 2 column retrievals.The retrievals have been calibrated against in situ airborne measurements to correct for biases and provide traceability to the World Meteorological Organization (WMO) scales with an accuracy of 0.1 % for CO 2 .The Lauder TCCON time series of retrieved dry-air mole fractions of CO 2 , CH 4 , N 2 O, HF, H 2 O, HDO and CO are available from the TCCON data archive.The DOIs are https://doi

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Auxiliary computation for Fourier spectrometry

Cited by 190 publications

References 3 publications

Self-broadened line parameters for water vapour in the spectral region 5000–5600cm−1

Self-broadened line parameters for water vapour in the spectral region 5000–5600cm−1

The Total Carbon Column Observing Network

The Total Carbon Column Observing Network site description for Lauder, New Zealand

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