Apodization effects in the retrieval of volume mixing ratio profiles

C D  Boone; S D  McLeod; P F  Bernath

Apodization effects in the retrieval of volume mixing ratio profiles

C D Boone, S D McLeod, P F Bernath

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

In remote sensing applications, spectra measured by Fourier-transform spectrometers are routinely apodized. A rigorous analysis approach would explicitly account for correlations induced in the covariance matrix by apodization, but these correlations are often ignored to simplify and speed up the processing. Using spectra measured by the Atmospheric Trace Molecule Spectroscopy missions, we investigated the effect of apodization on the retrieval of volume mixing ratio profiles for the case in which these correlations are ignored. Minor discrepancies occur between results for apodized and unapodized spectra, particularly when lines with a low signal-to-noise ratio are fitted. A set of microwindows is reported for O-3 in the range of 1550-3350 cm(-1). (C) 2002 Optical Society of America.

Original language	English
Pages (from-to)	1029-1034
Number of pages	6
Journal	Applied Optics
Volume	41
Issue number	6
Publication status	Published - 20 Feb 2002

Keywords

FT-IR SPECTROMETRY
BEERS-LAW
SPECTROSCOPY
RANGE

Cite this

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title = "Apodization effects in the retrieval of volume mixing ratio profiles",

abstract = "In remote sensing applications, spectra measured by Fourier-transform spectrometers are routinely apodized. A rigorous analysis approach would explicitly account for correlations induced in the covariance matrix by apodization, but these correlations are often ignored to simplify and speed up the processing. Using spectra measured by the Atmospheric Trace Molecule Spectroscopy missions, we investigated the effect of apodization on the retrieval of volume mixing ratio profiles for the case in which these correlations are ignored. Minor discrepancies occur between results for apodized and unapodized spectra, particularly when lines with a low signal-to-noise ratio are fitted. A set of microwindows is reported for O-3 in the range of 1550-3350 cm(-1). (C) 2002 Optical Society of America.",

keywords = "FT-IR SPECTROMETRY, BEERS-LAW, SPECTROSCOPY, RANGE",

author = "Boone, {C D} and McLeod, {S D} and Bernath, {P F}",

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pages = "1029--1034",

journal = "Applied Optics",

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TY - JOUR

T1 - Apodization effects in the retrieval of volume mixing ratio profiles

AU - Boone, C D

AU - McLeod, S D

AU - Bernath, P F

PY - 2002/2/20

Y1 - 2002/2/20

N2 - In remote sensing applications, spectra measured by Fourier-transform spectrometers are routinely apodized. A rigorous analysis approach would explicitly account for correlations induced in the covariance matrix by apodization, but these correlations are often ignored to simplify and speed up the processing. Using spectra measured by the Atmospheric Trace Molecule Spectroscopy missions, we investigated the effect of apodization on the retrieval of volume mixing ratio profiles for the case in which these correlations are ignored. Minor discrepancies occur between results for apodized and unapodized spectra, particularly when lines with a low signal-to-noise ratio are fitted. A set of microwindows is reported for O-3 in the range of 1550-3350 cm(-1). (C) 2002 Optical Society of America.

AB - In remote sensing applications, spectra measured by Fourier-transform spectrometers are routinely apodized. A rigorous analysis approach would explicitly account for correlations induced in the covariance matrix by apodization, but these correlations are often ignored to simplify and speed up the processing. Using spectra measured by the Atmospheric Trace Molecule Spectroscopy missions, we investigated the effect of apodization on the retrieval of volume mixing ratio profiles for the case in which these correlations are ignored. Minor discrepancies occur between results for apodized and unapodized spectra, particularly when lines with a low signal-to-noise ratio are fitted. A set of microwindows is reported for O-3 in the range of 1550-3350 cm(-1). (C) 2002 Optical Society of America.

KW - FT-IR SPECTROMETRY

KW - BEERS-LAW

KW - SPECTROSCOPY

KW - RANGE

M3 - Article

SN - 0003-6935

VL - 41

SP - 1029

EP - 1034

JO - Applied Optics

JF - Applied Optics

IS - 6

ER -