Measurements and modelling of high pressure pure CO2 spectra from 750 to 8500cm-1. I—central and wing regions of the allowed vibrational bands. (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Measurements and modelling of high pressure pure CO2 spectra from 750 to 8500cm-1. I—central and wing regions of the allowed vibrational bands. (Articolo in rivista) (literal)

Anno

• 2011-01-01T00:00:00+01:00 (literal)

Alternative label

• Tran, H.; C.Boulet; S.Stefani; M.Snels; G.Piccioni. (2011)
  Measurements and modelling of high pressure pure CO2 spectra from 750 to 8500cm-1. I—central and wing regions of the allowed vibrational bands.
  in Journal of Quantitative Spectroscopy & Radiative Transfer
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Tran, H.; C.Boulet; S.Stefani; M.Snels; G.Piccioni. (literal)

Pagina inizio

• 925 (literal)

Pagina fine

• 936 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 112 (literal)

Rivista

• Journal of Quantitative Spectroscopy & Radiative Transfer (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1. Univ Paris Est, LISA, CNRS, UMR 7583, F-94010 Creteil, France 2. Univ Paris Diderot, F-94010 Creteil, France 3. Univ Paris 11, Inst Sci Mol ISMO, UMR8214, F-91405 Orsay, France 4. CNRS, F-91405 Orsay, France 5. INAF IASF, I-10000133 Rome, Italy 6. ISAC CNR, I-10000133 Rome, Italy (literal)

Titolo

• Measurements and modelling of high pressure pure CO2 spectra from 750 to 8500cm-1. I—central and wing regions of the allowed vibrational bands. (literal)

Abstract

• Precisemodellingofinfraredabsorptionbycarbondioxideisofprimaryimportancefor radiativetransfercalculationsinCO2-rich atmosphereslikethoseofVenusandMars. Despitevariousmeasurementsandtheoreticalmodelsdedicatedtothissubject,accurate data atdifferenttemperaturesandpressuresarestilllackinginnumerousspectral regions.Inthiswork,usingtwoFourierTransformSpectrometers,wehavemeasured spectraofpureCO2 in alargespectralregionrange,from750to8500cm-1 at various densities(3–57amagat)andtemperatures(230–473K).Comparisonsbetweenmea- sured dipolarabsorptionbandsandspectracalculatedwiththewidelyusedLorentzline shapeshowverylargediscrepancies.ThisresultisexpectedsincetheLorentzapproach neglectsline-couplingeffectsduetointermolecularcollisionswhichtransferabsorption from thewingstothebandcenter.Inordertoaccountforthiseffect,atheoretical approachbasedontheimpactandEnergyCorrectedSuddenapproximationshasbeen developed.Comparisonsofthismodelwithnumerouslaboratoryspectrainawiderange of pressure,temperatureandspectraldomainshowsatisfactoryagreementsforband centersandnearwingregionswheretheimpactapproximationisvalid.However,as expected,duetothebreakdownoftheimpactapproximation,themodelfailswhen consideringfarwingregions.Intheabsenceofprecisemodelsaccountingforline-mixing and finite collisionduration(nonimpact)effects,empiricalapproximationsareproposed in ordertomodelthefarwings. (literal)

Prodotto di

• Composizione dell'atmosfera: tecniche avanzate per la misura di gas in traccia e aerosol nella atmosfera terrestre e in altri pianeti del sistema solare (TA.P02.010.007) (Modulo)
• Institute of atmospheric sciences and climate (ISAC) (Istituto)

Autore CNR

• MARCELLINUS SNELS (Unità di personale interno)

Incoming links:

Prodotto

• Institute of atmospheric sciences and climate (ISAC) (Istituto)
• Composizione dell'atmosfera: tecniche avanzate per la misura di gas in traccia e aerosol nella atmosfera terrestre e in altri pianeti del sistema solare (TA.P02.010.007) (Modulo)

Autore CNR di

• MARCELLINUS SNELS (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of Quantitative Spectroscopy & Radiative Transfer (Rivista)