Infrared absorption cross-sections in HITRAN2016 and beyond: Expansion for climate, environment, and atmospheric applications

Kochanov, Roman V.; Gordon, Iouli E.; Rothman, Laurence S.; Shine, Keith P.; Sharpe, Steven W.; Johnson, Timothy J.; Wallington, Timothy J.; Harrison, Jeremy J.; Bernath, P. F.; Birk, Manfred; Wagner, Georg; Bris, Karine Le; Bravo, Iván; Hill, Christian

doi:10.1016/j.jqsrt.2019.04.001

Cited by 60 publications

(67 citation statements)

References 136 publications

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“…Tables S7-S13 in the supporting information provide information on how the RE numbers were derived and list previously published absorption cross sections and reported RE values from the literature. In addition to the compound groups included in H2013, we have made RE calculations for a number of other compounds, mainly based on absorption spectra from the HITRAN 2016 (Kochanov et al, 2019) and PNNL (Sharpe et al, 2004) databases. These results are presented in Tables S14-S20 and a brief discussion of these results is given in section 3.3.8 below.…”

Section: Updated Spectra Res and Gwps For Other Weak Atmospheric Abmentioning

confidence: 99%

“…Emissions of HFCs, perfluorocarbons, SF 6 , and NF 3 are included in the United Nations Framework Convention on Climate Change (UNFCCC). Controls on emissions of HFCs, in addition to CFCs and HCFCs, are included in the 2016 Kigali Agreement to the Montreal Protocol (see discussion in Kochanov et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Additional infrared absorption spectra and refinements in estimations of the atmospheric lifetimes of halocarbons and other compounds have become available since our last review. Specifically, we have considered and included absorption spectra given as supporting information to published papers, and from the HITRAN2016 (Kochanov et al, 2019) and PNNL (Sharpe et al, 2004) Figure 1. Atmospheric abundances of important halocarbons (and SF 6 ), separated into (a) lower and (b) higher mole fractions and based on observations from a number of stations (from WMO/GAW, 2019).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Updated Global Warming Potentials and Radiative Efficiencies of Halocarbons and Other Weak Atmospheric Absorbers

Hodnebrog

Aamaas

Fuglestvedt

et al. 2020

Reviews of Geophysics

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Human activity has led to increased atmospheric concentrations of many gases, including halocarbons, and may lead to emissions of many more gases. Many of these gases are, on a per molecule basis, powerful greenhouse gases, although at present‐day concentrations their climate effect is in the so‐called weak limit (i.e., their effect scales linearly with concentration). We published a comprehensive review of the radiative efficiencies (RE) and global warming potentials (GWP) for around 200 such compounds in 2013 (Hodnebrog et al., 2013, https://doi.org/10.1002/rog.20013). Here we present updated RE and GWP values for compounds where experimental infrared absorption spectra are available. Updated numbers are based on a revised “Pinnock curve”, which gives RE as a function of wave number, and now also accounts for stratospheric temperature adjustment (Shine & Myhre, 2020, https://doi.org/10.1029/2019MS001951). Further updates include the implementation of around 500 absorption spectra additional to those in the 2013 review and new atmospheric lifetimes from the literature (mainly from WMO (2019)). In total, values for 60 of the compounds previously assessed are based on additional absorption spectra, and 42 compounds have REs which differ by >10% from our previous assessment. New RE calculations are presented for more than 400 compounds in addition to the previously assessed compounds, and GWP calculations are presented for a total of around 250 compounds. Present‐day radiative forcing due to halocarbons and other weak absorbers is 0.38 [0.33–0.43] W m−2, compared to 0.36 [0.32–0.40] W m−2 in IPCC AR5 (Myhre et al., 2013, https://doi.org/10.1017/CBO9781107415324.018), which is about 18% of the current CO2 forcing.

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Section: Updated Spectra Res and Gwps For Other Weak Atmospheric Abmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Updated Global Warming Potentials and Radiative Efficiencies of Halocarbons and Other Weak Atmospheric Absorbers

Hodnebrog

Aamaas

Fuglestvedt

et al. 2020

Reviews of Geophysics

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“…The 2-13 C-Propene impurity peaks are labelled in green. The lower trace is a low-resolution spectrum of normal propane for comparison, taken from PNNL [48] as available from the HITRAN database [49].…”

Section: Results and Analysismentioning

confidence: 99%

First high-resolution infrared spectra of 2–13C-propane: Analyses of the ν26 (B2) c-type and ν9 (A1) b-type bands

Daunt

Grzywacz

Western

et al. 2020

Journal of Molecular Structure

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This paper presents the first high resolution (Δν = 0.00096 cm −1) IR investigation of 2-13 C-propane. Spectra of the ν9(A1) CCC skeletal bending mode near 336.767 cm −1 (a b-type band) and the ν26(B2) methylene (CH2) rocking mode near 746.614 cm −1 (a c-type band) were recorded at the Canadian Light Source (CLS) synchrotron. The spectra were assigned both traditionally and with the aid of the PGOPHER program. As only limited microwave data are available for this molecule the present data was used to determine a new set of ground state constants that included centrifugal distortion terms. Upper state constants for both bands have been determined that provide a good simulation of the spectra. The analysis also included the strong a-type Coriolis resonance between the ν26 and 2ν9 states that causes strong perturbation-allowed transitions to appear in the spectrum. Lines of the 2ν9-ν9 hot band were also assigned and included in our analysis of the bending region. This data will be useful in identifying isotopic propane lines in Titan and other astrophysical objects.

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“…HITRAN line-by-line data (Gordon et al, 2017) as well as the PNNL 50 °C gas-phase reference spectra (Kochanov, 2019;Johnson et al, 2006Johnson et al, , 2010 as input libraries was used to identify and quantify vapor-phase chemicals in the spectra. Spectra were compiled into parameter files and analyzed by the MALT software using parameters including pressure, temperature, pathlength, resolution, as well as estimated initial values for chemical mixing ratios.…”

Section: Spectral Analysismentioning

confidence: 99%

Dynamic Infrared Gas Analysis from Longleaf Pine Fuelbeds Burned in a Wind Tunnel: Observation of Phenol in Pyrolysis and Combustion Phases

Banach¹,

Williams²,

Bradley³

et al. 2020

Preprint

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Abstract. Pyrolysis is the first step in a series of chemical and physical processes that produce flammable organic gases from wildland fuels that can result in a wildland fire. We report results using a new time-resolved Fourier transform infrared method that correlates the measured FTIR spectrum to an infrared thermal image sequence enabling identification and quantification of gases within different phases of the fire process. The flame from burning fuel beds composed of pine needles (Pinus palustris) and mixtures of sparkleberry, fetterbush and inkberry plants was the natural heat source for pyrolysis. Extractive gas samples were analyzed and identified in both static and dynamic modes synchronized to thermal infrared imaging: A total of 29 gases were identified including small alkanes, alkenes, aldehydes, nitrogen compounds and aromatics, most previously measured by FTIR in wildland fires. This study presents one of the first identifications of phenol associated with both pre-combustion and combustion phases, using ca. 1 Hz resolution. Preliminary results indicate ~ 2.5× greater phenol emission from sparkleberry and inkberry compared to fetterbush, with differing temporal profiles.

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Infrared absorption cross-sections in HITRAN2016 and beyond: Expansion for climate, environment, and atmospheric applications

Cited by 60 publications

References 136 publications

Updated Global Warming Potentials and Radiative Efficiencies of Halocarbons and Other Weak Atmospheric Absorbers

Updated Global Warming Potentials and Radiative Efficiencies of Halocarbons and Other Weak Atmospheric Absorbers

First high-resolution infrared spectra of 2–13C-propane: Analyses of the ν26 (B2) c-type and ν9 (A1) b-type bands

Dynamic Infrared Gas Analysis from Longleaf Pine Fuelbeds Burned in a Wind Tunnel: Observation of Phenol in Pyrolysis and Combustion Phases

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