Water vapour line assignments in the 9250 – 26000 cm 1 frequency range
نویسندگان
چکیده
Line parameters for water vapour in natural abundance have recently been determined for the 9250–13000 cm 1 region [M.-F. Mérienne, A. Jenouvrier, C. Hermans, A.C. Vandaele, M. Carleer, C. Clerbaux, P.-F. Coheur, R. Colin, S. Fally, M. Bach, J. Quant. Spectrosc. Radiat. Transfer 82 (2003) 99] and the 13000–26000 cm 1 region [P.-F. Coheur, S. Fally, M. Carleer, C. Clerbaux, R. Colin, A. Jenouvrier, M.-F. Mérienne, C. Hermans, A.C. Vandaele, J. Quant. Spectrosc. Radiat. Transfer 74 (2002) 493] using a high-resolution Fourier-transform spectrometer with a long-path absorption cell. These spectra are analysed using several techniques including variational line lists and assignments made. In total, over 15000 lines were assigned to transitions involving more than 150 exited vibrational states of H2 O. Twelve new vibrational band origins are determined and estimates for a further 16 are presented. 2005 Elsevier Inc. All rights reserved.
منابع مشابه
Water vapour sensing using polarization selection of a Zeeman-split argon discharge lamp emission line
Water vapour concentrations are measured using the optical absorption of a Zeeman-split emission line of an argon discharge lamp. When a longitudinal magnetic field of the proper magnitude is used to split the emission line, two components of opposite circular polarization are produced: one coincident, and one off-resonance with respect to a water vapour absorption line at 10 687.36 cm−1. Diffe...
متن کاملWater line parameters for weak lines in the range 7400 – 9600 cm 1
A long pathlength, Fourier transform spectrum of pure water vapour [J. Mol. Spectrosc. 211 (2002) 169] has been fitted and analysed. Line centres, intensities, and self-broadening parameters have been obtained for about 3900 lines with intensities less then 1 · 10 24 cm/molecule. Transitions to 240 newly observed energy levels of H2O have been identified. 855 lines have been assigned to three o...
متن کاملIntensities and self-broadening coefficients of the strongest water vapour lines in the 2.7 and 6.25μm absorption bands
Intensities and self-broadening coefficients are presented for about 460 of the strongest water vapour lines in the spectral regions 1400–1840 cm 1 and 3440–3970 cm 1 at room temperature, obtained from rather unique measurements using a 5-mm-path-length cell. The retrieved spectral line parameters are compared with those in the HITRAN database ver. 2008 and 2012 and with recent ab-initio calcul...
متن کاملDevelopment and recent evaluation of the MT_CKD model of continuum absorption.
Water vapour continuum absorption is an important contributor to the Earth's radiative cooling and energy balance. Here, we describe the development and status of the MT_CKD (MlawerTobinCloughKneizysDavies) water vapour continuum absorption model. The perspective adopted in developing the MT_CKD model has been to constrain the model so that it is consistent with quality analyses of spectral atm...
متن کاملExperimental Study for Investigating the Mechanism of Heat Transfer near the Critical Heat Flux in Nucleate Pool Boiling
Heat transfer coefficient in nucleate pool boiling near critical heat flux at least one orderhigher than the convectional heat transfer modes. In this paper, an experimental setup isdesigned and fabricated to investigate the mechanism of heat transfer from boiling surface tobulk liquid near critical heat flux. The images of pool boiling near the high heat flux regionreveals that the individual ...
متن کامل