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The discovery of the near infrared windows into the Venus deep atmosphere has enabled the use of remote sensing techniques to study the composition of the Venus atmosphere below the clouds. In particular, water vapor absorption lines can be…

Earth and Planetary Astrophysics · Physics 2015-05-13 Jeremy Bailey

We obtained laboratory spectra of absorption by water vapor at the wavelengths 6500-10500 {\AA} with the multipass cell. The water vapor content along the line of view varied from 0.1 to 3.0 cm of precipitated water, the pressure from 0.1…

Instrumentation and Methods for Astrophysics · Physics 2010-10-26 G. A. Alekseeva , V. D. Galkin , I. B. Sal'nikov

Absorption of terahertz radiation by atmospheric water vapor is a serious impediment for radio astronomy and for long-distance communications. Transmission in the THz regime is dependent almost exclusively on atmospheric precipitable water…

Instrumentation and Methods for Astrophysics · Physics 2014-01-30 Jonathan Y. Suen , Michael T. Fang , Philip M. Lubin

An accurate estimate of the inner edge of the habitable zone is critical for determining which exoplanets are potentially habitable and for designing future telescopes to observe them. Here, we explore differences in estimating the inner…

First detections of thermal water vapor absorption lines have been made toward Orion IRc2 using the Short Wavelength Spectrometer (SWS) on board the Infrared Space Observatory (ISO). Grating spectra covering wavelengths 25-45 micron yield…

State-of-the-art molecular databases and realistic global atmospheric models allow to predict accurate atmospheric transmittance spectra. The TAPAS online service provides atmospheric transmittance spectra of the most important species as…

Instrumentation and Methods for Astrophysics · Physics 2025-09-17 R. Lallement , J. L. Bertaux , S. Ferron , C. Boonne , E. Richard , F. Lefèvre , J. V. Smoker

The Radiative Transfer Model (RTM) and the retrieval algorithm, incorporated in the SCIATRAN 2.2 software package developed at the Institute of Remote Sensing/Institute of Enviromental Physics of Bremen University (Germany), allows to…

Instrumentation and Methods for Astrophysics · Physics 2012-09-12 A. Gardini , J. Maíz Apellániz , E. Pérez , J. A. Quesada , B. Funke

Doppler broadening presents a major limitation for high-resolution spectroscopy and nonlinear optics in room-temperature atomic vapors. Here, we demonstrate the suppression of Doppler broadening accompanied by pronounced absorption on the…

We report new constraints on the vertical distribution of sulfuric acid vapor in the Venusian atmosphere, derived from a refined analysis of radio occultation (RO) data. The method estimates the power spectral density (PSD) of the received…

Earth and Planetary Astrophysics · Physics 2026-01-14 S. Banerjee , R. K. Choudhary , K. R. Tripathi , T. Imamura , H. Ando

We describe here a new algorithm to model the water contents of the atmosphere from GNSS slant wet delays relative to a single receiver. We first make the assumption that the water vapor contents are mainly governed by a scale height…

Atmospheric and Oceanic Physics · Physics 2021-02-04 Jean-Pierre Barriot , Jonathan Serafini , Lydie Sichoix

We present a study of water vapour in the Venus troposphere obtained by modelling specific water vapour absorption bands within the 1.18 \mu m window. We compare the results with the normal technique of obtaining the abundance by matching…

Earth and Planetary Astrophysics · Physics 2012-12-06 S. Chamberlain , J. A. Bailey , D. Crisp , V. S. Meadows

The Thirty Meter Telescope (TMT) and the European Extremely Large Telescope (E-ELT) site testing teams have recently finalized their site testing studies. Since atmospheric water vapor is the dominant source of absorption and increased…

Instrumentation and Methods for Astrophysics · Physics 2011-03-17 Angel C. Otarola , Richard Querel , Florian Kerber

Turbulent mixing layers (TMLs) are ubiquitous in multiphase gas. They can potentially explain observations of high ions such as O VI, which have significant observed column densities despite short cooling times. Previously, we showed that…

Astrophysics of Galaxies · Physics 2021-09-01 Brent Tan , S. Peng Oh

The influence of deep convection on water vapor in the Tropical Tropopause Layer (TTL), the region just below the high ($\sim$18 km), cold tropical tropopause, remains an outstanding question in atmospheric science. Moisture transport to…

Atmospheric and Oceanic Physics · Physics 2016-12-07 Maximilien Bolot , Bernard Legras , Kaley A. Walker , Christopher D. Boone , Peter Bernath , William G. Read , Elisabeth J. Moyer

Ground-based telescopes equipped with state-of-the-art spectrographs are able to obtain high-resolution transmission and emission spectra of exoplanets that probe the structure and composition of their atmospheres. Various atomic and…

Earth and Planetary Astrophysics · Physics 2017-11-01 R. Allart , C. Lovis , L. Pino , A. Wyttenbach , D. Ehrenreich , F. Pepe

We here show that dual-band GPS measurements of precipitable water vapor (PWV) at KPNO predict the overall per-image sensitivity of the Mayall z-band Legacy Survey (MzLS). The per-image variation in the brightness of individual stars is…

Instrumentation and Methods for Astrophysics · Physics 2020-10-28 W. M. Wood-Vasey , Daniel Perrefort , Ashley Baker

Observations of the 1(10)-1(01) 556.936 GHz transition of ortho-water with the Submillimeter Wave Astronomy Satellite (SWAS) have revealed the presence of widespread emission and absorption by water vapor around the strong submillimeter…

Astrophysics · Physics 2009-11-07 David A. Neufeld , Edwin A. Bergin , Gary J. Melnick , Paul F. Goldsmith

We have conducted a study combining H2O lines in two spectral regions. First, Infrared Space Observatory observations of several H2O thermal lines seen in absorption toward Sgr B2(M) at a spectral resolution of 35 kms^-1 have been analyzed.…

Astrophysics · Physics 2009-11-11 J. Cernicharo , J. R. Goicoechea , J. R. Pardo , A. Asensio Ramos

Experiments on 2D random water wave propagation in a large wave tank are analyzed when the effect of dispersion changes. A stereoscopic profilometry technique is used to measure the water surface displacement resolved in both time and space…

Modeling molecular absorption by Earth's atmosphere is important for a wide range of astronomical observations, including broadband NIR photometry and high-resolution NIR spectroscopy. Using a line-by-line radiative transfer approach, we…

Instrumentation and Methods for Astrophysics · Physics 2015-05-30 Cullen H. Blake , Margaret M. Shaw
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