62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 RECENT APPLICATIONS AND FUTURE PROSPECTS OF METHANE SPECTROSCOPY TO THE.

Slides:

Advertisements

Similar presentations

Titan: an overview Basic facts Motivation Radiative transfer

Advertisements

Spectro-imaging observations of H 3 + on Jupiter Observatoire de Paris, France Emmanuel Lellouch.

Water Ice on Titan’s Surface Spectra were obtained of the leading and trailing hemispheres of Titan with SpeX at 0.8–5.1 microns with the IRTF and at 4.6–5.2.

Toward a global model of low-lying vibrational states of methyl cyanide, CH 3 CN: the v 4 = 1 state at 920 cm –1 and its interactions with nearby states.

Mathematical Methods for Ab Initio Quantum Chemistry Nice October 20–21, 2006 Symmetry-Adapted Tensorial Formalism to Model Rovibrational and Rovibronic.

1 TCCON at Caltech, May 2008 New Line Parameters for Near-IR Methane and the Oxygen A-Band presented by Linda R. Brown (JPL) World-wide Effort Belgium,

The Earthshine Spectrum in the Near Infrared M. Turnbull 1, W. Traub 2, K. Jucks 3, N. Woolf 4, M. Meyer 4, N. Gorlova 4, M. Skrutskie 5, J. Wilson 5 1.

Analysis of the 18 O 3 CRDS spectra in the 6000 – 7000 cm -1 spectral range : comparison with 16 O 3. Marie-Renée De Backer-Barilly, Alain Barbe, Vladimir.

HIGH-RESOLUTION ANALYSIS OF VARIOUS PROPANE BANDS: MODELING OF TITAN'S INFRARED SPECTRUM J.-M. Flaud.

Molecules in planetary atmospheres Emmanuel Lellouch Observatoire de Paris.

S&MPO linelist of 16 O 3 in the range 6000 – 7000 cm -1. M.-R. De Backer-Barilly #, Semen N. Mikhailenko*, Yurii Babikov*, Alain Campargue §, Samir Kassi.

ERROR PROPAGATION FROM LINE PARAMETERS TO SPECTRA SIMULATIONS Illustration on High Temperature Methane. Jean Paul Champion & Christian Wenger Laboratoire.

A. Barbe, M.R. De Backer-Barilly, Vl.G. Tyuterev, A. Campargue 1, S.Kassi 1 Updated line-list of 16 O 3 in the range 5860 – 7000 cm -1 deduced from CRDS.

Moons of the solar system: 3 categories: 7 large (each is distinctive) 12 medium-size many small (most are captured)

9th Biennal HITRAN Conference Harvard-Smithsonian Center for Astrophysics June 26–28, 2006 GLOBAL FREQUENCY AND INFRARED INTENSITY ANALYSIS OF 12 CH 4.

 ( ) 0+   ( ) 0–  4 1 Results at 2.5 microns 2 +( ) 1 II (

RECENT ADVANCES IN THE SPECTROSCOPY OF PLANETARY AND EXOPLANETARY ATMOSPHERES : WHAT IS OUT THERE ? Hitran 2010 Pierre Drossart LESIA, Observatoire de.

Agnés Perrin Laboratoire Interuniversitaire des Systémes Atmosphériques (LISA), CNRS, Université Paris XII, Créteil C.Bray,

EXPERIMENTAL ABSORPTION SPECTRA OF HOT CH 4 IN THE PENTAD AND OCTAD REGION ROBERT J. HARGREAVES MICHAEL DULICK PETER F.

HIGH-RESOLUTION ABSORPTION CROSS SECTIONS OF C 2 H 6 AND C 3 H 8 AT LOW TEMPERATURES ROBERT J. HARGREAVES DANIEL J. FROHMAN

Einstein A coefficients for vibrational-rotational transitions of NO

Rovibrational Phase- Space Surfaces for Analysis of the υ 3 /2 υ 4 Polyad Band of CF 4 Justin Mitchell, William Harter, University of Arkansas Vincent.

66th Ohio State University Symposium on Molecular Spectroscopy June 20–24, 2011 HIGH RESOLUTION SPECTROSCOPY AND GLOBAL ANALYSIS OF THE TETRADECAD REGION.

National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology P21E Low-latitude ethane rain on Titan.

Upper haze on the night side of Venus from VIRTIS-M / Venus Express limb observations D. Gorinov (1,2), N. Ignatiev (1,2), L. Zasova (1,2), G. Piccioni.

Columbus, June , 2005 Stark Effect in X 2 Y 4 Molecules: Application to Ethylene M. ROTGER, W. RABALLAND, V. BOUDON, and M. LOËTE Laboratoire de.

Venus : the lost world Pierre Drossart LESIA, Observatoire de Paris.

Emission Spectra of H 2 17 O and H 2 18 O from 320 to 2500 cm -1 Semen MIKHAILENKO 1, Georg MELLAU 2, and Vladimir TYUTEREV 3 1 Laboratory of Theoretical.

69 th International Symposium on Molecular Spectroscopy / Champaign-Urbana, Illinois, USA, June 16–20, 2014 HIGH-RESOLUTION INFRARED SPECTROSCOPY OF CUBANE,

Xinchuan Huang, 1 David W. Schwenke, 2 Timothy J. Lee 2 1 SETI Institute, Mountain View, CA 94043, USA 2 NASA Ames Research Center, Moffett Field, CA 94035,

68th Ohio State University Symposium on Molecular Spectroscopy June 17–21, 2013 SF 6 THE FORBIDDEN BAND UNVEILED V. BOUDON, Laboratoire Interdisciplinaire.

1 The Organic Aerosols of Titan’s Atmosphere Christophe Sotin, Patricia M. Beauchamp and Wayne Zimmerman Jet Propulsion Laboratory, California Institute.

61th Ohio State University Symposium on Molecular Spectroscopy June 19–23, 2006 GLOBAL FREQUENCY AND INFRARED INTENSITY ANALYSIS OF 12 CH 4 LINES IN THE.

Seasonal Change in Titan’s Cloud Activity (A Titan Weather report) Emily Schaller (Caltech) Mike Brown (Caltech), Henry Roe (Lowell Observatory)

64th Ohio State University Symposium on Molecular Spectroscopy June 22–26, 2009 THE HIGH RESOLUTION FAR- INFRARED SPECTRUM OF METHANE AT THE SOLEIL SYNCHROTRON.

69 th International Symposium on Molecular Spectroscopy / Champaign-Urbana, Illinois, USA, June 16–20, 2014 CH 4, C 2 H 4, SF 6 AND CF 4 CALCULATED SPECTROSCOPIC.

Valerie Klavans University of Maryland Conor Nixon University of Maryland, NASA GSFC Tilak Hewagama University of Maryland, NASA GSFC Donald E. Jennings.

The 1 and 6 bands of diiodo- methane CH 2 I 2 around 3.3  m studied by high-resolution FTS J. Orphal, N. Ibrahim Laboratoire Interuniversitaire des Systèmes.

COMPARATIVE TEMPERATURE RETRIEVALS BASED ON VIRTIS/VEX AND PMV/VENERA-15 RADIATION MEASUREMENTS OVER THE NORTHERN HEMISPHERE OF VENUS R. Haus (1), G. Arnold.

60th Ohio State University Symposium on Molecular Spectroscopy June 20–24, 2005 XTDS: A Java-Based Interface to Analyze and Simulate Spectra of Various.

A COMPREHENSIVE INTENSITY STUDY OF THE 4 TORSIONAL BAND OF ETHANE J. NOROOZ OLIAEE, N. Moazzen-Ahmadi Institute for Quantum Science and Technology Department.

IGRINS Science Workshop High Spectral Resolution Mid- Infrared Spectroscopy as a Probe of the Physical State of Planetary Atmospheres August 26,

66th Ohio State University Symposium on Molecular Spectroscopy June 20–24, 2011 HIGH RESOLUTION SPECTROSCOPY AND PRELIMINARY ANALYSIS OF C–H STRETCHING.

65th Ohio State University Symposium on Molecular Spectroscopy June 21–25, 2010 Stark spectrum simulation of X 2 Y 4 asymmetric molecules: application.

Cassini-Huygens/VIMS at T0 and Ta: A Taste of Titanic Things to Come K. H. Baines, B. Buratti, P. Drossart, C. Griffith, R. Jaumann, R. M. Nelson, R. H.

68th Ohio State University Symposium on Molecular Spectroscopy June 17–21, 2013 Frequency Analysis of the 10 μm Region of the Ethylene Spectrum using the.

Aerosol distribution and physical properties in the Titan atmosphere D. E. Shemansky 1, X. Zhang 2, M-C. Liang 3, and Y. L. Yung 2 1 SET/PSSD, California,

Preliminary modeling of CH 3 D from 4000 to 4550 cm -1 A.V. Nikitin 1, L. R. Brown 2, K. Sung 2, M. Rey 3, Vl. G. Tyuterev 3, M. A. H. Smith 4, and A.W.

70 th International Symposium on Molecular Spectroscopy / Champaign-Urbana, Illinois, USA, June 22–26, 2015 LOW-TEMPERATURE COLLISIONAL BROADENING IN THE.

Clouds in the Tropics of Titan Emily Schaller Lunar and Planetary Laboratory, University of Arizona 2010 Hubble Fellows Symposium.

60th Ohio State University Symposium on Molecular Spectroscopy June 20–24, 2005 Rotational Raman Spectroscopy of Ethylene Using a Femtosecond Time-Resolved.

A. Barbe, M.-R. De Backer-Barilly, Vl.G. Tyuterev Analysis of CW-CRDS spectra of 16 O 3 : 6000 to 6200 cm -1 spectral range Groupe de Spectrométrie Moléculaire.

The Complete, Temperature Resolved Spectrum Of Methyl Formate Between 214 and 265 GHz JAMES P. MCMILLAN, SARAH M. FORTMAN, CHRISTOPHER F. NEESE, and FRANK.

INTRACAVITY LASER SPECTRA OF METHANE 790 AND 861 nm BANDS AT LOW TEMPERATURES SADASIVAN SHAJI and JAMES J O’BRIEN Department of Chemistry & Biochemistry.

1 70 th Symp. Mol. Spectrosc MJ14 13 CH 4 in the Octad Measurement and modeling of cold 13 CH 4 spectra from 2.1 to 2.7 µm Linda R. Brown 1, Andrei.

A dynamic database of molecular model spectra

EXPERIMENTAL LINE LISTS OF HOT METHANE Image credit: Mark Garlick MONDAY 22 nd JUNE 2015 ROBERT J. HARGREAVES MICHAEL DULICK PETER F.

Infrared spectroscopy of planetological molecules Isabelle Kleiner Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), Créteil, France.

ANH T. LE, GREGORY HALL, TREVOR SEARSa Division of Chemistry

Planetary Models for Herschel

Tymon Khamsi, Caitlin Griffith, Lyn Doose, Jake Turner, Paulo Penteado

International Symposium on Molecular Spectroscopy

Large moons of the solar system: Titan

HIGH RESOLUTION SPECTROSCOPY OF THE CARBON CAGE ADAMANTANE C10H16

International Symposium on Molecular Spectroscopy

Andy Wong Robert J. Hargreaves Peter F. Bernath Michaël Rey

High-Resolution Spectroscopy and Analysis of the n3/2n4 Dyad of CF4

* 07/16/96 Constraints on Titan’s Hign Haze from Cassini UVIS/ISS and Huygens DISR Observations *

Fourier Transform Infrared Spectral

d'Opale, F Dunkerque, France,

Presentation transcript:

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 RECENT APPLICATIONS AND FUTURE PROSPECTS OF METHANE SPECTROSCOPY TO THE ATMOSPHERE OF TITAN Vincent BOUDON Institut Carnot de Bourgogne – UMR 5209 CNRS-Université de Bourgogne, 9 Av. A. Savary, BP 47870, F DIJON, France Athéna COUSTENIS, Emmanuel LELLOUCH, Pierre DROSSART LESIA, Observatoire de Paris-Meudon, 5 Place Jules Jansen, F MEUDON, France Alberto NEGRÃO Observatorio Astronomico and Faculdade de Ciências da Universidade de Lisboa, , LISBOA, Portugal Caitlin A. GRIFFITH Lunar and Planetary Laboratory, University of Arizona, TUCSON, AZ 85721, USA

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 Contents I.Methane on Titan II.Status of CH 4 spectroscopy III.Application of the octad’s modeling IV.Perspectives for CH 4 spectroscopy

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 I. Methane on Titan

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 Titan: Methane everywhere! Lakes Rivers Cryovolcanoes? Clouds Atmosphere Soil (clathrates?)

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 DISR spectrum of Titan (Huygens / ESA)

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 Use of CH 4 spectroscopy on Titan Measure methane concentration (1.6 % stratosphere, 5 % ground) Determine methane’s origin Retrieve methane vertical profiles Remove methane spectrum to find minor species Retrieve haze profile Measure surface albedo Visible939 nm

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 II. Status of CH 4 spectroscopy

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 The polyads of CH 4 « Saturn Methane Image » – 16/02/2004 Cassini / MT2 Filter : 727 nm = cm -1  Global fit  Titan 939 nm CH 4 window

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 Present status of CH 4 analyses (early 2007) Polyad / Spectral regionLine positionsLine intensitiesLine shapes 1 – Ground state 0–200 cm -1 (> 5.0  m) Complete analysis, J ≤ 24 Complete analysisNo analysis 2 – Dyad 1000–1800 cm -1 (5.6–10.0  m) Complete analysis, J ≤ 23 Complete analysis, with some hot bands Perturbers: He et N 2 3 – Pentad 2200–3300 cm -1 (3.0–4.6  m) Complete analysis, J ≤ 18 Complete analysis, cold bands only Perturbers: He, Ar, N 2, O 2, CH 4 4 – Octad 3700–4800 cm -1 (2.0–2.7  m) Complete analysis, J ≤ 16 Complete analysis, cold bands only No analysis 5 – Tetradecad 5400–6300 cm -1 (1.6–1.9  m) Incomplete analysis, J ≤ 10 Partial analysis, cold bands only No analysis 6 – Icosad 6600–7700 cm -1 (1.3 – 1.5  m) Very partial analysis of 1 band among 20 No analysis Upper polyads > 7800 cm -1 (< 1.28  m) No analysis Windows (polyad far wings, all regions) No analysis

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 III. Application of the octad’s modeling

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22,  m region with ISO spectra 12 CH CH CH 3 D absorption coefficients calculated thanks to Dijon analyses Modeling of ISO (and Keck II) data, including haze profile

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 Surface albedo from CFHT/FTS spectra 22 2  m window

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 VLT/NACO spectrum of Huygens site (I) A. Negrão, M. Hirtzig, A. Coustenis, E. Gendron, P. Drossart, P. Rannou, M. Combes and V. Boudon, J. Geophys. Res. Planets 112, E02S92 (2007) VLT (NAOS/CONICA image) January 16, 2005 Huygens landing site Bright region Dark region NB: Measurement error (3  ) above 2.12  m is ± 27 %

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 VLT/NACO spectrum of Huygens site (II) A. Negrão, M. Hirtzig, A. Coustenis, E. Gendron, P. Drossart, P. Rannou, M. Combes and V. Boudon, J. Geophys. Res. Planets 112, E02S92 (2007) (Irwin = « band » model)

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 Discovery of a polar ethane cloud C. A. Griffith, P. Penteado, P. Rannou, R. Brown, V. Boudon, K. H. Baines, R. Clark, P. Drossart, B. Buratti, P. Nicholson, C. P. McKay, A. Coustenis, A. Negrão and R. Jaumann, Science 313, 1620–1622 (2006) Octad 2.11  m 2.17  m

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 IV. Perspectives for CH 4 spectroscopy

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 Spectroscopy of CH 4 : what next? Continue the global analysis approach Next goal: the Tetradecad (5400 – 6300 cm -1 ) Add new data (positions & intensities, hot bands) Windows (high J, far wings) New approches : Use of the ab initio potential energy surface to calculate the effective Hamiltionian and dipole moment (cf. work of Vl. G. Tyuterev, Reims, France) Statistical approach for hot bands

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 The triacontad Spectre : L. R. Brown (JPL/KPNO)

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 The STDS database Spherical Top Data System Molecular parameter database Calculation and analysis programs XTDS : Java interface

62th Ohio State University Symposium on Molecular Spectroscopy June 18–22, 2007 Post-doctoral postition available in Dijon! Modelling of methane absorption in the near infrared region and application to planetary atmospheres 12 months position Contact: NEW !