Chemical Sources and Sinks of OCS in the Lower Atmosphere of Venus Yuk L. Yung M. C. Liang, California Institute of Technology EGU.

Slides:

Advertisements

Similar presentations

Atmospheric chemistry

Advertisements

Reaction Energy and Reaction Kinetics

Photochemistry in the Atmospheres of Hot Jupiters Yuk L. Yung 1, Mao-Chang Liang 2, Michael Line 1 and Giovanna Tinetti 3 1 Division of Geological and.

Carbon Deposition in Heterogeneous Catalysis

The Stratospheric Chemistry and The Ozone Layer

Solving Equations = 4x – 5(6x – 10) -132 = 4x – 30x = -26x = -26x 7 = x.

Oxygen: Stratosphere, Mesosphere and Thermosphere Part-3 Chemical Rate Equations Ozone Density vs. Altitude Stratospheric Heating Thermal Conductivity.

Nitrous Oxide: Stratospheric Isotopic Composition and Tropospheric Impact Y. L. Yung, J. Weibel* and R. L. Shia Divisions of Geological and Planetary Sciences.

Y. L. Yung, R. L. Shia, Y. C. Chen, C. Y. Leung Divisions of Geological and Planetary Sciecnes, California Institute of Technology Mao-Chang Liang Research.

Vertically constrained CO 2 retrievals from TCCON Measurements Vertically constrained CO 2 retrievals from TCCON Measurements Le Kuai 1, Brain Connor 2,

Channel Selection for CO 2 Retrieval Using Near Infrared Measurements EGU 2009 Le Kuai 1, Vijay Natraj 1, Run-Lie Shia 1, Susan Kulawik 2, Kevin Bowman.

Adapting GEOS_CHEM to Mars Photochemisty Huiqun Wang 1 Kelly Chance 1 Daniel Jacob 2 Mark Richardson 3 Michael Mischna 4 1 Center for Astrophysics (CFA)

Modeling the Distribution of H 2 O and HDO in the upper atmosphere of Venus Mao-Chang Liang Research Center for Environmental Changes, Academia Sinica.

Distribution of H 2 O and SO 2 in the atmosphere of Venus Yung Y. 1, Zhang X. 1, Liang M.-C. 2 and Parkinson C. 3 1 California Institute of Technology.

CO 2 in the middle troposphere Chang-Yu Ting 1, Mao-Chang Liang 1, Xun Jiang 2, and Yuk L. Yung 3 ¤ Abstract Measurements of CO 2 in the middle troposphere.

Modeling the Distribution of H 2 O and HDO in the upper atmosphere of Venus Mao-Chang Liang Research Center for Environmental Changes, Academia Sinica.

Modeling Carbon Species in the Atmosphere of Neptune and Comparison with Spitzer Observations Xi Zhang 1, Mao-Chang Liang 2, Daniel Feldman 1, Julianne.

METO 621 Lesson 21. The Stratosphere We will now consider the chemistry of the troposphere and stratosphere. There are two reasons why we can separate.

METO 637 Lesson 8. Perturbations of the stratosphere Testing our knowledge of the stratosphere comes from a comparison of the measured and predicted concentrations.

Modeling of OCS in the Lower Atmosphere of Venus Yuk L. Yung M. C. Liang, X. Jiang, C. Lee, B. Bezard and E. Marq California Institute of Technology

National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Pasadena, California Atmospheric Infrared Sounder.

1 Non-stationary Synchronization of Equatorial QBO with SAO in Observation and Model 1. Division of Geological and Planetary Sciences, California Institute.

Next Two Weeks—Stratospheric Chemistry Mid-latitude Ozone Chemistry (and depletion) Polar Ozone Destruction (the Ozone Hole) READING: Chapter 10 of text.

1 Interannual Variability in Stratospheric Ozone Xun Jiang Advisor: Yuk L. Yung Department of Environmental Science and Engineering California Institute.

1 Two-Dimensional Chemistry Transport Model 11/16/2006.

Titan's photochemical model: neutral species L.M. Lara IAA-CSIC Granada, Spain.

METO 637 Lesson 13. Air Pollution The Troposphere In the Stratosphere we had high energy photons so that oxygen atoms and ozone dominated the chemistry.

METO 637 Lesson 20. Planetary Atmospheres The existence of an atmosphere depends on three factors: (1) How close the planet is to the sun – basically.

This Week—Tropospheric Chemistry READING: Chapter 11 of text Tropospheric Chemistry Data Set Analysis.

Deuterated Methane and Ethane in the Atmosphere of Jupiter Christopher D. Parkinson 1,2, Anthony Y.-T. Lee 1, Yuk L. Yung 1, and David Crisp 2 1 Division.

Influence of the Brewer-Dobson Circulation on the Middle/Upper Tropospheric O 3 Abstract Lower Stratosphere Observations Models

(a)(b)(c) Simulation of upper troposphere CO 2 from two-dimensional and three-dimensional models Xun Jiang 1, Runlie Shia 2, Qinbin Li 1, Moustafa T Chahine.

Simple Chemical modeling of ozone sensitivity

Photochemical Distribution of Venusian Sulphur and Halogen Species AND Why Vulcanism cannot be the source for Venusian SO 2 above 80km C. D. Parkinson.

New Insights into the Atmospheric Chemistry of Venus from Venus Express Yuk L. Yung Caltech GISS Seminar, Mar

Chemistry of Venus’ Atmosphere Vladimir A. Krasnopolsky Photochemical model for km Photochemical model for km Chemical kinetic model for.

Response of Middle Atmospheric Hydroxyl Radical to the 27-day Solar Forcing King-Fai Li 1, Qiong Zhang 2, Shuhui Wang 3, Yuk L. Yung 2, and Stanley P.

Photochemical Control of the Distribution of Venusian Water and Comparison to Venus Express SOIR Observations Christopher D. Parkinson 1, Yuk L. Yung 2,

Liang and Yung, Isotopic Constraints on the Global Budget and Trend of Atmospheric Nitrous Oxide Isotopic Constraints on the Global Budget and Trend of.

TROPOSPHERIC OZONE AND OXIDANT CHEMISTRY Troposphere Stratosphere: 90% of total The many faces of atmospheric ozone: In stratosphere: UV shield In middle/upper.

Y. L. Yung, R. L. Shia Divisions of Geological and Planetary Sciecnes, California Institute of Technology Mao-Chang Liang Research Center for Environmental.

Summary  We have implemented numerically stable, continuous method of treating condensation on to grains in Titan’s atmosphere.  Our model can establish.

Camp et al. (2003) illustrated that two leading modes of tropical total ozone variability exhibit structrures of the QBO and the solar cycle. Figure (1)

Iodine Chemistry And It’s Role In Ozone Depletion PRESENTED BY: Farhana Yasmin.

 We also investigated the vertical cross section of the vertical pressure velocity (dP/dt) across 70°W to 10°E averaged over 20°S-5°S from December to.

Mao-Chang Liang 1,2, Claire Newman 3, Yuk L. Yung 3 1 Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan 2 Graduate Institute of.

Stratospheric Circulation of Jupiter Xi Zhang 1,2 R. L. Shia 2, A. P. Showman 1, and Y. L. Yung 2 1 LPL, University of Arizona, United States 2 California.

Study on NO x lifetime in chemistry transport model Ran Yin.

Climatic implications of changes in O 3 Loretta J. Mickley, Daniel J. Jacob Harvard University David Rind Goddard Institute for Space Studies How well.

Modeling of the 11-year Solar Cycle Response in Upper Atmospheric Hydroxyl Radicals Yuk Yung ESE.

Near-Infrared Photochemistry of Atmospheric Nitrites Paul Wennberg, Coleen Roehl, Geoff Blake, and Sergey Nizkorodov California Institute of Technology.

III/1 Atmospheric transport and chemistry lecture I.Introduction II.Fundamental concepts in atmospheric dynamics: Brewer-Dobson circulation and waves III.Radiative.

Liang and Yung, Isotopic Constraints on the Global Budget and Trend of Atmospheric Nitrous Oxide Isotopic Constraints on the Global Budget and Trend of.

(a)(b)(c) Simulation of upper troposphere CO 2 from two-dimensional and three-dimensional models Xun Jiang 1, Runlie Shia 2, Qinbin Li 1, Moustafa T Chahine.

Results We first best-fit the zonal wind and temperature simulated in the 3D PlanetWRF using the semi- analytic 2D model with,,, and. See Fig 2. The similarity.

National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Pasadena, California Atmospheric Infrared Sounder.

Variability of CO 2 From Satellite Retrievals and Model Simulations Xun Jiang 1, David Crisp 2, Edward T. Olsen 2, Susan S. Kulawik 2, Charles E. Miller.

Night OH in the Mesosphere of Venus and Earth Christopher Parkinson Dept. Atmospheric, Oceanic, and Space Sciences University of Michigan F. Mills, M.

Biosphere Hydrosphere Lithosphere Atmosphere. Convection Currents Drive the Earth’s Movements Convection currents drive movements within the lithosphere,

ATS 621 Fall 2012 Lecture 9.

D. E. Shemansky† , J. A. Kammer ‡ , X. Zhang ‡ & Y. L. Yung‡

Atmospheric Radiation

ATOC 4720 class37 1. The vertically averaged divergence

Variability of CO2 From Satellite Retrievals and Model Simulations

الاحتراق.

Connecting Catalytic Chemistry to External Particle Conditions via CFD Anthony G. Dixon, Department of Chemical Engineering, Worcester Polytechnic Institute.

Variability of CO2 From Satellite Retrievals and Model Simulations

Connecting Catalytic Chemistry to External Particle Conditions via CFD Anthony G. Dixon, Department of Chemical Engineering, Worcester Polytechnic Institute.

Ge103 Lecture May Yuk Yung x6940;

Climatic implications of changes in O3

Presentation transcript:

Chemical Sources and Sinks of OCS in the Lower Atmosphere of Venus Yuk L. Yung M. C. Liang, California Institute of Technology EGU Meeting 2008

Important Processes in the Atmosphere of Venus Catalytic Chemical Cycles Heterogeneous Chemistry Middle Atmosphere Circulation OCS as tracers of chemistry and dynamics

Venus model description Two-dimensional Caltech/JPL KINETICS chemical transport model Solve continuity equation for 24 species with ~200 chemical reactions (subset of Mills’)

Role of circulation Affect the upward flux of OCS from the surface Reduce OCS abundances at high latitudes

S2S2 OCS S3S3 S4S4 S8S8 hv S S CO S4S4 S2S2 S S3S3 S4S4 hvS

Conclusions Scale height of OCS cannot be explained by photolysis alone Photosensitized dissociation of OCS via polysulfur photochemistry Integrated destruction rate of OCS is 23,000 Tg- S/yr [Earth = 10 Tg-S/yr]

Acknowledgements NASA and ESA P. Drossart R. L. Shia K. Baines D. Crisp C. Lee X. Jiang B. Bezard E. Marq

Not Used