Seasonal variability of UTLS hydrocarbons observed from ACE and comparisons with WACCM Mijeong Park, William J. Randel, Louisa K. Emmons, and Douglas E.

Slides:

Advertisements

Similar presentations

Effect of increasing Asian Emissions and meteorological variability on the composition of the UT/LS J. E. Williams 1, P. F. J. van Velthoven 1, T. J. Schuck.

Advertisements

1 Overview of the Asian monsoon anticyclone and influence on the UTLS Bill Randel Atmospheric Chemistry Division NCAR Earth System Laboratory Thanks to:

Transport of aerosols into the UTLS and their impact on the Asian monsoon region as seen in a global model simulation S. Fadnavis, K. Semeniuk, L. Pozzoli,

Another hint for a changing stratospheric circulation after 2001 Harald Bönisch (1), Andreas Engel (1), Thomas Birner (2), Peter Hoor (3) (1)Institute.

Interpreting MLS Observations of the Variabilities of Tropical Upper Tropospheric O 3 and CO Chenxia Cai, Qinbin Li, Nathaniel Livesey and Jonathan Jiang.

Seasonal Variations in the Mixing Layer in the UTLS Dave MacKenzie University of Toronto GEOS-Chem Meeting April 2009.

The Atmosphere: Oxidizing Medium In Global Biogeochemical Cycles EARTH SURFACE Emission Reduced gas Oxidized gas/ aerosol Oxidation Uptake Reduction.

Li ZHANG, Hong LIAO, and Jianping LI Institute of Atmospheric Physics Chinese Academy of Sciences Impacts of Asian Summer Monsoon on Seasonal and Interannual.

REFERENCES Maria Val Martin 1 C. L. Heald 1, J.-F. Lamarque 2, S. Tilmes 2 and L. Emmons 2 1 Colorado State University 2 NCAR.

Global simulation of H 2 and HD with GEOS-CHEM Heather Price 1, Lyatt Jaeglé 1, Paul Quay 2, Andrew Rice 2, and Richard Gammon 2 University of Washington,

THE ATMOSPHERE: OXIDIZING MEDIUM IN GLOBAL BIOGEOCHEMICAL CYCLES

Introduction. A major focus of SCOUT-O3 is the tropics and a key issue here is testing how well existing global 3D models perform in this region. This.

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

Evaluating the Role of the CO 2 Source from CO Oxidation P. Suntharalingam Harvard University TRANSCOM Meeting, Tsukuba June 14-18, 2004 Collaborators.

(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.

Assimilation of EOS-Aura Data in GEOS-5: Evaluation of ozone in the Upper Troposphere - Lower Stratosphere K. Wargan, S. Pawson, M. Olsen, J. Witte, A.

CAM-chem model evaluation of the emissions and distributions of VSLS using TOGA VOC observations from CONTRAST and TORERO (in the lower and free troposphere.

ICDC7, Boulder, September 2005 CH 4 TOTAL COLUMNS FROM SCIAMACHY – COMPARISON WITH ATMOSPHERIC MODELS P. Bergamaschi 1, C. Frankenberg 2, J.F. Meirink.

Using GPS data to study the tropical tropopause Bill Randel National Center for Atmospheric Research Boulder, Colorado “You can observe a lot by just watching”

MIR OZONE ISSUES Horizontal (STE) and vertical transport (long life time in UTLS) Photochemical production by precursors (biomass burning, lightning,..)

Water and Methane in the Upper Troposphere and Stratosphere based on ACE-FTS Measurements Acknowledgements: The Canadian Space Agency (CSA) is the primary.

The Odin satellite Swedish led mini-satellite. Cooperation with Canada, Finland, France. Launched in February Design lifetime: 2 years. Circular.

Transport analysis and source attribution of the tropical CO seasonal and interannual variability in the UT/LS Junhua Liu and Jennifer Logan School of.

Trimodal distribution of ozone and water vapor in the UT/LS during boreal summer Timothy J Dunkerton NorthWest Research Associates WARM SEASON.

Stratospheric temperature trends from combined SSU, SABER and MLS measurements And comparisons to WACCM Bill Randel, Anne Smith and Cheng-Zhi Zou NCAR.

The effect of pyro-convective fires on the global troposphere: comparison of TOMCAT modelled fields with observations from ICARTT Sarah Monks Outline:

Figure (a-c). Latitude-height distribution of monthly mean ozone flux for the months of (a) January, (b) April and (c) July averaged over years 2000 to.

Stratosphere and Troposphere Exchange (STE) Above the Tibetan Plateau Wenshou Tian, Min Zhang, Hongying Tian Lanzhou University, Lanzhou, China Martyn.

IAC ETH, 26 October 2004 Sub-project: Effects of Solar irradiance variability on the atmosphere (steady-state sensitivity study) Progress report (final)

Asian Sources of Methane and Ethane Y. Xiao, D.J. Jacob, J. Wang, G.W. Sachse, D.R. Blake, D.G. Streets, et al. Atmospheric Chemistry Modeling Group Harvard.

Cargese UTLS ozone and ozone trends 1 UTLS ozone and ozone trends D. Fonteyn (My apologies) Given by W. Lahoz (My thanks)

The Extratropical UTLS: Observations, Concepts and Future Directions.

Kunming campaign, first in situ observation of water vapor and ozone in the UTLS during the Asian summer monsoon Jianchun BIAN, and Hongbin CHEN LAGEO,

First global view of the Extratropical Tropopause Transition Layer (ExTL) from the ACE-FTS Michaela I. Hegglin, University of Toronto, CA Chris Boone,

GPS tropical tropopause temperatures and stratospheric water vapor William Randel 1 and Aurélien Podglajen 2 1 NCAR Atmospheric Chemistry Division 2 Pierre.

A modelling study on trends and variability of the tropospheric chemical composition over the last 40 years S.Rast(1), M.G.Schultz(2) (1) Max Planck Institute.

Model evolution of a START08 observed tropospheric intrusion Dalon Stone, Kenneth Bowman, Cameron Homeyer - Texas A&M Laura Pan, Simone Tilmes, Doug Kinnison.

Constraints on the Production of Nitric Oxide by Lightning as Inferred from Satellite Observations Randall Martin Dalhousie University With contributions.

Measurement of the Long-term trends of Methanol (CH 3 OH) and Carbonyl Sulfide (OCS) Both methyl chloride and carbonyl sulfide have strong infrared bands.

Dynamical balances and tropical stratospheric upwelling Bill Randel and Rolando Garcia NCAR Thanks to: Qiang Fu, Andrew Gettelman, Rei Ueyama, Mike Wallace,

Vertical transport of chemical compounds from the surface to the UT/LS: What do we learn from SEAC 4 RS? Qing Liang 1 & Thomas Hanisco 2, Steve Wofsy 3,

Status of MOZART-2 Larry W. Horowitz GFDL/NOAA MOZART Workshop November 29, 2001.

Improved understanding of global tropospheric ozone integrating recent model developments Lu Hu With Daniel Jacob, Xiong Liu, Patrick.

REGIONAL/GLOBAL INTERACTIONS IN ATMOSPHERIC CHEMISTRY Greenhouse gases Halocarbons Ozone Aerosols Acids Nutrients Toxics SOURCE CONTINENT REGIONAL ISSUES:

UTLS Chemical Structure, ExTL Summary of the talks –Data sets –Coordinates –Thickness of the ExTL (tracers based) Outstanding questions Discussion.

04/12/011 The contribution of Earth degassing to the atmospheric sulfur budget By Hans-F. Graf, Baerbel Langmann, Johann Feichter From Chemical Geology.

A. Morrow, R. V. Martin, S. Sharma, L. Huang, A. Herber, R. Leaitch, J. Burkehart, S. M. Li, and P. Liu NETCARE Workshop November 4 th 2014 Understanding.

2007 INTEX Data Meeting The Vertical Distribution of HCl over the Pacific during INTEX-B Saewung Kim, Bob Stickel, Greg Huey, Melody Avery, Jack Dibb,

UTLS Workshop Boulder, Colorado October , 2009 UTLS Workshop Boulder, Colorado October , 2009 Characterizing the Seasonal Variation in Position.

(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.

Atmospheric Chemistry Experiment (ACE): Organic Molecules from Orbit Peter Bernath Department of Chemistry, University of York Heslington, York, UK.

Analysis of TES and MLS tropospheric data for ozone and CO in 2005 and 2006 using the GMI and GEOS-Chem global models. Jennifer A. Logan, Ray Nassar, Inna.

Picture: METEOSAT Oct 2000 Tropospheric O 3 budget of the South Atlantic region B. Sauvage, R. V. Martin, A. van Donkelaar, I. Folkins, X.Liu, P. Palmer,

Background ozone in surface air over the United States Arlene M. Fiore Daniel J. Jacob US EPA Workshop on Developing Criteria for the Chemistry and Physics.

Jean-François Lamarque, Peter Hess, Louisa Emmons, and John Gille Figure 2 Days since June CO Mixing ratio (ppbv) See description above. AsiaNorth.

Water vapor in the TTL and stratosphere Bill Randel Atmospheric Chemistry Division NCAR, Boulder, CO.

Analysis of Satellite Observations to Estimate Production of Nitrogen Oxides from Lightning Randall Martin Bastien Sauvage Ian Folkins Chris Sioris Chris.

27-28/10/2005IGBP-QUEST Fire Fast Track Initiative Workshop Inverse Modeling of CO Emissions Results for Biomass Burning Gabrielle Pétron National Center.

CCSM Working Group Meeting, February 2008

Static Stability in the Global UTLS Observations of Long-term Mean Structure and Variability using GPS Radio Occultation Data Kevin M. Grise David W.

Tropical Convective Transport and TTL Structure in the UM global model

A New Tropopause Definition for Use in Chemistry-Transport Models

Atmospheric modelling of the Laki eruption

Randall Martin Dalhousie University

Interannual variability of transport via the Asian Summer Monsoon

Transport pathways for Asian combustion outflow over the Pacific: Interannual and seasonal variations Hongyu Liu, Daniel J. Jacob, Isabelle Bey, Robert.

Aura Science Team meeting

Investigation of Tracer Species in HIPPO I

Effects of global change on U.S. ozone air quality

Simulations of the transport of idealized short-lived tracers

Presentation transcript:

Seasonal variability of UTLS hydrocarbons observed from ACE and comparisons with WACCM Mijeong Park, William J. Randel, Louisa K. Emmons, and Douglas E. Kinnison National Center for Atmospheric Research UTLS Workshop, Boulder, Oct , 2009

Useful as tracers in the UTLS Global satellite measurements (ACE-FTS) Chemistry transport model (WACCM3) Hydrocarbons – UTLS? CO C2H6C2H6 HCN sources Biomass Burning lifetime 2 months 1.5 months ~4 years (free atmosphere) 3 months (ocean contact) sinks OH OH, O( 1 D) ocean 2

ACE-FTS Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) is a high spectral resolution infrared Fourier Transform Spectrometer on SCISAT-1 ACE-FTS measures atmospheric absorption spectra ( cm -1 ) using solar occultation technique CO, HCN, C 2 H 6, C 2 H 2, OCS, CH 3 Cl, O 3, HNO 3, HCl,… Tropical sampling ~ 4 times/year FEB APR AUGOCT ACE-FTS Observations 3

Model Description 1)Whole Atmosphere Community Climate Model, version 3 (WACCM3) 2)Driven with GEOS5.1 analyzed meteorological fields 3)Period: 2004 – 2007 (4 years) 4)Resolution: 1.9°x2.5° (lat x lon); 88 levels (surface km) 5)Includes detailed tropospheric chemistry mechanism (125 species) 6)Emissions specific to each year 4

Carbon Monoxide (CO) ACE CO WACCM3 CO DJF JJA Zonal mean climatology (4 years of data) Good agreement between ACE and WACCM3 min max min tropopause 5

Ethane (C 2 H 6 ) WACCM3 C 2 H 6 ACE C 2 H 6 DJF JJA Overall agreement, but WACCM3 is higher in the lower stratosphere (convection?) Zonal mean climatology 6

CO – Horizontal Map WACCM3 CO 147 hPa ACE CO 13.5 km DJF JJA max (Africa, America, Maritime continent) max (Asian Monsoon) max 7

C 2 H 6 – Horizontal Map ACE C 2 H km WACCM3 C 2 H hPa DJFJJA Reasonable agreement except higher noise in ACE max 8

HCN – Horizontal Map WACCM3 HCN 147 hPa ACE HCN 13.5 km DJF JJA max (Africa – DJF, Asian Monsoon – JJA) min (ocean) max min 9 tropical minimum: air with recent ocean contact

Asian monsoon anticyclone as a pathway to the stratosphere 10 monsoon maximum minimum for air with recent ocean contact tropical min transport to stratosphere via monsoon ACE HCN Climatology (JJA, 16.5 km) ACE HCN (JJA)

Hydrogen Cyanide (HCN) WACCM3 HCN (JJA) (Summer, JJA) Similar structure, but higher values in WACCM3 ACE HCN (JJA)

MLS HCN - Time vs. Lat WACCM3 HCN (16-24 km) MLS HCN (100 hPa) + ACE HCN (16-24 km) Maxima in NH summer subtropics, linked to Asian summer monsoon 12

Time Series (15°S-15°N) CO 17.5 km C 2 H km HCN 17.5 km annual cycle – right above the tropopause WACCM3 has very good agreement with ACE annual cycle interannual variability (2 year cycle?) 13

Annual Cycle - UTLS MLS CO mean d(lnCO)/dz CO Annual Cycle Amp Randel et al. (2007) CO annual cycle - driven by the seasonal variation in upwelling acting on the strong background vertical gradient in CO 14

CO & HCN – annual cycle? dCO/dz strong vertical gradient CO Annual Cycle strong annual cycle HCN Annual Cycle dHCN/dz CO HCN WACCM3 climatology vertical gradient normalized annual cycle amplitude 15

Tracer-tracer Correlations DJFJJA HCN C2H6C2H6 high altitude ( km) low altitude ( km) high correlation (annual cycle) no correlation 16

Summary 1.Seasonal variability of hydrocarbons in the tropical UTLS is analyzed using the ACE-FTS observations and WACCM3. 2.WACCM3 simulates seasonal cycles in the UTLS reasonably well. 3.Strong annual cycle is observed for the chemical tracers with strong vertical gradient (CO and C 2 H 6 ) right above the tropical tropopause. 1.HCN is a unique tracer with minimum in tropical upper troposphere. Transport to stratosphere through Asian summer monsoon circulation. 17

HCN Chemistry Production Processes (i.e., Emissions)… HCN emissions were estimated by scaling CO emissions from biomass burning and biofuel combustion using HCN/CO = mol/mol. Biofuel combustion emissions are constant year-round (primarily domestic heating and cooking). Biomass burning emissions are monthly averages over from the GFED-v2 inventory [Van der Werf et al., ACP, 2006]. Loss Processes… HCN + OH => products. [Strekowski et al, 2001] HCN + O( 1 D) => products [Strekowski et al, 2001] Wet deposition in the troposphere. Dry deposition over ocean surface. 18

Seasonal cycle of HCN from ACE-FTS HCN source: biomass burning HCN lifetime: ~4 years in free atmosphere, but sink from contact with ocean