The Extratropical UTLS:
Observations, Concepts and Future Directions

9:00 a.m.

Welcome

Workshop Introduction

Session 1:

UTLS Dynamical Structure, Tropopause

Chair: Paul Konopka

9:30 a.m.

CCMval overview

Andrew Gettelman, M. Hegglin PPT

10:00 a.m.

Global observations in the UTLS region with GPS radio occultation data and MOZAIC aircraft measurements

Torsten Schmidt, J-P. Cammas, A. Haser, J. Wickert, S. Heise PPT

10:15 a.m.

The tropopause inversion layer and its link to the mixing layer

Anne Kunz, P. Konopka, R. Mueller, L. Pan, C. Schiller, F. Rohrer PDF

10:30 a.m.

Break

11:00 a.m.

Static stability in the extratropical UTLS: Observations of long-term mean structure and variability using GPS radio occultation data

Kevin Grise, D. Thompson, T. Birner PPT

11:15 a.m.

Double tropopauses during idealized baroclinic life cycles

Shuguang Wang, L. Polvani PPT

11:30 a.m.

Residual circulation and tropopause structure

Thomas Birner PDF

11:45 a.m.

Global estimates of gravity wave parameters in the UTLS from the COSMIC/CHAMP GPS RO temperature retrievals

Ling Wang, J. Alexander PPT

12:00 p.m. –

2:30 p.m.

Lunch (provided in Center Green Lobby) &

Poster Session

Session 2

UTLS Chemical Structure, ExTL

Chair: Andrew Dessler

2:30 p.m.

UTLS tracer structure/transport overview

Peter Hoor PPT, L. Pan PPTX

3:00 p.m.

A global view on UTLS tracer distributions from the Canadian

ACE-FTS satellite instrument

Michaela Hegglin, G. Manney, C. Boone, K. Walker PPT

3:15 p.m.

Characterizing the seasonal variation in position and depth of the mixing layer in the UTLS based on observations from the ACE-FTS and TES satellite instruments

Dave MacKenzie, D. Jones, M. Hegglin, J. Worden, C. Boone, K. Walker, P. Bernath PPT

3:30 p.m.

Stratospheric and tropospheric jet characterization and analyses of satellite and aircraft data in the context of jet structure and evolution

Gloria Manney, M. Hegglin, W. Daffer, M. Santee, K. Walker, P. Bernath, J. Gille, N. Livesey, B. Nardi, S. Pawson PPT

3:45 p.m.

Break

4:00 p.m.

Characterization of the composition, structure, and seasonal variation of the mixing layer above the extratropical tropopause as revealed by MOZAIC measurements

Jerome Brioude, J-P. Cammas, O. Cooper, P. Nedelec PPT

4:15 p.m.

On the structure of the extratropical transition layer from in-situ observations

Ignacio Pisso, K. Law, F. Fierli, F. J'egou, P. Hoor, E. Palazzi, J. Ajtic, P. Haynes PDF

4:30 p.m.

On the use of equivalent latitude/theta coordinates in UTLS studies

Laura Pan PPTX

4:45 p.m.

A new tropopause definition for use in chemistry-transport models

Jessica Neu, M. Prather, X. Zhu PPT

Tuesday, October 20th

9:00 a.m.

Discussion of previous day Session 1 PPT Session 2 PPT

Session 3:

Transport & STE

Chair a.m.: Thomas Birner.   Chair p.m.: Eric Ray.

9:45 a.m.

Dynamics overview

Peter Haynes PPT

10:15 a.m.

START08 overview

Laura Pan PPTX

10:30 a.m.

Break

11:00 a.m.

Seasonal difference of UTLS exchange processes between spring and summer in the Sub-Tropics and Polar Region based on START08 and POLARCAT aircraft campaigns

Simone Tilmes, L. Pan, L. Emmons, D. Kinnison, H. Schlager PPT

11:15 a.m.

Transport timescales and surface source regions of UTLS air from START-08 and HIPPO tracer correlations

Eric Ray, F. Moore, K. Rosenlof PPTX

11:30 a.m.

Transport of air from the tropical upper troposphere into the extratropical lower stratosphere

Ken Bowman PPT
(Please contact Ken for movie files.)

11:45 a.m.

Identification of transport pathways and location of mixing in the extratropical tropopause region using CO-O3 correlations and Lagrangian model simulations

Baerbel Vogel, L. Pan, P. Konopka, G. Guenther, R. Mueller, T. Campos, W. Hall, I. Pollack, A. Weinheimer, J. Wei, E. Atlas, K. Bowman PDF

12:00 p.m.

Model evolution of a mid-latitude tropospheric intrusion

Dalon Stone, L. Pan, K. Bowman, S. Tilmes, D. Kinnison, E. Atlas PPTX MOV

12:15 p.m.

Aircraft measurements and numerical simulations of gravity waves in the extratropical UTLS region during the START08 field campaign

Meng Zhang, F. Zhang, G. Ko, K. Bowman, L. Pan, E. Atlas PPTX

12:30 p.m.

Lunch

2:00 p.m.

STE from ozonesonde and radar observed tropopause jump

David Tarasick, W. Hocking, T. Carey-Smith PPT

2:15 p.m.

Potential vorticity as a barrier to exchange between the troposphere and lowermost stratosphere

John Gille, S. Karol, V. Yudin, D. Kinnison, B. Nardi

2:30 p.m.

Satellite observations and simulation of subvortex processing and related Upper Troposphere/Lower Stratosphere (UTLS) Transport

Michelle Santee, G. Manney, W. Read, N. Livesey, R. Harwood, K. Walker PPT

2:45 p.m.

MLS observations of fire smoke in the lower stratosphere

Steven Massie PDF

3:00 p.m.

Lagrangian modeling of mixing and mixed layer

Paul Konopka, L. Pan PDF

3:15 p.m.

Break

3:30 p.m.

Mixing processes and exchanges across the tropical and subtropical UTLS

Ronan James, B. Legras PDF

3:45 p.m.

Transport regimes and the distribution of CO and H2O in the UTLS 

Peter Hoor, H. Wernli PPT

4:00 p.m.

Transport and mixing in the extratropical tropopause region in a high vertical resolution GCM

Kazuyuki Miyazaki, S. Watanabe, Y. Kawatani, Y. Tomikawa, M. Takahashi, K. Sato PPT

4:15 p.m.

Extratropical stratosphere-troposphere exchange in an AGCM with the horizontal grid size of 20 km

Ryo Mizuta, H. Yoshimura PPT

4:30 p.m.

Nonlinear modulation of O3 and CO induced by mountain waves in the UTLS during TREX

Mohamed Moustaoui, A. Mahalov, H. Teitelbaum, V. Grubisic PPT

4:45 p.m.

Modeling study of thunderstorm effects on the upper troposphere during the early stages of the 2006 North America Monsoon

Mary Barth, J. Lee, C. Boxe, J. Worden, A. Hodzic PPT

5:00 p.m.

The impact of wind shear on the cross-tropopause transport of water vapor by deep convective storms

Pao Wang

5:15 p.m. –

7:00 p.m.

Poster Session & Reception

Wednesday, October 21st

9:00 a.m.

Discussion of previous day PPT

Session 4:

Chemical and Microphysical Distributions

Chair: David Tarasick

9:30 a.m.

CARIBIC overview

Andreas Zahn PPT

10:00 a.m.

Ability of global chemistry models to reproduce large scale UTLS features of CO, CH4, CO2 and oxygenated compounds assessed by comparison to airborne CARIBIC data

Frans Alkemade, S. Szopa, T. Elias, P. van Velthoven, A. Zahn, T. Schuck, C. Brenninkmeijer, CARIBIC team PPT

10:15 a.m.

Seasonal distribution and transport of CO2 in the tropopause region based on frequent observations in the CONTRAIL project

Yousuke Sawa, T. Machida, H. Matsueda PPT

10:30 a.m.

Break

11:00 a.m.

Organic trace gases in the extratropical UTLS

Elliot Atlas, L. Pan, K. Bowman, S. Tilmes, D. Kinnison, D. Stone, S. Schauffler, X. Zhu, L. Pope, R. Lueb PPTX

11:15 a.m.

Seasonal variability of UTLS hydrocarbons observed from ACE and comparisons with WACCM

Mijeong Park, W. Randel, L. Emmons, D. Kinnison PPTX

11:30 a.m.

Observations of cirrus clouds and trace gases in the extratropical UTLS by CRISTA-NF

Martin Riese, K. Weigel, R. Spang, P. Preusse, L. Hoffmann, F. Olschewski, F. Stroh PPT

11:45 a.m.

Clouds and water vapor in the northern hemisphere summertime stratosphere

Andrew Dessler PDF

12:00 p.m.

Water vapour in the extratropical UTLS as an indicator of dynamical processes

Sergey Khaykin, A. Lukyanov, V. Yushkov, R. Kivi , M. Maturilli PPT

12:15 p.m.

UTLS ozone and water vapor measurements in Kunming

Jianchun Bian PPT

12:30 p.m.

Lunch

Session 5:

Long-Term Variability and Trends

Chair: Michaela Hegglin

2:00 p.m.

MOZAIC overview

Valerie Thouret PPT

2:30 p.m.

Long-term ozone changes in UTLS in the northern hemisphere

Johannes Staehelin, C. Poberaj PPT

2:45 p.m.

Anthropogenic influence on stratospheric aerosol composition and trends through the Asian monsoon: observations, modeling and impact

Susan Solomon, J-F. Lamarque, R. Portmann, T. Deshler, D. Hofmann, S. Smith, J. Liley, T. Trickl PPTX

3:00 p.m.

Impact of changes in climate and halocarbons on recent lower stratosphere ozone and temperature trends

Jean-François Lamarque, S. Solomon PPT

3:15 p.m.

The dynamical signal in stratospheric temperatures from satellites, 1979-2005: Long-term changes and the pole-tropics out-of-phase relationship

Paul Young, S. Solomon, D. Thompson, S. Sherwood, Q. Fu PPT

3:30 p.m.

Break

3:45 p.m.

Changes in the tropical belt and their effect on trace gas distributions in the UTLS

Sean Davis, K. Rosenlof PPT

4:00 p.m.

Tropical broadening vs tropopause rising

Juan Añel, A. Gettelman, J. Castanheira PDF

4:15 p.m.

Broadening of the tropical UTLS in chemistry-climate models

Andrew Gettelman, CCMVal Model PIs PPT

4:30 p.m.

Another hint for a changing stratospheric circulation after 2001

Harald Boenisch, A. Engel, P. Hoor PPT

Thursday, October 22nd

9:00 a.m.

Discussion of previous day

Session 6:

Future Missions

Chair: Elliot Atlas

9:45 a.m.

Deep Convective Clouds and Chemistry (DC3): Description of the proposed field campaign and what we can expect to see

Mary Barth, C. Cantell, B. Brune, S. Rutledge, B. Skamarock, M. Weisman

10:00 a.m.

PREMIER: A proposed ESA earth explorer mission to observe atmospheric composition for a better understanding of chemistry-climate interactions

Martin Riese on behalf of the PREMIER Mission Advisory Group

10:15 a.m.

An overview of future NASA airborne science field experiments

Eric Jensen

10:30 a. m.

Break

Workshop Summary

10:45 a.m.

Summary of all sessions: Lessons learned - main questions

11:45 a.m.

Next Steps

12:00 p.m.

Adjourn

POSTERS

1

Thermal stratification versus water vapor content in the upper troposphere PDF

Antonio Ferreira, J. M. Castanheira, L. Gimeno

2

Identifying the tropopause using high-resolution sounding data

Cameron Homeyer, K. Bowman, L. Pan

3

Impact of the novel HNO3-forming channel on tropospheric O3 via WRF-Chem over the United States during the 2006 North American Monsoon

Christopher Boxe, W. Ford, J. Worden

4

A fine structure of atmospheric (static) stability near the tropopause with the Equatorial Atmosphere Radar (EAR) at Kototabang, West Sumatera

Eddy Hermawan

5

Attributes of the Nimbus 7 LIMS Version 6 dataset for studies of constituent transport in the lower stratosphere

Ellis Remsberg, M. Natarajan, D. Fairlie, G. Lingenfelser

6

Sounding the upper troposphere-lower stratosphere using a tomographic approach PDF

Enzo Papandrea, E. Arnone, E. Castelli

7

A comparison of dynamical and thermal tropopause pressure from ERA-40 reanalysis data PDF

Juan A. Añel, G. Sáenz, M. Chamorro, D. Barriopedro, A. Garcia

8

MLS/START08 comparisons and large-scale context for START08 from MLS and ACE-FTS satellite data PDF

Gloria Manney, M. Hegglin, W. Daffer, R. Fuller, E. Atlas, K. Bowman, L. Pan, S. Wofsy, R-S. Gao, A. Weinheimer, T. Campos, D. Hurst, N. Livesey, M. Santee, K. Walker

9

Quantifying the ozone distribution and variability in the UTLS in relation to thermal and circulation features. PDF

John Merrill

10

Observed vertical distribution of tropospheric ozone during the Asian summertime monsoon

John Worden, D. Jones, J. Liu, M. Parrington, K. Bowman, I. Stajner, R. Beer, J. Jiang, V. Thouret, S. Kulawik , J-L. Li , S. Verma H. Worden

11

Increase of upper troposphere/lower stratosphere wave baroclinicity during the second half of the 20th century PDF

Juan Añel, J. Castanheira, C. Marques, J. Antuña, M. Liberato, L. de la Torre,

L. Gimeno

12

TRODIM Project and the PATXI Dataset

Juan Añel, L. de la Torre, L. Gimeno, R. Garcia-Herrera, J. García, P. Ribera, Ã. Redaño PDF

13

Equatorial atmospheric waves in the UTLS forced by latent heating estimated from TRMM rain rates

Jung-Hee Ryu, J. Alexander, D. Ortland

14

Interannual variability of ozone in the winter lower stratosphere and the relationship to laminar transport and mixing

Mark Olsen, A. Douglass, M. Schoeberl, J. Rodriquez, Y.Yoshida

15

Statistical analysis of double tropopause events utilizing HIRDLS temperature data PDF

Tanya Phillips, J. Gille

16

Upper-tropospheric ozone variability as observed by the Aura Microwave Limb Sounder

Nathaniel Livesey, M. Santee, J. Logan, W. Read, L. Froidevaux

17

The tropopause inversion layer: New observations, new theories PDF

Neil Tandon, W. Randel, L. Pan, S-W. Son, L. Polvani

18

Simulation of the atmospheric tape recorder signal in HCN PDF

R. Pommrich, J-U. Grooβ, P. Konopka, G. Gūnther, A. Heil, M. Schultz, H-C. Pumphrey, K. Walker, M. Riese, R. Mϋller

19

Interannual variability of the water vapor transport at 100 hPa induced by the large scale circulation and convective processes

Ronan James, B. Legras, M. Bonazzola, K. Surbled, S. Fueglistaler

20

Finite-amplitude wave activity diagnostic and an eddy-free reference state of general circulation in the troposphere and stratosphere PDF

Noboru Nakamura, A. Solomon

21

The summer polar tropopause inversion layer PDF

William Randel

22

Radar reflectivity as a proxy for convective detrainment in the UTLS

Gretchen Mullendore, A. Homann, J. Siegel

23

Nitrogen oxides in the UTLS: Observations from CARIBIC PDF

Helmut Ziereis, G. Stratmann, H. Schlager, P. Stock, M. Scheibe, U. Schumann,

C.A.M. Brenninkmeijer, F. Slemr, A. Zahn, M. Hermann

24

Transport in the extratropical UTLS as revealed by chemical tracers during the START08 campaign PDF

Jasna Pittman, L. Pan