A U.S. - Japan Bilateral Workshop on the Tropical Tropopause Layer: State of the Current Science and Future Observational Needs

15 - 19 October 2012


Home Page
Workshop Info
Poster Session Info
Workshop Flier
Workshop Organizers
Travel Info






The final meeting program can be downloaded now.

A preliminary version of the agenda is below.


Version: October 3, 2012


• TTL Overview / Radiative Transfer
• Cirrus clouds and Convection in the TTL
• TTL Transport & Wave processes
• Trace Species and Chemistry (besides water)
• Water vapor
• Stratospheric Dynamics (including waves)
• Simulations (idealized → global)
• Satellite Observations
• Ground Based Observations
• In-Situ Aircraft Observations
• Data assimilation

MONDAY: TTL Structure, past observations, historical perspective

08:30 Bus leaves hotel for East West Center

09:00 Introduction and logistics, motivation and scope of meeting.
09:30 Introduction of participants
10:15 Group Photo & Break
10:45 TTL Overview / Radiative Transfer (Andrew Gettelman)

11:45 LUNCH

13:00 Cirrus Clouds and Convection in the TTL (Leonard Pfister)
14:00 Water Vapor (William Randel)
15:00 Break
15:30 TTL Transport & Wave Processes (Masatomo Fujiwara)
16:30 Trace Species and Chemistry-Besides Water (Anne Thompson)

17:45 Bus back to hotel

TUESDAY: Critical outstanding TTL questions

08:30 Bus leaves hotel for East West Center

09:00 Stratospheric Dynamics (Including Waves) Joan Alexander
10:00 In-Situ Aircraft Observations Karen Rosenlof
11:00 Break
11:30 Ground Based Observations Fumio Hasebe/Takashi Shibata

12:30 LUNCH

13:30 Satellite Observations Masato Shiotani
14:30 Simulations (Idealized to Global) Eric Jensen
15:30 Break
16:00 Data Assimilation Kazuyuki Miyazaki
17:00 Poster Introductions
17:30 Poster Session / Reception

19:45 Bus back to hotel.

WEDNESDAY: Observational plans for 2012-2015, Discussion

08:30 Bus leaves hotel for East West Center

09:00 Presentation of science questions Organizing Committee

Presentations by representatives for individual observational campaigns. Each speaker will be asked to be sure to present (a) science questions, (b) key instruments and (c) locations and timing. Each Presentation is 10 - 15 min.

09:15-10:30 Ongoing Project Focus

• GRUAN Holger Vömel (Remotely)
• NOAA Dale Hurst
• Ticosonde Henry Selkirk
• SHADOZ Anne Thompson
• SOWER Fumio Hasebe

10:30 Break

11:00-12:20 Campaign Focus Focus

• ATTREX Eric Jensen
• BATTREX Gary Morris/ Joan Alexander
• CAST-Aircraft Neil Harris (10 min)
• CAST-Sonde Geraint Vaughan (10 min)
• CONTRAST Laura Pan
• AerOClim Markus Rex

12:20 Adjourn formal session

12:30 Bus back to hotel.


Free for most participants. Take the 12:30 bus back to the hotel.
For students: prepare synthesis presentations for Thursday in 3 small groups. More information to be presented at the workshop.

13:30: STUDENT PROJECT – Map science questions to campaigns.
(a) Pull out science questions: what overlaps from presentations (organizers help pull together)
(b) Put campaigns by each question: which are common

17:00 Students walk/take cab back to hotel.

THURSDAY: TTL measurements and modeling mapped to questions

08:30 Bus leaves hotel for East West Center

9:00-12.30: Current TTL science topics. (3 hours of short talks, plus 0.5 hour break)

List of Talks:

09:00 Thomas Birner: Quantifying the deep convective temperature signal within the tropical tropopause layer (TTL)

09:20 Noriyuki Nishi: Cloud-top height dataset by geostationary satellite split window measurements trained with CLOUDSAT data

09:40 Masahiko Hayashi: Volatility and composition of TTL aerosols by balloon-borne in-situ observation

10:00 Break

10:30 Nawo Eguchi, Kodera & Nasuno: Impact of abrupt stratospheric dynamical change on Tropical Tropopause Layer

10:50 Kensaku Shimizu: Development of new HYdorometer VIdeo Sonde (HYVIS) system for ice cloud observation in TTL region

11:10 Jianchun Bian: In situ water vapor and ozone measurements in Lhasa and Kunming during the Asian summer monsoon

11:30 Karen Rosenlof: The NOAA H2O and O3 data base

11:50 Shin-ya Ogino: Ozone variations over the Northern subtropical region revealed by ozonesonde observations in Hanoi

12:10 Laura Pan: Identification of TTL boundaries using the ozone-water vapor relationship

12:30 LUNCH

13:30-14:30 Summary of science questions from Monday-Wednesday - Talks led by student groups. 20 min per group on science topics.
14:30-15:00: Discussion of science questions
15:00-15:30 Break
15:30-16:30 Campaign Logistics mapping presentation by students. Discussion
16:30-17:30 - Plans for coordinated observations.

Conference Dinner

FRIDAY: Coordination and planning. Action items and future work

08:30 Bus leaves hotel for East West Center

09:00 Discussion of synergies and where we can work together (led by Organizers)
10:30 Break
11:00 Discussion of observations/Models and gaps – Discussion – What’s missing in current plans? Do campaign proposals address the missing elements?
11:30 Review science questions, and how to use coordinated observations
12:00 Action Items : common activities, critical planning needed, etc.
12:30 End workshop

12:45 Bus back to hotel.

Afternoon: Organizing committee drafts white paper.



© Copyright 2012 Dr. Gary Morris. All rights reserved.

Valparaiso University Home Page ~ Dept. of Physics & Astronomomy Home Page