Strateole 2 workshop
March 18-19, 2015
Location : Amphitheater of ‘Institut de Physique du Globe de Paris’, 1 rue Jussieu, Paris
(metro station : M10 Jussieu)
March 18
Welcome and introductive presentation
9:00 – 9:10
Welcome
9:10 – 9:25
Strateole 2 status and schedule (Ph. Cocquerez)
9:25 – 9:50
Strateole 2 balloon and system (S. Venel)
9:50 – 10:15 Strateole 2 science and workshop objectives (A. Hertzog)
10:15 – 10:30 Discussion on Strateole 2 implementation and workshop objectives
10:30 – 10:50 Coffee break
Transport session
10:50 – 11:10 Overview talk
Processes affecting variability of water vapour and ozone in the tropical
lowermost stratosphere (S. Davis)
11:10 – 11:25 UCOZ and B-Bop ozone instrument (F. Danis)
11:25 – 11:40 Measurements of other tracers in Strateole 2 (G. Durry)
11:40 – 11:55 Accuracy of ECMWF and MERRA analyses in the deep tropics (R.
Plougonven)
11:55 – 12:15 Discussion on transport studies within Strateole 2
12:15 – 14:00 Lunch
Aerosol session
14:00 – 14:20 Overview talk
Challenges associated with ice and large particles in the TTL (T. Deshler)
14:20 – 14:35 Measurements of stratospheric aerosols with the LOAC (Light Optical Aerosol
Counter) Instrument (J.-B. Renard)
14:35 – 14:50 Pico-Lidar for Strateole 2 (F. Fierli)
14:50 – 15:10 Discussion on aerosol studies within Strateole 2
15:10 – 15:30 Break
Water vapour and dehydration session
15:30 – 15:50 Overview talk
Seasonal variability of the tropical tropopause dehydration (H. Vömel)
15:50 – 16:05 Pico SDLA –H2O for Strateole 2 (G. Durry)
16:05 – 16:20 SAWfPHY: a frost-point hygrometer for long-duration balloon flights
(D. Sourgen)
16:20 – 16:35 The SERB instrument for radiative fluxes observations (A. Hauchecorne)
16:35 – 16:50 A study of dehydration, hydration and horizontal transport in the tropical
UT/LS from high-resolution in situ observations (S. Khaykin)
16:50 – 17:05 Fine vertical structure of tropical waves derived from radiosondes and
relationships to dehydration (J. Alexander)
17:05 – 17:20 Role of small-scale fluctuations in influencing ice crystal numbers in cirrus
clouds (A. Podglajen)
17:20 – 17:40 Discussion on water vapour and dehydration within Strateole 2
Group dinner at 19:00 in Restaurant “L’entrepôt”, 7 rue Francis de Pressensé, Paris
(Metro Station : M13 Pernety)
March 19
Dynamics and Satellite validation
9:00 – 9:20
Overview talk
Multi-scale dynamics in the TTL (Th. Birner)
9:20 – 9:35
In situ measurement of temperature, pressure and winds (A. Hertzog)
9:35 – 9:50
Status of the NCAR driftsonde system (H. Vömel)
9:50 – 10:05 GPS radio-occultation on long-duration balloon (J. Haase)
10:05 – 10:20 Fiber optic measurements of air temperature during Strateole 2 (L. Kalnajs)
10:20 – 10:35 Equatorial Atmosphere Radar observations over the Indonesian Maritime
Continent (R. Wilson)
10:35 – 10:55 Break
10:55 – 11:10 Response of superpressure balloons to gravity waves and retrieval of wave
characteristics (R. A. Vincent)
11:10 – 11:25 Stochastic gravity-wave drag parameterizations in LMDz GCM
(A. de la Cámara)
11:25 – 11:40 Resolved and parameterized waves in a simulation of the QBO with CAM5
(A. Solomon)
11:40 – 11:55 Statistical study of short period fluctuations (GW & turbulence) using the
balloons and the gondolas as in-situ sensors (F. Dalaudier)
11:55 – 12:10 Studying deep convection in the tropics and validating satellite data during
Strateole 2 (J. Wang)
12:10 – 12:25 Overview of EUMETSAT's operational IASI L2 products and their validation
(T. Hultberg)
12:25 – 14:00 Lunch
14:00 – 14:15 YMC overview of planned observations and modeling: possible synergies
with Strateole 2 (G. Mullendore)
14:15 – 14:30 Short reports on recent YMC and ADM/Aeolus workshops
(J-Ph. Duvel and A. Hertzog)
14:30 – 14:45 Request process for US participants (B. Baeuerle)
14:45 – 18:00 General Discussion on the dynamics, NWP and satellite validation session and
on the workshop outcomes and actions