Preliminary Program
Joint EUCLIPSE - CFMIP meeting on
" The role of cloud processes and feedbacks in the climate system”
May 29th - June 1st 2012 in Paris, France.
TUESDAY May 29th
EUCLIPSE & CFMIP
08:15 AM Registration & coffee
Introductions, overviews
09:30 AM Welcome, logistics, objectives
09:45 AM S. Bony/M.Webb: CFMIP en CMIP5
10:00 AM P. Siebesma: EUCLIPSE
10:15 AM H. Chepfer: Overview of CFMIP-obs.
10:30 AM coffee break
Multi-model evaluations
11:00 AM A. Bodas-Salcedo: Evaluation of CFMIP2 models using COSP: the role of clouds in the
radiation budget over the Southern Ocean.
11:15 AM S. Klein: Are cloud simulations improving in CMIP models? Evaluation with ISCCP simulator output.
11:30 AM C. Nam: Compensating errors in the vertical distribution and optical properties of clouds amongst
several CMIP5 general circulation models found using CALIPSO, PARASOL, and CERES satellite
observations.
11:45 AM J.-L. Li: Radiation Budget, Cloud Water Content and Precipitation Evaluation of CMIP3 and CMIP5
20th Century Simulations: Implications for Neglecting Precipitating Hydrometeors on Radiation.
12:00 PM Y.Tsushima: Assessment of the Seasonal Variation of Cloud Regimes in CMIP5 AMIP experiments.
12:15 PM Discussion
12:30 PM LUNCH (on site)
Climate Sensitivity
02:00 PM J. Vial: Toward a better understanding of the inter-model spread of climate sensitivity estimates as
diagnosed from CMIP5 climate models.
02:15 PM L. Tomassini: A CMIP5 model inter-comparison of climate change feedbacks.
02:30 PM O. Geoffroy: A new method to determine the adjusted radiative forcing, the equilibrium climate
sensitivity and the transient radiative feedback function using a two-box energy balance model.
02:45 PM J.-L. Dufresne: Estimates of forcing, feedback and dynamical characteristics of the CMIP5 models.
03:00 PM Discussion
03:15 PM coffee break and
03:30 PM Poster viewing additional to the lunch periods (see page 4).
03:45 PM
04:00 PM
04:15 PM
Adjustments & feedbacks
04:30 PM S. Bony: Effect of increased CO2 on tropical precipitation.
04:45 PM T. Ogura: Importance of instantaneous radiative forcing to tropospheric adjustment.
05:00 PM Y. Kamae: Timescale and the role of land-sea contrast in the tropospheric adjustment.
05:15 PM U. Lohmann: Impact of cloud microphysics on cloud feedback and climate sensitivity.
05:30 PM
05:45 PM Discussion
06:00 PM (& preparation BOGs)
06:15 PM session ends
Ice-breaker
WEDNESDAY May 30th
EUCLIPSE & CFMIP
Cloud feedbacks
09:00 AM K. Bellomo: An observational constraint on the cloud feedback.
09:15 AM M. Webb: Coupling between subtropical cloud feedback and the local hydrological cycle in a climate model.
09:30 AM F. Brient: Interpretation and evaluation of tropical lowclouds feedbacks in CMIP5 models.
09:45 AM B. Medeiros: Cloud response in the CFMIP aquaplanet experiments.
10:00 AM D. Popke: Investigation of the tropical atmosphere with a radiative-convective version of a comprehensive GCM.
10:15 AM Discussion
10:30 AM coffee break
Cloud feedbacks (continued)
11:00 AM A. Gettelman: Understanding climate sensitivity and cloud feedbacks in the evolution of a climate
11:15 AM M. Watanabe: Using a multi-physics ensemble for exploring diversity in cloud-shortwave feedback
11:30 AM H. Shiogama: On the structural and parametric uncertainties of feedback, adjustment and climate
11:45 AM H. Kawai: Characteristics of vertical structures of marine boundary layer clouds over mid-latitudes.
12:00 PM G. Tselioudis: Poleward shift of midlatitude storms in the last 25 years derived from satellite cloud
retrievals and the resulting radiative effects.
12:15 PM Discussion
12:30 PM LUNCH and poster viewing (on site)
Cloud processes
02:00 PM J. Kay: The Arctic cloud response to anthropogenic forcing and its impact on Arctic climate feedbacks.
02:15 PM J. Karlsson: Evaluation of the present and projection into the future of Arctic climate and cloud-
radiation interactions.
02:30 PM G. Svensson: Arctic clouds and their role for the surface energy balance.
02:45 PM D. Bouniol: Analyses of CMIP5 simulations over the West African sites: cloudiness, radiation
03:00 PM F. Guichard: The surface energy budget over land and its couplings with water vapour, convection and
clouds in CMIP5 climate simulations analysis of the West African cfSites.
03:15 PM Discussion
03:30 PM coffee break
Cloud processes (continued)
04:00 PM S. de Roode: LES results of the EUCLIPSE Lagrangians: entrainment, decoupling and cloud
04:15 PM J.J. van der Dussen: LES sensitivity experiments of the EUCLIPSE stratocumulus to cumulus transition
04:30 PM R: Neggers: SCM results for the transition cases: Mapping the behaviour of boundary-layer clouds
as a function of stability under weakening inversions.
04:45 PM Bretherton & Zhang: CGILS Intercomparison Update
05:00 PM S. Dal Gesso: Estimating the low cloud radiative feedback in a perturbed climate from steady-states
of Scu-topped boundary layers: a SCM study
05:15 PM
05:30 PM Discussion
05:45 PM (& preparation BOGs)
06:00 PM
06:15 PM session ends
7:30 PM Restaurant
THURSDAY May 31st
EUCLIPSE & CFMIP
Clouds-dynamics
09:00 AM B. Moebis: Analyzing the double ITCZ phenomenon with ECHAM6 in aqua-planet mode.
09:15 AM B. Oueslati: Sensitivity of ITCZ location and tropical large-scale circulation to lateral entrainment in
09:30 AM T. Crueger: The Madden-Julian-like oscillation in EHCAM6: Multivariate assessment of AMIP and
09:45 AM R. Roehrig: Relationships between precipitation, clouds, radiation and large-scale tropical dynamics:
observational analysis and evaluation of CMIP5 models.
10:00 AM J. Cattiaux: European temperature extremes in CMIP5 - present-day biases and future uncertainties.
10:15 AM Discussion
10:30 AM coffee break
Clouds-dynamics (continued)
11:00 AM R. Burgman: Low-level clouds drive persistent changes in atmospheric circulation and regional
hydroclimate.
11:15 AM K.-M. Xu: Climate Simulation of the Seasonal Variations of the Eastern Pacific Deep Convection and
Low Clouds with a Multiscale Modeling Framework Model.
11:30 AM M. Khairoutdinov: Climate and cloud response of the super-parameterized CAM with additional super-
parameterization of low-level clouds, a.k.a. SP-CAM with MiniLES.
11:45 AM S. Xie: On the Correspondence between Short- and Long- Timescale Systematic Errors in
Transpose-AMIP models for the Year of Tropical Convection.
12:00 PM D. Klocke: Comparing NWP methods to evaluate climate models.
12:15 PM Discussion
12:30 PM LUNCH and poster viewing (on site)
Breakout Groups
02:00 PM 4 BOGs in parallel
02:15 PM BOG1 evaluation & metrics
02:30 PM BOG2: cld feedbacks & adj
02:45 PM BOG3: clds-dyn interactions
03:00 PM BOG4: cld processes
03:15 PM
03:30 PM coffee break
Breakout Groups (continued)
04:00 PM 4 BOGs in parallel
04:15 PM BOG1 evaluation & metrics
04:30 PM BOG2: cld feedbacks & adj
04:45 PM BOG3: clds-dyn interactions
05:00 PM BOG4: cld processes
05:15 PM Report
05:30 PM from BOGs
05:45 PM &
06:00 PM discussion
06:15 PM session ends
End meeting for non-EUCLIPSE participants
FRIDAY June 1st
EUCLIPSE
Overview WPs
09:00 AM WP3: Status and next steps: S.R. de Roode
09:15 AM WP2: Status and next steps: S. Bony
09:30 AM WP4: Status and next steps: B. Stevens
Cross-cutting Themes and Proposals
09:45 AM Low-Cloud Feedbacks: S. Bony
10:15 AM Cloud-Convection Dynamics: B. Stevens/T. Crueger
10:45 AM coffee break
11:15 AM Cloud Bias Characterizations: P. Siebesma/R. Neggers
11:45 AM Sensitivity Experiments of soil moisture: C. Hohenegger/T. Crueger
12:00 AM Cloud-aerosol sensitivities: U. Lohmann
12:15 AM Proposal T-AMIP experiments: D. Klocke/M. Rodwell
12:45 PM Final discussions + recap: P. Siebesma
13:00 PM LUNCH
Book and Summer school
02:00 PM Book outline and Summer school: P. Siebesma/B. Stevens
02:15 PM Presentations of chapter outlines
03:30 PM coffee break
Wrap-up
04:00 PM Discussion of the chapter outlines plus next steps
05:00 PM End Meeting
POSTERS:
G. Cesana Evaluation of the cloud water phase in a climate model using CALIPSO-GOCCP.
F. Cheruy Combined Influence of atmospheric physics and soil hydrology on the simulated meteorology at the
SIRTA atmospheric observatory and in Europe.
S. Dal Gesso EUCLIPSE intercomparison study on stratocumulus albedo estimated by different
GCM/NWP model radiation parametrizations.
C. Franklin Evaluating clouds in ACCESS using the satellite simulator package COSP.
O. Geoffroy, Dominique Bouniol, Françoise Guichard, Fleur Couvreux and Florence Favot
Estimation of cloud radiative impacts over West Africa: seasonal and meridional patterns
C. Kodama, A. T. Noda, S. Iga and M. Satoh
Cloud properties of the NICAM simulations under the realistic and aquaplanet conditions.
D. Konsta, H. Chepfer and J.L. Dufresne
A process oriented evaluation of clouds simulated by the LMDZ5 GCM using A-train high
spatial resolution observations (CALIPSO-PARASOL-CERES).
M.J. Kurowski, H. Pawlowska, D. Jarecka
Large-eddy simulations of stratocumulus to cumulus transition using EULAG.
C. Lacagnina and F. Selten
EC-EARTH model biases in tropical clouds.
Li Lijuan, Dong Li, Huang Wenyu, Wang Yong and Wang Bin
Preliminary Evaluation of the Cloud Fraction Simulations by GAMIL2 using COSP.
S. de Roode and J. Sival
Feedback effects of perturbed boundary conditions on stratocumulus equilibrium states.
M. Salzmann Cloud Evaluation and Feedbacks in the new Max Planck Institute Earth System Model (MPI-ESM).
T. Toniazzo and S. Woolnough
Development of warm SST errors in the southern tropical Atlantic in CMIP5 decadal hindcasts.
M.D. Zelinka, S.A. Klein, T. Andrews, M. Webb, P. Forster and J. Gregory
Intercomparison of Cloud Feedbacks and Rapid Adjustments in CMIP5.