Workshop on assimilating satellite observations of clouds and precipitation into NWP models

ECMWF/JCSDA Workshop on Assimilating Satellite Observations of Clouds and Precipitation into NWP Models took place from 15 to 17 June 2010.

Description

To date, the assimilation of satellite measurements has mainly focused on the clear atmosphere. However, satellite observations in the visible, infrared, and microwave provide a great deal of information on clouds and precipitation as well as the clear regions above the clouds. The issue is how to use this information to improve the initialization of cloudy and precipitating atmospheric regions in NWP models. Since clouds and precipitation often occur in meteorologically sensitive regions in terms of forecast impact, such improvements are likely to be necessary for further significant progress in forecast skill. The workshop covered the current status of cloud/precipitation assimilation in NWP, availability and characteristics of relevant satellite observations, radiative transfer modelling developments, cloud and precipitation modelling, and last but not least special issues related to data assimilation of cloud/precipitation-affected observations.

This workshop was organised in collaboration with the Joint Centre for Satellite Data Assimilation (JCSDA) in the SA.

Programme

 

PDF iconContents and introduction (including working group reports)

 

PDF iconAnnex I: Participants

PDF iconAnnex II: Programme

Presentations

Tuesday 15 June  

Welcome

Erland Källén and Lars-Peter Riishojgaard

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Some observational and forecast issues, on different space time scales, for clouds using CLOUDSAT/CALIPSO/ISCCP and model ensemble

T N Krishnamurti

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Recommendations of 2005 workshop and objectives of current workshop

George Ohring and Peter Bauer

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Session 1: Cloud/precipitation assimilation at NWP centres

(Chair: Greg Tripoli)

 

Status of cloud and rain assimilation at ECMWF

Peter Bauer

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Clouds and precipitation data in the Joint Center for Satellite Data Assimilation

Lars-Peter Riishojgaard

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Cloud and precipitation assimilation at the Met Office

Richard Renshaw

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Operational status and recent developments on cloud and precipitation assimilation at JMA

Masahiro Kazumori

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Assimilation of cloud-affected infrared radiances at Environment Canada

Sylvain Heilliette

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Assimilation of cloud/precipitation data at regional scales

Thomas Auligné and Xiang-Yu Huang

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Cloudy infrared radiances: status of assimilation at Météo-France and intercomparison exercise

Vincent Guidard and Lydie Lavanant

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Session 2: Satellite observation of clouds and precipitation

(Chair: Fuzhong Weng)

 

Cloud and Rainfall observations using microwave radiometer data and a-priori constraints

Christian Kummerow

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Radar and lidar observations from space

Robin Hogan

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Precipitation estimation using combined active/passive sensor information within the GPM framework

Arthur Hou

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Session 3: Radiative transfer modelling in presence of clouds/precipitation

(Chair: Min-Jeong Kim)

 

Solar/IR forward modeling in direct cloud-affected radiance assimilation: status and prospects

Thomas Greenwald

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Microwave radiative transfer modeling of clouds and precipitation

Ralf Bennartz

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Advances in CRTM surface emissivity models and database

Fuzhong Weng

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Wednesday 16 June  
Session 4: Modeling of clouds and precipitation

(Chair: Ron Errico)

 

Representing cloud and precipitation in NWP models in Canada

Peter Yau

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The guiding principles, realities and future of cloud resolving models

Gregory J Tripoli

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Future directions for parametrization of cloud and precipitation microphysics

Richard Forbes

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Linearized physics: Progress and issues

Philippe Lopez

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Session 5: Specific data assimilation issues

(Chair: Lars-Peter Riishojgaard)

 

Review of cloud and precipitation data assimilation issues

Ron Errico

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Use of cloud condensate in the background error formulation

Elias Hólm

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Modelling of background error covariances for the analysis of clouds and precipitation: challenges and possible strategies

Thibaut Montmerle

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All-sky observations: errors, biases, representativeness, linearity and gaussianity

Alan Geer

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Observation-space diagnostics for microwave imager radiances

Niels Bormann and Carla Cardinali

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Observations use in data assimilation and verification: Similar but not the same

Marion Mittermaier

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Thursday 17 June  
Working group meetings  

Proceedings

All-sky observations: errors, biases, and Gaussianity

Alan Geer

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Precipitation estimation using combined active/passive sensor information within the GPM framework

Arthur Hou

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Rain-affected radiance data performance in 4D-Var

Carla Cardinali

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Cloud and rainfall observations using microwave radiometer data and a-priori constraints

Christian Kummerow

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Use of cloud condensate in the background error formulation

Elias Hólm

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Assimilation of Satellite Cloud and Precipitation Observations in Numerical Weather Prediction Models: Introduction to the JAS Special Collection

R M Errico

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Observations and simulations of microwave land emissivity

Fuzhong Weng

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The guiding principles, realities and future of cloud resolving models

Gregory J Tripoli

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Clouds and precipitation data in the Joint Center for Satellite Data Assimilation

Lars-Peter Riishojgaard

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Comparison of METOP IASI cloud products

Lydie Lavanant

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Observations use in data assimilation and verification: Similar but not the same

Marion Mittermaier

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Operational status and recent developments on cloud and precipitation assimilation at JMA

Masahiro Kazumori

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Estimates of observation errors and their correlations in clear and cloudy regions for microwave imager radiances from NWP

Niels Bormann

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Status of cloud and rain assimilation at ECMWF

Peter Bauer

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Representing cloud and precipitation in NWP models in Canada

Peter Yau

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Linearized physics: Progress and issues

Philippe Lopez

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Microwave radiative transfer modeling of clouds and precipitation

Ralf Bennartz

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Future directions for parametrization of cloud and precipitation microphysics

Richard Forbes

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Cloud and precipitation assimilation at the Met Office

Richard Renshaw

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Synergistic cloud retrievals from radar, lidar and radiometers

Robin Hogan

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Assimilation of cloud-affected infrared radiances at Environment Canada

Sylvain Heilliette

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Review: Current Research on clouds and Precipitation in my Laboratory

T N Krishnamurti

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Modelling of background error covariances for the analysis of clouds and precipitation

Thibaut Montmerle

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Assimilation of cloud/precipitation data at regional scales

Thomas Auligné

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Solar/IR forward modeling in direct cloud-affected radiance assimilation: status and prospects

Tom Greenwald

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Status of cloudy infrared radiance assimilation at Météo-France

Vincent Guidard

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Local information


You can also see an archive of past workshops

View full calendar of events