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
Contents and introduction (including working group reports)
Presentations
| Tuesday 15 June | |
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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) |
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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) |
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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) |
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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 | |
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Session 4: Modeling of clouds and precipitation(Chair: Ron Errico) |
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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) |
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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 | |
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| Working group meetings |
Proceedings
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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 |
|
|
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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