15-17 June 2010, 2 days for presentations, 1 day for working groups followed by a plenary session
To date, assimilation of satellite measurements has focused on the clear
atmosphere. But 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 sensitive regions for forecast impacts, such improvements are
likely necessary for continuing significant gains in weather forecasting.
In 2005, the JCSDA sponsored an international workshop that covered the
three main topics related to assimilating observations in
cloudy/precipitating regions: satellite observing capabilities, modelling
radiative transfer and cloud/precipitation formation, and data assimilation.
The papers presented at the 2005 workshop were published as a Special
Section of the Nov. 2007 issue of JAS.
Document developments since the 2005 workshop and make recommendations to
ECMWF, JCSDA, and other NWP centres and scientific communities for future
research developments and collaboration. Note the focus on operational
Introduction will include brief summary of 2005 workshop.
Workshop sessions will cover current status of cloud/precipitation
assimilation in NWP, observations, radiative transfer modelling, cloud and
precipitation modelling, and special issues related to data assimilation
of cloud/precipitation-affected observations.
Presenters will be tasked to present status and issues/solutions that
can be addressed in working groups and not to present well-known
Working groups run in parallel and each group comprises experts in
observation, modelling, and data assimilation. Each group should devise an
implementation plan across disciplines. Final report will merge individual
reports into one consistent document.
Selected papers will be submitted for a special issue of the Quarterly
Journal of the Royal Meteorological Society; publication in ECMWF
Proceedings (and online) in any case. A short workshop summary will be
submitted to AGU's EOS.