18-19 March, 2009

International Workshop on radar and modeling studies of snowfall:
Precise observation and modeling of solid precipitation

　　　→　See Poster!

Solid precipitation has a wide variety of shapes, which make it
difficult to estimate precipitation amount and derive accurate
expression of precipitation particle growth in numerical models.
Recently, the size distribution, shape, and the falling speed of solid
precipitation particles can be observed continuously in high time
resolution. Aircraft observations revealed the quantitative
characteristics of the cloud/precipitation particles aloft. The result
of these observations is expected to influence significantly to the
quantitative precipitation estimation from radar and microphysical
expressions in cloud resolving models, leading to the improvement of
the prediction of wintertime precipitation. The International Workshop
on Radar and Modeling Studies of Snowfall is focused on the theme
"Precise Observation and Modeling of Solid Precipitation." Key topics
will include 1) Observation method of solid precipitation, 2) Numerical
modeling of precipitation processes, 3) Radar observation, 4)
Quantitative precipitation estimate, 5) Comparison of observation and
simulation, and other related topics. The aim of this workshop is to get
a prospect for 1) a correct understanding of the variety of solid
precipitation particles, and 2) improvement of prediction of snowfall
distribution using radar observations and bulk parameterization.

Schedule:

Mar. 18 AM&PM Session
Mar. 18 evening Banquet
Mar. 19 AM Session
Mar. 19 PM Excursion

Session:

Atrium Nagaoka (5 minutes walk from JR Nagaoka Station)
Room Hakuhou

Program:

Mar 18 (Wed.) AM 08:45 -
Reception

Mar 18 (Wed.) AM 09:00 - 11:30
Welcome and Introductory Remarks
*Atsushi Sato (Director, Snow and Ice Research Center, NIED, Nagaoka Japan)

Session 1: Precise snow particle observations
*Yasushi Fujiyoshi (Hokkaido University, Sapporo, Japan) : Toward improvement of microphysical proceses within the melting layer
*Masaaki Ishizaka (Snow and Ice Research Center, NIED, Nagaoka, Japan) : Observations of solid precipitation particles using the Falling-Snow Observatory of Snow and Ice Research Center NIED in Nagaoka

Session 2: Modeling of solid precipitation
*Ryohei Misumi (NIED, Tsukuba, Japan) : A parcel model simulation of graupel and snowflake formation in convective snow clouds over the Sea of Japan

Mar 18 (Wed.) PM 13:30 - 18:00
Session 2: Modeling of solid precipitation
*Jen-Ping Chen (National Taiwan University) : The effect of bacteria and mineral dust as ice nuclei on the formation of snow and graupel simulated with a regional model.
*Takeshi Maesaka (NIED, Tsukuba, Japan) : A simulation of a lake effect snowstorm around the Great Lakes with a cloud resolving numerical model.
*Yasutaka Ikuta (NPD, Japan Meteorological Agency) : Verification of solid precipitation using radar simulator for JMA nonhydrostatic model.
*Masashi Ujiie (NPD, Japan Meteorological Agency) : Characteristics of cloud microphysics in JMA nonhydrostatic model on solid precipitation forecast.

Session 3: Radar studies, comparison of observations and modeling
*Sento Nakai (Snow and Ice Research Center, NIED, Nagaoka, Japan) : Comparison of CRM and surface/radar observations
*Koyuru Iwanami (NIED, Tsukuba, Japan) : Hydrometeor type classification in winter clouds using X-band polarimetric radar measurements

Mar 18 (Wed.) Evening 19:00 -
Banquet

Mar 19 (Thu.) AM 09:00 - 12:00
Session 3: Radar studies, comparison of observations and modeling
*Tadayasu Ohigashi (HyARC, Nagoya University, Nagoya, Japan) : Observation and simulation on hydrometeor properties of snow clouds
*GyuWon Lee (Kyungpook National University, Korea) : Density of snow and radar bright band
*Hisaki　Eito (Meteorological Research Institute, Tsukuba, Japan) : Verification of solid hydrometeor properties simulated by a cloud resolving model using passive microwave radiometer and radar observations.

Discussions: Future perspective of precise solid precipitation observation and its impact to the CRM and snowfall prediction

Mar 19 (Thu.) PM 13:30 -
Excursion to SIRC and nearby mountain stations