Marine Ecosystems Research Department - jamstec japan agency ...

JAMSTEC 2002 Annual Report
Frontier Observational Research System for Global Change
balance in Western Tibet.
(iii) Initiation of water/heat balance and drainage
study in North Central Mongolia.
(iv) Further data accumulation of the solid precipitation
evaluation and the role of drifting/blowing
on surface water/heat exchange at Barrow.
In , we emphasized initiation at the Mongolian
observation site (iii), and (ii) was downscaled due to
decrease of the budget. Data accumulation at the discontinuous
permafrost zone (iii) will make it possible
to do the comparative study on the characteristics of
land hydrological cycle at the discontinuous and continuous
permafrost zone. Enough data accumulation
for (iv) has been made, and the primary result can be
deduced from the three-year observation. In this study
snow particle counter is playing an important role. The
group is participating in the CREST project related to
water cycle and vegetation, and this aspect will be
studied in detail under that project.
During the past three years, the observation network
has been established and the preparation has been
basically finished for the data collection for implementing
objective (a) – (c). Therefore, the main part of
the activities will be shifted to data accumulation,
analysis, modeling, and integration.
(III) Cloud and Precipitation Processes Group
In order to clarify the hydrological cycle in heat
source regions of the Asia and the maritime continent,
especially the atmospheric hydrological cycle processes
in the regions from the western tropical pacific to the
Baiu front, this group is carrying out multi-scale observations
on hydrological cycle processes of cloud clusters
and elucidating roles of mesoscale cloud and precipitation
systems in each process of atmospheric hydrological
cycles. The results of the observations and analyses
will contribute to the development and improvement
of numerical models of global atmosphere.
This group is conducting observation of the structure
and evolution of cloud and precipitation systems in the
downstream region of the Yangtze River. It is also collaborating
closely with the Air-Sea Interaction Group
of Climate Variations Observational Research Program
of FORSGC on the observation of cloud and precipitation
processes in the western tropical Pacific region.
The first intensified observation in the downstream
region of the Yangtze River was performed in FY
and data collected during this year have been analyzed
in detail. The preliminary results on the formation and
development processes of precipitation systems along
the Baiu front were presented in the China-Japan
Workshop on Heavy Rainfall Experiment and Study
(Fig.).
In FY, the second intensified observation in the
downstream region of the Yangtze River was carried out
using Doppler radars, a bistatic receiver, a wind profiler,
automatic weather stations (AWS), and a micro rain
radar (Fig.). After the completion of the observation,
all the observation equipment from Japan has been
Fig.14 A commemorative photograph of the China-Japan
Workshop on Heavy Rainfall Experiment and Study held in
Haikou, China.
Fig. 15 A commemorative photograph of the intensified observation
held in 2002.
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