2007 Annual Report - jamstec japan agency for marine-earth ...

discussed in the field of internal gravity wave research, our
work gives the first quantitative estimate on the energy conversion
rate due to meso-scale eddies using the global high-resolution
simulation data and it contributes to those two fields complementary.
Our theory turned out to be consistent with a theory
on semi-Lagrange mean developed in dynamical meteorology
and further researches on comparison are to be done.
2Hydrological Cycle Research Program
Research Results
Our program conducts researches on understanding the
dynamics of hydro-climate and hydrological cycle and their
variabilities, particularly over the Eurasian continent and the
Asian monsoon region, based on the comprehensive data,
including those from international projects e.g.,
GEWEX/GAME, CEOP/CAMP, in-situ observational data
f. International collaboration
At the end of last year, we hosted an international symposium
on climate variations and predictability studies and
strengthened international collaborations especially in the field
of predictability experiments using SINTEX-F1 coupled model.
Since SINTEX-F1 outperforms other leading models in ENSO
and IOD predictions, we received prediction data release
requests from JMA, MRI, GFDL and other institutes in NOAA,
University of Hawaii, Seoul National University, CSIRO,
University of Tasmania, Met Office of Malaysia, ECMWF,
Ocean University of Qingdao, Institute of Atmospheric Physics
of CAS and IMD and others in addition to our participation in
multi-model ensemble experiments at APCC. Our multi-faceted
international collaborative activities include those data release
activities.
by Institute of Observational Research for Global Change
IORGC, various kind of satellite data, and objectively-analyzed
global data. The outputs from GCMs and RCMs are also
used both for further understanding and for model validations.
Based on these knowledges, we also develop and improve
hydrological cycle models from basin or region-scale up to
global-scales.
To understand and model hydro-meteorological processes
in Asian region using high-resolution observational data, cooperative
studies on the Yellow River basin hydro-meteorology
was conducted with the Research Institute for Humanity and
Nature RIHN, and on cloud-precipitation system in East
Asia with the Ocean Research Institute ORI of University
of Tokyo and Meteorological Research Institute MRI. A
cooperative study with the Atmospheric Composition Research
Program of FRCGC was also conducted for improving the
g. Social contributions
As a noteworthy social contribution relating to JCOPE
activity, Nihon-Yusen, Inc.: one of the big global shipping
companies, started to use our data as a new component of its
ocean routing support system. This data provision service is
done through a newly established LLP on oceanic currents as
the first venture business of JAMSTEC. A new research on a
possible cause of severe winter conditions in Japan induced by
the decrease of the Arctic sea ice was spotlighting by mass
media. Extraordinary heavy snowfall in China may be occurred
by this cause. We also initiated a new collaborative MAFF
funded research with ESC aiming at the evaluation of possible
large outbreak of marine organisms associated with the surrounding
environmental changes. In addition, four members of
our program joined JMA task force of investigative commission
on unusual weather.
cloud-radiation model for satellite-remote sensing of air-pollutants.
Model accuracies were also confirmed by mutual comparison
of the models. To upgrade the radiation transfer model
for vegetation canopy system, a cooperative study with the
Ecosystem Change Research Program of FRCGC was conducted.
To improve model for meso-convective systems for GCMs,
a cooperative study with the Global Warming Research
Program was also conducted.
In addition, to contribute in improving prediction of hydrological
cycles associated with the "global warming" for future,
we have made validation of variability and changes of hydrological
cycles simulated for the past several decades in the highresolution
GCMs of CCSR/NIES/FRCGC and of JMA/MRI
with those from the observations particularly for Eurasia-
Pacific and Asian monsoon regions, to examine systematic
errors of the models, as well as analysis of the results from