Transcript cordex - G-RSM

CORDEX
KANAMARU Hideki
CORDEX
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A COordinated Regional climate
Downscaling EXperiment
Develop a framework
Foster an international coordinated effort for
input to impact/adaptation work and to the
IPCC AR5
Promote greater interaction and
communication between global climate
modelers, the downscaling community and
end-users to better support impact/adaptation
activities.
• a. Historical runs for the period Jan 1950 – Dec
2005
• b. RCP4.5 and RCP8.5 scenario runs for the
period Jan 2006 – Dec 2100
• c. AMIP integrations : All years.
• d. Decadal hindcasts/forecasts : A minimum of 3
members/GCM for the 3 integration periods
initialized at the first date and run to the second
date: (i) 1980-2010, (ii) 1990-2000, (iii) 20052035
• CMIP5-GCMs (6 hourly, global data on
model levels, Temperature, eastward and
northward wind velocity, specific humidity
and surface pressure. Daily and/or
monthly values of sea surface
temperature, sea-ice fraction, soil moisture
and soil temperature), early summer of
2010
• for the period 1989-2008. will be used to
evaluate the downscaled results across
different methods, models and regions of
the world.
• ERA-interim (6-hourly, global, multi level
data 2°x2°version of the original ERAinterim), now
Protocol
• 0.44°x0.44° for an equatorial rotated
coordinate system, resulting in a quasi-regular
resolution of ~50km.
• Groups may run higher resolution after
completing 50km - 0.22°x0.22° resolution and
0.11°x0.11° resolution (suggested for Europe),
for example
• Spectral nudging or not
• there is still an ongoing discussion as to whether
3-hourly values of 2-metre temperature and
precipitation should also be stored at the central
CORDEX archive
Diagnostic study
• Task Force on Regional Climate
Downscaling (TFRCD) welcomes
volunteers to coordinate analysis of
CORDEX downscaled data on various
domains.
• Collation and quality-control of suitable
observation data.
Domains
• RCM interior domain, i.e. the area left
once the boundary relaxation zone is
excluded.
RMIP
Regional Climate Model Intercomparison
Project for Asia
• RIEMS – China
• RegCM3 - Japan
• NJU MM5 - China
• SNU RCM - Korea
• MRI (JSM_BAIM) - Japan
• CSIRO CCAM - Australia
NARCCAP
•North American Regional Climate Change
Assessment Program
•1980-2004
•2041-2070 minus 1971-2000
GFDL HADCM3 CGCM3 CCSM
RegCM3
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ECPC
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PRECIS
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CRCM
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WRF
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MM5
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• Groups are encouraged to perform as
many of the limited-area integrations as
possible
• Africa – focus region
• We ask that the CORDEX domain be fully
within your interior model domain and you
try to deviate as little as possible from the
requested domain, while still satisfying
your own interests.
Data archive
• Core, relevant to all communities: monthly
and seasonal means;
• Tier 1, relevant to most communities: daily
surface/selected upper air data;
• Tier 2, higher frequency and more
complete atmospheric/surface variables.
• Danish Meteorological Institute
• Which version of RSM?
• Which group to do what region with ERAinterim?
• With CMIP5?
• Global downscaling?
• Link to your own research interests?
CMIP5
ERA-interim
South America
Central America
North America
Europe
Africa
West Asia
East Asia
Central Asia
Australiasia
Antarctica
Arctic
Mediterranean
Historical
RCP (2006-2100)
1950-2005
RCP4.5
RCP8.5
AMIP
Decadal (3 GCM minimum)
1980-2010
1990-2000
2005-2035