Geen diatitel

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European Climate Assessment projectAlbert.Kle
in.Tank _at_ KNMI.nl ETCCDI meeting, 15
November 2005
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• Guide
• European Climate Assessment project (ECAD)
• Present work plans
• Related activities in the EU-project ENSEMBLES
• Links with the ETCCDI

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• Guide
• European Climate Assessment project (ECAD)
• Present work plans
• Related activities in the EU-project ENSEMBLES
• Links with the ETCCDI

4

• ECAD project
• initiated in 1998 coordinated by KNMI
• EUMETNET funding (ends in 2007)
• now 54 participants (data holding
  institutions)from 42 countries (WMO Region VI)
• daily station data collectedand processed at
  KNMI
• 4 journal papers andcolorful report issued in
  2002
• provided the European input to global indices
  studiesby Frich et al., 2002 and Alexander et
  al., 2006

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• http//eca.knmi.nl
• this public website, which has been operational
  for 6 years now, presents
• free download of about 75 of the daily station
  series
• QC and homogeneity tests results for each series,
  as well as indices series
• documentation, including indices comparison table
  that highlights the different flavors of our
  common indices in (R)CLIMDEX, APN, ECAD,
  STARDEX( result from previous ET meeting in
  Norwich)

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Testing method, see Wijngaard, Klein Tank and
Können, IJC, 2003
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Temperature 1946-2004
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Precipitation 1946-2004
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• Guide
• European Climate Assessment project (ECAD)
• Present work plans
• Related activities in the EU-project ENSEMBLES
• Links with the ETCCDI

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• Auto-update station series
• concatenate series, fill gaps update using GTS
  data (for near-real time monitoring later
  replaced by nation series)

1900
now interrupted station
series nearby station

SYNOPs blended series
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• Future work
• solve data QC and homogeneity problems related to
  different observation times, station relocations
  (lack of metadata), plus check suspicious
  extremes with radar data and/or weather maps
• include drought related indices, such as SPI
  (based on rainfall data only) or SC-PDSI (based
  on temperature, rainfall and WHC of soils)
• transform the ECAD system into an operational
  RCC functionality for WMO Region VI (as a means
  to secure continuity after the funding ends)
• make further connections to the KNMI Climate
  Explorer at http//climexp.knmi.nl (by Geert Jan
  van Oldenborgh), which already includes a long
  list of all kinds of indices

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• Guide
• European Climate Assessment project (ECAD)
• Present work plans
• Related activities in the EU-project ENSEMBLES
• Links with the ETCCDI

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• ENSEMBLES project
• (ENSEMBLE-based Predictions of Climate Changes
  and Impacts)
• the daily station database of ECAD is extended
  and improved data included from STARDEX,
  EMULATE, GHCND, GSN, MAP, as well as many more
  nation series (KNMI, MeteoSwiss)
• a daily gridded dataset (1960-2000) is produced
  for Europe at 25x25 km2 resolution for
  comparisons with RCMs (CRU, Oxford Univ.), using
  spatiotemporal stochastic simulation (Kyriadis et
  al., J. Hydrol., 2004)

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2033 stations

• 1831 precipitation
• 1384 Tmax
• 1388 Tmin
• 1244 Tmean
• 317 mslp
• 180 snow depth

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• ENSEMBLES plans
• evaluate the gridded dataset, in particular for
  the representation of extremes
• study change in the occurrence of extremes in the
  gridded dataset (and in RCM data) using core
  indices and more advanced techniques (e.g. using
  spatial pooling of GEV parameters)
• study relations with modes of natural variability
  (following Haylock and Goodess, IJC, 2004)

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Trends 1960-2000 for 5 precipitation classes
Europe
Northern Europe
Southern Europe
Source Klok and Klein Tank, in prep.
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Source Smits, Klein Tank and Können, IJC, 2005
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• Guide
• European Climate Assessment project (ECAD)
• Present work plans
• Related activities in the EU-project ENSEMBLES
• Links with the ETCCDI

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• Possibilities
• all are welcome to use the open source software
  (written in R, Java, PHP) that has been developed
  for the ECAD website (for navigation, time
  series plots, homogeneity plots, trend maps or
  anomaly maps)
• ET to consider including some additional indices
  from the ECAD list in the core set (e.g. drought
  related indices?)
• extent the high resolution daily gridded dataset
  (developed for Europe in ENSEMBLES) to other
  regions?

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http//eca.knmi.nl mailto Albert.Klein.Tank
_at_ KNMI.nl

• the end questions?