Ensemble Kalman Fitting Paleo-Reanalysis Version 2.0 (EKF400_v2.0)

EKF400 version 2 is a monthly resolved paleo-reanalysis covering the period 1603 to 2003. Early instrumental temperature, surface pressure and precipitation (new in version 2) observations, temperature indices derived from historical documents and temperature and moisture sensitive tree-ring measurements (largely increased number in version 2) were assimilated into an atmospheric general circulation model ensemble using a Kalman filtering technique. This data set combines the advantage of traditional reconstruction methods of being as close as possible to observations with the advantage of climate models of being physically consistent and having 3-dimensional information about the global state of the atmosphere at 2x2 degree resolution for various variables and at all points in time.

While version 1 was using time-dependent covariances from the 30-member ensemble, version 2 uses a blended covariance matrix. It consists of 50% time-dependent and 50% climatological covariances. This leads to a better covariance estimation, not only between various locations in space but in between various variables, too.

 
Citation proposal
Dr. Jörg Franke (Institute of Geography and Oeschger Centre for Climate Change Research) - Dr. Veronika Valler (Institute of Geography and Oeschger Centre for Climate Change Research) - Yuri Brugnara (Institute of Geography and Oeschger Centre for Climate Change Research) - Stefan Brönnimann (Institute of Geography and Oeschger Centre for Climate Change Research). Ensemble Kalman Fitting Paleo-Reanalysis Version 2.0 (EKF400_v2.0). https://gdk.gdi-de.org/geonetwork/srv/api/records/de.dkrz.wdcc.iso3879249
 

Simple

Alternate title
Ensemble Kalman Fitting Paleo-Reanalysis Version 2.0 (EKF400_v2.0)
Date ( Creation )
2020-06-23
Identifier
None
Identifier
doi:10.26050/WDCC/EKF400_v2.0 / Ensemble Kalman Fitting Paleo-Reanalysis Version 2 (EKF400_v2)

  Originator

Other citation details
doi:10.26050/WDCC/EKF400_v2.0

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Keywords ( Theme )
  • data assimilation
Keywords ( Theme )
  • tree ring proxy data
Metadata language
eng English
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Begin date
1602-01-15
End date
2003-12-15
Distribution format
  • NetCDF (network Common Data Format )

Distributor

  Distributor

Units of distribution
Mb
Transfer size
110330
OnLine resource
http://doi.org/doi:10.26050/WDCC/EKF400_v2.0  
Hierarchy level
series Series

gmd:MD_Metadata

File identifier
de.dkrz.wdcc.iso3879249   XML
Hierarchy level
series Series
Hierarchy level name
EKF400_v2.0
Date stamp
2021-10-23T04:39:24
Metadata standard name
ISO 19115
Metadata standard version
ISO 19139 / DKRZ ISO Simple Profile V1.0

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Dataset URI
http://doi.org/doi:10.26050/WDCC/EKF400_v2.0
 
 

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