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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temperature, surface pressure and precipitation (new in version 2) observations, temperature indices derived from historical documents and temperature and moisture sensitive tree-ring measurements (largely increased number in version 2) were assimilated into an atmospheric general circulation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.
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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 |
- Identification
- Distribution
- Quality
- Spatial rep.
- Ref. system
- Content
- Portrayal
- Metadata
- Md. constraints
- Md. maintenance
- Schema info
Identification
Data identification
Citation
- 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)
- Other citation details
- doi:10.26050/WDCC/EKF400_v2.0
Point of contact
- Keywords ( Theme )
-
- data assimilation
- Keywords ( Theme )
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- tree ring proxy data
- Metadata language
- eng English
Extent
))
- Begin date
- 1602-01-15
- End date
- 2003-12-15
Distribution
Distribution
- Distribution format
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- NetCDF (network Common Data Format )
Distributor
Digital transfer options
- Units of distribution
- Mb
- Transfer size
- 110330
- OnLine resource
- http://doi.org/doi:10.26050/WDCC/EKF400_v2.0
Quality
- Hierarchy level
- series Series
Content
Coverage Description
- Attribute description
- air_pressure_at_sea_level
- Content type
- modelResult modelResult
- Descriptor
- Pa
Coverage Description
- Attribute description
- air_temperature
- Content type
- modelResult modelResult
- Descriptor
- K
Coverage Description
- Attribute description
- eastward_wind
- Content type
- modelResult modelResult
- Descriptor
- m s-1
Coverage Description
- Attribute description
- geopotential_height
- Content type
- modelResult modelResult
- Descriptor
- m
Coverage Description
- Attribute description
- lagrangian_tendency_of_air_pressure
- Content type
- modelResult modelResult
- Descriptor
- Pa s-1
Coverage Description
- Attribute description
- latitude
- Content type
- modelResult modelResult
- Descriptor
- degrees_north
Coverage Description
- Attribute description
- level_temp
- Content type
- modelResult modelResult
- Descriptor
- m and Pa
Coverage Description
- Attribute description
- longitude
- Content type
- modelResult modelResult
- Descriptor
- degrees_east
Coverage Description
- Attribute description
- northward_wind
- Content type
- modelResult modelResult
- Descriptor
- m s-1
Coverage Description
- Attribute description
- precipitation_amount
- Content type
- modelResult modelResult
- Descriptor
- kg m-2
Coverage Description
- Attribute description
- pressure_level_gph
- Content type
- modelResult modelResult
- Descriptor
- Pa
Coverage Description
- Attribute description
- pressure_level_wind
- Content type
- modelResult modelResult
- Descriptor
- Pa
Coverage Description
- Attribute description
- time
- Content type
- modelResult modelResult
- Descriptor
- not filled
Metadata
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
Point of contact
- Dataset URI
- http://doi.org/doi:10.26050/WDCC/EKF400_v2.0
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