Journal cover Journal topic
Climate of the Past An interactive open-access journal of the European Geosciences Union
Clim. Past, 13, 421-436, 2017
https://doi.org/10.5194/cp-13-421-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
08 May 2017
Reconstructing paleoclimate fields using online data assimilation with a linear inverse model
Walter A. Perkins and Gregory J. Hakim

Data sets

MPI-ESM-P Last Millennium Simulation J. Jungclaus, M. Giorgetta, C. Reick, S. Legutke, V. Brovkin, T. Crueger, M. Esch, K. Fieg, N. Fischer, K. Glushak, V. Gayler, H. Haak, H.-D. Hollweg, S. Kinne, L. Kornblueh, D. Matei, T. Mauritsen, U. Mikolajewicz, W. Müller, D. Notz, T. Pohlmann, T. Raddatz, S. Rast, E. Roeckner, M. Salzmann, H. Schmidt, R. Schnur, J. Segschneider, K. Six, M. Stockhause, J. Wegner, H. Widmann, K.-H. Wieners, M. Claussen, J. Marotzke, and B. Stevens https://doi.org/10.1594/WDCC/CMIP5.MXEPpk CCSM4 Last Millennium Simulation Earth System Grid at NCAR https://www.earthsystemgrid.org/dataset/cmip5.output1.NCAR.CCSM4.past1000.mon.atmos.Amon.r1i1p1.html 20th Century Reanalysis NOAA http://www.esrl.noaa.gov/psd/ Berkeley Earth Surface Tempearature Analysis Berkeley Earth http://berkeleyearth.org/data/ GISTEMP Surface Temperature Analysis GISTEMP Team, NASA GISS https://data.giss.nasa.gov/gistemp/ PAGES 2k phase 1 Proxy Database PAGES 2k Network https://www.ncdc.noaa.gov/paleo-search/study/14188 Code and Experiment Data for "Reconstructing paleoclimate fields using online data assimilation with a linear inverse model" W. A. Perkins and G. J. Hakim https://doi.org/10.6069/h5vd6wc0
Publications Copernicus
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Short summary
We examine the skill of a novel data assimilation approach to paleoclimate reconstruction that uses linear climate model forecasts. Many reconstruction studies forego the use of forecasts from climate models due to their high computational expense and relatively low skill. We show that the use of simpler linear models can improve reconstruction skill for both global mean temperature and spatial fields. Improvements displayed seem to be related to dynamical constraints from the forecasts.
We examine the skill of a novel data assimilation approach to paleoclimate reconstruction that...
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