Last Millennium Reanalysis with an expanded proxy database and seasonal proxy modeling

R Tardif, GJ Hakim, WA Perkins, KA Horlick… - Climate of the …, 2019 - cp.copernicus.org
The Last Millennium Reanalysis (LMR) utilizes an ensemble methodology to assimilate
paleoclimate data for the production of annually resolved climate field reconstructions of the …

[HTML][HTML] A data assimilation approach to last millennium temperature field reconstruction using a limited high-sensitivity proxy network

JM King, KJ Anchukaitis, JE Tierney… - Journal of …, 2021 - journals.ametsoc.org
Abstract We use the Northern Hemisphere Tree-Ring Network Development (NTREND) tree-
ring database to examine the effects of using a small, highly sensitive proxy network for …

A local particle filter and its Gaussian mixture extension implemented with minor modifications to the LETKF

S Kotsuki, T Miyoshi, K Kondo… - Geoscientific Model …, 2022 - gmd.copernicus.org
A particle filter (PF) is an ensemble data assimilation method that does not assume
Gaussian error distributions. Recent studies proposed local PFs (LPFs), which use …

cfr (v2024.1.26): a Python package for climate field reconstruction

F Zhu, J Emile-Geay, GJ Hakim… - Geoscientific Model …, 2024 - gmd.copernicus.org
Climate field reconstruction (CFR) refers to the estimation of spatiotemporal climate fields
(such as surface temperature) from a collection of pointwise paleoclimate proxy datasets …

DASH: a MATLAB toolbox for paleoclimate data assimilation

J King, J Tierney, M Osman, EJ Judd… - Geoscientific Model …, 2023 - gmd.copernicus.org
Paleoclimate data assimilation (DA) is a tool for reconstructing past climates that directly
integrates proxy records with climate model output. Despite the potential for DA to expand …

A pseudoproxy assessment of data assimilation for reconstructing the atmosphere–ocean dynamics of hydroclimate extremes

NJ Steiger, JE Smerdon - Climate of the Past, 2017 - cp.copernicus.org
Because of the relatively brief observational record, the climate dynamics that drive
multiyear to centennial hydroclimate variability are not adequately characterized and …

Towards high-resolution climate reconstruction using an off-line data assimilation and COSMO-CLM 5.00 model

B Fallah, E Russo, W Acevedo, A Mauri… - Climate of the …, 2018 - cp.copernicus.org
Data assimilation (DA) methods have been used recently to constrain the climate model
forecasts by paleo-proxy records. Both DA and climate models are computationally very …

[HTML][HTML] Using a process-based dendroclimatic proxy system model in a data assimilation framework: a test case in the Southern Hemisphere over the past centuries

J Rezsöhazy, Q Dalaiden, F Klein, H Goosse… - Climate of the …, 2022 - cp.copernicus.org
Currently available data-assimilation-based reconstructions of past climate variations have
only used statistical proxy system models to make the link between climate model outputs …

Evaluation of iterative Kalman smoother schemes for multi-decadal past climate analysis with comprehensive Earth system models

J García-Pintado, A Paul - Geoscientific Model Development, 2018 - gmd.copernicus.org
Paleoclimate reconstruction based on assimilation of proxy observations requires
specification of the control variables and their background statistics. As opposed to …