Quantifying structural uncertainty in paleoclimate data assimilation with an application to the last millennium

DE Amrhein, GJ Hakim… - Geophysical Research …, 2020 - Wiley Online Library
Paleoclimate reconstruction relies on estimates of spatiotemporal relationships among
climate quantities to interpolate between proxy data. This work quantifies how structural …

Coupled atmosphere–ocean reconstruction of the last millennium using online data assimilation

WA Perkins, GJ Hakim - Paleoceanography and …, 2021 - Wiley Online Library
We use online data assimilation to combine information from a linear inverse model of
coupled atmosphere‐ocean dynamics with proxy records to create a new annual‐resolution …

Monthly Arctic Sea‐Ice Prediction With a Linear Inverse Model

MK Brennan, GJ Hakim… - Geophysical …, 2023 - Wiley Online Library
Abstract We evaluate Linear Inverse Models (LIMs) trained on last millennium model data to
predict Arctic sea‐ice concentration, thickness, and other atmospheric and oceanic variables …

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 …

Intrinsic Century‐Scale Variability in Tropical Pacific Sea Surface Temperatures and Their Influence on Western US Hydroclimate

CP Evans, S Coats, CM Carrillo, X Li… - Geophysical …, 2022 - Wiley Online Library
Hydroclimate variability of the southwest United States (SWUS) is influenced by the tropical
Pacific Ocean, particularly through the teleconnection to El Niño/Southern Oscillation …

Last millennium ENSO diversity and North American teleconnections: New insights from paleoclimate data assimilation

X Luo, S Dee, S Stevenson, Y Okumura… - Paleoceanography …, 2022 - Wiley Online Library
Abstract El Niño‐Southern Oscillation (ENSO) variability affects year‐to‐year changes in
North American hydroclimate. Extra‐tropical teleconnections are not always consistent …

On the Cyclostationary Linear Inverse Models: A Mathematical Insight and Implication

J Lien, YN Kuo, H Ando - arXiv preprint arXiv:2407.10931, 2024 - arxiv.org
Cyclostationary linear inverse models (CS-LIMs), generalized versions of the classical
(stationary) LIM, are advanced data-driven techniques for extracting the first-order time …

A Statistical Forecast Model for Extratropical Cyclones Including Intensity and Precipitation Type

R Cavanagh, ECJ Oliver - Monthly Weather Review, 2023 - journals.ametsoc.org
Winter extratropical cyclones (ETCs) are dominant features of winter weather on the east
coast of North America. These storms are characterized by high winds and heavy …

Large ensemble particle filter for spatial climate reconstructions using a linear inverse model

B Jebri, M Khodri - Journal of Advances in Modeling Earth …, 2023 - Wiley Online Library
Proxy records that document the last 2000 years of climate provide evidence for the wide
range of the natural climate variability from inter‐annual to secular timescales not captured …

Reconstructing the Tropical Pacific Upper Ocean using Online Data Assimilation with a Deep Learning model

Z Meng, GJ Hakim - arXiv preprint arXiv:2406.07063, 2024 - arxiv.org
A deep learning (DL) model, based on a transformer architecture, is trained on a climate-
model dataset and compared with a standard linear inverse model (LIM) in the tropical …