The Historical Development of Large‐Scale Paleoclimate Field Reconstructions Over the Common Era

JE Smerdon, ER Cook, NJ Steiger - Reviews of Geophysics, 2023 - Wiley Online Library
Climate field reconstructions (CFRs) combine modern observational data with paleoclimatic
proxies to estimate climate variables over spatiotemporal grids during time periods when …

Stable water isotopes in climatology, meteorology, and hydrology: A review

K Yoshimura - Journal of the Meteorological Society of Japan. Ser. II, 2015 - jstage.jst.go.jp
Recent advancements in the measurement and modeling of heavy stable water isotopes (ie,
H2 18O and HDO), especially in situ and remote sensing spectroscopic vapor isotope …

The last millennium climate reanalysis project: Framework and first results

GJ Hakim, J Emile‐Geay, EJ Steig… - Journal of …, 2016 - Wiley Online Library
An “offline” approach to DA is used, where static ensemble samples are drawn from existing
CMIP climate‐model simulations to serve as the prior estimate of climate variables. We use …

[HTML][HTML] Assimilation of time-averaged pseudoproxies for climate reconstruction

NJ Steiger, GJ Hakim, EJ Steig, DS Battisti… - Journal of …, 2014 - journals.ametsoc.org
Assimilation of Time-Averaged Pseudoproxies for Climate Reconstruction in: Journal of Climate
Volume 27 Issue 1 (2014) Jump to Content Jump to Main Navigation Logo Logo Logo Logo …

On the utility of proxy system models for estimating climate states over the common era

SG Dee, NJ Steiger, J Emile‐Geay… - Journal of Advances in …, 2016 - Wiley Online Library
Paleoclimate data assimilation has recently emerged as a promising technique to estimate
past climate states. Here we test two of the underlying assumptions of paleoclimate data …

On-line and off-line data assimilation in palaeoclimatology: a case study

A Matsikaris, M Widmann, J Jungclaus - Climate of the Past, 2015 - cp.copernicus.org
Different ensemble-based data assimilation (DA) approaches for palaeoclimate
reconstructions have been recently undertaken, but no systematic comparison among them …

FYRE Climate: a high-resolution reanalysis of daily precipitation and temperature in France from 1871 to 2012

A Devers, JP Vidal, C Lauvernet, O Vannier - Climate of the Past, 2021 - cp.copernicus.org
Surface observations are usually too few and far between to properly assess multidecadal
variations at the local scale and characterize historical local extreme events at the same …

Reconstructing the tropical Pacific upper ocean using online data assimilation with a deep learning model

Z Meng, GJ Hakim - Journal of Advances in Modeling Earth …, 2024 - Wiley Online Library
A deep learning (DL) model, based on a transformer architecture, is trained on a climate‐
model data set and compared with a standard linear inverse model (LIM) in the tropical …

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 …

[HTML][HTML] Strongly coupled data assimilation using leading averaged coupled covariance (LACC). Part I: Simple model study

F Lu, Z Liu, S Zhang, Y Liu - Monthly Weather Review, 2015 - journals.ametsoc.org
This paper studies a new leading averaged coupled covariance (LACC) method for the
strongly coupled data assimilation (SCDA). The SCDA not only uses the coupled model to …