Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-16T10:35:51.782446Z
Paper Citation Record · LEDGER
As of 16 August 2026, this Paper Citation Record lists 50 of 50 outbound references and 0 inbound Pith citation observations for arXiv:2504.17900.
A citation records a reference. It does not transfer a finding from one paper to another.
Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-16T10:35:51.782446Z
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-16T06:30:59.297886+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links
A source-named dated measurement, never combined with another source.
Source: cited_works
50 of 50 outbound references displayed
External citation measurements
No source-named external measurement is stored.
Observation 2b3f7986-540b-4af2-b7e7-e65fbbf16a40 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation A monte carlo implementation of the nonlinear filtering problem to produce ensemble assimilations and forecasts
Reference 1
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation ca460835-4815-4ecf-ac19-5ce280cb82cc · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Parameter estimation and inverse problems
Reference 2
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 92ddedc3-b8ca-4481-a67a-2c7d363c27da · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation A review of operational methods of variational and ensemble-variational 26 S
Reference 3
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 704b022a-680b-4e8e-8a20-e98b17340ac9 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Aerosol analysis and forecast in the european centre for medium- range weather forecasts integrated forecast system: 2
Reference 4
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation fe5937ff-4827-4da3-8e03-422159f35e8d · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Inverse methods in physical oceanography
Reference 5
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation d1314467-25b9-46b1-8f12-eeadb065284b · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Inverse modeling of the ocean and atmosphere
Reference 6
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation f9b9bfaf-5d4d-4ed5-88fe-dc3fcb4d5d01 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Generalized inversion of a global numerical weather prediction model
Reference 7
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation ec870869-11b6-4db5-a62c-94e1837e686f · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Multi- parameter regularization techniques for ill-conditioned linear systems
Reference 8
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation a279e587-49f4-4ccd-97f0-b39546176dbd · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Data assimilation in the geosciences: An overview of methods, issues, and perspectives
Reference 9
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation f4bb22db-3632-42b2-9ec7-3a64bc3540ad · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation A strategy for operational implementation of 4d-var, using an incremental approach
Reference 10
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 12d58b95-a9a9-46d8-8f24-b36c84cbaf53 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Topex/poseidon tides estimated using a global invese model
Reference 11
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 0fc9b9c8-01ad-44c9-a132-638f1a84fad5 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Using the l–curve for determining optimal regularization parameters
Reference 12
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation e5886125-8f67-4c1a-a284-b8f0ef8c73d4 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Inverse methods and data assimilation in nonlinear ocean models
Reference 13
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation e3308a29-da5a-4b1a-9ee7-eafe04fbb21d · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Sequential data assimilation with a nonlinear quasi-geostrophic model using monte carlo methods to forecast error statistics
Reference 14
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 010d0b0e-b24b-4c93-a7b0-8267620cad38 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Rank issues
Reference 15
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 395401a9-45a9-42a4-9e26-f241b8eac0bf · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Weak-constraint and long-window 4d-var
Reference 16
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 8b8d186e-a7aa-4099-a86b-0a276e093737 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Tikhonov regularization and total least squares
Reference 17
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation faa90086-3063-441e-9638-eda70899dd23 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Generalized cross-validation as a method for choosing a good ridge parameter
Reference 18
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation ef375dc1-8735-4d0f-aa21-c53cc438e9a7 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Novel approach to nonlinear/non- gaussian bayesian state estimation
Reference 19
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation c3732d76-1609-43ba-9c96-51c92cdc799c · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation The l-curve and its use in the numerical treatment of inverse problems
Reference 20
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation eacdd515-a87c-4c63-a533-ca792fc33bf2 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation The elements of statistical learning, 2009
Reference 21
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 4c0741ec-2d70-4e8a-bfa5-33ba2971606f · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Data assimilation for numerical smoke prediction
Reference 22
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation ff1e6586-b0c5-414f-952d-e50d3918c575 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Selecting the corner in the l-curve approach to tikhonov regularization
Reference 23
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 7f3e497e-6516-4c52-b66e-01d8c49072ee · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation A new approach to linear filtering and prediction problems
Reference 24
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 963d287e-5d3f-476f-9444-3984d75abe7a · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Atmospheric modeling, data assimilation and predictability
Reference 25
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 86b9f7e7-8fcc-40dd-a5dc-b07f82975b07 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Variational algorithms for analysis and assim- ilation of meteorological observations: theoretical aspects
Reference 26
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 5ec9c997-8482-4a4e-abe1-cccc12db4f83 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Finite volume methods for hyperbolic problems , volume 31
Reference 27
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation c85bb35e-fa57-4266-91cf-0b35bdaac1ff · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation From stein’s unbiased risk estimates to the method of generalized cross validation
Reference 28
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 0d111911-4981-451c-887e-b519c1371591 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Unresolved cited work
Reference 29
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation c1df0bd5-be3e-4b22-9fe1-e79b13186b80 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Unresolved cited work
Reference 30
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation f6b646e0-3e5d-4649-9625-910cebdb6574 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Unresolved cited work
Reference 31
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 49d26c80-6c63-45db-b9be-09c9f31c6cf2 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Mead and C.C
Reference 32
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 410341c1-8533-4b1f-a5b2-cbe6ca599c7f · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Discontinuous parameter estimates with least squares estimators
Reference 33
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 3247b4ad-6dfb-47f2-9225-583bf9417976 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Efficient implementation of covariance multiplication for data assimilation with the representer method
Reference 34
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 80cfa2b1-8453-40dc-bc0a-843d91bc92ba · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Nonlinear conditional model bias estimation for data assimilation
Reference 35
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation c32f0651-f933-4004-94d6-da912e347934 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Data assimilation with the weighted ensemble kalman filter
Reference 36
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 558c0cec-9d9a-439d-b98a-7b663cbe36ab · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Four-dimensional data assimilation: Compari- son of variational and sequential algorithms
Reference 37
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation be60b49f-fe89-41e3-bf03-8a66156c5442 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Unresolved cited work
Reference 38
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation ab22d5be-bd9f-4916-b12d-9c8cb3cd8b1f · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Inverse Problems and Data Assimilation
Reference 39
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 7ee58ed8-8218-4028-809c-399326d6132a · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation A generalized representer theorem
Reference 40
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 9d2624bd-2366-487c-b4b7-c9698b007c1f · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation A review of innovation-based methods to jointly estimate model and observation error covariance matrices in ensemble data assimilation
Reference 41
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 7b18d727-ffa3-435a-bcd5-d1eb8be56252 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Solutions of ill-posed problems
Reference 42
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 2a061e6f-9d38-46c8-85d6-ac7ce08e96d2 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Accounting for an imperfect model in 4d-var
Reference 43
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation a65b3446-cd5f-4a0d-8c80-a84e39b2223c · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Model-error estimation in 4d-var
Reference 44
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 5778efbb-f7b5-4a1b-a89d-a549e28ab7e1 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Variational data analysis with control of the forecast bias
Reference 45
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 1cc1369f-0419-4cc5-8c06-f5cf1db176f3 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Non-convergence of the l-curve regularization parameter selection method
Reference 46
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 7eef5e00-c728-474f-99b5-05546a1a1ba2 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Spline models for observational data
Reference 47
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 47071343-7408-4e21-8c9c-626175d0fb88 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Representer theorem
Reference 48
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation be8e7a54-b76f-42f8-8569-b902f6bd244d · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation Inverse methods in hydrogeology: Evolution and recent trends
Reference 49
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation ec3b4c2b-4bac-4157-94c9-5ddf1a4d2be1 · outbound
Model Error Covariance Estimation for Weak Constraint Data Assimilation A general weak constraint applicable to operational 4dvar data assimilation systems
Reference 50
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
No inbound Pith citation observations are available.