# An Adjoint‐Free Alternating Direction Method for Four‐Dimensional Variational Data Assimilation With Multiple Parameter Tikhonov Regularization

> Research article (Earth and Space Science, 2020) · cited 13× · AI/ML

**Wikidata**: [openalex:W3095408925](https://www.wikidata.org/wiki/openalex:W3095408925)  
**Source**: https://4ort.xyz/entity/an-adjointfree-alternating-direction-method-for-fourdimensional-variational-data-assimilation-with-multiple-parameter-ti