@misc{indiciaedaa391ba0e88,
  title = {The GMAO Hybrid Ensemble-Variational Atmospheric Data Assimilation System: Version 2.0},
  author = {Todling, Ricardo and El Akkraoui, Amal},
  year = {2018},
  url = {https://ntrs.nasa.gov/citations/20180002172},
  note = {Source identifier: 20180002172}
}