@misc{indiciae17ac5d25179d,
  title = {The Gmao Hybrid 4d-Envar Observing System Simulation Experiment Framework.},
  author = {Amal El Akkraoui and Nikki C Privé and Ronald M Errico and Ricardo Todling},
  year = {2023},
  url = {https://ntrs.nasa.gov/citations/20230009886},
  note = {Source identifier: 20230009886}
}