@inbook{81268,
  author = {ECMWF},
  title = {IFS Documentation CY47R3 - Part I: Observations},
  abstract = {<p>
  Chapter 1 Overview : The observation world<br />Chapter 2 Preparation of observations<br />Chapter 3 Observation operators<br />Chapter 4 Screening<br />Chapter 5 Deprecated areas<br />Chapter 6 Tables, codes and flags</p>
},
  year = {2021},
  journal = {IFS Documentation CY47R3},
  number = {1},
  month = {10/2021},
  publisher = {ECMWF},
  url = {https://www.ecmwf.int/node/20195},
  doi = {10.21957/ycow5yjr1},
  language = {eng},
}