|Title||Use of in situ surface observations at ECMWF|
|Publication Type||Technical memorandum|
|Secondary Title||ECMWF Technical Memoranda|
|Authors||Haiden, T, Dahoui, M, Ingleby, B, de Rosnay, P, Prates, C, Kuscu, E, Hewson, T, Isaksen, L, Richardson, D, Zuo, H, Jones, L|
This document summarises the use in data assimilation and verification of in situ surface observations at ECMWF, with a focus on data quality monitoring aspects. The discussion includes observations received via the GTS, high-density observations from Member and Co-operating States, and highlights opportunities and challenges associated with citizen observations and other non-standard datasets.