Articles | Volume 14, issue 12
Atmos. Meas. Tech., 14, 7821–7834, 2021
https://doi.org/10.5194/amt-14-7821-2021

Special issue: Analysis of atmospheric water vapour observations and their...

Atmos. Meas. Tech., 14, 7821–7834, 2021
https://doi.org/10.5194/amt-14-7821-2021
Research article
16 Dec 2021
Research article | 16 Dec 2021

Global evaluation of the precipitable-water-vapor product from MERSI-II (Medium Resolution Spectral Imager) on board the Fengyun-3D satellite

Wengang Zhang​​​​​​​ et al.

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Short summary
Global precipitable water vapor (PWV) derived from MERSI-II (Medium Resolution Spectral Imager) is compared with PWV from the Integrated Global Radiosonde Archive (IGRA). Our results show a good agreement between PWV from MERSI-II and IGRA and that MERSI-II PWV is slightly underestimated on the whole, especially in summer. The bias between MERSI-II and IGRA grows with a larger spatial distance between the footprint of the satellite and the IGRA station, as well as increasing PWV.