Precipitable Water Vapor Retrieval and Analysis by Multiple Data Sources: Ground-Based GNSS, Radio Occultation, Radiosonde, Microwave Satellite, and NWP Reanalysis Data

Table 4

Retrieved PWV precision statistic between FY3C, COSMIC, and ERA-Interim, ERA5.

		Mean bias (mm)	Mean RMSE (mm)
COSMIC RO sites	COSMIC-Interim	−2.3	4.5
	COSMIC-ERA5	−2.5	4.8
	Interim-ERA5	−0.1	2.0
FY3C RO sites	FY3C-Interim	0.9	3.6
	FY3C-ERA5	1.0	3.8
	Interim-ERA5	0.1	1.9