The Potential for Observing African Weather with GNSS Remote Sensing

Table 1

GRUAN GNSS product requirements (modified after [14]).

Variable	ZTD	ZWD	PWV	PS
Measurement range	1000–3000 mm	0–500 mm	0–8 mm	500–1100 hpa	20–300 k
Accuracy	4–6 mm	6 mm	0.1 mm	0.01 hpa	0.2 K
Precision	4–6 mm	6 mm	0.1 mm	0.5 hpa	0.1 K
Long-term stability	0.1–0.4 mm/dec	0.1–0.4 mm/dec	0.01–0.06 Kgm/dec	0.1 hpa/dec	0.05 K/dec
Temporal resolution	1 hr	1 hr	1 hr	1 hr	1 hr
Data latency	1 month	1 month	1 month	1 month	1 month