Effects of Climate Variability on Evaporation in Dongping Lake, China, during 2003–2010

Table 8

𝑍 values of M-K tests on rate of monthly evaporation change, air and lake temperature, air humidity, and wind velocity.

	March	April	May	June	July	August	September	October	November
Air temperature	0.25	−1.24	1.98^b	0	0.99	1.24	0.50	1.73^a	0.50
Change of rate (°C)	0.09	−0.12	0.24	0.05	0.09	0.20	0.05	0.34	0.03
Air humidity	−1.98^b	0.25	−0.25	0	1.48^a	0.25	0.25	2.23^b	0
Change of rate	−0.02	0.00	0.00	0.00	0.014	0.005	0.002	0.014	−0.002
Wind velocity	0.74	0.74	−0.74	−1.24	0	−1.48^a	−0.25	−0.50	1.98^b
Change of rate (m/s)	0.02	0.05	−0.09	−0.09	−0.02	−0.01	−0.01	−0.002	0.16
Net radiation	0.99	0	2.72^c	1.98^b	2.47^c	1.48^a	1.24	2.48^c	1.04
Change of rate (w/m^2)	12.45	1.43	11.60	16.34	11.02	14.93	10.19	18.38	11.73

Remark: a, b, and c mean passing the 90%, 95%, and 99% confidence levels.