Spatiotemporal Climate Variation and Analysis of Dry-Wet Trends for 1960–2019 in Jiangsu Province, Southeastern China

Table 1

Seasonal and annual trends of daily mean air temperature (T_a), wind speed (WS), relative humidity (RH), sunshine hours (SSH), precipitation (Pre), and reference evaporation (ET_o) in Huaibei (HB), Jianghuai (JH), Sunan (SN), and the entire Jiangsu province during 1960–2019 using the Mann–Kendall and Theil–Sen estimator tests.

Variable	Zone	Spring	Summer	Autumn	Winter	Growing season	Annual
Ta (°C/y)	HB	0.039	0.011	0.023	0.04	0.019	0.028
	JH	0.038	0.013	0.024	0.036	0.02	0.027
	SN	0.049	0.022	0.035	0.048	0.03	0.037
	Whole	0.041	0.015	0.026	0.036	0.022	0.029
WS (m/s/y)	HB	−0.027	−0.021	−0.02	−0.022	−0.021	−0.023
	JH	−0.021	−0.013	−0.016	−0.019	−0.014	−0.017
	SN	−0.019	−0.014	−0.015	−0.022	−0.014	−0.017
	Whole	−0.022	−0.015	−0.017	−0.021	−0.016	−0.019
RH (%/y)	HB	−0.106	−0.035^+	−0.046	−0.013	−0.035	−0.044
	JH	−0.164	−0.077	−0.073^+	−0.049	−0.088	−0.089
	SN	−0.223	−0.121	−0.139	−0.076	−0.159	−0.135
	Whole	−0.161	−0.078	−0.078	−0.047	−0.09	−0.084
SSH (h/y)	HB	−0.007	−0.036	−0.021	−0.027	−0.028	−0.023
	JH	0.005	−0.031	−0.013	−0.017	−0.02	−0.015
	SN	0.005	−0.036	−0.015	−0.02	−0.023	−0.018
	Whole	0.003	−0.033	−0.015	−0.02	−0.024	−0.018
Pre (mm/y)	HB	−0.33	−1.2	−0.17	0.64	−1.78	−1.55
	JH	−0.53	0.55	0.13	1.02	0.06	0.59
	SN	−0.52	1.84	0.19	1.7	1.68	2.8
	Whole	−0.45	0.44	0.09	1.07	0.23	0.53
ETo (mm/y)	HB	0.04	−0.82	−0.28	−0.19	−0.19	−1.37
	JH	0.65	−0.25	0.06	−0.01	0.003	0.33
	SN	1.04	−0.02	0.36	0.01	0.75	1.32
	Whole	0.56	−0.38	0.01	−0.04	−0.14	0.05

Note: , , , and ⁺ indicate significance levels of 0.001, 0.01, 0.05, and 0.1, respectively.