Spatial Patterns and Temporal Variability of Drought in Beijing-Tianjin-Hebei Metropolitan Areas in China

Table 1

Geographical descriptions mean and standard deviation of annual precipitation time series of the synoptic stations used in the study.

Station name	Longitude (E)	Latitude (N)	Elevation (m)	Mean (mm)	Standard deviation (mm)
Beijing	116.47	39.80	31.30	536.32	172.07
Zhangbei	114.70	41.15	1393.30	386.94	68.47
Weixian	114.57	39.83	909.50	398.88	88.09
Shijiazhuang	114.42	38.03	81.00	525.89	172.28
Xingtai	114.50	37.07	77.30	515.19	176.86
Fengning	116.63	41.22	661.20	458.04	89.55
Weichang	117.75	41.93	842.80	433.49	88.21
Zhangjiakou	114.88	40.78	724.20	399.00	91.85
Huailai	115.50	40.40	536.80	378.98	80.58
Chengde	117.95	40.98	385.90	518.28	108.71
Zunhua	117.95	40.20	54.90	711.88	201.17
Qinglong	118.95	40.40	227.50	691.79	190.63
Qinhuangdao	119.52	39.85	2.40	634.01	179.22
Bazhou	116.38	39.12	9.00	511.18	184.55
Tangshan	118.15	39.67	27.80	605.37	160.43
Laoting	118.88	39.43	10.50	600.22	176.73
Baoding	115.52	38.85	17.20	517.57	195.07
Raoyang	115.73	38.23	19.00	519.99	153.49
Cangzhou	116.83	38.33	9.60	610.09	194.76
Huanghua	117.35	38.37	6.60	589.70	196.37
Nangong	115.38	37.37	27.40	478.54	142.07
Anyang	114.40	36.05	62.90	561.60	169.20
Jianpingxian	119.70	41.38	422.00	459.86	107.01
Huade	114.00	41.90	1482.70	307.79	66.02
Duolun	116.47	42.18	1245.40	375.24	70.05
Dezhou	116.32	37.43	21.20	567.40	182.87
Huimin	117.53	37.48	11.70	572.64	172.16
Shenxian	115.67	36.23	37.80	539.63	158.65
Datong	113.33	40.10	1067.20	370.24	84.31
Wutaishan	113.52	38.95	2208.30	748.29	183.55
Yangquan	113.55	37.85	741.90	541.07	148.24
Tianjin	117.07	39.08	2.50	536.45	147.41
Tanggu	117.72	39.05	4.80	575.59	183.33