Severe weather disasters in China linked to solar activity during 1-1825 Common Era

Liu, Jann-Yenq; Chen, Yuh-Ing; Lee, Po-Han; Huang, Chi-Shen; Fang, Tzu-Wei

doi:10.1186/s40562-021-00210-x

Geoscience Letters

Official Journal of the Asia Oceania Geosciences Society (AOGS)

Table 2 Proportion and confidence interval of the severe weather disaster

From: Severe weather disasters in China linked to solar activity during 1-1825 Common Era

Item	8 LSA-HSA periods (Series LH)				8 HSA-LSA periods (Series HL)
Item	PL	PH	LB	UB	PL	PH	LB	UB
Anomalous temperature
Severe cold winter	0.0306	0.0167	0.004	0.023	0.0331	0.0167	0.006	0.026
Cool equinox/summer	0.0623	0.0585	− 0.011	0.019	0.0713	0.0585	− 0.003	0.029
Frosty/icy plant	0.0353	0.0299	− 0.006	0.016	0.0408	0.0299	− 0.001	0.023
“ Frozen well/lake/river	0.0411	0.0143	0.017	0.037	0.0459	0.0143	0.021	0.042
Subtotal of the cold	0.1457	0.1099	0.015	0.057	0.1656	0.1099	0.034	0.078
Harsh hot summer	0.0035	0.0048	− 0.005	0.003	0.0038	0.0048	− 0.005	0.003
Warm equinox/winter	0.0059	0.0143	− 0.015	− 0.002	0.0076	0.0143	− 0.013	− 0.001
Subtotal of the hot	0.0094	0.0191	− 0.017	− 0.002	0.0115	0.0191	− 0.015	0.001
Total of the temperature	0.1528	0.1243	0.009	0.056	0.1745	0.1243	0.028	0.073
Irregular precipitation
Torrential rain	0.0776	0.0585	0.003	0.035	0.0866	0.0585	0.015	0.049
Heavy snow	0.0552	0.0394	0.003	0.029	0.0675	0.0394	0.014	0.042
Heavy hail	0.0564	0.0323	0.011	0.037	0.0611	0.0323	0.015	0.042
Subtotal of the wet	0.1704	0.1183	0.030	0.074	0.1962	0.1183	0.055	0.101
Severe drought	0.1293	0.1147	− 0.006	0.035	0.1376	0.1147	0.002	0.034
Total of the precipitation	0.2632	0.2162	0.020	0.074	0.2943	0.2162	0.050	0.106
Flood
NorthEast River Basin	0.0165	0.0072	0.003	0.016	0.0191	0.0072	0.005	0.019
Yellow River Basin	0.2174	0.1314	0.063	0.109	0.2382	0.1314	0.082	0.131
Haihe River Basin	0.0905	0.0502	0.024	0.056	0.1146	0.0502	0.047	0.082
Yangtze River Basin	0.1398	0.1314	− 0.013	0.030	0.1643	0.1314	0.010	0.055
Tibet Basin	0.0059	0.0036	− 0.002	0.007	0.0140	0.0036	0.004	0.016
Taihu Lake Basin	0.0317	0.0311	− 0.010	0.012	0.0369	0.0311	− 0.006	0.017
Subtotal of the inland	0.3572	0.2820	0.046	0.104	0.4089	0.2820	0.097	0.157
South East River Basin	0.0447	0.0800	− 0.055	− 0.016	0.0510	0.0800	− 0.045	− 0.013
Pearl River Basin	0.0153	0.0167	− 0.009	0.006	0.0166	0.0167	− 0.008	0.008
Huai River Basin	0.0212	0.0275	− 0.016	0.003	0.0229	0.0275	− 0.015	0.005
Subtotal of the coastal	0.0787	0.1207	− 0.061	− 0.023	0.0879	0.1207	− 0.052	− 0.013
Total of the flood	0.3960	0.3262	0.040	0.100	0.4497	0.3262	0.093	0.154
Total of the disaster	0.6178	0.4839	0.094	0.174	0.6021	0.5134	0.046	0.131

^#bold numbers denote the differences of proportions being significant in the LSA and HSA period, respectively. Series LH LSA leading cycles. Series HL HSA leading cycles

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