Table S1. Weekly isotopic compositions in precipitation and precipitation amount on Okinawa Island						
Sampling start date (Y/M/D)	Sampling end date (Y/M/D)	Precipitation (mm)	d17O (permil vs VSMOW)	d18O(permil vs VSMOW)	dD(permil vs VSMOW)	17O-excess (per meg)
2011/1/4	2011/1/11	4.0	-0.8628	-1.7082	9.2899	40
2011/1/11	2011/1/17	29.6	-1.6408	-3.1712	0.2389	35
2011/1/17	2011/1/24	13.2	-1.7676	-3.4245	-6.6410	42
2011/1/24	2011/1/31	53.4	-1.6065	-3.1083	0.6539	36
2011/1/31	2011/2/7	67.8	-1.4519	-2.8069	-1.5968	31
2011/2/7	2011/2/14	45.9	-1.7005	-3.2638	-7.9377	24
2011/2/14	2011/2/21	23.4	-1.8876	-3.6417	-7.0296	37
2011/2/21	2011/2/28	21.6	-0.5277	-1.0488	6.2368	26
2011/2/28	2011/3/7	19.4	-2.1614	-4.1646	-13.0512	40
2011/3/7	2011/3/14	7.0	-1.0911	-2.1369	2.2360	38
2011/3/14	2011/3/22	3.9	-1.2570	-2.4202	-5.9113	22
2011/3/22	2011/4/11	2.3	-0.9833	-1.9141	2.7203	28
2011/4/11	2011/4/18	9.8	-0.9340	-1.8002	-1.4786	17
2011/4/18	2011/4/25	15.4	-2.0062	-3.8610	-14.2942	34
2011/4/25	2011/5/2	72.6	-2.4720	-4.7459	-29.9910	37
2011/5/2	2011/5/9	42.2	-2.2463	-4.2858	-25.3676	19
2011/5/9	2011/5/16	74.3	-2.6104	-4.9568	-30.4512	10
2011/5/16	2011/5/23	98.7	-2.8279	-5.3892	-32.5031	21
2011/5/23	2011/5/30	74.0	-2.7906	-5.3025	-33.0804	13
2011/5/30	2011/6/6	161.2	-3.9368	-7.4906	-49.1145	25
2011/6/6	2011/6/20	2.7	-0.7730	-1.4930	-3.8545	16
2011/6/20	2011/6/27	97.9	-4.6482	-8.8008	-62.7425	8
2011/6/27	2011/7/4	5.2	-2.1422	-4.1073	-22.5347	29
2011/7/4	2011/7/11	12.2	-4.0366	-7.6684	-52.0412	20
2011/7/11	2011/7/19	28.2	-3.8649	-7.3248	-48.1245	9
2011/7/19	2011/7/25	20.4	-3.4108	-6.4906	-43.6200	22
2011/7/25	2011/8/1	12.4	-2.8615	-5.4565	-33.7296	23
2011/8/1	2011/8/8	449.0	-4.6101	-8.7323	-62.6469	10
2011/8/8	2011/8/22	1.3	-1.2163	-2.3300	-8.3915	15
2011/8/22	2011/8/29	22.2	-2.4332	-4.6275	-27.9346	13
2011/8/29	2011/9/12	3.7	-1.6646	-3.1854	-11.7146	19
2011/9/12	2011/9/20	39.7	-2.2120	-4.2192	-27.4138	18
2011/9/20	2011/9/26	2.0	-1.1838	-2.2591	-5.7097	10
2011/9/26	2011/10/3	4.3	-1.4080	-2.7103	-6.3992	24
2011/10/3	2011/10/6	115.2	-2.3978	-4.5696	-24.1827	18
2011/10/6	2011/10/11	103.1	-3.0627	-5.8488	-35.0015	30
2011/10/11	2011/10/17	47.4	-3.9237	-7.4648	-50.8995	25
2011/10/17	2011/10/24	2.9	-2.9207	-5.5444	-36.7921	11
2011/10/24	2011/11/7	100.4	-1.9773	-3.7841	-19.2722	23
2011/11/7	2011/11/14	186.0	-2.6080	-4.9931	-26.6433	32
2011/11/14	2011/11/21	33.5	-2.8302	-5.4024	-31.6873	26
2011/11/21	2011/11/28	18.4	-3.8893	-7.4101	-50.5642	30
2011/11/28	2011/12/5	45.7	-4.8485	-9.2325	-64.8834	37
2011/12/5	2011/12/12	23.0	-2.0211	-3.8941	-12.7520	37
2011/12/12	2011/12/19	36.9	-1.7874	-3.4414	-2.2158	31
2011/12/19	2011/12/26	21.1	-1.6220	-3.1251	-3.4032	29
2011/12/26	2012/1/4	8.2	-1.5155	-2.9397	5.2700	38
2012/1/4	2012/1/10	31.7	-1.4725	-2.8555	0.7066	36
2012/1/10	2012/1/16	37.2	-2.5415	-4.8464	-20.4481	20
2012/1/16	2012/1/23	28.4	-1.8396	-3.5509	-11.0158	37
2012/1/23	2012/1/30	46.9	-1.9779	-3.8169	-5.0022	39
2012/1/30	2012/2/6	7.9	-1.9846	-3.8415	-7.2428	46
2012/2/6	2012/2/13	14.5	-2.3434	-4.4854	-19.4326	27
2012/2/13	2012/2/20	6.8	-1.6377	-3.1389	-10.2452	21
2012/2/20	2012/2/27	81.6	-3.9830	-7.5693	-47.7713	21
2012/2/27	2012/3/5	48.6	-1.3923	-2.6983	-7.1347	33
2012/3/5	2012/3/12	35.3	-1.0859	-2.1178	-3.7402	33
2012/3/12	2012/3/19	16.4	-1.0132	-2.0030	9.8830	45
2012/3/19	2012/3/26	19.4	-1.7380	-3.3440	-10.8941	29
2012/3/26	2012/4/2	5.7	-1.8914	-3.6338	-10.2403	29
2012/4/2	2012/4/9	4.5	-0.8720	-1.6893	1.2578	20
2012/4/9	2012/4/16	61.1	-1.6995	-3.2851	-14.8893	36
2012/4/16	2012/4/23	220.0	-2.5605	-4.9062	-26.6406	33
2012/4/23	2012/5/2	98.4	-2.1060	-4.0129	-20.6647	15
2012/5/2	2012/5/7	26.2	-3.3126	-6.2849	-37.5767	11
2012/5/7	2012/5/14	26.7	-1.1640	-2.2720	-4.1698	36
2012/5/14	2012/5/21	148.1	-4.7506	-9.0277	-60.5024	26
2012/5/21	2012/5/28	3.0	-1.4397	-2.7897	-13.8295	34
2012/5/28	2012/6/4	48.7	-3.9348	-7.4948	-48.9365	30
2012/6/4	2012/6/11	33.9	-3.7546	-7.1265	-48.7642	15
2012/6/11	2012/6/18	131.9	-3.1390	-5.9480	-40.6157	6
2012/6/18	2012/6/25	155.4	-4.4773	-8.5047	-58.2278	22
2012/6/25	2012/7/2	5.0	-2.0566	-3.9379	-23.7876	25
2012/7/2	2012/7/9	31.4	-4.8284	-9.1626	-59.7501	20
2012/7/9	2012/7/17	16.6	-3.4891	-6.6047	-44.9014	4
2012/7/17	2012/7/23	19.9	-2.9271	-5.5588	-35.0790	12
2012/7/23	2012/7/30	4.5	-2.1813	-4.1642	-23.3288	20
2012/7/30	2012/8/6	305.0	-4.6606	-8.8371	-62.0512	15
2012/8/6	2012/8/13	52.2	-2.3429	-4.4578	-28.1354	13
2012/8/13	2012/8/17	17.2	-2.9410	-5.5796	-35.8114	9
2012/8/17	2012/8/24	32.9	-3.4725	-6.6043	-42.9801	20
2012/8/24	2012/8/28	274.0	-4.1893	-7.9369	-54.6885	9
2012/8/28	2012/9/3	3.8	-2.0874	-3.9900	-24.5138	21
2012/9/3	2012/9/10	12.8	-1.8911	-3.6322	-17.4358	28
2012/9/10	2012/9/18	161.0	-4.3945	-8.3463	-56.7834	21
2012/9/18	2012/9/14	40.1	-2.0532	-3.9316	-12.1197	25
2012/9/14	2012/10/1	84.4	-3.5486	-6.7229	-44.8064	7
2012/10/1	2012/10/22	87.8	-5.2159	-9.8829	-72.8362	15
2012/10/22	2012/11/5	97.4	-3.0187	-5.7788	-27.2890	37
2012/11/5	2012/11/12	32.3	-3.0258	-5.7631	-30.5628	21
2012/11/12	2012/11/19	21.6	-3.6068	-6.8859	-40.1615	35
2012/11/19	2012/11/26	19.0	-2.6292	-5.0293	-26.5245	30
2012/11/26	2012/12/3	130.8	-2.9589	-5.6870	-27.4023	48
2012/12/3	2012/12/10	45.4	-3.5800	-6.8716	-31.1656	54
2012/12/10	2012/12/25	3.7	-1.3737	-2.6633	0.6812	33