# Hughes - Tuolumne Grove - SEGI - ITRDB CA704
#----------------------------------------------------
#                World Data Service for Paleoclimatology, Boulder
#                                  and
#                     NOAA Paleoclimatology Program
#             National Centers for Environmental Information (NCEI)
#----------------------------------------------------
# Template Version 4.0
# Encoding: UTF-8
# NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed.
#
# Description/Documentation lines begin with #
# Data lines have no #
#
# NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/32173
#   Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata.
#
# Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-tree-32173.json
#   Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata.
#
# Data_Type: Tree Ring
#
# Dataset_DOI:
#
# Science_Keywords: 
#--------------------
# Resource_Links
#
# Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/ca704-crn-noaa.txt
#   Data_Download_Description: Raw Measurements - NOAA Template File; ca704-crn-noaa.txt
#
# Related_Online_Resource: https://www.ncei.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/ca704.crn
#   Related_Online_Description: CRN File; Chronology - Tucson Decadal File
#
#--------------------
# Contribution_Date
#   Date: 2021-01-03
#--------------------
# File_Last_Modified_Date
#   Date: 2021-01-03
#--------------------
# Title
#   Study_Name: Hughes - Tuolumne Grove - SEGI - ITRDB CA704
#--------------------
# Investigators
#   Investigators: Hughes, M.K.(https://orcid.org/0000-0003-1062-3167); Touchan, R.
#--------------------
# Description_Notes_and_Keywords
#   Description: NOAA Template Raw Measurements file added 2021-02-22.
#--------------------
# Publication
#   Authors: R. Touchan, B. Black, E. Shamir, M.K. Hughes, and D.M. Meko
#   Journal_Name: Climate Dynamics
#   Published_Title: A multimillennial snow water equivalent reconstruction from giant sequoia tree rings
#   Published_Date_or_Year: 2021
#   Volume: 
#   Pages: 
#   Issue: 
#   Report_Number: 
#   DOI: 10.1007/s00382-020-05548-0
#   Full_Citation: None
#   Abstract: The first dendroclimatic reconstruction of May 1 snow water equivalent (SWE) was developed from a Sequoiadendron giganteum regional tree-ring chronology network of 23 sites in central California for the period 90-2012 CE. The reconstruction is based on a significant relationship between May 1 SWE and tree-ring growth and shows climate variability from interannual to intercentennial time scales. A regression-based reconstruction equation explains up to 55% of the variance of SWE for 1940-2012. Split-sample validation supports our use of a reconstruction model based on the full period of reliable observational data (1940-2012). Thresholds for May 1 SWE low (15 percentile) and high (80 percentile) years were selected based on the exploratory scatterplots relationship between observed and reconstructed data for the period 1940-2012. The longest period of consecutive low-SWE years in the reconstruction is 2 years and the frequency of the lowest SWE years is highest during the period 710-809 CE. The longest high-SWE period, defined by consecutive wet years, is 3 years (558-560 CE). SWE and its reconstruction positively correlate with northeastern Pacific sea surface temperatures, the low-frequency variability of which may provide some predictive ability. Ultimately, the instrumental record and reconstruction suggest that unlike other sites in the region, twentieth century SWE variability in these Sequoia groves has remained within historical boundaries and relatively buffered from extremes and severe declines, though this is likely to change in coming decades with potentially negative effects on water availability for these trees.
#--------------------
# Funding_Agency
#   Funding_Agency_Name:
#   Grant:
#--------------------
# Site_Information
#   Site_Name: Tuolumne Grove
#   Location: California
#   Northernmost_Latitude: 37.7667
#   Southernmost_Latitude: 37.7667
#   Easternmost_Longitude: -119.8
#   Westernmost_Longitude: -119.8
#   Elevation_m: 1700
#--------------------
# Data_Collection
#   Collection_Name: CA704
#   First_Year: 1171
#   Last_Year: 1991
#   Time_Unit: CE
#   Core_Length_m:
#   Parameter_Keywords:  ring width
#   Notes: None
#--------------------
# Species
#   Species_Name: Sequoiadendron giganteum (Lindl.) Buchholz
#   Common_Name: giant sequoia
#   Tree_Species_Code: SEGI
#--------------------
# Variables
#
# PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf
#   PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format.
#
# Data variables follow that are preceded by '##' in columns one and two.
# Variables format: shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data)
#
## age_CE	age,,,year Common Era,,tree ring,,,N,
## trsgi	tree ring standardized growth index,,,,,tree ring,composited,standard chronology method,N,
## numsamp	number of samples,,,count,,tree ring,,,N,
#---------------------
# Data:
# Missing_Values: NA
age_CE	trsgi	numsamp
1171	1.044	1
1172	0.919	1
1173	1.044	1
1174	0.977	1
1175	1.163	1
1176	1.032	1
1177	1.116	1
1178	1.127	1
1179	1.116	1
1180	0.975	1
1181	1.081	1
1182	1.153	1
1183	1.081	1
1184	1.022	1
1185	1.195	1
1186	1.215	1
1187	1.054	1
1188	0.782	1
1189	0.73	1
1190	0.891	1
1191	0.991	1
1192	1.055	1
1193	1.017	1
1194	0.92	1
1195	0.994	1
1196	0.906	1
1197	0.998	1
1198	1.036	1
1199	1.138	1
1200	1.063	1
1201	0.983	1
1202	0.994	1
1203	1.046	1
1204	1.108	1
1205	1.046	1
1206	1.113	1
1207	1.11	1
1208	1.108	1
1209	1.171	1
1210	1.103	1
1211	1.077	1
1212	1.051	1
1213	1.256	1
1214	1.192	1
1215	1.114	1
1216	1.23	1
1217	1.085	1
1218	1.178	1
1219	1.132	1
1220	1	1
1221	0.973	1
1222	0.936	1
1223	1.04	1
1224	1.022	1
1225	0.898	1
1226	0.904	1
1227	0.945	1
1228	0.922	1
1229	0.914	1
1230	0.827	1
1231	0.749	1
1232	0.854	1
1233	0.796	1
1234	0.847	1
1235	0.754	1
1236	0.745	1
1237	0.801	1
1238	0.777	1
1239	0.773	1
1240	0.785	1
1241	0.735	1
1242	0.935	1
1243	0.921	1
1244	0.897	1
1245	0.888	1
1246	0.802	1
1247	0.834	1
1248	0.794	1
1249	0.754	1
1250	0.833	1
1251	0.818	1
1252	0.877	1
1253	0.836	1
1254	0.78	1
1255	0.912	1
1256	0.877	1
1257	0.983	1
1258	0.885	1
1259	0.849	1
1260	0.935	1
1261	1.069	1
1262	1.161	1
1263	1.12	1
1264	1.025	1
1265	0.882	1
1266	0.937	1
1267	0.949	1
1268	0.988	1
1269	0.968	1
1270	0.948	1
1271	0.992	1
1272	0.994	1
1273	1.022	1
1274	0.925	1
1275	1.041	1
1276	1.184	1
1277	1.17	1
1278	1.215	1
1279	0.981	1
1280	0.872	1
1281	1.016	1
1282	1.04	1
1283	1.025	1
1284	1.031	1
1285	0.888	1
1286	0.962	1
1287	0.891	1
1288	0.892	1
1289	1.01	1
1290	1.191	1
1291	1.215	1
1292	0.952	1
1293	0.88	1
1294	0.921	1
1295	0.956	1
1296	0.793	1
1297	1.043	1
1298	1.107	1
1299	1.023	1
1300	1.03	1
1301	1.111	1
1302	1.113	1
1303	1.131	1
1304	1.047	1
1305	1.117	1
1306	1.159	1
1307	0.976	1
1308	0.988	1
1309	1.111	1
1310	1.008	1
1311	1.062	1
1312	1.057	1
1313	1.222	1
1314	1.066	1
1315	0.939	1
1316	1.274	1
1317	1.247	1
1318	1.119	1
1319	1.079	1
1320	1.098	1
1321	1.1	1
1322	1.107	1
1323	1.079	1
1324	1.033	1
1325	0.939	1
1326	0.869	1
1327	0.936	1
1328	0.889	1
1329	1.04	1
1330	0.994	1
1331	1.073	1
1332	1.002	1
1333	0.919	1
1334	1.042	1
1335	1.061	1
1336	0.88	1
1337	0.808	1
1338	0.846	1
1339	0.786	1
1340	1.204	1
1341	1.182	1
1342	1.06	1
1343	1.179	1
1344	1.15	1
1345	1.146	1
1346	1.023	1
1347	1.137	1
1348	1.076	1
1349	1.122	1
1350	1.13	1
1351	1.182	1
1352	1.077	1
1353	1.11	1
1354	1.03	1
1355	1.07	1
1356	0.905	2
1357	1.241	2
1358	1.14	2
1359	1.079	2
1360	0.996	2
1361	0.988	2
1362	0.982	2
1363	1.114	2
1364	1.093	2
1365	1.283	2
1366	1.267	2
1367	1.114	2
1368	0.896	2
1369	0.84	2
1370	0.831	2
1371	0.916	2
1372	0.901	2
1373	0.782	2
1374	0.827	2
1375	0.851	2
1376	0.86	2
1377	0.884	2
1378	0.967	2
1379	0.961	2
1380	1.132	2
1381	1.114	2
1382	0.845	2
1383	0.976	2
1384	0.769	2
1385	0.819	2
1386	0.813	2
1387	0.755	2
1388	0.798	2
1389	0.909	2
1390	0.818	2
1391	0.968	2
1392	0.917	2
1393	0.953	2
1394	1.046	2
1395	0.952	2
1396	0.922	2
1397	1.016	2
1398	1.048	2
1399	0.995	2
1400	1.059	2
1401	1.083	2
1402	1.134	2
1403	1.144	2
1404	1.096	2
1405	0.953	2
1406	0.991	2
1407	0.938	2
1408	1.173	2
1409	1.116	2
1410	1.185	2
1411	1.177	2
1412	1.062	2
1413	0.858	2
1414	0.97	2
1415	1.126	2
1416	1.07	2
1417	1.049	2
1418	1.015	2
1419	0.803	2
1420	0.783	2
1421	1.05	2
1422	1.299	2
1423	1.19	2
1424	1.405	2
1425	1.153	2
1426	1.025	2
1427	1.066	2
1428	1.078	2
1429	1.093	2
1430	1.31	2
1431	1.092	2
1432	1.137	2
1433	1.186	2
1434	1.084	2
1435	1.032	2
1436	1.267	2
1437	1.176	2
1438	1.196	2
1439	1.04	2
1440	1.096	2
1441	1.242	2
1442	1.027	2
1443	0.886	2
1444	0.856	2
1445	0.971	2
1446	0.968	2
1447	0.903	2
1448	0.892	2
1449	0.901	2
1450	0.914	2
1451	0.86	2
1452	0.909	2
1453	1.079	2
1454	0.978	2
1455	0.903	2
1456	0.977	2
1457	0.954	2
1458	0.952	2
1459	0.787	2
1460	0.895	2
1461	0.87	2
1462	0.863	2
1463	0.851	2
1464	0.839	2
1465	0.99	2
1466	0.936	2
1467	0.952	2
1468	0.819	2
1469	0.918	2
1470	0.917	2
1471	0.927	2
1472	0.826	2
1473	0.932	2
1474	1.154	2
1475	1.044	2
1476	0.863	2
1477	0.936	2
1478	0.819	2
1479	0.774	2
1480	0.853	2
1481	0.971	2
1482	1	2
1483	0.974	2
1484	1.047	2
1485	0.941	2
1486	0.935	2
1487	0.927	2
1488	0.915	2
1489	0.894	2
1490	0.91	2
1491	1.055	2
1492	0.916	2
1493	1.065	2
1494	0.995	2
1495	1.061	2
1496	1.222	2
1497	0.904	2
1498	0.964	2
1499	0.907	2
1500	0.933	3
1501	1.053	3
1502	1.147	3
1503	1.151	3
1504	1.171	3
1505	1.009	3
1506	1.09	3
1507	1.06	3
1508	1.111	3
1509	1.146	3
1510	1.073	3
1511	1.02	3
1512	1.017	3
1513	1.066	3
1514	1.041	3
1515	0.908	3
1516	0.87	3
1517	1.101	3
1518	0.968	3
1519	1.014	3
1520	0.962	3
1521	0.823	3
1522	0.88	3
1523	0.922	3
1524	0.759	3
1525	0.814	4
1526	0.842	4
1527	0.8	4
1528	0.826	4
1529	0.727	4
1530	0.896	4
1531	0.893	4
1532	0.881	4
1533	0.955	4
1534	1.152	4
1535	0.945	4
1536	1.071	4
1537	0.983	4
1538	1.153	4
1539	1.153	4
1540	0.998	4
1541	0.795	4
1542	1.016	4
1543	1.05	4
1544	0.998	4
1545	0.946	4
1546	1.049	4
1547	1.149	4
1548	0.992	4
1549	1.215	5
1550	1.125	5
1551	1.009	5
1552	0.961	5
1553	1.124	5
1554	0.957	5
1555	0.945	5
1556	0.99	5
1557	1.068	5
1558	1.092	5
1559	0.989	5
1560	1.161	5
1561	1.122	5
1562	1.043	5
1563	1.126	5
1564	1.215	5
1565	1.058	5
1566	1.068	5
1567	1.083	5
1568	1.183	5
1569	0.991	5
1570	0.957	5
1571	0.833	5
1572	1.122	5
1573	1.024	5
1574	1.084	5
1575	0.907	5
1576	0.994	5
1577	1.149	5
1578	1.068	5
1579	0.878	5
1580	0.369	5
1581	0.957	5
1582	1.052	5
1583	0.968	5
1584	0.84	5
1585	1.109	5
1586	1.115	5
1587	1.092	5
1588	1.002	5
1589	1.058	5
1590	0.946	5
1591	1.092	5
1592	1.023	5
1593	1.074	5
1594	0.978	5
1595	0.806	6
1596	0.951	6
1597	1.101	6
1598	0.919	6
1599	1.029	6
1600	0.88	6
1601	1.028	6
1602	0.918	6
1603	0.856	6
1604	0.973	6
1605	0.949	6
1606	1.02	6
1607	0.785	6
1608	0.933	6
1609	0.896	6
1610	1.044	7
1611	1.132	7
1612	0.925	7
1613	0.892	7
1614	1.072	7
1615	1.1	7
1616	1.118	7
1617	1.208	7
1618	1.247	7
1619	1.086	7
1620	1.243	7
1621	1.128	6
1622	1.052	6
1623	0.992	6
1624	1.074	6
1625	1.075	6
1626	0.893	6
1627	0.861	6
1628	0.919	6
1629	0.949	6
1630	1.017	6
1631	1.084	6
1632	0.784	6
1633	0.998	6
1634	0.965	6
1635	1.091	6
1636	1.093	6
1637	0.996	6
1638	1.121	6
1639	0.849	5
1640	0.903	5
1641	0.978	5
1642	0.958	5
1643	0.695	5
1644	0.958	5
1645	0.832	5
1646	0.89	5
1647	0.922	6
1648	0.943	6
1649	0.854	6
1650	0.83	6
1651	0.866	6
1652	0.975	6
1653	0.957	6
1654	0.901	6
1655	0.723	6
1656	1.057	6
1657	0.886	6
1658	1.079	6
1659	1.045	6
1660	1.018	6
1661	1.19	6
1662	1.069	6
1663	1.149	6
1664	1.023	6
1665	1.018	6
1666	1.122	6
1667	0.821	6
1668	1.005	6
1669	0.887	6
1670	0.86	6
1671	0.94	6
1672	1.04	6
1673	0.984	6
1674	1.088	6
1675	0.941	6
1676	0.948	7
1677	1.089	7
1678	1.161	7
1679	1.029	7
1680	0.974	8
1681	1.119	9
1682	0.897	9
1683	1.013	9
1684	0.979	9
1685	1.058	9
1686	0.863	9
1687	1.083	9
1688	1	9
1689	1.009	9
1690	0.995	9
1691	0.867	9
1692	1.124	9
1693	1.138	9
1694	1.137	9
1695	1.118	9
1696	0.999	9
1697	1.023	9
1698	0.899	9
1699	0.988	9
1700	0.938	10
1701	0.903	10
1702	1.075	10
1703	0.761	10
1704	1.028	10
1705	1.088	10
1706	0.897	10
1707	0.969	10
1708	0.97	10
1709	1.031	11
1710	1.007	11
1711	0.771	11
1712	0.896	11
1713	0.986	11
1714	0.933	11
1715	0.871	11
1716	0.943	11
1717	0.959	11
1718	0.9	11
1719	0.847	12
1720	0.961	12
1721	0.881	12
1722	0.909	12
1723	0.89	12
1724	0.927	12
1725	1.092	12
1726	1.129	12
1727	1.048	12
1728	0.926	12
1729	0.863	12
1730	1.058	12
1731	1.088	12
1732	1.065	12
1733	0.901	12
1734	1.045	12
1735	1.126	12
1736	1.175	13
1737	1.028	13
1738	1.056	13
1739	1.031	13
1740	1.042	13
1741	0.954	14
1742	1.017	14
1743	1.027	14
1744	1.034	15
1745	1.011	15
1746	0.934	15
1747	0.926	15
1748	0.82	15
1749	0.905	15
1750	0.882	16
1751	0.815	16
1752	0.939	16
1753	0.941	16
1754	0.969	16
1755	0.953	16
1756	0.812	16
1757	0.869	16
1758	0.793	16
1759	1.016	16
1760	1.039	16
1761	1.177	16
1762	1.048	16
1763	1.032	16
1764	1.014	16
1765	0.914	16
1766	1.073	16
1767	0.97	16
1768	1.092	16
1769	0.911	16
1770	1.047	16
1771	0.866	16
1772	1.041	16
1773	0.939	16
1774	0.983	16
1775	0.793	16
1776	0.852	16
1777	0.569	16
1778	0.778	16
1779	0.857	16
1780	1.068	16
1781	0.995	16
1782	1.016	16
1783	0.986	16
1784	1.155	16
1785	1.175	16
1786	1.215	17
1787	1.104	17
1788	1.199	18
1789	1.324	18
1790	1.351	18
1791	1.166	19
1792	1.213	19
1793	1.124	19
1794	1.013	19
1795	0.871	20
1796	0.832	20
1797	1.088	21
1798	1.147	21
1799	1.274	21
1800	1.234	23
1801	1.24	23
1802	1.186	23
1803	1.128	23
1804	1.112	23
1805	1.009	24
1806	0.983	24
1807	0.947	24
1808	1.072	25
1809	1.122	25
1810	1.103	25
1811	1.092	25
1812	0.92	25
1813	0.802	25
1814	1.026	25
1815	0.839	25
1816	1.016	25
1817	0.901	25
1818	0.877	25
1819	0.849	25
1820	0.983	25
1821	0.872	25
1822	0.973	25
1823	0.948	25
1824	0.888	25
1825	1.008	25
1826	1.057	26
1827	0.861	26
1828	0.969	26
1829	0.8	26
1830	0.742	26
1831	1.095	26
1832	1.437	26
1833	1.234	25
1834	1.217	25
1835	1.229	25
1836	1.135	25
1837	1.104	25
1838	0.997	25
1839	0.971	25
1840	0.923	25
1841	0.689	26
1842	0.946	26
1843	0.843	26
1844	0.878	26
1845	1.006	26
1846	0.827	26
1847	0.929	26
1848	0.816	26
1849	0.837	26
1850	0.905	26
1851	0.832	26
1852	0.842	26
1853	0.991	26
1854	0.916	26
1855	0.899	26
1856	0.833	27
1857	0.872	27
1858	0.79	27
1859	0.753	27
1860	0.807	27
1861	0.848	27
1862	0.768	27
1863	0.859	27
1864	0.813	28
1865	0.715	28
1866	0.81	28
1867	0.929	28
1868	0.947	28
1869	0.917	28
1870	0.874	28
1871	0.882	28
1872	0.971	28
1873	1.023	28
1874	0.842	28
1875	0.982	28
1876	0.909	28
1877	1.093	28
1878	1.028	27
1879	1.115	27
1880	1.049	27
1881	1.289	27
1882	1.108	27
1883	1.135	27
1884	1.23	28
1885	1.439	28
1886	1.101	29
1887	1.029	29
1888	1.059	29
1889	1.094	29
1890	1.172	30
1891	1.236	30
1892	1.012	31
1893	1.306	31
1894	1.402	31
1895	1.229	31
1896	1.129	31
1897	1.128	31
1898	0.904	31
1899	0.779	31
1900	1.105	31
1901	1.135	31
1902	0.862	31
1903	0.987	31
1904	1.052	31
1905	1.048	31
1906	0.987	31
1907	1.131	31
1908	1.138	31
1909	0.74	31
1910	0.813	31
1911	0.835	31
1912	0.837	31
1913	0.789	31
1914	0.778	31
1915	0.728	31
1916	0.908	31
1917	0.919	31
1918	1.004	31
1919	0.934	29
1920	0.772	29
1921	0.983	31
1922	0.873	31
1923	1.019	31
1924	0.696	31
1925	0.947	31
1926	1.014	31
1927	0.955	31
1928	1.043	31
1929	0.918	31
1930	0.882	31
1931	1.023	31
1932	0.661	31
1933	0.757	31
1934	0.982	31
1935	0.822	31
1936	1.069	31
1937	0.903	31
1938	1.241	31
1939	1.14	31
1940	1.035	31
1941	1.174	31
1942	1.291	31
1943	1.302	31
1944	1.085	31
1945	1.14	31
1946	1.366	31
1947	1.273	31
1948	1.199	31
1949	0.888	31
1950	0.902	31
1951	1.096	31
1952	1.077	31
1953	1.129	31
1954	1.186	31
1955	0.942	31
1956	0.976	31
1957	0.882	31
1958	1.092	31
1959	0.838	31
1960	0.808	31
1961	0.934	31
1962	0.773	31
1963	0.852	31
1964	1.088	31
1965	1.012	31
1966	0.878	31
1967	0.886	31
1968	0.885	31
1969	0.918	31
1970	0.839	31
1971	0.846	31
1972	0.945	31
1973	0.869	31
1974	0.997	31
1975	0.891	31
1976	0.978	31
1977	0.684	31
1978	0.937	31
1979	0.812	31
1980	1.078	31
1981	0.97	31
1982	1.24	31
1983	1.108	30
1984	1.122	30
1985	1.058	30
1986	1.146	30
1987	1.013	30
1988	1.011	30
1989	0.83	30
1990	1.038	30
1991	0.781	30