ÃÂ¯ÃÂ»ÃÂ¿# northamerica_usa_wa047 - Elliot Creek - Breitenmoser Tree Ring Chronology Data
#-----------------------------------------------------------------------
#		World Data Center for Paleoclimatology, Boulder
#				and
#		NOAA Paleoclimatology Program
#-----------------------------------------------------------------------
# NOTE: Please cite Publication, and Online_Resource and date accessed when using these data.
# If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed.
#
#
# Online_Resource:
#
# Online_Resource: https://www.ncdc.noaa.gov/paleo/study/24611
#
# Original_Source_URL:https://www.ncdc.noaa.gov/paleo/study/3310
#
# Description/Documentation lines begin with #
# Data lines have no #
#
# Archive: Tree Rings
#--------------------
# Contribution_Date
#	Date: 2016-01-07
#--------------------
# Title
#	Study_Name: northamerica_usa_wa047 - Elliot Creek - Breitenmoser Tree Ring Chronology Data
#--------------------
# Investigators
#	Investigators:  Breitenmoser, P.; Bronnimann, S.; Frank, D.
#--------------------
# Description_and_Notes
#	Description: Data from Breitenmoser 2014 Journal of past Climate supplementary, see publication for ARSTAN standardization details
#--------------------
# Publication
#	Authors: Breitenmoser, P.; Bronnimann, S.; Frank, D.
#	Published_Date_or_Year: 2014-03-11
#	Published_Title: Forward modelling of tree-ring width and comparison with a global network of tree-ring chronologies
#	Journal_Name: Climate of the Past
#	Volume: 10 
#	Edition:
#	Issue:
#	Pages: 437-449
#	DOI: 10.5194/cp-10-437-2014
#	Online_Resource: www.clim-past.net/10/437/2014/
#	Full_Citation:
#	Abstract: We investigate relationships between climate and tree-ring data on a global scale using the process-based VaganovÃÂ¢ÃÂÃÂShashkin Lite (VSL) forward model of tree-ring width formation. The VSL model requires as inputs only latitude, monthly mean temperature, and monthly accumulated precipitation. Hence, this simple, process-based model enables ring-width simulation at any location where monthly climate records exist. In this study, we analyse the growth response of simulated tree rings to monthly climate conditions obtained from the CRU TS3.1 data set back to 1901. Our key aims are (a) to assess the VSL model performance by examining the relations between simulated and observed growth at 2287 globally distributed sites, (b) indentify optimal growth parameters found during the model calibration, and (c) to evaluate the potential of the VSL model as an observation operator for data-assimilation-based reconstructions of climate from tree-ring width. The assessment of the growth-onset threshold temperature of approximately 4ÃÂ¢ÃÂÃÂ6 C for most sites and species using a Bayesian estimation approach complements other studies on the lower temperature limits where plant growth may be sustained. Our results suggest that the VSL model skilfully simulates site level treering series in response to climate forcing for a wide range of environmental conditions and species. Spatial aggregation of the tree-ring chronologies to reduce non-climatic noise at the site level yielded notable improvements in the coherence between modelled and actual growth. The resulting distinct and coherent patterns of significant relationships between the aggregated and simulated series further demonstrate the VSL modelÃÂ¢ÃÂÃÂs ability to skilfully capture the climatic signal contained in tree-ring series. Finally, we propose that the VSL model can be used as an observation operator in data assimilation approaches to reconstruct past climate.
#--------------------
#	Authors: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G.J., Noone, D., Perkins, W.A., and E. Steig
#	Published_Date_or_Year: 2018
#	Published_Title: Additions to the last millennium reanalysis multi-proxy database
#	Journal_Name: Data Science Journal
#	Volume:
#	Edition:
#	Issue:
#	Pages:
#	Report_Number:
#	DOI:
#	Online_Resource:
#	Full_Citation: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G., J., Noone, D., Perkins, W.A., and E. Steig, submitted. Additions to the last millennium reanalysis multi-proxy database. Data Science Journal.
#	Abstract: Progress in paleoclimatology increasingly occurs via data syntheses. We describe additions to a collection prepared for use in paleoclimate state estimation, specifically the Last Millennium Reanalysis (LMR).  The 2290 additional series include 2152 tree ring chronologies and 138 other series.  They supplement the collection used previously and together form a database titled LMRdb 1.0.0. The additional data draws from lake core, ice core, coral, speleothem, and tree ring archives, using published data primarily from the NOAA Paleoclimatology archive and a set of tree ring width chronologies standardized from raw International Tree Ring Data Bank ring width series. In contrast to many previous paleo compilations, the data were not selected (screened) on the basis of their environmental correlation, multi-century length, or other attributes. The inclusion of proxies sensitive to moisture and other environmental variables expands their use in data assimilation.  A preliminary calibration using linear regression with mean annual temperature reveals characteristics of the proxy series and their relationship to temperature, as well as the noise and error characteristics of the records. The additional records are structured as individual files in the NOAA Paleoclimatology format and archived at NOAA Paleoclimatology (Anderson et al. 2018) and will continue to be improved and expanded as part of the LMR Project.  The additions represent a four-fold increase in the number of records available for assimilation, provide expanded geographic coverage, and add additional proxy variables.  Applications include data assimilation, proxy system model development, and paleoclimate reconstruction using climate field reconstruction and other methods.
#------------------
# Funding_Agency
#	Funding_Agency_Name: Swiss National Science Foundation
#	Grant:
#--------------------
#	Funding_Agency_Name: National Science Foundation
#	Grant:AGS-1304263
#	Funding_Agency_Name: National Oceanic and Atmospheric Administration
#	Grant:NA14OAR4310176
#------------------
# Site_Information
#	Site_Name: Elliot Creek
#	Location:
#	Country: United States
#	Northernmost_Latitude: 48.05
#	Southernmost_Latitude: 48.05
#	Easternmost_Longitude: -121.4
#	Westernmost_Longitude: -121.4
#	Elevation: 805 m
#--------------------
# Data_Collection
#	Collection_Name: northamerica_usa_wa047B
#	Earliest_Year: 1250
#	Most_Recent_Year: 1980
#	Time_Unit: y_ad
#	Core_Length:
#	Notes: {"database":{"database1":"LMR","database2":"Breits"}} {"climateInterpretation":{"basis":"", "climateVariable":"T", "climateVariableDetail":"air", "interpDirection":"positive", "seasonality":"[6, 7, 8]"}}{"VSLite_parameters":{"T1":"5.1133840382","T2":"11.6702986811","M1":"0.023001618603","M2":"0.602295443453"}}
#--------------------
# Species
#	Species_Name: Douglas fir
#	Species_Code: PSME
#--------------------
# Chronology:
#
#
#
#--------------------
# Variables
#
# Data variables follow that are preceded by ## in columns one and two.
# Data line variables format:  Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data)
#
##age	age, , ,years AD, , , , ,N
##trsgi	tree ring standardized growth index, tree ring, ,percent relative to mean growth, , Tree Rings, , ,N
#
#--------------------
# Data:
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing Values: nan
#
age	trsgi
1250	0.795
1251	0.9
1252	0.741
1253	0.671
1254	0.74
1255	0.757
1256	0.947
1257	0.998
1258	1.101
1259	1.083
1260	0.891
1261	0.908
1262	1.045
1263	0.992
1264	0.974
1265	1.196
1266	0.989
1267	0.902
1268	0.901
1269	0.747
1270	0.542
1271	0.797
1272	0.898
1273	0.897
1274	0.76
1275	0.895
1276	1.063
1277	1.011
1278	0.791
1279	1.026
1280	0.857
1281	0.873
1282	1.056
1283	1.089
1284	1.121
1285	1.103
1286	0.919
1287	0.901
1288	0.851
1289	0.85
1290	1.014
1291	0.914
1292	0.666
1293	0.781
1294	0.796
1295	0.713
1296	0.811
1297	0.925
1298	0.712
1299	0.874
1300	0.711
1301	0.71
1302	0.807
1303	0.709
1304	0.578
1305	0.578
1306	0.513
1307	0.448
1308	0.48
1309	0.641
1310	0.56
1311	0.64
1312	0.639
1313	0.591
1314	0.638
1315	0.574
1316	0.574
1317	0.668
1318	0.754
1319	0.737
1320	0.712
1321	0.8
1322	0.869
1323	0.896
1324	0.826
1325	0.804
1326	0.863
1327	0.904
1328	0.903
1329	0.827
1330	0.726
1331	0.772
1332	0.646
1333	0.728
1334	0.652
1335	0.612
1336	0.66
1337	0.497
1338	0.45
1339	0.401
1340	0.465
1341	0.418
1342	0.394
1343	0.336
1344	0.381
1345	0.284
1346	0.467
1347	0.403
1348	0.407
1349	0.4
1350	0.384
1351	0.377
1352	0.405
1353	0.377
1354	0.418
1355	0.498
1356	0.418
1357	0.489
1358	0.485
1359	0.485
1360	0.43
1361	0.455
1362	0.471
1363	0.468
1364	0.515
1365	0.534
1366	0.445
1367	0.371
1368	0.489
1369	0.479
1370	0.526
1371	0.554
1372	0.564
1373	0.563
1374	0.741
1375	0.757
1376	0.597
1377	0.632
1378	0.675
1379	0.564
1380	0.6
1381	0.575
1382	0.57
1383	0.543
1384	0.493
1385	0.613
1386	0.638
1387	0.571
1388	0.493
1389	0.464
1390	0.435
1391	0.501
1392	0.444
1393	0.396
1394	0.516
1395	0.535
1396	0.486
1397	0.555
1398	0.401
1399	0.272
1400	0.328
1401	0.22
1402	0.344
1403	0.329
1404	0.185
1405	0.301
1406	0.301
1407	0.351
1408	0.401
1409	0.342
1410	0.33
1411	0.33
1412	0.222
1413	0.359
1414	0.484
1415	0.431
1416	0.403
1417	0.345
1418	0.562
1419	0.417
1420	0.264
1421	0.432
1422	0.403
1423	0.305
1424	0.287
1425	0.245
1426	0.326
1427	0.287
1428	0.404
1429	0.377
1430	0.368
1431	0.307
1432	0.379
1433	0.523
1434	0.503
1435	0.411
1436	0.483
1437	0.844
1438	0.917
1439	0.825
1440	0.898
1441	0.62
1442	0.558
1443	0.787
1444	0.829
1445	0.736
1446	0.624
1447	0.827
1448	0.813
1449	0.682
1450	0.566
1451	0.464
1452	0.508
1453	0.585
1454	0.512
1455	0.479
1456	0.581
1457	0.768
1458	0.727
1459	0.771
1460	0.642
1461	0.742
1462	0.696
1463	0.509
1464	0.477
1465	0.539
1466	0.571
1467	0.495
1468	0.589
1469	0.588
1470	0.493
1471	0.435
1472	0.473
1473	0.642
1474	0.533
1475	0.522
1476	0.584
1477	0.466
1478	0.564
1479	0.643
1480	0.628
1481	1.127
1482	0.86
1483	0.802
1484	0.828
1485	0.852
1486	0.793
1487	0.666
1488	0.559
1489	0.605
1490	0.513
1491	0.594
1492	0.726
1493	0.638
1494	0.659
1495	0.728
1496	0.745
1497	0.824
1498	0.761
1499	0.875
1500	0.989
1501	0.981
1502	0.976
1503	0.966
1504	1.089
1505	1.031
1506	0.971
1507	0.756
1508	1.052
1509	1.03
1510	0.843
1511	0.859
1512	0.779
1513	0.737
1514	0.993
1515	0.905
1516	0.861
1517	0.907
1518	0.825
1519	1.013
1520	1.029
1521	1.294
1522	1.252
1523	1.166
1524	1.158
1525	1.362
1526	1.155
1527	1.269
1528	1.48
1529	1.161
1530	1.353
1531	0.972
1532	0.874
1533	1.069
1534	0.842
1535	0.788
1536	1.021
1537	1.022
1538	0.825
1539	1.236
1540	1.615
1541	1.176
1542	1.333
1543	1.289
1544	0.807
1545	1.221
1546	0.797
1547	0.797
1548	0.844
1549	0.639
1550	0.748
1551	1.038
1552	0.795
1553	0.776
1554	0.773
1555	1.234
1556	1.151
1557	0.97
1558	1.275
1559	0.95
1560	1.276
1561	0.856
1562	0.976
1563	1.028
1564	0.869
1565	0.691
1566	1.777
1567	1.682
1568	1.424
1569	1.244
1570	1.38
1571	1.514
1572	1.762
1573	1.709
1574	1.751
1575	1.417
1576	0.932
1577	0.94
1578	1.101
1579	1.245
1580	1.142
1581	1.062
1582	0.996
1583	1.129
1584	1.126
1585	1.135
1586	0.988
1587	0.82
1588	0.764
1589	1.156
1590	1.425
1591	1.605
1592	1.424
1593	1.169
1594	0.941
1595	0.893
1596	1.101
1597	1.398
1598	1.519
1599	1.351
1600	1.069
1601	1.152
1602	1.183
1603	0.875
1604	0.937
1605	0.897
1606	0.924
1607	1.304
1608	1.331
1609	1.234
1610	1.008
1611	1.313
1612	1.332
1613	1.246
1614	1.281
1615	1.28
1616	1.378
1617	0.937
1618	1.09
1619	0.995
1620	0.998
1621	1.234
1622	1.314
1623	0.935
1624	1.239
1625	1.073
1626	1.097
1627	1.022
1628	1.149
1629	1.08
1630	1.16
1631	1.035
1632	1.207
1633	1.092
1634	0.85
1635	0.724
1636	0.891
1637	0.959
1638	0.965
1639	0.945
1640	1.132
1641	0.961
1642	0.966
1643	1.115
1644	1.208
1645	1.362
1646	1.474
1647	1.239
1648	1.165
1649	0.951
1650	0.931
1651	1.267
1652	1.223
1653	0.843
1654	1.248
1655	1.304
1656	1.282
1657	1.272
1658	1.23
1659	1.34
1660	1.214
1661	1.019
1662	1.062
1663	0.974
1664	1.036
1665	0.804
1666	1.132
1667	1.121
1668	1.186
1669	1.327
1670	1.126
1671	0.972
1672	1.092
1673	1.083
1674	0.975
1675	1.272
1676	1.194
1677	0.888
1678	1.043
1679	1.026
1680	0.822
1681	1.013
1682	1.307
1683	1.044
1684	0.895
1685	1.095
1686	1.027
1687	1.042
1688	0.863
1689	1.075
1690	1.176
1691	1.152
1692	1.192
1693	1.118
1694	1.284
1695	1.421
1696	1.165
1697	1.282
1698	1.029
1699	1.058
1700	1.044
1701	0.793
1702	0.936
1703	1.001
1704	0.962
1705	0.904
1706	0.903
1707	0.903
1708	0.783
1709	1.036
1710	1.065
1711	0.897
1712	1.06
1713	1.06
1714	1.248
1715	1.179
1716	1.038
1717	0.892
1718	0.935
1719	1.014
1720	0.98
1721	1.229
1722	1.356
1723	1.24
1724	0.936
1725	1.013
1726	1.01
1727	0.877
1728	0.797
1729	1.108
1730	0.919
1731	1.05
1732	1.137
1733	1.226
1734	0.933
1735	1.102
1736	0.784
1737	0.981
1738	1.122
1739	0.87
1740	0.849
1741	0.783
1742	0.833
1743	0.747
1744	0.579
1745	0.709
1746	0.7
1747	0.923
1748	0.788
1749	0.898
1750	0.918
1751	0.726
1752	0.86
1753	0.819
1754	0.582
1755	0.799
1756	0.695
1757	0.76
1758	0.623
1759	0.766
1760	0.785
1761	0.917
1762	1.072
1763	0.984
1764	0.787
1765	0.875
1766	0.944
1767	0.908
1768	0.831
1769	0.86
1770	1.081
1771	1.153
1772	1.163
1773	1.501
1774	1.183
1775	0.936
1776	0.654
1777	1.161
1778	1.036
1779	0.889
1780	1.028
1781	0.958
1782	0.872
1783	0.945
1784	0.983
1785	1.144
1786	1.139
1787	0.708
1788	1.057
1789	1.221
1790	1.017
1791	1.015
1792	1.108
1793	1.344
1794	1.138
1795	1.026
1796	1.022
1797	0.96
1798	0.964
1799	0.661
1800	0.811
1801	1.073
1802	1.064
1803	1.144
1804	1.312
1805	1.319
1806	1.183
1807	1.094
1808	1.023
1809	0.846
1810	0.925
1811	0.881
1812	0.93
1813	0.872
1814	1.075
1815	1.068
1816	1.049
1817	0.956
1818	1.031
1819	1.269
1820	1.092
1821	0.686
1822	1.172
1823	0.838
1824	0.95
1825	1.181
1826	0.946
1827	0.811
1828	0.66
1829	1.129
1830	0.922
1831	0.7
1832	0.857
1833	1.066
1834	0.892
1835	0.82
1836	0.663
1837	0.726
1838	0.896
1839	1.141
1840	0.857
1841	0.761
1842	0.684
1843	0.711
1844	0.888
1845	0.974
1846	1.079
1847	0.714
1848	0.764
1849	0.579
1850	0.59
1851	0.782
1852	0.714
1853	0.649
1854	0.699
1855	0.881
1856	0.865
1857	0.873
1858	0.987
1859	0.912
1860	1.125
1861	1.22
1862	0.88
1863	1.24
1864	0.928
1865	0.955
1866	0.96
1867	1.001
1868	1.15
1869	0.783
1870	0.804
1871	0.685
1872	0.861
1873	0.854
1874	0.823
1875	1.121
1876	0.846
1877	1.037
1878	1.013
1879	1.019
1880	0.775
1881	0.894
1882	1.073
1883	0.761
1884	0.792
1885	0.751
1886	0.713
1887	0.713
1888	0.826
1889	0.78
1890	0.907
1891	1.108
1892	1.082
1893	1.056
1894	1.082
1895	0.796
1896	0.821
1897	0.679
1898	1.013
1899	0.902
1900	1.241
1901	1.121
1902	0.955
1903	0.95
1904	1.032
1905	0.689
1906	0.702
1907	0.775
1908	0.796
1909	0.736
1910	0.781
1911	0.883
1912	0.876
1913	1.091
1914	1.146
1915	0.896
1916	0.942
1917	1.009
1918	0.76
1919	0.965
1920	1.123
1921	1.016
1922	0.778
1923	0.618
1924	0.802
1925	0.841
1926	0.706
1927	0.802
1928	0.942
1929	0.917
1930	0.911
1931	1.123
1932	0.942
1933	1.16
1934	1.057
1935	1.569
1936	1.167
1937	1.115
1938	1.11
1939	0.692
1940	0.962
1941	0.924
1942	1.275
1943	1.191
1944	1.289
1945	1.224
1946	1.123
1947	1.094
1948	1.545
1949	1.286
1950	1.541
1951	1.2
1952	1.106
1953	1.309
1954	1.334
1955	1.465
1956	1.091
1957	0.996
1958	1.143
1959	0.641
1960	0.799
1961	0.908
1962	0.838
1963	1.128
1964	1.285
1965	1.106
1966	0.873
1967	0.929
1968	0.903
1969	1
1970	1.103
1971	0.797
1972	0.761
1973	1.054
1974	0.893
1975	0.882
1976	1.046
1977	1.172
1978	1.362
1979	1.356
1980	0.412