ÃÂ¯ÃÂ»ÃÂ¿# northamerica_usa_co570 - Sheep Pen Canyon - 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/5338
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# Description/Documentation lines begin with #
# Data lines have no #
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# Archive: Tree Rings
#--------------------
# Contribution_Date
#	Date: 2016-01-07
#--------------------
# Title
#	Study_Name: northamerica_usa_co570 - Sheep Pen Canyon - 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: Sheep Pen Canyon
#	Location:
#	Country: United States
#	Northernmost_Latitude: 37.07
#	Southernmost_Latitude: 37.07
#	Easternmost_Longitude: -103.27
#	Westernmost_Longitude: -103.27
#	Elevation: 1580 m
#--------------------
# Data_Collection
#	Collection_Name: northamerica_usa_co570B
#	Earliest_Year: 1460
#	Most_Recent_Year: 1998
#	Time_Unit: y_ad
#	Core_Length:
#	Notes: {"database":{"database1":"LMR","database2":"Breits"}} {"climateInterpretation":{"basis":"", "climateVariable":"M", "climateVariableDetail":"air", "interpDirection":"positive", "seasonality":"[6, 7, 8]"}}{"VSLite_parameters":{"T1":"4.13780698497","T2":"15.3787006348","M1":"0.0232341458749","M2":"0.43999610911"}}
#--------------------
# Species
#	Species_Name: ponderosa pine
#	Species_Code: PIPO
#--------------------
# Chronology:
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#
#--------------------
# 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
1460	0.451
1461	0.412
1462	0.312
1463	0.468
1464	0.598
1465	0.531
1466	0.683
1467	0.701
1468	0.429
1469	0.354
1470	0.39
1471	0.736
1472	0.88
1473	0.355
1474	0.685
1475	0.313
1476	0.332
1477	0.449
1478	0.471
1479	0.346
1480	0.377
1481	0.406
1482	0.953
1483	1.32
1484	1.401
1485	0.977
1486	0.42
1487	1.076
1488	0.792
1489	1.145
1490	1.003
1491	0.672
1492	0.795
1493	1.038
1494	0.624
1495	0.466
1496	0.254
1497	0.663
1498	1.24
1499	1.582
1500	1.144
1501	0.702
1502	0.561
1503	0.244
1504	0.864
1505	0.574
1506	0.256
1507	0.545
1508	0.587
1509	0.418
1510	1.403
1511	1.382
1512	1.582
1513	0.996
1514	1.778
1515	1.534
1516	0.992
1517	1.197
1518	1.35
1519	1.997
1520	1.503
1521	1.896
1522	0.552
1523	1.038
1524	0.274
1525	0.348
1526	1.184
1527	1.016
1528	1.039
1529	0.948
1530	0.974
1531	1.018
1532	0.875
1533	1.057
1534	1.608
1535	1.484
1536	1.378
1537	1.512
1538	0.835
1539	0.877
1540	0.989
1541	0.901
1542	0.919
1543	0.942
1544	0.944
1545	1.271
1546	1.918
1547	1.515
1548	0.567
1549	1.236
1550	1.55
1551	1.191
1552	0.442
1553	1.334
1554	1.408
1555	0.99
1556	1.643
1557	1.456
1558	1.235
1559	1.553
1560	1.225
1561	0.674
1562	1.027
1563	0.596
1564	1.36
1565	1.701
1566	1.439
1567	1.431
1568	1.572
1569	2.014
1570	0.96
1571	0.967
1572	1.085
1573	0.395
1574	1.182
1575	0.903
1576	0.632
1577	1.132
1578	0.92
1579	0.158
1580	0.287
1581	0.288
1582	0.419
1583	0.595
1584	0.665
1585	0.58
1586	0.615
1587	0.553
1588	1.135
1589	1.165
1590	0.471
1591	0.293
1592	0.88
1593	0.647
1594	1.078
1595	1.076
1596	1.77
1597	1.583
1598	0.699
1599	0.98
1600	0.604
1601	0.594
1602	0.732
1603	1.391
1604	1.084
1605	1.001
1606	0.88
1607	1.184
1608	0.765
1609	0.56
1610	0.832
1611	1.114
1612	0.537
1613	0.939
1614	0.813
1615	0.914
1616	0.507
1617	0.744
1618	1.119
1619	2.21
1620	2.219
1621	1.835
1622	1.018
1623	1.057
1624	0.543
1625	0.243
1626	0.453
1627	0.497
1628	0.387
1629	0.61
1630	0.638
1631	0.482
1632	0.259
1633	0.605
1634	0.792
1635	1.255
1636	1.691
1637	1.624
1638	0.894
1639	1.48
1640	1.059
1641	0.652
1642	1.585
1643	1.755
1644	1.127
1645	0.323
1646	1.558
1647	1.099
1648	0.703
1649	1.128
1650	0.506
1651	1.507
1652	0.78
1653	1.133
1654	0.274
1655	1.288
1656	1.254
1657	1.408
1658	1.277
1659	0.744
1660	1.628
1661	1.639
1662	1.49
1663	1.338
1664	1.068
1665	0.655
1666	0.538
1667	0.496
1668	0.229
1669	0.623
1670	0.507
1671	0.66
1672	0.341
1673	0.421
1674	1.323
1675	0.739
1676	0.624
1677	0.748
1678	1.291
1679	0.391
1680	1.165
1681	0.474
1682	0.144
1683	1.411
1684	0.372
1685	0.419
1686	0.473
1687	1.057
1688	0.79
1689	0.78
1690	0.72
1691	1.112
1692	1.705
1693	1.77
1694	0.688
1695	0.941
1696	0.591
1697	0.899
1698	0.44
1699	0.156
1700	0.614
1701	1.106
1702	1.117
1703	1.786
1704	0.667
1705	0.803
1706	1.833
1707	1.288
1708	1.127
1709	1.047
1710	2.173
1711	1.551
1712	1.985
1713	1.788
1714	1.348
1715	0.715
1716	0.509
1717	0.261
1718	0.54
1719	0.601
1720	0.869
1721	1.038
1722	1.309
1723	1.322
1724	1.315
1725	0.529
1726	1.373
1727	1.415
1728	1.61
1729	1.363
1730	0.631
1731	0.863
1732	1.743
1733	0.393
1734	1.085
1735	0.606
1736	0.973
1737	0.766
1738	0.279
1739	0.491
1740	0.652
1741	0.425
1742	0.481
1743	1.161
1744	0.871
1745	0.506
1746	2.076
1747	1.841
1748	1.175
1749	1.524
1750	0.844
1751	1.264
1752	0.518
1753	1.327
1754	1.139
1755	1.868
1756	0.864
1757	1.18
1758	1.034
1759	0.879
1760	1.073
1761	0.975
1762	1.384
1763	0.814
1764	1.515
1765	0.744
1766	1.459
1767	1.353
1768	1.315
1769	0.923
1770	0.311
1771	1.246
1772	0.358
1773	0.655
1774	1.097
1775	1.034
1776	1.085
1777	0.826
1778	0.997
1779	1.39
1780	0.827
1781	0.732
1782	1.394
1783	1.232
1784	0.556
1785	1.11
1786	0.648
1787	0.799
1788	0.669
1789	0.125
1790	0.91
1791	0.753
1792	1.392
1793	1.143
1794	1.083
1795	0.844
1796	0.561
1797	1.575
1798	1.026
1799	1.156
1800	1.424
1801	0.993
1802	0.661
1803	0.668
1804	0.886
1805	0.763
1806	0.729
1807	1.12
1808	0.401
1809	0.199
1810	0.572
1811	0.202
1812	0.541
1813	0.626
1814	1.232
1815	1.145
1816	1.302
1817	1.387
1818	0.376
1819	0.983
1820	0.333
1821	0.711
1822	0.113
1823	1.028
1824	0.547
1825	1.499
1826	1.327
1827	1.53
1828	2.073
1829	2.075
1830	1.041
1831	0.776
1832	1.036
1833	1.447
1834	0.759
1835	1.04
1836	1.127
1837	1.17
1838	1.562
1839	2.311
1840	1.869
1841	1.386
1842	0.332
1843	1.118
1844	1.158
1845	0.553
1846	0.456
1847	0.684
1848	-0.024
1849	1.165
1850	0.513
1851	-0.024
1852	0.162
1853	0.986
1854	1.126
1855	0.738
1856	0.663
1857	0.828
1858	1.322
1859	0.819
1860	0.716
1861	0.352
1862	-0.028
1863	0.218
1864	0.737
1865	0.945
1866	0.844
1867	1.251
1868	1.139
1869	1.427
1870	1.15
1871	1.088
1872	1.572
1873	0.849
1874	0.888
1875	1.074
1876	0.714
1877	0.958
1878	1.787
1879	0.976
1880	0.278
1881	1.093
1882	1.085
1883	0.67
1884	1.51
1885	1.6
1886	1.227
1887	1.488
1888	0.651
1889	1.203
1890	1.63
1891	1.174
1892	1.185
1893	0.437
1894	0.566
1895	0.98
1896	0.564
1897	0.938
1898	0.948
1899	0.296
1900	1.358
1901	1.04
1902	0.764
1903	0.996
1904	0.809
1905	1.539
1906	1.247
1907	1.408
1908	0.318
1909	1.371
1910	0.898
1911	0.562
1912	1.038
1913	1.102
1914	1.35
1915	1.655
1916	0.905
1917	0.967
1918	1.264
1919	1.548
1920	1.753
1921	2.009
1922	1.374
1923	0.951
1924	1.075
1925	0.991
1926	0.957
1927	0.158
1928	0.869
1929	1.13
1930	0.89
1931	1.241
1932	1.108
1933	0.456
1934	0.22
1935	0.324
1936	-0.031
1937	0.302
1938	0.301
1939	0.399
1940	0.426
1941	0.974
1942	1.35
1943	1.219
1944	1.802
1945	1.447
1946	1.329
1947	1.289
1948	1.378
1949	1.534
1950	0.32
1951	0.782
1952	0.647
1953	0.171
1954	0.379
1955	0.809
1956	0.111
1957	0.949
1958	1.352
1959	0.824
1960	0.913
1961	1.043
1962	0.857
1963	0.064
1964	0.235
1965	0.536
1966	0.484
1967	0.619
1968	0.688
1969	1.753
1970	1.461
1971	1.638
1972	1.185
1973	1.095
1974	0.408
1975	0.413
1976	0.802
1977	1.275
1978	0.94
1979	1.286
1980	1.103
1981	0.558
1982	0.801
1983	0.918
1984	0.987
1985	0.89
1986	0.797
1987	1.64
1988	1.457
1989	1.004
1990	1.479
1991	1.63
1992	1.915
1993	1.19
1994	1.094
1995	1.03
1996	0.132
1997	1.051
1998	0.658