ÃÂ¯ÃÂ»ÃÂ¿# northamerica_usa_tx042 - Big Bend National Park incl. Camp Springs - 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/2960
#
# Description/Documentation lines begin with #
# Data lines have no #
#
# Archive: Tree Rings
#--------------------
# Contribution_Date
#	Date: 2016-01-07
#--------------------
# Title
#	Study_Name: northamerica_usa_tx042 - Big Bend National Park incl. Camp Springs - 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: Big Bend National Park incl. Camp Springs
#	Location:
#	Country: United States
#	Northernmost_Latitude: 29.25
#	Southernmost_Latitude: 29.25
#	Easternmost_Longitude: -103.3
#	Westernmost_Longitude: -103.3
#	Elevation: 2057 m
#--------------------
# Data_Collection
#	Collection_Name: northamerica_usa_tx042B
#	Earliest_Year: 1473
#	Most_Recent_Year: 1992
#	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":"4.5652127417","T2":"16.2363642386","M1":"0.0227905968028","M2":"0.430169706965"}}
#--------------------
# 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
1473	0.857
1474	0.936
1475	0.865
1476	0.835
1477	0.792
1478	0.895
1479	1.122
1480	0.992
1481	1.162
1482	1.169
1483	0.959
1484	0.976
1485	0.824
1486	1.377
1487	0.781
1488	0.849
1489	1.1
1490	0.853
1491	0.854
1492	1.327
1493	0.939
1494	0.913
1495	0.48
1496	0.923
1497	1.101
1498	1.137
1499	1.293
1500	0.914
1501	0.883
1502	0.978
1503	0.716
1504	0.836
1505	1.162
1506	0.962
1507	1.23
1508	1.026
1509	1.361
1510	0.946
1511	1.271
1512	1.08
1513	1.209
1514	0.726
1515	0.631
1516	0.558
1517	0.508
1518	0.871
1519	1.159
1520	0.754
1521	0.882
1522	0.759
1523	0.856
1524	0.435
1525	0.513
1526	1.323
1527	0.629
1528	0.387
1529	0.861
1530	1.328
1531	0.952
1532	0.781
1533	1.155
1534	1.125
1535	0.921
1536	1.864
1537	1.342
1538	0.278
1539	1.09
1540	1.376
1541	0.891
1542	0.336
1543	1.122
1544	0.666
1545	0.721
1546	0.959
1547	0.451
1548	0.783
1549	0.989
1550	0.963
1551	0.748
1552	0.937
1553	1.358
1554	1.534
1555	1.717
1556	1.7
1557	1.04
1558	1.065
1559	0.707
1560	0.866
1561	0.948
1562	0.8
1563	1.315
1564	1.111
1565	1.394
1566	1.269
1567	0.816
1568	1.215
1569	0.974
1570	1.073
1571	1.02
1572	1.002
1573	0.625
1574	0.77
1575	0.871
1576	0.893
1577	0.592
1578	1.01
1579	0.525
1580	1.087
1581	1.149
1582	0.774
1583	0.584
1584	1.001
1585	0.213
1586	1.149
1587	1.053
1588	1.107
1589	0.524
1590	1.076
1591	0.74
1592	0.653
1593	1.042
1594	1.144
1595	0.909
1596	0.938
1597	1.011
1598	0.971
1599	1.195
1600	0.755
1601	0.518
1602	1.203
1603	1.268
1604	0.792
1605	0.542
1606	0.675
1607	0.938
1608	1.233
1609	1.144
1610	1.262
1611	1.106
1612	1.35
1613	0.895
1614	0.861
1615	0.868
1616	1.118
1617	0.915
1618	1.151
1619	0.99
1620	1.259
1621	1.312
1622	1.118
1623	0.751
1624	0.727
1625	1.021
1626	0.707
1627	1.478
1628	1.337
1629	1.927
1630	1.512
1631	1.141
1632	0.468
1633	0.745
1634	1.295
1635	1.063
1636	0.909
1637	0.945
1638	1.055
1639	1.356
1640	1.506
1641	1.301
1642	1.175
1643	1.22
1644	0.811
1645	0.791
1646	1.157
1647	1.029
1648	0.505
1649	0.948
1650	0.984
1651	1.513
1652	1.324
1653	0.777
1654	0.711
1655	1.133
1656	0.961
1657	1.008
1658	1.221
1659	0.945
1660	1.239
1661	1.421
1662	1.088
1663	1.212
1664	0.826
1665	1.294
1666	0.834
1667	0.531
1668	0.335
1669	0.706
1670	0.246
1671	1.095
1672	0.777
1673	0.537
1674	1.059
1675	0.983
1676	0.521
1677	1.274
1678	0.926
1679	1.139
1680	1.368
1681	0.965
1682	1.159
1683	1.247
1684	0.872
1685	0.488
1686	1.257
1687	0.833
1688	0.822
1689	1.34
1690	1.29
1691	0.942
1692	1.37
1693	1.099
1694	0.854
1695	0.881
1696	0.404
1697	0.774
1698	0.787
1699	1.203
1700	1.107
1701	1.568
1702	1.105
1703	0.984
1704	0.575
1705	0.537
1706	0.724
1707	0.677
1708	0.498
1709	0.517
1710	1.155
1711	0.733
1712	1.096
1713	0.79
1714	0.882
1715	0.633
1716	0.476
1717	1.007
1718	1.238
1719	0.813
1720	1.139
1721	1.43
1722	1.361
1723	1.195
1724	1.334
1725	0.896
1726	1.991
1727	1.119
1728	0.816
1729	0.951
1730	0.603
1731	0.576
1732	0.671
1733	0.307
1734	1.085
1735	0.851
1736	1.166
1737	1.304
1738	1.016
1739	0.344
1740	0.911
1741	1.04
1742	0.54
1743	0.86
1744	0.933
1745	1.087
1746	1.789
1747	1.671
1748	0.61
1749	0.965
1750	0.886
1751	1.017
1752	0.439
1753	0.661
1754	0.867
1755	0.591
1756	0.722
1757	0.483
1758	0.956
1759	1.034
1760	0.812
1761	1.284
1762	1.365
1763	0.704
1764	1.12
1765	0.999
1766	1.484
1767	1.288
1768	1.209
1769	1.07
1770	1.209
1771	1.282
1772	0.967
1773	0.741
1774	0.832
1775	1.087
1776	0.802
1777	0.779
1778	0.7
1779	0.797
1780	0.726
1781	0.683
1782	0.552
1783	1.174
1784	1.353
1785	0.564
1786	0.769
1787	0.932
1788	1.041
1789	0.581
1790	0.491
1791	0.946
1792	1.071
1793	1.368
1794	1.043
1795	1.436
1796	0.956
1797	0.927
1798	0.867
1799	1.243
1800	1.175
1801	0.731
1802	1.062
1803	0.857
1804	0.84
1805	0.367
1806	0.708
1807	0.747
1808	0.423
1809	1.052
1810	1.104
1811	0.996
1812	0.728
1813	0.571
1814	0.933
1815	1.316
1816	1.895
1817	1.123
1818	0.79
1819	0.353
1820	0.78
1821	1.191
1822	0.784
1823	0.617
1824	1.275
1825	1.229
1826	1.684
1827	1.651
1828	1.382
1829	1.639
1830	1.166
1831	0.852
1832	0.87
1833	1.3
1834	1.104
1835	1.311
1836	0.988
1837	1.448
1838	1.241
1839	1.229
1840	0.788
1841	0.41
1842	0.493
1843	0.941
1844	1.229
1845	1.526
1846	1.746
1847	0.595
1848	1.298
1849	0.996
1850	1.327
1851	0.666
1852	0.813
1853	1.34
1854	0.451
1855	1.124
1856	1.567
1857	0.975
1858	1.814
1859	0.811
1860	0.822
1861	0.836
1862	0.596
1863	0.209
1864	0.647
1865	0.908
1866	0.894
1867	0.803
1868	1.136
1869	1.37
1870	0.838
1871	0.548
1872	0.445
1873	0.841
1874	0.863
1875	0.691
1876	1.199
1877	1.101
1878	1.167
1879	0.741
1880	0.862
1881	1.314
1882	1.393
1883	1.172
1884	0.723
1885	1.203
1886	0.535
1887	0.666
1888	1.366
1889	1.005
1890	0.565
1891	1.149
1892	0.436
1893	0.671
1894	0.501
1895	0.564
1896	0.991
1897	0.65
1898	0.946
1899	0.687
1900	0.729
1901	1.276
1902	0.46
1903	1.468
1904	0.449
1905	1.279
1906	1.203
1907	1.174
1908	2.111
1909	0.846
1910	0.264
1911	1.163
1912	1.123
1913	0.971
1914	1.17
1915	1.422
1916	0.862
1917	1.215
1918	0.758
1919	1.426
1920	1.521
1921	0.998
1922	0.773
1923	1.237
1924	1.292
1925	0.092
1926	1.494
1927	1.202
1928	1.006
1929	0.915
1930	1.031
1931	1.458
1932	0.996
1933	1.237
1934	0.521
1935	1.23
1936	1.045
1937	0.964
1938	0.991
1939	0.837
1940	1.208
1941	1.448
1942	1.142
1943	1.063
1944	1.234
1945	0.968
1946	0.937
1947	0.966
1948	0.726
1949	1.226
1950	0.564
1951	0.672
1952	0.968
1953	0.54
1954	0.199
1955	0.446
1956	0.195
1957	0.547
1958	0.798
1959	0.663
1960	0.901
1961	0.457
1962	0.757
1963	0.604
1964	0.383
1965	0.664
1966	0.743
1967	0.721
1968	1.108
1969	0.644
1970	0.792
1971	0.301
1972	0.804
1973	1.095
1974	-0.023
1975	1.11
1976	0.788
1977	0.971
1978	0.826
1979	1.415
1980	0.619
1981	1.192
1982	1.286
1983	1.036
1984	0.982
1985	1.284
1986	0.912
1987	1.441
1988	1.096
1989	0.509
1990	0.342
1991	1.112
1992	1.032