# Big Lake, Western Canada Past Six Millennia Diatom Inferred Depth Data
#-----------------------------------------------------------------------            
#                World Data Service for Paleoclimatology, Boulder            
#                                  and            
#                     NOAA Paleoclimatology Program            
#             National Centers for Environmental Information (NCEI)            
#-----------------------------------------------------------------------            
# Template Version 3.0            
# Encoding: UTF-8            
# 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:  https://www.ncdc.noaa.gov/paleo/study/23089
#     Online_Resource_Description:  Landing Page for this study.
#
# Online_Resource:  https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/noaa-templates/data-version-1.0.0/Big.Cumming.2002.txt
#     Online_Resource_Description:  This file.  NOAA WDS Paleo formatted metadata and data for version 1.0.0 of this dataset.
#
# Online_Resource:  https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/data-version-1.0.0/Big.Cumming.2002.lpd
#     Online_Resource_Description:  Linked Paleo Data (LiPD) formatted file containing the same metadata and data as this file, for version 1.0.0 of this dataset.
#
# Description/Documentation lines begin with #
# Data lines have no #
#
# Archive: Paleolimnology
# Parameter_Keywords: earth science>paleoclimate>paleolimnology>lake level
# Dataset_DOI: 
#
#------------------
# Contribution_Date
#     Date: 2017-11-13
#------------------
# File_Last_Modified_Date
#     Modified_Date: 2017-11-13
#------------------
# Title
#     Study_Name: Big Lake, Western Canada Past Six Millennia Diatom Inferred Depth Data
#------------------
# Investigators
#     Investigators: Cumming, Brian F.; Laird, Kathleen R.; Bennett, Joseph R.; Smol, John P.; Salomon, Anne K.
#------------------
# Description_Notes_and_Keywords
#     Description: 
#------------------
# Publication
#     Authors: Cumming, B. F.; Laird, K. R.; Bennett, J. R.; Smol, J. P.; Salomon, A. K.
#     Published_Date_or_Year: 2002
#     Published_Title: Persistent millennial-scale shifts in moisture regimes in western Canada during the past six millennia
#     Journal_Name: Proceedings of the National Academy of Sciences
#     Volume: 99
#     Edition: 
#     Issue: 25
#     Pages: 
#     Report: 
#     DOI: 10.1073/pnas.252603099
#     Online_Resource: doi.org
#     Full_Citation: 
#     Abstract: Inferences of past climatic conditions from a sedimentary record from Big Lake, British Columbia, Canada, over the past 5,500 years show strong millennial-scale patterns, which oscillate between periods of wet and drier climatic conditions. Higher frequency decadal- to centennial-scale fluctuations also occur within the dominant millennial-scale patterns. These changes in climatic conditions are based on estimates of changes in lake depth and salinity inferred from diatom assemblages in a well dated sediment core. After periods of relative stability, abrupt shifts in diatom assemblages and inferred climatic conditions occur approximately every 1,220 years. The correspondence of these shifts to millennial-scale variations in records of glacial expansion/recession and ice-rafting events in the Atlantic suggest that abrupt millennial-scale shifts are important to understanding climatic variability in North America during the mid- to late Holocene. Unfortunately, the spatial patterns and mechanisms behind these large and abrupt swings are poorly understood. Similar abrupt and prolonged changes in climatic conditions today could pose major societal challenges for
many regions.
#------------------
# Funding_Agency
#     Funding_Agency_Name: 
#     Grant: 
#------------------
# Site_Information
#     Site_Name: Big Lake
#     Location: British Columbia
#     Country: 
#     Northernmost_Latitude: 51.668
#     Southernmost_Latitude: 51.668
#     Easternmost_Longitude: -121.45
#     Westernmost_Longitude: -121.45
#     Elevation: 1030
#------------------
# Data_Collection
#     Collection_Name: Big.Cumming.2002
#     Earliest_Year: 5534.0
#     Most_Recent_Year: -41.58
#     Time_Unit: BP
#     Core_Length: 
#     Notes: 
#------------------
# Species
#     Species_Name: 
#     Species_Code: 
#     Common_Name: 
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# 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 ( 10 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data, additional_information)
#
##year age,,,year CE,,,,,N    
##lakeDepth lake depth,lacustrine diatom assemblage,,m, ,climate reconstructions;paleolimnology;lake level, ,,N,this is lake depth  
##age age, , , calendar years before present, , , , ,N
#
#------------------
# Data:        
# Data lines follow (have no #)        
# Data line format - tab-delimited text, variable short name as header)        
# Missing_Values: nan
#
year	lakeDepth	age	
1991.3	4.426	-41.3	
1991.58	4.519	-41.58	
1989.35	4.236	-39.35	
1985.253	4.519	-35.253	
1980.398	4.55	-30.398	
1974.35	6.152	-24.35	
1965.37	10.0	-15.37	
1955.205	11.482	-5.205	
1946.435	10.304	3.565	
1939.3	9.057	10.7	
1932.21	10.641	17.79	
1925.12	8.185	24.88	
1914.19	1.791	35.81	
1901.89	2.911	48.11	
1887.05	4.477	62.95	
1864.51	5.754	85.49	
1841.97	4.786	108.03	
1806.85	5.2	143.15	
1771.73	7.161	178.27	
1736.61	9.333	213.39	
1701.49	4.943	248.51	
1666.37	4.943	283.63	
1631.25	4.169	318.75	
1499.167	5.358	450.833	
1482.472	4.529	467.528	
1465.778	3.54	484.222	
1449.083	3.296	500.917	
1432.389	3.707	517.611	
1415.694	4.13	534.306	
1399.0	4.932	551.0	
1382.306	4.477	567.694	
1365.611	5.224	584.389	
1348.917	8.185	601.083	
1332.222	6.457	617.778	
1315.528	8.954	634.472	
1298.833	5.794	651.167	
1282.139	4.721	667.861	
1265.444	4.732	684.556	
1248.75	4.775	701.25	
1232.056	4.732	717.944	
1215.361	4.645	734.639	
1198.667	5.875	751.333	
1181.972	5.42	768.028	
1165.278	7.907	784.722	
1148.583	5.284	801.417	
1131.889	3.357	818.111	
1115.194	5.534	834.806	
1098.5	4.046	851.5	
1081.806	5.117	868.194	
1065.111	4.436	884.889	
1048.417	5.284	901.583	
1031.722	5.26	918.278	
1015.028	5.176	934.972	
998.333	5.236	951.667	
981.639	4.943	968.361	
964.944	4.592	985.056	
948.25	4.808	1001.75	
931.556	4.909	1018.444	
914.861	5.082	1035.139	
898.167	4.498	1051.833	
881.472	4.498	1068.528	
864.778	4.887	1085.222	
848.083	5.082	1101.917	
831.389	6.324	1118.611	
814.694	5.047	1135.306	
798.0	4.207	1152.0	
787.833	13.397	1162.167	
777.667	10.471	1172.333	
767.5	5.61	1182.5	
757.333	9.506	1192.667	
747.167	8.241	1202.833	
737.0	5.272	1213.0	
726.833	3.177	1223.167	
716.667	5.236	1233.333	
706.5	2.323	1243.5	
696.333	2.917	1253.667	
686.167	5.284	1263.833	
655.667	4.966	1294.333	
645.5	9.333	1304.5	
635.333	10.186	1314.667	
625.167	4.699	1324.833	
615.0	8.453	1335.0	
604.833	9.078	1345.167	
594.667	5.534	1355.333	
584.5	4.688	1365.5	
574.333	4.315	1375.667	
564.167	7.295	1385.833	
554.0	8.872	1396.0	
533.667	9.484	1416.333	
523.5	9.162	1426.5	
503.167	7.98	1446.833	
493.0	9.204	1457.0	
482.833	10.0	1467.167	
472.667	4.477	1477.333	
462.5	3.873	1487.5	
452.333	5.834	1497.667	
442.167	5.998	1507.833	
432.0	4.732	1518.0	
418.717	7.78	1531.283	
405.433	8.69	1544.567	
392.15	7.98	1557.85	
378.867	8.395	1571.133	
365.583	8.395	1584.417	
352.3	7.464	1597.7	
339.017	8.995	1610.983	
325.733	9.572	1624.267	
312.45	8.299	1637.55	
299.167	5.929	1650.833	
285.883	7.096	1664.117	
272.6	4.036	1677.4	
259.317	3.972	1690.683	
246.033	5.715	1703.967	
219.467	5.929	1730.533	
206.183	9.908	1743.817	
192.9	10.257	1757.1	
179.617	7.709	1770.383	
166.333	9.75	1783.667	
153.05	8.59	1796.95	
139.767	9.506	1810.233	
126.483	8.892	1823.517	
113.2	8.531	1836.8	
99.917	7.998	1850.083	
86.633	7.852	1863.367	
73.35	9.162	1876.65	
46.783	9.977	1903.217	
33.5	8.222	1916.5	
20.217	10.889	1929.783	
6.933	6.761	1943.067	
-7.35	9.141	1957.35	
-20.633	7.907	1970.633	
-33.917	8.974	1983.917	
-47.2	8.69	1997.2	
-60.483	5.26	2010.483	
-73.767	7.586	2023.767	
-87.05	8.375	2037.05	
-100.333	7.816	2050.333	
-113.617	9.977	2063.617	
-126.9	13.996	2076.9	
-140.183	10.666	2090.183	
-153.467	8.63	2103.467	
-166.75	3.319	2116.75	
-180.033	3.767	2130.033	
-193.317	5.248	2143.317	
-206.6	6.918	2156.6	
-219.883	8.995	2169.883	
-233.167	7.586	2183.167	
-246.45	5.943	2196.45	
-259.733	8.531	2209.733	
-273.017	10.814	2223.017	
-286.3	5.058	2236.3	
-299.583	9.016	2249.583	
-312.867	8.433	2262.867	
-326.15	9.099	2276.15	
-339.433	8.57	2289.433	
-352.717	5.598	2302.717	
-366.0	5.508	2316.0	
-373.5	4.732	2323.5	
-381.0	5.093	2331.0	
-388.5	4.285	2338.5	
-396.0	4.064	2346.0	
-403.5	4.529	2353.5	
-411.0	4.508	2361.0	
-411.0	4.276	2361.0	
-442.8	4.102	2392.8	
-474.6	4.864	2424.6	
-506.4	5.689	2456.4	
-538.2	9.204	2488.2	
-570.0	10.023	2520.0	
-601.8	7.943	2551.8	
-633.6	10.375	2583.6	
-665.4	11.272	2615.4	
-697.2	4.864	2647.2	
-729.0	4.786	2679.0	
-760.8	4.457	2710.8	
-792.6	5.248	2742.6	
-824.4	10.691	2774.4	
-856.2	8.995	2806.2	
-888.0	3.926	2838.0	
-919.8	7.656	2869.8	
-951.6	4.487	2901.6	
-983.4	6.324	2933.4	
-1047.0	5.675	2997.0	
-1078.8	5.559	3028.8	
-1110.6	8.356	3060.6	
-1142.4	9.078	3092.4	
-1174.2	11.117	3124.2	
-1206.0	4.446	3156.0	
-1237.8	5.2	3187.8	
-1269.6	5.297	3219.6	
-1301.4	5.129	3251.4	
-1333.2	6.653	3283.2	
-1365.0	7.328	3315.0	
-1396.8	8.974	3346.8	
-1492.2	4.355	3442.2	
-1524.0	5.508	3474.0	
-1555.8	9.462	3505.8	
-1587.6	9.183	3537.6	
-1619.4	8.77	3569.4	
-1651.2	8.414	3601.2	
-1696.392	4.786	3646.392	
-1709.785	5.598	3659.785	
-1723.177	9.727	3673.177	
-1736.57	10.186	3686.57	
-1749.962	10.328	3699.962	
-1763.354	9.397	3713.354	
-1776.747	2.704	3726.747	
-1790.139	3.724	3740.139	
-1803.532	3.141	3753.532	
-1816.924	3.565	3766.924	
-1870.494	4.864	3820.494	
-1883.886	12.023	3833.886	
-1897.278	10.814	3847.278	
-1910.671	8.872	3860.671	
-1924.063	10.093	3874.063	
-1937.456	10.94	3887.456	
-1950.848	10.94	3900.848	
-1964.241	9.886	3914.241	
-1977.633	10.28	3927.633	
-1991.025	10.471	3941.025	
-2004.418	10.023	3954.418	
-2017.81	11.169	3967.81	
-2031.203	10.617	3981.203	
-2044.595	10.839	3994.595	
-2057.987	10.257	4007.987	
-2071.38	10.046	4021.38	
-2084.772	10.593	4034.772	
-2098.165	10.093	4048.165	
-2111.557	11.535	4061.557	
-2124.949	10.864	4074.949	
-2138.342	11.508	4088.342	
-2151.734	11.066	4101.734	
-2165.127	8.77	4115.127	
-2178.519	11.722	4128.519	
-2191.911	12.942	4141.911	
-2205.304	9.84	4155.304	
-2218.696	9.75	4168.696	
-2245.481	11.455	4195.481	
-2258.873	12.531	4208.873	
-2272.266	12.445	4222.266	
-2285.658	12.19	4235.658	
-2299.051	11.015	4249.051	
-2312.443	8.831	4262.443	
-2339.228	7.98	4289.228	
-2366.013	8.375	4316.013	
-2379.405	7.852	4329.405	
-2392.797	5.47	4342.797	
-2406.19	7.499	4356.19	
-2419.582	5.07	4369.582	
-2432.975	4.656	4382.975	
-2446.367	6.368	4396.367	
-2473.152	7.079	4423.152	
-2486.544	8.65	4436.544	
-2499.937	4.842	4449.937	
-2513.329	6.998	4463.329	
-2526.722	8.11	4476.722	
-2540.114	7.907	4490.114	
-2553.506	10.423	4503.506	
-2566.899	8.375	4516.899	
-2580.291	8.26	4530.291	
-2593.684	9.226	4543.684	
-2607.076	6.012	4557.076	
-2620.468	11.858	4570.468	
-2633.861	11.117	4583.861	
-2647.253	10.116	4597.253	
-2660.646	11.22	4610.646	
-2674.038	9.817	4624.038	
-2687.43	10.814	4637.43	
-2700.823	9.908	4650.823	
-2714.215	7.499	4664.215	
-2727.608	5.97	4677.608	
-2741.0	9.954	4691.0	
-2752.24	8.59	4702.24	
-2763.48	10.28	4713.48	
-2774.72	10.641	4724.72	
-2785.96	9.863	4735.96	
-2797.2	10.765	4747.2	
-2808.44	11.561	4758.44	
-2819.68	8.551	4769.68	
-2830.92	10.423	4780.92	
-2842.16	10.765	4792.16	
-2853.4	8.913	4803.4	
-2864.64	9.016	4814.64	
-2875.88	12.764	4825.88	
-2887.12	8.892	4837.12	
-2898.36	8.831	4848.36	
-2909.6	10.209	4859.6	
-2920.84	8.375	4870.84	
-2932.08	6.982	4882.08	
-2943.32	8.318	4893.32	
-2988.28	7.328	4938.28	
-2999.52	5.297	4949.52	
-3010.76	7.586	4960.76	
-3022.0	7.015	4972.0	
-3033.24	6.668	4983.24	
-3044.48	6.546	4994.48	
-3066.96	8.81	5016.96	
-3089.44	6.668	5039.44	
-3100.68	7.603	5050.68	
-3111.92	6.427	5061.92	
-3123.16	5.572	5073.16	
-3134.4	6.457	5084.4	
-3145.64	5.689	5095.64	
-3156.88	5.848	5106.88	
-3213.08	8.091	5163.08	
-3224.32	8.166	5174.32	
-3235.56	6.546	5185.56	
-3246.8	6.622	5196.8	
-3258.04	7.551	5208.04	
-3269.28	6.442	5219.28	
-3280.52	7.112	5230.52	
-3291.76	5.794	5241.76	
-3303.0	5.623	5253.0	
-3314.24	5.164	5264.24	
-3325.48	6.561	5275.48	
-3336.72	7.568	5286.72	
-3347.96	6.607	5297.96	
-3359.2	6.095	5309.2	
-3370.44	6.577	5320.44	
-3381.68	6.577	5331.68	
-3392.92	5.984	5342.92	
-3404.16	6.516	5354.16	
-3415.4	6.237	5365.4	
-3426.64	7.278	5376.64	
-3437.88	6.934	5387.88	
-3460.36	6.471	5410.36	
-3471.6	13.274	5421.6	
-3482.84	6.237	5432.84	
-3539.04	4.645	5489.04	
-3550.28	3.802	5500.28	
-3561.52	4.539	5511.52	
-3572.76	4.074	5522.76	
-3584.0	5.047	5534.0