# Col du Dome, France Ice Core Thallium Data from 1890-2001 CE
#-----------------------------------------------------------------------
#               World Data Service for Paleoclimatology, Boulder
#                                   and
#                      NOAA Paleoclimatology Program
#-----------------------------------------------------------------------
# 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 '#' followed by a space
# Data lines have no '#'
#
# NOAA_Landing_Page: https://www.ncdc.noaa.gov/access/paleo-search/study/34210
#   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-icecore-34210.json
#   Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata.
#
# Data_Type: Ice Core
#
# Dataset_DOI:
#
# Science_Keywords: 
#---------------------------------------
# Resource_Links
#
# Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/icecore/europe/legrand2022/legrand2022-tl-ce-dust.txt
#   Data_Download_Description: NOAA Template File; Col du Dome Tl Ce Dust Legrand2022 Data
#
#---------------------------------------
# Contribution_Date
#   Date: 2022-03-18
#---------------------------------------
# File_Last_Modified_Date
#   Date: 2022-03-18
#---------------------------------------
# Title
#   Study_Name: Col du Dome, France Ice Core Thallium Data from 1890-2001 CE
#---------------------------------------
# Investigators
#   Investigators: Legrand, M.; McConnell, J.R.; Preunkert, S.; Bergametti, G.; Chellman, N.J.; Desboeufs, K.; Plach, A.; Stohl, A.; Eckhardt, S.
#---------------------------------------
# Description_Notes_and_Keywords
#   Description: 
#---------------------------------------
# Publication
#   Authors: Legrand, M., McConnell, J.R., Preunkert, S., Bergametti, G., Chellman, N.J., Desboeufs, K., Plach, A., Stohl, A., and Eckhardt, S.
#   Published_Date_or_Year: 2022
#   Published_Title: Thallium Pollution in Europe Recorded in Alpine Ice: Contributions from Coal Burning and Cement Production
#   Journal_Name: Geophysical Research Letters
#   Volume: 
#   Edition: 
#   Issue: 
#   Pages: 
#   Report_Number: 
#   DOI: 
#   Online_Resource: 
#   Full_Citation: 
#   Abstract: Emission inventories indicate that thallium, a highly toxic metal, is emitted during coal burning and cement production. These estimates have been establishedonly for the 1980s and 1990s but up to now they have not been compared to long-term observations. Here we used alpine ice cores to document thallium pollutionover Europe since ~1850. Ice-core thallium concentrations increased from 1890 to 1910, and decreased after 1965 to concentrations that were half 1890 levels.Comparison of ice-core trends, estimated past emissions, and state-of-the-art atmospheric aerosol transport modelling suggests that coal burning was responsiblefor thallium pollution in Europe, particularly from 1920 to 1965 because of high coal consumption at that time. The subsequent decline resulted from decreasedcoal consumption and reduced emissions following technological improvements. The ice-core data suggest that the rapid growth of cement production that tookplace in Europe after 1950 had a limited impact on thallium pollution.
#---------------------------------------
# Funding_Agency
#   Funding_Agency_Name: 
#   Grant: 
#---------------------------------------
# Site_Information
#   Site_Name: Col du Dome
#   Location: France
#   Northernmost_Latitude: 45.84
#   Southernmost_Latitude: 45.84
#   Easternmost_Longitude: 6.85
#   Westernmost_Longitude: 6.85
#   Elevation_m: 
#---------------------------------------
# Data_Collection
#   Collection_Name: Col du Dome Tl Ce Dust Legrand2022
#   First_Year: 
#   Last_Year: 
#   Time_Unit: 
#   Core_Length_m: 
#   Parameter_Keywords: chemistry
#   Notes: 
#---------------------------------------
# Chronology_Information 
# Chronology: 
#---------------------------------------
# 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 list, one per line, shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data)
#
## Tl	thallium,,,picogram per gram,,ice cores,,,N,in ice containing Saharan dust
## Ce	cerium,,,picogram per gram,,ice cores,,,N,in ice containing Saharan dust
#------------------------
# Data:
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing_Values: na
Tl	Ce	
3.99	283.99	
5.82	379.27	
7.77	473.77	
10.05	642.26	
9.16	560.02	
7.54	445.34	
5.44	310.36	
6.43	236.6	
7.05	288.67	
2.49	191.88	
2.94	240.73	
3.62	248.75	
3.96	269.81	
3.7	229.63	
2.93	169.65	
2.89	197.03	
3.4	310.18	
4.21	464.16	
5.32	604.28	
6.67	732.19	
7.66	797.82	
8.28	828.93	
7.34	649.39	
4.84	433.08	
2.98	286.65	
3.25	250.71	
2.99	243.77	
3.67	322.86	
4.84	493.89	
6.69	661.53	
7.94	746.58	
8.55	843.45	
8.76	788.59	
8.44	620.64	
8.49	540.48	
7.94	429.2	
6.51	312.16	
1.48	96.86	
2.35	146.09	
3.24	219.18	
3.93	294.44	
4.47	361.48	
4.79	358.99	
5.07	380.1	
5.17	421.22	
5.05	438.06	
4.4	390	
3.26	228.31	
2.44	122.35	
2.29	126.01	
2.32	142.21	
2.06	144.15	
1.64	115.49	
1.26	93.55	
1.54	140.86	
1.83	198.55	
2.29	305.07	
2.67	411.34	
2.64	419.69	
2.21	329.91	
1.71	204.25	
1.5	80.82	
1.69	92.98	
1.68	95.23	
1.49	86.29	
1.62	125.71	
1.62	98.72	
1.36	82.11	
2.54	125.1	
3.29	172.97	
3.61	223.72	
3.55	251.21	
3.24	277.57	
3.06	276.04	
3.1	217.53	
3.02	176.49	
3.16	200.94	
4.11	247.43	
4.93	300.83	
5.03	312.19	
4.74	284.28	
4.26	312.68	
3.59	276.59	
3.22	181.66	
4.37	34.14	
3.93	36.51	
3.21	33.28	
6.33	275.12	
7.15	409.43	
7.25	469.02	
7.09	467.02	
6.38	480.25	
5.68	421.54	
4.8	329.74	
3.24	238.46	
1.76	64.99	
2.11	93.43	
2.15	95.69	
2.03	89.74	
0.56	48.66	
0.69	53.69	
0.76	52.08	
3.04	60.84	
2.39	75	
1.94	90.21	
3.44	218.31	
2.65	236.19	
3.04	218	
5.27	179.17	
4.98	157.41	
2.65	78.44	
2.68	99.6	
2.5	105.95	
2.09	92.58	
1.56	71.56	
1.2	43.35	
1.4	55.1	
1.52	58.21	
1.74	70.45	
1.81	83.58	
1.82	58.85	
1.79	36.98	
0.4	19.46	
0.39	18.86	
0.44	17.88	
0.45	16.84	
0.51	17.09	
0.63	20.38	
0.68	30.93	
0.86	43.99	
1.01	58.36	
1.08	66.7	
1.28	61.15	
2.27	121.2	
3.11	151.94	
4.05	193.41	
5.1	225.66	
5.12	216.85	
3.91	196.55	
6.52	290.74	
5.41	310.24	
4.72	328.08	
4.34	289.13	
1.23	42.6	
2.87	62.09	
2.65	74.06	
2.13	81.44	
1.01	5	
0.76	4.96	
0.53	4.56	
4.13	204.8	
5.93	287.94	
7.11	377.93	
7.07	408.18	
5.56	295.29	
2.52	40.09	
2.07	23.14	
1.71	23.2	
1.45	23.25	
1.19	23.16	
1	23.66	
3.12	20.4	
2.02	16.32	
1.08	12.86	
0.91	75.72	
1.24	106.95	
1.6	139.77	
1.64	165.94	
1.62	157.18	
3.68	117.55	
3.96	93.12	
3.64	91.26	
2.66	109.69	
4.7	234.33	
4.11	204.45	
3.26	125.81	
2.13	82.54	
5.19	49.43	
3.03	29.71	
4.46	221.12	
4.22	263.49	
3.82	257.28	
3.09	298.4	
3.95	155.89	
2.87	169.18	
2.42	146.76	
3.43	175.04	
4.17	206.14	
3.98	176.91	
3	130.31	
2	82.96	
1.45	69.8	
1.23	67.85	
1.22	49.91	
1.19	42.54	
2.09	15.93	
1.47	79.76	
1.13	117.21	
1	133.37	
6.5	59.97	
4.89	67.57	
3.2	99.2	
2.31	110.67	
2.71	110.37	
3.3	137.59	
3.36	125.65	
3.19	92	
1.69	87.92	
1.98	98.6	
2.48	114.25	
3.3	123.7	
3.87	103.11	
4.23	51.91	
2.61	41.11	
2.71	47.1	
2.59	55.93	
3.14	73.01	
3.61	97.6	
3.64	121.49	
3.14	126.69	
2.27	97.04	
0.91	73.57	
1.01	127.41	
1	144.56	
2.68	104.74	
3.82	179.11	
4.89	207.13	
5	160.96	
3.99	121.87	
2.45	67.97	
4.37	34	
2.28	25.85	
2.99	55.54	
3.56	63.09	
2.82	56.58	
1.69	47.74	
6.32	236.11	
6.21	263.24	
5.2	234.5	
7.12	150.41	
7.01	182.69	
4.47	141.87	
2.31	105.09	
1.41	108.45	
1.53	137.46	
1.69	137.98	
1.58	110.62	
1.1	51.31	
8.87	115.31	
10.26	206.53	
10.72	215.45	
10.81	288.56	
8.34	376.94	
9.51	432.84	
11.43	601.9	
12.94	875.06	
13.28	1063.04	
12.61	941.42	
10.18	596.96	
6.85	309.77	
5.15	156.09	
4.4	99.12	
3.26	69.32	
1.9	45.43	
6.81	118.33	
10.68	171.52	
10.67	114.3	
11.59	101.77	
13.5	110.62	
14	123.2	
7.62	100	
4.2	92.33	
1.58	29.96	
5.15	160.95	
8.16	240.57	
12.58	338.11	
16.85	508.93	
19.72	522.43	
19.07	329.17	
16.12	269.8	
13.12	262.98	
11.21	280.6	
9.46	252.49	
7.49	165.54	
5.36	86	
1.54	95.73	
1.42	107.82	
1.58	98.74	
1.96	122.32	
1.87	155.21	
1.4	101.59	
0.81	34.92	
0.86	40.64	
10.61	127.07	
5.41	87.61	
8.65	82.03	
6.8	102.05	
5.57	126.06	
4.89	119.29	
4.09	117.56	
3.19	104.05	
2.68	87.82	
2.96	131.36	
3.75	193.49	
4.63	244.04	
5.15	291.61	
5.02	349.88	
4.6	365.68	
4.23	361.42	
4.29	349.67	
4.26	342.1	
4.28	276.35	
4.13	154.07	
6.98	226.06	
10	257.57	
10.83	234.67	
1.48	161.52	
1.76	130.7	
2.1	150.88	
2.38	173.57	
2.62	175.89	
2.61	160.35	
2.49	129.62	
1.51	74.87	
2.87	131.45	
4.49	189.41	
5.56	243.93	
5.49	250.41	
5.12	176.29	
5.48	58.81	
9.04	133.86	
6.73	121.11	
7.03	66.17	
7.27	72.59	
6.95	76.35	
5.79	102.02	
4.54	107.23	
3.61	80.55	
2.79	65.63	
2.22	53.8	
1.95	42.24	
1.83	33.9	
1.99	38.57	
2.47	53.24	
3.27	80.32	
3.74	117.84	
3.92	149.74	
3.79	195.27	
3.71	185.83	
3.6	129.19	
3.58	113.06	
3.78	64.37	
3.96	36.76	
3.93	29.69	
7.78	98.32	
5.16	101.95	
3.01	81.86	
1.76	58.12	
1.47	58.57	
1.82	94.15	
2.12	144.04	
2.38	163.91	
2.36	148.56	
2.43	85.8	
9.1	55.83	
7.12	60.59	
4.2	51.33	
6.71	46.64	
1.98	8.5	
2.5	10.06	
2.35	9.68	
1.44	8.79	
3.44	39.46	
5.49	60.71	
8.13	91.16	
9.94	106.26	
9.41	82.76	
1.47	35.64	
4.39	62.29	
4.28	60.29	
11.54	57.29	
10.05	61.14	
6.89	56.68	
11.45	91.85	
8.12	101.13	
6.11	16.91	
0.7	6.55	
4.54	22.55	
6.44	33.74	
17.53	75.1	
16.32	87.33	
12.49	76.65	
3.45	78.85	
3.86	74.92	
4.05	81.79	
4.14	76.45	
7.76	160.1	
11.68	210.47	
14.15	311.31	
13.98	403.13	
2.7	60.27	
3.32	113.01	
3.85	138.75	
4.51	181.38	
6.55	246.47	
9.52	241.68	
10.68	272.76	
9.59	281.77	
9.8	96.52	
10.03	173.97	
7.4	261.76	
4.95	338.31	
2.96	233.22	
1.99	139.85	
2.54	117.47	
3.91	122.21	
5.55	117.98	
7.12	97.17	
10.44	62.3	
9.84	46.57	
14.32	100.28	
10.61	120.54	
9.49	62.69	
10.53	69.42	
9.18	60.89	
6.35	40.65	
3.46	69.56	
4.56	95.82	
6.49	131.05	
7.04	137.89	
6.9	106.72	
5.56	73.15	
4.26	121.92	
4.14	94.71	
3.97	66.36	
1.02	19.73	
1.19	29.85	
0.85	33.38	
0.49	28.03	
3.9	24.76	
3.51	31.52	
2.94	33.29	
9.13	19.01	
10.02	33.77	
10.88	37	
9.63	36.87	
8.48	12	
10.39	14.32	
10.44	14.41	
9.56	15.53	
8.23	15.72	
8.58	20.77	
9.99	27.03	
9.45	32.63	
7.81	35.9	
5.23	33.13	
4.34	28.77	
5.34	31.67	
7.59	37.86	
7.74	42.06	
5.76	41.59	
3.61	39.61	
3.04	39.01	
3.11	37.82	
2.26	34.43	
1.26	3.42	
2.44	4.77	
3.38	6.76	
3.67	7.16	
2.77	6.96	
1.7	6.69	
7.35	13.21	
9.3	15.49	
7.99	13.32	
7.41	10.33	
7.19	10.12	
5.71	9.22	
6.63	37.03	
6.09	24.84	
7.6	84	
7.94	113.41	
6.24	113.37	
4.42	90.23	
3	70.63	
3.37	47.26	
4.77	61.64	
5.44	72.11	
3.46	174.1	
5.2	245.2	
7.55	388.05	
8.52	502.57	
7.72	475.4	
6.77	348.7	
1.45	37.54	
1.58	47.41	
1.89	59.83	
2.1	88.63	
2.11	87.58	
2.06	56.95	
1.76	18.11	
3.69	27.04	
3.87	35.14	
2.54	84.06	
3.38	119.65	
3.71	108.37	
7.64	20.64	
7.96	20.45	
6.12	24.36	
7.18	27.46	
8.33	37.13	
4.88	61.72	
5.6	77.51	
4.35	27.76	
1.64	21.99	
3.07	37.51	
3.8	52.8	
2.76	35.67	
3.33	27.03	
3.5	32.36	
7.45	72.16	
6.42	88.13	
7.99	104.29	
10.95	107.49	
9.42	99.1	
7.9	69.71	
6.64	76.69	
5.05	66.58	
10.47	47.52	
13.45	71.97	
8.67	89.82	
5.04	50.68	
8.75	71.64	
9.87	72.33	
8.64	33.74	
11.97	23.28	
14.97	32.74	
14.05	48.8	
13.96	67.37	
9.75	63.98	
13.17	37.62	
11.76	36.1	
8.98	24.77	
6.76	21.17	
1.91	6.48	
5.77	58.91	
6.64	24.49	
7.44	30.79	
7.54	44.51	
8.62	45.61	
4.05	42.34	
8.74	12.09	
2.28	13.63	
3.1	23.28	
3.21	28.69	
3.91	30.38	
3.62	33.99	
2.62	31.95	
4.04	26.68	
3.23	31.98	
1.12	68.2	
1.06	67.32	
1.04	74.75	
0.96	65.91	
1.17	81.76	
1.21	81.91