# 1500 Year Sedimentological and Geochemical Data from Lakes Tota and Siscunsi in the Northern Andes
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#               World Data Service for Paleoclimatology, Boulder
#                                   and
#                      NOAA Paleoclimatology Program
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# 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.ncei.noaa.gov/access/paleo-search/study/39047
#   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-lake-39047.json
#   Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata.
#
# Data_Type: Paleolimnology
#
# Dataset_DOI: 10.25921/ggb0-2987
#
# Science_Keywords: 
#---------------------------------------
# Resource_Links
#
# Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/southamerica/colombia/bird2024/bird2024-tota-cn-clay.txt
#   Data_Download_Description: NOAA Template File; Lake Tota C/N, Clay Data
#
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# Contribution_Date
#   Date: 2024-02-22
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# File_Last_Modified_Date
#   Date: 2025-04-08
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# Title
#   Study_Name: 1500 Year Sedimentological and Geochemical Data from Lakes Tota and Siscunsi in the Northern Andes
#---------------------------------------
# Investigators
#   Investigators: Bird, Broxton W.; Steinman, B.A.; Escobar, A.; Correa-Metrio, A.; Holper, K.; Gibson, D.K.; Mark, S.; Fonseca, H.
#---------------------------------------
# Description_Notes_and_Keywords
#   Description: Elevations of lakes: Tota = 3015m; Siscunsi = 3680m
#         Provided Keywords: Medieval Climate Anomaly, Little Ice Age, Common Era, Paleoclimate, Neo Tropics, South America
#---------------------------------------
# Publication
#   Authors: Bird, B.W., B.A. Steinman, J. Escobar, A. Correa-Metrio, K. Holper, D.K. Gibson, S. Mark, H. Fonseca
#   Published_Date_or_Year: 2024
#   Published_Title: Synchronous tropical Andean hydroclimate variability during the last millennium
#   Journal_Name: Journal of Geophysical Research - Atmospheres
#   Volume: 129
#   Edition: 
#   Issue: 13
#   Pages: 
#   Report_Number: e2023JD040255
#   DOI: 10.1029/2023JD040255
#   Online_Resource: 
#   Full_Citation: 
#   Abstract: The impact of latitudinal variations in the Intertropical Convergence Zone (ITCZ) on northern Andean hydroclimate during the Medieval Climate Anomaly (MCA; 950–1,150 CE) and Little Ice Age (LIA; 1,300–1,850 CE) is uncertain. Synthesis of two new lacustrine paleoclimate records from the Eastern Colombian Andes with existing circum-Andean records shows that effective moisture anomalies were synchronous and in phase across the tropical Andes during the last millennium. During the MCA, when the ITCZ was shifted northward, topographically controlled responses in the northern Andes to vigorous atmospheric convection resulted in low precipitation and high evaporation, while precipitation was also reduced in the southern tropical Andes. During the LIA, precipitation decreased in the northern Andes as the ITCZ migrated southward but was offset by cooling that lowered evaporation, establishing high effective moisture. In the southern tropical Andes, the southward ITCZ position simultaneously strengthened precipitation, increasing effective moisture. MCA-like responses to continued warming trends could similarly reduce northern Andean precipitation while increasing evaporation, thereby lowering effective moisture and possibly reducing water resource availability.
#---------------------------------------
# Funding_Agency
#   Funding_Agency_Name: US National Science Foundation
#   Grant: Award 1445649
#---------------------------------------
# Funding_Agency
#   Funding_Agency_Name: Indiana University
#   Grant: International Development Fund and Research Support Funds Grant
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# Site_Information
#   Site_Name: Lake Tota
#   Location: Colombia
#   Northernmost_Latitude: 5.497382
#   Southernmost_Latitude: 5.497382
#   Easternmost_Longitude: -72.978709
#   Westernmost_Longitude: -72.978709
#   Elevation_m: 3015
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# Data_Collection
#   Collection_Name: Tota and Siscunsi C/N, Clay Bird2024
#   First_Year: 1200
#   Last_Year: -50
#   Time_Unit: calendar year before present
#   Core_Length_m: 
#   Parameter_Keywords: geochemistry
#   Notes: 
#---------------------------------------
# Chronology_Information 
#   Chronology: Radiocarbon
#   Chronology_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/templates/noaa-wds-paleo-14c-terms.csv
#     Chronology_Download_Description: Radiocarbon terms and definitions.
#   Chronology_Notes: Core H13
#   Rejection_Rationale:
#   Reservoir_Method:
#   Calibration_Method:
#   Age_Model_Method:
#   Missing_Values: 
#   Chronology_Table:
# lab_code	depth_end_cm	depth_start_cm	material_dated	age_14C_BP1950	age_14C_1s_yr	weight_mg	calib_curve
# UCI-148018	19	20	Charcoal	580	50	0.042	IntCal
# UCI-148022	37	38	Charcoal	1260	70	0.029	IntCal
#------------------
# Chronology_Information
#   Chronology: 210-Lead
#   Chronology_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/templates/noaa-wds-paleo-210pb-terms.csv
#     Chronology_Download_Description: 210-Lead terms and definitions.
#   Chronology_Notes: Core H13
#   Supported_Pb_Method: 
#   Age_Model_Method: 
#   Missing_Values: NA
#   Chronology_Table:
# depth_end_cm	depth_start_cm	210Pb_act_Bq/g	210Pb_act_1s_Bq/g	214Pb_act_Bq/g	214Pb_act_1s_Bq/g	210Pbxs_act_Bq/g	210Pbxs_act_1s_Bq/g	age_BP1950	age_1s_yr
# 0	1	0.31	0.147	0.0658	0.0416	0.2442	0.1054	-63.0682869229593	3.58102559229055
# 1	2	0.369	0.134	0.0988	0.0308	0.2702	0.1032	-61.0023988255064	3.61337361465135
# 2	3	0.368	0.0946	0.0853	0.0274	0.2827	0.0672	-58.095080363569	3.72505957731767
# 3	4	0.358	0.0904	0.0573	0.0187	0.3007	0.0717	-53.7644492059783	3.87325866850549
# 4	5	0.405	0.0981	0.0765	0.0218	0.3285	0.0763	-48.375923242003	4.07662926135829
# 5	6	0.403	0.0972	0.0657	0.0301	0.3373	0.0671	-41.9525519841891	4.43827814599367
# 6	7	0.383	0.0885	0.0848	0.0208	0.2982	0.0677	-32.8209262085513	4.92128382703849
# 7	8	0.33	0.0825	0.0637	0.0202	0.2663	0.0623	-22.6120866567185	5.67854252162462
# 8	9	0.2	0.0493	0.0478	0.00866	0.1522	0.04064	-8.78224222122276	6.81249465637435
# 8	9	0.214	0.0593	0.0705	0.014	0.1435	0.0453	13.9660521603041	7.91077738376222
# 9	10	0.123	0.0352	0.0522	0.0112	0.0708	0.024	44.5927755490309	9.16047771735662
# 10	11	0.0195	0.00758	0.0131	0.00349	0.0064	0.00409	55.0710574902353	9.62736716795177
# 11	12	0.0219	0.00676	0.0135	0.0034	0.0084	0.00336	77.8371542677453	13.6877346777811
# 12	13	0.0242	0.00787	0.0142	0.00478	0.01	0.00309	NA	NA
# 13	14	0.0162	0.00599	0.0179	0.00448	-0.0017	0.00151	NA	NA
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# 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)
#
## Tota_avg_depth	depth,,,centimeter,,paleolimnology,,,N,Lake Tota H13 Composite Depth
## Tota_H13_%clay	clay,,,percent,,paleolimnology,,,N,Lake Tota Clay
## Tota_H13_cn	carbon/nitrogen,,,dimensionless,,paleolimnology,,,N,Lake Tota C/N
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# Data:
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing_Values: NA
Tota_avg_depth	Tota_H13_%clay	Tota_H13_cn
0.75	41.20	NaN
1.75	38.38	8.75
2.75	36.86	9.00
3.75	42.48	9.04
4.75	39.60	8.96
5.75	38.52	9.41
6.75	39.38	9.57
7.25	NA	9.34
7.75	NA	9.88
8.5	48.91	9.52
9.5	52.91	9.92
10.5	53.02	7.78
11.5	53.24	8.26
12.5	56.03	8.28
13.5	55.31	8.53
14.5	48.98	8.54
15.5	50.58	9.67
16.5	49.16	9.28
17.5	46.48	8.99
18.5	43.07	9.39
19.5	43.17	9.39
20.5	42.65	9.78
21.5	43.55	9.77
22.5	42.72	10.77
23.5	40.21	NA
24.5	39.14	10.78
25.5	40.35	NA
26.5	41.27	10.66
27.5	40.54	10.61
28.5	38.14	NA
29.5	37.30	10.62
30.5	38.39	10.72
31.5	37.18	10.63
32.5	37.96	10.58
33.5	37.89	10.58
34.5	37.74	10.61
35.5	38.65	10.68
36.5	37.81	10.77
37.5	38.59	10.80
38.5	37.17	10.98
39.5	NA	10.88