cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/dr5c-v716
title: NOAA/WDS Paleoclimatology - Sachs and Lehman 1999 Subtropical North Atlantic Alkenone SST Reconstruction

description: A reconstruction of sea surface temperature based on alkenone unsaturation ratios in sediments of the Bermuda Rise provides a detailed record of subtropical climate from 60,000 to 30,000 years ago. Northern Sargasso Sea temperatures changed repeatedly by 2° to 5°C, covarying with high-latitude temperatures that were previously inferred from Greenland ice cores. The largest temperature increases were comparable in magnitude to the full glacial-Holocene warming at the site. Abrupt cold reversals of 3° to 5°C, lasting less than 250 years, occurred during the onset of two such events (Greenland interstadials 8 and 12), suggesting that the largest, most rapid warmings were especially unstable.
DOI: 10.25921/dp2a-7f73
title: NOAA/WDS Paleoclimatology - Wickman - Fish Lake - PIPO - ITRDB OR039

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
description: NOAA Template Chronology file added 2018-12-20. NOAA Template Raw Measurements file added 2019-02-08.
DOI: 10.25921/d4q0-fh49
title: NOAA/WDS Paleoclimatology - Jacoby - Nazina Treeline - PCGL - ITRDB AK073

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
description: NOAA Template Chronology file added 2018-12-20. NOAA Template Raw Measurements file added 2019-02-08.
DOI: 10.25921/dds1-e950
title: NOAA/WDS Paleoclimatology - Tahiti 9.5ka Fossil Coral Geochemical Data

description: The Integrated Ocean Drilling Program (IODP) Expedition 310 recovered drill cores from the drowned reefs around the island of Tahiti (17°40'S, 149°30'W), many of which contained samples of massive corals from the genus Porites. Herein we report on one well-preserved fossil coral sample: a 13.6 cm long Porites sp. dated by uranium series techniques at 9523 ± 33 years. Monthly d18O and Sr/Ca determinations reveal nine clear and robust annual cycles. Coral d18O and Sr/Ca determinations estimate a mean temperature of ~24.3°C (~3.2°C colder than modern) for Tahiti at 9.5 ka; however, this estimate is viewed with caution since potential sources of cold bias in coral geochemistry remain to be resolved. The interannual variability in coral d18O is similar between the 9.5 ka coral record and a modern record from nearby Moorea. The seasonal cycle in coral Sr/Ca is approximately the same or greater in the 9.5 ka coral record than in modern coral records from Tahiti. Paired analysis of coral d18O and Sr/Ca indicates cold/wet (warm/dry) interannual anomalies, opposite from those observed in the modern instrumental record.
description: Coral Sr/Ca and oxygen isotopes from a fossil Porites colony recovered offshore of Maara, Tahiti by IODP Expedition 310. The data are analyzed to investigate mean, interannual, and seasonal temperature and salinity (evaporation/precipitation) variations in the Early Holocene. The record is nine years long. A section of a Porites colony, 310-M0007B-11R-2, was recovered from site M0007 at 57 m below sea level. Oxygen and carbon isotopic and Sr/Ca analyses and were performed. Isotopic values are reported in delta notation relative to the Vienna PeeDee Belemnite (VPDB) isotopic standard. The U-Th chemistry was performed in the High-Precision Spectrometry and Environment Change Laboratory (HISPEC) of the Department of Geosciences, National Taiwan University. U/Th results are included in Table A1, Delong et al. 2010. The coral geochemistry was converted from the depth domain to the time domain by assigning maximum (minimum) coral Sr/Ca to minimum (maximum) SST climatology, then linearly interpolating to monthly intervals; the Sr/Ca chronology was applied to the isotopic records.
DOI: 10.25921/dk3q-3a26
title: NOAA/WDS Paleoclimatology - Skinner fire data from WEST (San Pedro Martir) - IMPD MXWES001

description: Records of past fire occurrence from tree rings, charcoal found in lake sediments, and other proxies. Parameter keywords describe what was measured in this data set.  Additional summary information can be found in the abstracts of papers listed in the data set citations.  Additional information on the International Multiproxy Database (IMPD) data set procedures are also available.
DOI: 10.25921/dndk-rp96
title: NOAA/WDS Paleoclimatology - Wright - Weixi County - ABFO - ITRDB CHIN028

description: The Asian monsoon system affects more than half of humanity worldwide, yet the dynamical processes that govern its complex spatiotemporal variability are not sufficiently understood to model and predict its behavior, due in part to inadequate long-term climate observations. Here we present the Monsoon Asia Drought Atlas (MADA), a seasonally resolved gridded spatial reconstruction of Asian monsoon drought and pluvials over the past millennium, derived from a network of tree-ring chronologies. MADA provides the spatiotemporal details of known historic monsoon failures and reveals the occurrence, severity, and fingerprint of previously unknown monsoon megadroughts and their close linkages to large-scale patterns of tropical Indo-Pacific sea surface temperatures. MADA thus provides a long-term context for recent monsoon variability that is critically needed for climate modeling, prediction, and attribution.
description: Purpose of Collection:  
# Climatology - precipitation analysis NOAA Template Raw Measurements file added 2019-04-08.
DOI: 10.25921/d1ft-sb46
title: NOAA/WDS Paleoclimatology - Vietnam Coral Radiocarbon Data from 1571-1950 CE

description: The East Asian Monsoon (EAM) impacts storms, freshwater availability, wind energy production, coal consumption, and subsequent air quality for billions of people across Asia. Despite its importance, the EAM's long-term behavior is poorly understood. Here we present an annually resolved record of EAM variance from 1584 to 1950 based on radiocarbon content in a coral from the coast of Vietnam. The coral record reveals previously undocumented centennial scale changes in EAM variance during both the summer and winter seasons, with an overall decline from 1600 to the present. Such longterm variations in monsoon variance appear to reflect independent seasonal mechanisms that are a combination of changes in continental temperature, the strength of the Siberian High, and El Niño Southern Oscillation behavior. We conclude that the EAM is an important conduit for propagating climate signals from the tropics to higher latitudes.
description: Provided Keywords: coral, radiocarbon, ocean circulation
DOI: 10.25921/dya4-4405
title: NOAA/WDS Paleoclimatology - Cook - Gasa-1 - JURE - ITRDB BT019

description: The Asian monsoon system affects more than half of humanity worldwide, yet the dynamical processes that govern its complex spatiotemporal variability are not sufficiently understood to model and predict its behavior, due in part to inadequate long-term climate observations. Here we present the Monsoon Asia Drought Atlas (MADA), a seasonally resolved gridded spatial reconstruction of Asian monsoon drought and pluvials over the past millennium, derived from a network of tree-ring chronologies. MADA provides the spatiotemporal details of known historic monsoon failures and reveals the occurrence, severity, and fingerprint of previously unknown monsoon megadroughts and their close linkages to large-scale patterns of tropical Indo-Pacific sea surface temperatures. MADA thus provides a long-term context for recent monsoon variability that is critically needed for climate modeling, prediction, and attribution.
description: Purpose of Collection:  
# Climatology - precipitation analysis  
#  NOAA Template Raw Measurements file added 2019-04-08. July 2024: Elevation added by WDS-Paleo using get_elev_point() from the elevatr R package with the AWS Terrain Tiles (aws) and WGS 84 reference frame.
DOI: 10.25921/dzjc-r513
title: NOAA/WDS Paleoclimatology - West European Shelf 2000 Year BWT-SST Reconstructions

description: Marine localities on the west European shelf have been studied to reconstruct the nearshore palaeoceanography of the last two millennia. The sites form a transect from the Iberian margin northeastward via Scotland to western Norway and Iceland. Proxies used for palaeoclimatic reconstructions include stable isotopes, benthic and planktonic foraminfera, diatoms, dinoflagellates, as well as geochemical and sedimentological parameters. Major changes as well as long-term trends in oceanographic conditions are observed in the records, including a general cooling trend through much of the last millennium. There is a clear linkage between the atmospheric processes and the oceanic circulation, and the ocean temperature variability in the records can be correlated with the so-called 'Mediaeval Warm Period' and 'Little Ice Age'. These oscillations are, however, by no means unique within the last two millennia. As an example, sea surface temperatures to the north of Iceland and on the Iberian margin were higher in the Roman Warm Period than at any time during the 'Mediaeval Warm Period'. However, the palaeoceanographic record generally supports a distinct cooling at the transition between the 'Mediaeval Warm Period' and the 'Little Ice Age'. While a number of records indicate a warming of coastal and shelf waters during the last 200 years, the twentieth century does not appear to be unusual when the proxy records spanning the last two millennia are examined.
description: Multi-proxy sediment data and water temperature reconstructions 
for the past 2000 years from a transect of marine sediment cores 
along the western European Margin.  Proxy data include stable 
isotopes, benthic and planktonic foraminfera, diatoms, 
dinoflagellates, and geochemical and sedimentological parameters. 

Iberian Margin Cores  
PO287-26-1B box core:     38°33.49'N, 9°21.84'W, water depth 96 m 
PO287-26-3G gravity core: 38°33.49'N, 9°21.84'W, water depth 96 m
D13902 piston core:       38°33.24'N, 9°20.13'W, water depth 90 m

Scotish Sea Loch Core 
Loch Sunart core GC023:   56°40.324'N, 5°50.328'W 

Norwegian Margin Cores 
Box core HM115-16TBC:     60°51.991'N, 03°43.955'E, water depth 338 m 
Gravity core HM115-16GC:  60°52N, 03°44'E, water depth 345 m 

North Iceland shelf core
MD99-2275 piston core:    66°33.10'N, 17°41.98'W, water depth 410 m
DOI: 10.25921/dhsc-r561
title: NOAA/WDS Paleoclimatology - Bigler - Sils-Maria GR Blais dal Fö - PICE - ITRDB SWIT273

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
description: NOAA Template Chronology file added 2018-12-19. NOAA Template Raw Measurements file added 2019-02-05.
DOI: 10.25921/dtwk-3t07
title: NOAA/WDS Paleoclimatology - Mid-Pleistocene South Atlantic Ocean Carbonate Chemistry and Circulation Reconstructions

description: Over the past three million years, Earth’s climate oscillated between warmer interglacials with reduced terrestrial ice volume and cooler glacials with expanded polar ice sheets. These climate cycles, as reflected in benthic foraminiferal oxygen isotopes, transitioned from dominantly 41-kyr to 100-kyr periodicities during the mid-Pleistocene 1,250 to 700 kyr ago (ka). Because orbital forcing did not shift at this time, the ultimate cause of this mid-Pleistocene transition remains enigmatic. Here we present foraminiferal trace element (B/Ca, Cd/Ca) and Nd isotope data that demonstrate a close linkage between Atlantic Ocean meridional overturning circulation and deep ocean carbon storage across the mid-Pleistocene transition. Specifically, between 950 and 900 ka, carbonate ion saturation decreased by 30 µmol kg−1 and phosphate concentration increased by 0.5 µmol kg−1 coincident with a 20% reduction of North Atlantic Deep Water contribution to the abyssal South Atlantic. These results demonstrate that the glacial deep Atlantic carbon inventory increased by approximately 50 Gt during the transition to 100-kyr glacial cycles. We suggest that the coincidence of our observations with evidence for increased terrestrial ice volume reflects how weaker overturning circulation and Southern Ocean biogeochemical feedbacks facilitated deep ocean carbon storage, which lowered the atmospheric partial pressure of CO2 and thereby enabled expanded terrestrial ice volume at the mid-Pleistocene transition.
description: Calculation and error propagation of final products (DeltaDIC, %NAW) available in manuscript supplementary tables and upon request.
      Provided Keywords: MPT, MOC, DIC, benthic foram, B/Ca, Cd/Ca, Nd isotopes
DOI: 10.25921/dn55-3m74
title: NOAA/WDS Paleoclimatology - Solomina - Esso, Kamchatka - LAGM - ITRDB RUSS211

description: The Asian monsoon system affects more than half of humanity worldwide, yet the dynamical processes that govern its complex spatiotemporal variability are not sufficiently understood to model and predict its behavior, due in part to inadequate long-term climate observations. Here we present the Monsoon Asia Drought Atlas (MADA), a seasonally resolved gridded spatial reconstruction of Asian monsoon drought and pluvials over the past millennium, derived from a network of tree-ring chronologies. MADA provides the spatiotemporal details of known historic monsoon failures and reveals the occurrence, severity, and fingerprint of previously unknown monsoon megadroughts and their close linkages to large-scale patterns of tropical Indo-Pacific sea surface temperatures. MADA thus provides a long-term context for recent monsoon variability that is critically needed for climate modeling, prediction, and attribution.
description: Purpose of Collection:  
# Climatology - precipitation analysis  NOAA Template Raw Measurements file added 2019-04-08. July 2024: Elevation added by WDS-Paleo using get_elev_point() from the elevatr R package with the AWS Terrain Tiles (aws) and WGS 84 reference frame.
DOI: 10.25921/d0g7-3v22
title: NOAA/WDS Paleoclimatology - Dune Lake, Alaska 12,000 Year Multiproxy Sediment Data

description: Opal, organic C and N contents, and organic d13C and d15N stable isotopes were analyzed on a sedimentary sequence spanning the past ~12,000 years from Dune Lake, a shallow groundwater-fed lake in the boreal forest region of central interior Alaska. The chronology, based on 210Pb and 15 AMS radiocarbon dates on terrestrial materials, indicates that 5 m of biogenic sediment accumulated following dune stabilization at ~10,000 cal yr BP. Previous studies on lake level and pollen were synthesized with these data to assess Holocene changes in hydrogeology and climate. Variability in groundwater level and flux has a strong control on lake level and are negatively correlated with the d13C of organic matter produced within the lake. This relationship results from the input of groundwater with high pCO2 and with dissolved inorganic carbon depleted in 13C, which subsequently affects lake phytoplankton d13C signatures. A rapid rise in lake level between ca. 11,000 and 9,500 cal yr BP coincided with stabilization of the dune field adjacent to the lake and expansion of vegetation around the lake, including white spruce. Organic d13C values are relatively low and constant between about 10,000 and 6,000 cal yr BP, and then steadily increase until about 2,000 cal yr BP, suggesting a pattern of high followed by dropping lake levels generally consistent with results from core-transect studies. Higher-frequency fluctuations of 2–3 ‰ in d13C are common, and suggest variability in aspects of the lake-carbon cycle over multi-decadal timescales. Recent trends in groundwater and lake level, river discharge, and precipitation suggest an important role for wintertime precipitation in the regional groundwater system. The unusual hydrology of this system relative to most other lakes studied for paleoclimate in this region provides a novel insight into different seasonal aspects of Alaskan paleoclimatology. The record is consistent with a general long-term decrease in wintertime precipitation, possibly accompanied by an increase in permafrost extent, over the Holocene.
description: Multiproxy sediment data from Dune Lake, Alaska, for the past 12,000 years. 
Dune Lake is a shallow, closed basin, groundwater-fed lake located in 
the boreal forest of central Alaska. Paleoenvironmental proxies measured 
include Opal, organic C and N contents, and organic d13C and d15N stable isotopes. Dune Lake, Alaska: 64.42°N, 149.90°W, 134m elevation, 12ha, ~9m water depth.
Dune Lake core details:
Core name  Coring type                      Date taken Length(cm)   Lat.N   Long.W  Notes
A          Livingstone                      April 1993     619      64.42   149.90  through ice
Glew       Glew                                1994        38       64.42   149.90  good sediment water interface
F          Livingstone in polycarbonate tube   1996        180      64.42   149.90  good sediment water interface
"2005"     Piston in polycarbonate tube        2005        30       64.42   149.90  good sediment water interface
DOI: 10.25921/djdf-pp20
title: NOAA/WDS Paleoclimatology - Pederson - Butte Update - PSME - ITRDB MT151

description: Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives.  Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets.  Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncdc.noaa.gov/paleo/treeinfo.htmll
description: Upper Missouri River Basin Streamflow project NOAA Template Raw Measurements file added 2020-01-15.
DOI: 10.25921/dk43-t366
title: NOAA/WDS Paleoclimatology - Lake CF8, Baffin Island 2,400 Year Multiproxy Sediment Data

description: The Arctic has a disproportionately large response to changes in radiative forcing of climate, and arctic lacustrine ecosystems respond sensitively to these changes. The goal of this research is to generate high-resolution climate records for the past two millennia using multiple proxies in order to place 20th and 21st century climate and environmental change into a long-term context. We use a 14C- and 210Pb-dated surface core from Lake CF8 on northeastern Baffin Island, Arctic Canada to generate a high-resolution multiproxy reconstruction of climate and environmental change. Throughout the late Holocene, primary productivity in Lake CF8 was low, but increased almost 20-fold in the past 200 years. Insect (Chironomidae) assemblages also show dramatic changes since 1950 AD, with cold stenothermous chironomid taxa disappearing from the record altogether. These changes in productivity and chironomid assemblages are unprecedented in the past 5,000 years. The dramatic ecological shifts that occurred at Lake CF8 have also been observed elsewhere in the Arctic, and will likely continue at ever-increasing rates as anthropogenic inputs of greenhouse gases continue to cause climate warming and enhanced lacustrine primary production.
description: Multiproxy geochemical and chironomid productivity record from surface sediment core 05CF8SC collected in Lake CF8, northeastern Baffin Island, Canada. Lake CF8: 70°33'N, 68°57'W, 195 m elevation, 10m. depth. LAST UPDATE: 210Pb and 14C ages added 4/15/2021.
DOI: 10.25921/dmeb-8a29
title: NOAA/WDS Paleoclimatology - 8.2k Event Speleothem Oxygen Isotope Data

description: Oxygen isotope records of stalagmites from China and Oman reveal a weak summer monsoon event, with a double-plunging structure, that started 8.21 ± 0.02 kyr B.P. An identical but antiphased pattern is also evident in two stalagmite records from eastern Brazil, indicating that the South American Summer Monsoon was intensified during the 8.2 kyr B.P. event. These records demonstrate that the event was of global extent and synchronous within dating errors of <50 years. In comparison with recent model simulations, it is plausible that the 8.2 kyr B.P. event can be tied in changes of the Atlantic Meridional Overturning Circulation triggered by a glacial lake draining event. This, in turn, affected North Atlantic climate and latitudinal position of the Intertropical Convergence Zone, resulting in the observed low-latitude monsoonal precipitation patterns.
description: Oxygen isotope data from six stalagmites in China, the Middle East, 
and South America over the 8.2k Climate Event.  The stalagmites are 
from Dongge Cave, southern China (D4 and DA, 25°17'N, 108°5'E), 
Qunf Cave, Oman (Q5, 17°10'N, 54°18'E), Hoti Cave, Oman (H14, 23°05'N, 
57°21'E), Padre Cave (PAD07, 13°13'S, 44°3'W), eastern Brazil, 
and Paixão Cave (PX5, 12°39'S, 41°3'W), eastern Brazil