cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/h3sj-xz68
title: NOAA/WDS Paleoclimatology - Bermuda Rise Holocene Cd/Ca and Stable Isotope Data

description: Throughout the last glacial cycle, reorganizations of deep ocean water masses were coincident with rapid millennial-scale changes in climate. Climate changes have been less severe during the present interglacial, but evidence for concurrent deep ocean circulation change is ambiguous.
description: Foraminiferal Cd/Ca and stable isotope data from Bermuda Rise sediment 
cores, used to reconstruct Holocene changes in thermohaline circulation. 

Cd/Ca and stable isotopes measured on Nutallides umbonifera and Cibicidoides 
spp., primarily C. wuellerstorfi, and Uvigerina.
DOI: 10.15468/dl.nq846n
title: Occurrence Download

description: A dataset containing 48 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Marsilea mutica",
 "Country is United States of America",
 "HasCoordinate is true"
 ]
}

 The dataset includes 48 records from 13 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0020852-251009101135966/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25921/hcd3-0976
title: NOAA/WDS Paleoclimatology - Krusic - Xinjiaing MIQA - PCSH - ITRDB CHIN033

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/he5b-c970
title: NOAA/WDS Paleoclimatology - Makassar Strait 2300 Year Leaf Wax Hydrogen Isotope Data

description: Instrumental data suggest that major shifts in tropical Pacific atmospheric dynamics and hydrology have occurred within the past century, potentially in response to anthropogenic warming. To better understand these trends, we use the hydrogen isotopic ratios of terrestrial higher plant leaf waxes (dDwax) in marine sediments from southwest Sulawesi, Indonesia, to compile a detailed reconstruction of central Indo-Pacific Warm Pool (IPWP) hydrologic variability spanning most of the last two millennia. Our paleodata are highly correlated with a monsoon reconstruction from Southeast Asia, indicating that intervals of strong East Asian summer monsoon (EASM) activity are associated with a weaker Indonesian monsoon (IM). Furthermore, the centennial-scale oscillations in our data follow known changes in Northern Hemisphere climate (e.g., the Little Ice Age and Medieval Warm Period) implying a dynamic link between Northern Hemisphere temperatures and IPWP hydrology. The inverse relationship between the EASM and IM suggests that migrations of the Intertropical Convergence Zone and associated changes in monsoon strength caused synoptic hydrologic shifts in the IPWP throughout most of the past two millennia.
description: Hydrogen isotopic (dD) ratios of terrestrial higher plant 
leaf waxes (dDwax, C30 fatty acid) in marine sediments 
from southwest Sulawesi, Makassar Strait, Indonesia 
for the past 2300 years. 

The 14C constraints and age model are the same as in 
Oppo et al. 2009: 
http://www.ncdc.noaa.gov/paleo/pubs/oppo2009/oppo2009.html
DOI: 10.25921/hhw6-d156
title: NOAA/WDS Paleoclimatology - Jacoby - Mount Onnebetsu - PCGN - ITRDB JAPA010

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/hx6b-fm18
title: NOAA/WDS Paleoclimatology - Li - Daocheng - ABFO - ITRDB CHIN018

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/hetn-wr40
title: NOAA/WDS Paleoclimatology - Moaning Cave, California 16 - 8 KYrBP Stable Isotope Data

description: Recent studies document the synchronous nature of shifts in North Atlantic regional climate, the intensity of the East Asian monsoon, and productivity and precipitation in the Cariaco Basin during the last glacial and deglacial period. Yet questions remain as to what climate mechanisms influenced continental regions far removed from the North Atlantic and beyond the direct influence of the inter-tropical convergence zone. Here, we present U-series calibrated stable isotopic and trace element time series for a speleothem from Moaning Cave on the western slope of the central Sierra Nevada, California that documents changes in precipitation that are approximately coeval with Greenland temperature changes for the period 16.5 to 8.8 ka. From 16.5 to 10.6 ka, the Moaning Cave stalagmite proxies record drier and possibly warmer conditions, signified by elevated d18O, d13C, [Mg], [Sr], and [Ba] and more radiogenic 87Sr/86Sr, during Northern Hemisphere warm periods (Bølling, early and late Allerød) and wetter and possibly colder conditions during Northern Hemisphere cool periods (Older Dryas, Inter-Allerød Cold Period, and Younger Dryas). Moaning Cave stable isotope records indicate that wet conditions persisted in this area well beyond 11.5 ka, suggesting the effects of the Younger Dryas event may have been longer lived in the western Sierra Nevada than in Greenland. However, a shifting drip center and corresponding change in seepage water routing may have influenced the trace element records between 10.6 and 9.6 ka. Linkages between northern high-latitude climate and precipitation in the Sierra Nevada suggested here could indicate that, under conditions of continued global warming, this drought-prone region may experience a reduction in Pacific-sourced moisture.
description: Stable oxygen and carbon isotope data from a U-series dated 
stalagmite from Moaning Cave, Sierra Nevada foothills, California. 
Oxygen isotope data has been corrected for variations in seawater 
delta 18O with sea level using Fleming et al., 1998. 
Both oxygen and carbon isotope records display shifts that are 
approximately coeval with changes in Greenland temperature 
between 8.7 and 16.5 ka.
DOI: 10.25921/htka-nf84
title: NOAA/WDS Paleoclimatology - Farewell Lake, Alaska 2000 Year d18O and Temperature Reconstructions

description: Paired oxygen-isotopic analyses of abiotic carbonate and benthic  ostracode shells from lake sediments provide a continuous quantitative record of growing-season temperature for the past 2000 years in the northwestern foothills of the Alaska Range. This record reveals three time intervals of comparable warmth: anno Domini (A.D.) 0-300, 850-1200, and post-1800, the latter two of which correspond to the Medieval Climatic Anomaly and climatic amelioration after the end of the Little Ice Age. The Little Ice Age culminated at A.D. 1700, when the climate was -1.7°C colder than at present. A marked climatic cooling also occurred around A.D. 600, coinciding with extensive glacial advances in Alaska. Comparisons of this temperature record with ostracode trace-element ratios (Mg/Ca, Sr/Ca) further suggest that colder periods were wetter and vice versa during the past 2000 years.
description: Paired oxygen isotope data from abiotic carbonate and benthic  
ostracode shells and reconstructed growing season temperature 
for the past 2000 years from Farewell Lake, in the northwestern 
foothills of the Alaska Range.
DOI: 10.25921/hss3-0w45
title: NOAA/WDS Paleoclimatology - Barrett fire data from Minnesota Plateau Lake - IMPD USMPL001

description: Although recent climatic warming has markedly increased fire activity in many biomes, this trend is spatially heterogeneous. Understanding the patterns and controls of this heterogeneity is important for anticipating future fire-regime shifts at regional scales and for developing land-management policies. To assess climatic and land-cover controls on boreal-forest fire regimes, we conducted macroscopic-charcoal analysis of sediment cores and GIS analysis of landscape variation in south-central Alaska. Results reveal that fire occurrence was highly variable both spatially and temporally over the past seven millennia. At two of four sites, the lack of distinct charcoal peaks throughout much of this period suggests the absence of large local fires, attributed to abundant water bodies in the surrounding landscape that have likely functioned as firebreaks to limit fire spread. In contrast, distinct charcoal peaks suggest numerous local fires at the other two sites where water bodies are less abundant. In periods of the records where robust charcoal peaks allow identification of local fire events over the past 7000 years, fire return intervals varied widely with a range of 138-453 years. Furthermore, the temporal trajectories of local-fire frequency differed greatly among sites and were statistically independent. Inferred biomass burning and mean summer temperature in the region were not significantly correlated prior to 3000 years ago, but became positively related subsequently with varying correlation strengths (r = 0.40-0.66; p = 0.001-0.040 for 2000-yr moving windows). Climatic variability associated with the Medieval Climate Anomaly and the Little Ice Age, along with the expansion of flammable Picea mariana forests, probably have heightened the sensitivity of forest burning to summer-temperature variations over the past three millennia. These results elucidate the patterns and controls of boreal fire-regime dynamics over a broad range of spatiotemporal scales, and imply that anthropogenic climatic warming and associated land-cover changes, in particular lake drying, will interact to affect boreal-forest burning over the coming decades.
DOI: 10.25921/hn0h-n872
title: NOAA/WDS Paleoclimatology - Global and Hemispheric 400 Year Glacier Length Temperature Reconstructions

description: Temperature reconstructions for recent centuries provide a historical context for the warming over the twentieth century. We reconstruct annual averaged surface temperatures of the past 400 years on hemispherical and global scale from glacier length fluctuations. We use the glacier length records of 308 glaciers. The reconstruction is a temperature proxy with decadal resolution that is completely independent of other temperature records. Temperatures are derived from glacier length changes using a linear response equation and an analytical glacier model that is calibrated on numerical model results. The global and hemispherical temperatures reconstructed from glacier length fluctuations are in good agreement with the instrumental record of the last century. Furthermore our results agree with existing multi-proxy reconstructions of temperature in the pre-instrumental period. The temperature record obtained from glacier fluctuations confirms the pronounced warming of the twentieth century, giving a global cumulative warming of 0.94 ± 0.31 K over the period 1830-2000 and a cumulative warming of 0.84 ± 0.35 K over the period 1600-2000.
description: Global, Northern hemisphere, and Southern hemisphere temperature reconstructions for period 1600 to 2000, based on world-wide glacier length changes. Data are the reconstructed temperature anomaly w.r.t. the 1961-1990 average temperature, plus the uncertainty at 95% confidence interval.
DOI: 10.25921/hsg7-ak15
title: NOAA/WDS Paleoclimatology - Mundo - Rahue - ARAR - ITRDB ARGE121

description: Seventeen tree-ring chronologies from the conifer Araucaria araucana (Molina) K. Koch have been analyzed across its range of distribution in Argentina. We studied the growth patterns and determined the main climatic factors influencing A. araucana radial growth. All the chronologies show a strong common signal observed by the high amount of variance explained by the first principal component (PC1) and the high mean correlation (r = 0.597) between the chronologies over the 1676-1974 interval. On this basis, we developed a regional chronology that is 866 years long (A.D. 1140-2006) and includes 621 tree-ring series. Based on the PC2 scores, chronologies were clearly separated by elevation in high- and low-elevation records. Regional tree growth is strongly negatively related to temperatures during summer and fall in the previous-growing season and spring in the current-growing season, respectively. A positive association of tree growth with precipitation is recorded during spring in the current growing season. These results suggest a close relationship between A. araucana tree growth and water availability on a regional scale. This observation is also consistent with a positive and significant correlation between our A. araucana regional record and a reconstruction of November-December rainfall for northern Patagonia inferred from the xeric Austrocedrus chilensis during the past 400 years. Negative correlations between A. araucana regional growth and the sea surface temperature in the Nino 3.4 region reflect the occurrence of above-mean summer temperatures in the region during positive tropical Pacific SST anomalies. The negative relationship with the Antarctic Oscillation (AAO) results from reduced precipitation in our study region during the positive phase of the AAO. The effect of elevation on water availability is consistent with significant correlations between ring-width variations at lower elevations and the Palmer Drought Severity Index during spring and summer in the current growing season. Our study emphasizes the high dendroclimatological potential of A. araucana chronologies for reconstructing past climate variations in northern Patagonia during the past millennium.
description: NOAA Template Raw Measurements file added 2019-04-29.
DOI: 10.25921/htfs-9e48
title: NOAA/WDS Paleoclimatology - Wilkins - East Side Trail - PIPO - ITRDB ID015

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/h6a9-9929
title: NOAA/WDS Paleoclimatology - Northwest Atlantic 116 Year Coralline Algae Mg/Ca Data

description: Climate variability in the North Atlantic has been linked in part to the North Atlantic Oscillation (NAO). The NAO influences marine ecosystems in the northwestern Atlantic and transport variability of the cold Labrador Current. Understanding historic patterns of NAO variability requires long-term and high-resolution climate records that are not available from instrumental data. Here we present the first century-scale proxy record of sea surface temperature (SST) variability from the Newfoundland shelf, a region from which other annual-resolution shallow marine proxies are unavailable. The 116 year record was obtained from three sites along the eastern Newfoundland shelf using laser ablation inductively coupled mass spectrometry–determined Mg/Ca ratios in the crustose coralline alga Clathromorphum compactum. The alga is characterized by a high Mg-calcite skeletonexhibiting annual growth increments and a century-scale lifespan. Results indicate positive correlations between interannual variations in Mg/Ca ratios and both station-based and gridded instrumental SST. In addition, the record shows high spatial correlations to SST across the Newfoundland shelf and the Gulf of St. Lawrence. Before 1950 the Mg/Ca proxy record reveals significant departures from gridded temperature records. While the Newfoundland shelf is generally considered a region of negative correlations to the NAO, the algal time series as well as a recent modeling study suggest a variable negative relationship with the NAO which is strongest after ~1960 and before the mid-1930s.
description: 116 year Mg/Ca data from the massive coralline alga Clathromorphum 
compactum from the Northwest Atlantic. Living plants of C. compactum 
were collected from hard substrate via SCUBA at three localities 
along the eastern coastline of Newfoundland.  

Table 1.  Site Information for C. compactum Specimens Collected Off Newfoundland, Canadaa

Sample     Site                     Location         Lat. N       Long. W      Period
SJ28-L1    Bay Bulls, St. Johns     Newfoundland     47°18.496'   52°47.354'   1917-2006
SJ28-L2    Bay Bulls, St. Johns     Newfoundland     47°18.496'   52°47.354'   1913-2006
SJ21-L1    Bay Bulls, St. Johns     Newfoundland     47°18.496'   52°47.354'   1918-2006
SJ21-L2    Bay Bulls, St. Johns     Newfoundland     47°18.496'   52°47.354'   1918-2006
QP4-3-L1   Quirpon Island           Newfoundland     51°35.135'   55°25.490'   1931-2006
QP4-3-L2   Quirpon Island           Newfoundland     51°35.135'   55°25.490'   1931-2006
170176     Cape St. Martin          Newfoundland     50°1.5'      55°53'       1890-1963
DOI: 10.25921/hwxv-a390
title: NOAA/WDS Paleoclimatology - Quelccaya Ice Cap, Peru 1800 Year Oxygen Isotope, Dust, and Major Ions Data

description: Ice cores from low latitudes can provide a wealth of unique information about past climate in the tropics, but they are difficult to recover and few exist. Here, we report annually resolved ice core records from the Quelccaya ice cap (5670 masl) in Peru which extend back ~1800 years and provide a high-resolution record of climate variability there. Oxygen isotopic ratios (d18O) are linked to sea-surface temperatures in the tropical eastern Pacific, while concentrations of ammonium and nitrate document the dominant role played by the migration of the Intertropical Convergence Zone in the region of the tropical Andes. Quelccaya continues to retreat and thin: Radiocarbon dates on wetland plants exposed along its retreating margins indicate it has not been smaller for at least six millennia. 
description: Oxygen Isotope, dust and major ions data from ice cores collected on the Quelccaya Ice Cap, Peru. Data are at annual or decadal resolution for the past 1800 years. These new records are based on freshly cut ice samples; previous Quelccaya data were measured on bottled water samples. Included are Annual averages of d18O, net balance (accumulation), dust concentrations, and major ion concentrations for the Quelccaya Summit Dome (QSD) core from thermal year 226/227 to 2009/2010 CE; Decadal averages of d18O and net balance (accumulation) for the Quelccaya North Dome (QND) core from thermal year 1000/1001 to 1999/2000 CE; Decadal averages of sea surface temperatures (SSTs) in the NINO4 region from thermal year 230 to 2009/2010, reconstructed from the relationship between NINO4 SST  and QSD d18O as shown in Fig S5 in the Supplementary Materials, Thompson et al. 2013; Annual layer thicknesses in Quelccaya Summit Dome core from thermal year 1000/1001 to 1899/1900 CE. These are not corrected for density or thinning. Annual layer thicknesses were determined by seasonal variations in dust and d18O, measured from high dust concentration and high d18O in successive dry seasons (austral winter).  Also included are Huascaran d18O and NO3- data: d18O and nitrate from Huascaran 1993 Core 2. Decadal averages from thermal year 830/831 to 1991/1992, quasi-decadal averages from thermal year 200/201 to 829/830 CE. Huascaran decadal d18O data are from Thompson et al. (2006) PNAS, vol 103, 10,536-10,543.
Update: quelccaya2013huas.txt file corrected 8/8/2013.  Column 4 (NO3 values) offset by one decade too old in original version. All NO3 values shifted up one row August 2013
DOI: 10.25921/h6ht-fv30
title: NOAA/WDS Paleoclimatology - Stalagmite Oxygen and Carbon Isotope Data from Hoti Cave, Oman Over the Past 333000 Years

description: The source and seasonality of rainfall in southern Arabia during the early- to mid-Holocene and preceeding humid periods is controversial because fossil lacustrine sediments provide solely indirect information on the amount of rainfall. Hydrogen and oxygen isotope measurements on fluid inclusion water trapped in Holocene and Pleistocene stalagmites from Hoti Cave in Northern Oman are direct indicators of the isotopic composition of paleoprecipitation. Isotope values of fluid inclusions formed during peak interglacial periods plot along monsoonal water lines and are indicative of a southern monsoonal moisture source. The last monsoon dominated period lasting from ~10,100 to 6300 years before present was terminated within a few decades in south-eastern Arabia. The subsequent reduction in rainfall amount and change from predominantly summer to predominantly winter rainfall had a profound impact on human communities living in this area and triggered migration from inland to coastal areas where resources were more abundant.