cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.966218
title: Carbonate system parameters calculated from measured TA/DIC and measured TA/pH pairs, respectively, during POLARSTERN cruise PS111 (ANT-XXXIII/2)

description: Aragonite undersaturation (Ωar &lt; 1) events are projected to rapidly increase in frequency and duration in the Antarctic Weddell Sea by 2050 due to uptake of increasing amounts of anthropogenic CO2. Thecosome pteropods are bioindicators of ocean acidification (OA) because their aragonite shell dissolves easily at low Ωar. This study aimed to establish a baseline of the current shell dissolution state of the pteropod Limacina helicina antarctica in relation to the water column Ωar in the southern Weddell Sea during austral summer 2018 that can be used for monitoring of progressing OA in the Weddell Sea. The present dataset provides depth profiles of the carbonate system parameters determined on water bottle samples collected alongside the CTD casts during PS111 covering pteropod collection depth and beyond. The carbonate system was calculated with the R package 'seacarb' from measured TA/DIC and TA/pH pairs, respectively. Included in this dataset are also concentrations of silicate, phosphate and chlorophyll a.
DOI: 10.1594/pangaea.973113
title: A Global Dataset for Seasonal to Annual Forecasts of GRACE-like Gridded Terrestrial Water Storage (2010-2024)

description: This dataset is linked to the paper titled "Observation-Driven Forecast of Global Terrestrial Water Storage and Evaluation for 2010–2024", published in WRR, which focuses on seasonal to annual forecasting terrestrial water storage anomalies across the global land surface. The dataset provides global forecasts of terrestrial water storage anomalies using machine learning, based on near real-time observations of precipitation, land and sea surface temperatures, sea surface salinity, soil moisture, evaporation, and sixteen climate indices. Forecasts are initiated monthly from December 2009 to March 2024, with lead times of up to twelve months. The data is available both with and without seasonal and trend components, at a one-degree grid scale, covering global land areas including Antarctica and Greenland. The dataset also includes multiple versions of the global mean TWSC time series for each lead time. We expect this dataset will contribute to drought and flood early warning services, sea level forecasting, constraints on hydrological and land surface model forecasts, and Earth orientation parameter forecasting, and address the latency issue in accessing standard GRACE TWSC products.
description: The zip folders (CSR, GSFC and JPL) contains: Forecasted TWSC by training machine learning on CSR, GSFC, and JPL mascons.
DOI: 10.1594/pangaea.966219
title: Dry mass, nitrogen and carbon mass of thecosome pteropods and further mesozooplankton higher taxonomic groups during Polarstern cruise PS111 (ANT-XXXIII/2)

description: At high latitudes, thecosome pteropods (marine pelagic mollusks) can dominate zooplankton communities and are important food web components. Due to their calcium carbonate shell made of aragonite, they significantly contribute to ocean carbon flux and are particularly vulnerable to ocean acidification. Despite their prominent role in the pelagic ecosystem, knowledge on the importance of thecosome pteropods for the Weddell Sea zooplankton community is scarce. Furthermore, aragonite undersaturation (Ωar &lt; 1) events are projected to rapidly increase in frequency and duration in the Antarctic Weddell Sea by 2050 due to uptake of increasing amounts of anthropogenic CO2. This potentially perils thecosomes by inducing shell dissolution. The project aim was to describe the importance of thecosome pteropods in terms of their biomass contribution relative to that of the other higher taxonomic mesozooplankton groups in the Weddell Sea pelagic ecosystem and to describe the current shell dissolution state of thecosome pteropods in relation to prevailing ocean carbonate chemistry conditions as a benchmark for possible future monitoring of ongoing ocean change processes. This dataset includes biomass (dry mass, nitrogen and carbon mass) of thecosomes (Limacina helicina antarctica) and other mesozooplankton groups usually collected from 500 m depth during PS111 at the eastern Weddell Sea Shelf and the Filchner-Ronne ice shelf.
DOI: 10.1594/pangaea.966220
title: Size/mass relations of the thecosome pteropod Limacina helicina antarctica during Polarstern cruise PS111 (ANT-XXXIII/2)

description: At high latitudes, thecosome pteropods (marine pelagic mollusks) can dominate zooplankton communities and are important food web components. Due to their calcium carbonate shell made of aragonite, they significantly contribute to ocean carbon flux and are particularly vulnerable to ocean acidification. Furthermore, aragonite undersaturation (Ωar &lt; 1) events are projected to rapidly increase in frequency and duration in the Antarctic Weddell Sea by 2050 due to uptake of increasing amounts of anthropogenic CO2. This potentially perils thecosomes by inducing shell dissolution. The project aim was to describe the importance of thecosome pteropods in terms of their biomass contribution relative to that of other mesozooplankton groups in the Weddell Sea pelagic ecosystem and to describe the current shell dissolution state of thecosome pteropods in relation to prevailing ocean carbonate chemistry conditions as a benchmark for possible future monitoring of ongoing ocean change processes. This dataset includes size/mass and size/shell mass data of individual thecosome specimen of the species Limacina helicina antarctica that were usually collected from 500–0 m depth during PS111 at the eastern Weddell Sea Shelf and the Filchner-Ronne ice shelf.
DOI: 10.1594/pangaea.955992
title: Sea surface temperature and oxygen isotopes of sediment core I106
DOI: 10.1594/pangaea.963956
title: Hydroclimate records from the eastern tropical Indian Ocean of sediment core SO189-119KL

description: Planktic foraminiferal oxygen isotopes, Mg/Ca and Mg/Ca-derived SST estimates of sediment core SO189/2_119KL. The isotopic composition of the samples was measured using a Finnigan MAT 251 mass spectrometer, which is connected with automatic lines for carbonate preparation. For all stable isotope measurements, a working standard was used, which has been calibrated against VPDB (Vienna Pee Dee Belemnite) by using the NBS 19 standard. The long‐term analytical standard deviation is about ±0.07‰ (Isotope Laboratory at Faculty of Geosciences, University of Bremen). For Mg/Ca samples were cleaned by applying a slight modification of the method originally proposed by Barker et al. (2003). Mg/Ca measurements were performed at MARUM, University of Bremen, using a Perkin ElmerOptima 3300Rinductively coupled plasma optical emission spectrophotometer (ICP-OES) equipped with an autosampler and a U-5000 AT ultrasonic nebulizer (Cetac Technologies). Mg/Ca ratios were converted to temperature following the multispecies Mg/Ca-temperature calibration of Anand et al. (2003; doi:10.1029/2002PA000846). To calculate the δ18O of seawater, the δ18O:temperature equation of Bemis et al. (1998; https://doi.org/10.1029/98PA00070) was used. The values were then converted to standard mean ocean water (SMOW) by adding 0.27%and corrected for sea-level changes following Waelbroeck et al. (2002; https://doi.org/10.1016/S0277-3791(01)00101-9).
DOI: 10.1594/pangaea.926039
title: δ¹⁸O and average temperatures in Late Pleistocene and present-day syngenetic ice wedges of Kular and surrounding yedpomas of Northern Yakutia (Russia)

description: The δ¹⁸O values in Late Pleistocene and present-days syngenetic ice wedges of Kular and surrounding yedpomas of Northern Yakutia and present day and reconstructed temperatures.
description: January average paleotemperatures were reconstructed by the oxygen isotope composition of the ice wedge (δ¹⁸OIW) following Vasil'chuk, 2016, with additions. January average air temperatures were calculated using the formula from Vasil'chuk, 1991. Stable isotope analyses were made at the isotope laboratory of the Geographical Department of Lomonosov Moscow State University on a Finnigan Delta-V mass spectrometer with the standard gas-bench option (Prof. Yu. Vasil'chuk and Dr. N.Budantseva) and at the Tallinn Institute of Geology.
DOI: 10.1594/pangaea.972753
title: University of Maryland classified LVIS georeferenced imagery of Arctic summer sea ice, version 1

description: This data collection encompasses 1,387 classified LVIS georeferenced images, which include four classes: Ice, Melt Pond, Open Water, and Shadow. The original LVIS images were acquired in July 2022 using a PhaseOne medium-format camera during the ICESat-2 2022 Arctic Summer calibration campaign, with spatial resolution ranging between 0.39 m and 0.5 m. An image screening was conducted prior to the image classification to remove cloudy images from the collection. The image classification was based on the Random Forest algorithm. An accuracy assessment using 20 randomly selected classified images indicated that the classified imagery has an overall accuracy of more than 85%. The classified images can be used for tracking sea ice dynamics over time and for providing reference for the interpretation of altimetry data.
DOI: 10.1594/pangaea.915111
title: δ¹⁸O in ice wedges of northern Chukotka and paleotemperature during the Late Pleistocene

description: The values of δ18О in the ice wedges of northern Chukotka and paleotemperature characteristics during the Late Pleistocene and Holocene. Winter mean (twint.mean) and January (tJ) air temperature values were calculated using equation: tJ = 1.5 δ18Opiw (±3 °C), twint.mean = δ18Opiw (±2 °C) by the technique of Yu. Vasil'chuk (1989, 1991). Mean annual ground temperatures were calculated using reconstructions of mean summer temperature by the technique of A. Vasil'chuk [2007] and of mean winter temperature by the technique of Yu. Vasil'chuk (1989). Isotopic analyses were performed at the Institute of Water Problems, RAS and at the Institute of Geology, the city of Tallinn. Oxygen isotope measurements of ice wedge were carried out in the isotope laboratory of the Institute of Geology of Estonia (Prof. R. Vaikmae) using a Finnigan Delta-E mass spectrometer. Analytical precision was ±0.4‰ and in the isotope laboratory of the Institute of Water Problems RAS (Dr. A.Yesikov) using a Finnigan MAT 250 mass spectrometer. Analytical precision was ±0.6‰.
DOI: 10.1594/pangaea.921091
title: Benthic and planktic foraminiferal carbon and oxygen isotopes and Mg/Ca-derived mixed layer temperatures from IODP Hole 353-U1448A and 353-U1448B in the Andaman Sea

description: We reconstructed the Indian Monsoon variability of the Earth's strongest hydrological system, at International Ocean Discovery Program (IODP) Expedition 353 Site U1448 in the Andaman Sea over the interval 6.24 to 4.91 Ma. We used high-resolution benthic and planktic foraminiferal carbon and oxygen isotopes and Mg/Ca measurements of the mixed layer foraminifer Trilobatus sacculifer to reconstruct the isotopic composition of seawater (δ¹⁸Osw) and the gradient between planktic and benthic foraminiferal δ¹³C.
DOI: 10.1594/pangaea.921072
title: Water vapour isotopes analyser calibrated data from Samoylov station, 2016-09
DOI: 10.1594/pangaea.917840
title: Age model tie points of sediment core CDH-79
DOI: 10.1594/pangaea.921074
title: Water vapour isotopes analyser calibrated data from Samoylov station, 2016-11
DOI: 10.1594/pangaea.921068
title: Water vapour isotopes analyser calibrated data from Samoylov station, 2016-05
DOI: 10.1594/pangaea.957206
title: Stable isotopes in water in the Fram Strait from POLARSTERN cruises PS92 and PS93/1 in 2015

description: Measurements of stable water isotopes (δ Deuterium, δ18O, δ13C) from the water column in the Fram Strait from the POLARSTERN cruises PS92 (ARK-XXIX/1, TRANSSIZ) and PS93.1 (ARK-XXIX/2.1) in May to July 2015. δ Deuterium and δ18O were measured with a Picarro 2130i CRDS System, δ13C with a Finnigan MAT 252 gas isotope ratio mass spectrometer with Gasbench 2 at MARUM - Center for Marine Environmental Sciences. The measurements were conducted in 2020/2021.
description: δ Deuterium and δ18O measurements were conducted measuring 9 injections of 9 µL each. The given result is the average of the last three injections. The nominal machine standard deviation is 0.03 for ∂18O and 0.3 for ∂D, yet this is for freshwater samples, so the actual standard deviation is higher owing to salinity. CH4 concentrations might disturb the isotope signal. 123 of the 297 water samples used for δ Deuterium and δ18O measurements were filtered before the measurement, which is indicated in a separate column in the data. Filtration was done with Sartorius microsart filter.The standard deviation of the house standard (Solnhofen limestone) over measurements of δ13C was 0.04 ‰.
DOI: 10.1594/pangaea.921070
title: Water vapour isotopes analyser calibrated data from Samoylov station, 2016-07
DOI: 10.1594/pangaea.939047
title: Continuous surface water vapour isotope monitoring at Neumayer Station III (201702-201901)

description: This dataset presents the first fully continuous monitoring of water vapour isotopic composition at Neumayer Station III, Antarctica, for two years, from February 2017 to January 2019. In January 2017, a PICARRO L2140-i cavity ring-down spectroscopy analyser was installed in a laboratory room at Neumayer Station. The Picarro analyser runs continuously and measures the injected water vapour content and its isotopic composition approximately every two seconds. For our analyses, the data are reported as hourly mean values.
DOI: 10.1594/pangaea.921073
title: Water vapour isotopes analyser calibrated data from Samoylov station, 2016-10
DOI: 10.1594/pangaea.921061
title: Water vapour isotopes analyser calibrated data from Samoylov station, 2015-10
DOI: 10.1594/pangaea.951447
title: Continuous near-surface atmospheric water vapour isotopic composition from Polarstern cruise PS122-3 (MOSAiC)

description: We present the isotopic dataset of near-surface water vapour, continuously surveyed from the Polarstern research vessel during the Leg 3 of the Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC). The isotopic measurements were acquired continuously by a Cavity Ring-Down Spectrometer (CRDS) installed onboard the RV Polarstern; the ambient inlet was located at 29m asl. A custom-designed calibration module, including four water standards, was operated in parallel to the CRDS. The data is quality controlled and the measurements are calibrated against humidity dependency and deviation from the VSMOW standard values. Knowingly affected or erroneous data were removed.
description: Corresponding authors: Camilla F. Brunello (camilla.brunello@awi.de), Martin Werner (martin.werner@awi.de)
DOI: 10.1594/pangaea.951424
title: Continuous near-surface atmospheric water vapour isotopic composition from Polarstern cruise PS122-1 (MOSAiC)

description: We present the isotopic dataset of near-surface water vapour, continuously surveyed from the Polarstern research vessel during the Leg 1 of the Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC). The isotopic measurements were acquired continuously by a Cavity Ring-Down Spectrometer (CRDS) installed onboard the RV Polarstern; the ambient inlet was located at 29m asl. A custom-designed calibration module, including four water standards, was operated in parallel to the CRDS. The data is quality controlled and the measurements are calibrated against humidity dependency and deviation from the VSMOW standard values. Knowingly affected or erroneous data were removed.
description: Corresponding authors: Camilla F. Brunello (camilla.brunello@awi.de), Martin Werner (martin.werner@awi.de)
DOI: 10.1594/pangaea.951446
title: Continuous near-surface atmospheric water vapour isotopic composition from Polarstern cruise PS122-2 (MOSAiC)

description: We present the isotopic dataset of near-surface water vapour, continuously surveyed from the Polarstern research vessel during the Leg 2 of the Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC). The isotopic measurements were acquired continuously by a Cavity Ring-Down Spectrometer (CRDS) installed onboard the RV Polarstern; the ambient inlet was located at 29m asl. A custom-designed calibration module, including four water standards, was operated in parallel to the CRDS. The data is quality controlled and the measurements are calibrated against humidity dependency and deviation from the VSMOW standard values. Knowingly affected or erroneous data were removed.
description: Corresponding authors: Camilla F. Brunello (camilla.brunello@awi.de), Martin Werner (martin.werner@awi.de)
DOI: 10.1594/pangaea.921062
title: Water vapour isotopes analyser calibrated data from Samoylov station, 2015-11
DOI: 10.1594/pangaea.961145
title: Microcharcoal concentration of surface ocean sediments offshore Africa

description: Further fundings:* CAMPFIRE* Climate Change Initiative (CCI) Fire_cci Project, Award: 4000126706/19/I-NB
DOI: 10.1594/pangaea.981157
title: Biogeochemical properties of water samples collected from Kevo, Utsjoki region in Finland during June 2023

description: This table contains biogeochemical properties collected from small ponds, headwaters and river in June 2023. Measurements include nutrient concentrations, dissolved organic carbon concentrations, optical propertied of dissolved organic matter, bacterial numbers and in-situ measurements.
DOI: 10.1594/pangaea.981158
title: Peatland and palsa soil properties from Kevo, Utsjoki region in Finland during June 2023

description: This table consists of soil properties, pH, C:N ratio and soil organic matter content (%) from three depths of soil. Soil samples were collected from shallow peatland and palsa soil. Palsa soil samples were collected from active layer, transitional layer and permafrost layer.
DOI: 10.1594/pangaea.981159
title: Degradation experiment on water samples collected from Kevo, Utsjoki region in Finland during June 2023

description: This table contains measurements collected during a biodegradation experiment that was initiated immediately after collecting the samples and terminated approximately 6 months later. Some samples were filtered through a 0.8 µm membrane filter, as shown by the filter pore size parameter, to remove grazers. The experiment was conducted in the dark at 10 °C. Samples were stored in 500 mL glass bottles that were stirred regularly, except dissolved oxygen samples for respiration measurements, which were stored in separate glass stopper vials. The date time recordings within each event show the initial measurement and subsequent measurements of that sample. Other data represent direct measurements at the given time, but respiration shows the daily oxygen consumption between the initial measurement at the start of the experiment and the next measurement after approximately two weeks.
DOI: 10.1594/pangaea.921059
title: Water vapour isotopes analyser calibrated data from Samoylov station, 2015-08
DOI: 10.1594/pangaea.921060
title: Water vapour isotopes analyser calibrated data from Samoylov station, 2015-09
DOI: 10.1594/pangaea.921078
title: Water vapour isotopes analyser calibrated data from Samoylov station, 2017-03
DOI: 10.1594/pangaea.921063
title: Water vapour isotopes analyser calibrated data from Samoylov station, 2015-12
DOI: 10.1594/pangaea.921076
title: Water vapour isotopes analyser calibrated data from Samoylov station, 2017-01
DOI: 10.1594/pangaea.905180
title: Age model determination of piston core M125-95-3
DOI: 10.1594/pangaea.944158
title: Mean January air temperature in the northwest of Yakutia for the period between 47 and 12 cal ka BP reconstructed based on oxygen isotope composition of ice wedges (δ18OIW)

description: Isotopic analysis of ice wedges has been performed in the laboratory of the Water Problems Institute of the Russian Academy of Sciences (senior researcher A.D. Esikov) on a Varian Mat 250 mass spectrometer, sample preparation was carried out by the authors within a month after sampling.
DOI: 10.1594/pangaea.925573
title: Stem water δ18O measured during 1998-2015 at Spasskaya Pad in northeastern Siberia
DOI: 10.1594/pangaea.951449
title: Continuous near-surface atmospheric water vapour isotopic composition from Polarstern cruise PS122-5 (MOSAiC)

description: We present the isotopic dataset of near-surface water vapour, continuously surveyed from the Polarstern research vessel during the Leg 5 of the Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC). The isotopic measurements were acquired continuously by a Cavity Ring-Down Spectrometer (CRDS) installed onboard the RV Polarstern; the ambient inlet was located at 29m asl. A custom-designed calibration module, including four water standards, was operated in parallel to the CRDS. The data is quality controlled and the measurements are calibrated against humidity dependency and deviation from the VSMOW standard values. Knowingly affected or erroneous data were removed.
description: Corresponding authors: Camilla F. Brunello (camilla.brunello@awi.de), Martin Werner (martin.werner@awi.de)
DOI: 10.1594/pangaea.739969
title: Pollen profile WUNT, Wachseldorn Untermoos, Switzerland

description: The EPD (http://www.europeanpollendatabase.net) accepted species name is given in the parameter comment. This dataset was archived on 2010-05-11 from the EPD database.
DOI: 10.1594/pangaea.909986
title: Autumn/winter precipitation reconstruction based on trace element record of stalagmite C09-2 from Closani Cave
DOI: 10.1594/pangaea.925572
title: Soil water δ18O measured during 1998-2015 at Spasskaya Pad in northeastern Siberia
DOI: 10.1594/pangaea.925568
title: Mean monthly air temperatures during 1979-2016 at Spasskaya Pad in northeastern Siberia
DOI: 10.1594/pangaea.925569
title: Monthly precipitation during 1979-2016 at Spasskaya Pad in northeastern Siberia
DOI: 10.1594/pangaea.910308
title: (Table 9) Stable oxygen isotope derived SST of surface sediments
DOI: 10.1594/pangaea.925574
title: Soil water content measured during 1998-2015 at Spasskaya Pad in northeastern Siberia
DOI: 10.1594/pangaea.925575
title: δ18O of tree ring cellulose during 1981-2016 at Spasskaya Pad in northeastern Siberia
DOI: 10.1594/pangaea.951448
title: Continuous near-surface atmospheric water vapour isotopic composition from Polarstern cruise PS122-4 (MOSAiC)

description: We present the isotopic dataset of near-surface water vapour, continuously surveyed from the Polarstern research vessel during the Leg 4 of the Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC). The isotopic measurements were acquired continuously by a Cavity Ring-Down Spectrometer (CRDS) installed onboard the RV Polarstern; the ambient inlet was located at 29m asl. A custom-designed calibration module, including four water standards, was operated in parallel to the CRDS. The data is quality controlled and the measurements are calibrated against humidity dependency and deviation from the VSMOW standard values. Knowingly affected or erroneous data were removed.
description: Corresponding authors: Camilla F. Brunello (camilla.brunello@awi.de), Martin Werner (martin.werner@awi.de)
DOI: 10.1594/pangaea.925571
title: Monthly humidity during 2000-2015 at Spasskaya Pad in northeastern Siberia
DOI: 10.1594/pangaea.921079
title: Water vapour isotopes analyser calibrated data from Samoylov station, 2017-04
DOI: 10.1594/pangaea.925576
title: Leaf water δ18O and leaf temperature monitoring during 2014-07-24 to 2014-07-26 at Spasskaya Pad in northeastern Siberia