cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.952794
title: MicroCT density and specific surface area snowpit profiles during the MOSAiC expedition

description: Cylindrical snow and ice samples of radii 44 mm, 68 mm, 88 mm and a maximum height of 110 mm were taken from the field using a cylindrical drill and transported to the ship in an insulated container. We scanned the samples within 24 hours using a desktop cone-beam microCT90 set-up in a -15 degreeC cold laboratory. A global threshold of 0.21 was used throughout the analysis. This dataset provides complete analysis output, which includes profiles of density, specific surface area (SSA), anisotropy, event date, y position in the sample (where 0 mm represents the bottom of the sample), y position in the snowpit (where 0 mm represents the sea-ice surface) and relative_depth (where 1 represents the top of the snowpack and 0 represents the sea ice interface) listed in the final columns of the excel files.
description: The AIM files for this dataset are available on request (schneebeli@slf.ch), the ISQ files can be downloaded from the MCS portal (https://mosaic-portal.org/data/open-mcs/vessel/polarstern/sn_microct/sn_microct/).
DOI: 10.1594/pangaea.738163
title: Basic and other measurements of radiation at station Syowa (2006-05)
DOI: 10.1594/pangaea.815385
title: Basic and other measurements of radiation at station Syowa (2011-11)

description: Version 2, 2013-06-10
DOI: 10.1594/pangaea.933450
title: Basic and other measurements of radiation at station Syowa (2021-04), Version 1
DOI: 10.1594/pangaea.672891
title: Basic measurements of radiation at station Syowa (1994-04)
DOI: 10.1594/pangaea.823336
title: Basic and other measurements of radiation at station Syowa (2012-05)
DOI: 10.1594/pangaea.940215
title: Snowpit height measurements during the MOSAiC expedition

description: We used a regular foldable wooden ruler to measure the height of the snow and the SSL. The ruler was also used for height readings for all other measurements. 0 cm is the snow-ice interface. If multiple snow height measurements were taken for one snowpit event, details can be found in the comments section, which give a range of the depth values within the 1 m wide snowpit.Please direct inquiries to; David Wagner (PS122/1), Martin Schneebeli (PS122/2), Amy Macfarlane (PS122/3 and PS122/4), Ruzica Dadic (PS122/5).
DOI: 10.1594/pangaea.672997
title: Basic and other measurements of radiation at station Syowa (2003-02)
DOI: 10.1594/pangaea.940214
title: Snowpit snow density cutter profiles measured during the MOSAiC expedition

description: A density cutter of fixed volume (100 cm3) and known weight was used to measure the density profile of snow/SSL in 3 cm intervals. The height of the sampled volume was recorded with a ruler. 0 cm is the snow-ice interface. The combined weight of the density cutter and the snow inside it was measured with digital scales. The resulting density is the weight of snow/volume. The snow from the density cutter was collected in plastic containers and used for subsequent salinity and stable water isotope measurements. Please direct inquiries to; David Wagner (PS122/1), Martin Schneebeli (PS122/2), Amy Macfarlane (PS122/3 and PS122/4), Ruzica Dadic (PS122/5).
DOI: 10.1594/pangaea.672922
title: Basic measurements of radiation at station Syowa (1996-11)
DOI: 10.1594/pangaea.672921
title: Basic measurements of radiation at station Syowa (1996-10)
DOI: 10.1594/pangaea.672960
title: Basic and other measurements of radiation at station Syowa (2000-01)
DOI: 10.1594/pangaea.672984
title: Basic and other measurements of radiation at station Syowa (2002-01)
DOI: 10.1594/pangaea.672950
title: Basic and other measurements of radiation at station Syowa (1999-03)
DOI: 10.1594/pangaea.672895
title: Basic measurements of radiation at station Syowa (1994-08)
DOI: 10.1594/pangaea.673001
title: Basic and other measurements of radiation at station Syowa (2003-06)
DOI: 10.1594/pangaea.740929
title: Basic and other measurements of radiation at station Syowa (2007-03)
DOI: 10.1594/pangaea.738157
title: Basic and other measurements of radiation at station Syowa (2006-03)
DOI: 10.1594/pangaea.740987
title: Basic and other measurements of radiation at station Syowa (2008-06)
DOI: 10.1594/pangaea.740993
title: Basic and other measurements of radiation at station Syowa (2008-08)
DOI: 10.1594/pangaea.672965
title: Basic and other measurements of radiation at station Syowa (2000-06)
DOI: 10.1594/pangaea.740956
title: Basic and other measurements of radiation at station Syowa (2007-12)
DOI: 10.1594/pangaea.741881
title: Basic and other measurements of radiation at station Syowa (2009-03)
DOI: 10.1594/pangaea.672993
title: Basic and other measurements of radiation at station Syowa (2002-10)
DOI: 10.1594/pangaea.673003
title: Basic and other measurements of radiation at station Syowa (2003-08)
DOI: 10.1594/pangaea.672911
title: Basic measurements of radiation at station Syowa (1995-12)
DOI: 10.1594/pangaea.672989
title: Basic and other measurements of radiation at station Syowa (2002-06)
DOI: 10.1594/pangaea.672985
title: Basic and other measurements of radiation at station Syowa (2002-02)
DOI: 10.1594/pangaea.672975
title: Basic and other measurements of radiation at station Syowa (2001-04)
DOI: 10.1594/pangaea.829591
title: Basic and other measurements of radiation at station Syowa (2012-07)
DOI: 10.1594/pangaea.672896
title: Basic measurements of radiation at station Syowa (1994-09)
DOI: 10.1594/pangaea.702555
title: Basic and other measurements of radiation at station Syowa (2005-12)
DOI: 10.1594/pangaea.763116
title: Basic and other measurements of radiation at station Syowa (2010-12)
DOI: 10.1594/pangaea.673000
title: Basic and other measurements of radiation at station Syowa (2003-05)
DOI: 10.1594/pangaea.879626
title: Basic and other measurements of radiation at station Syowa (2015-04)
DOI: 10.1594/pangaea.672982
title: Basic and other measurements of radiation at station Syowa (2001-11)
DOI: 10.1594/pangaea.892053
title: Basic and other measurements of radiation at station Syowa (2016-04)
DOI: 10.1594/pangaea.815376
title: Basic and other measurements of radiation at station Syowa (2011-08)

description: Version 2, 2013-06-10
DOI: 10.1594/pangaea.853608
title: Threatened Caribbean coral is able to mitigate the adverse effects of ocean acidification on calcification by increasing feeding rate

description: Global climate change threatens coral growth and reef ecosystem health via ocean warming and ocean acidification (OA). Whereas the negative impacts of these stressors are increasingly well-documented, studies identifying pathways to resilience are still poorly understood. Heterotrophy has been shown to help corals experiencing decreases in growth due to either thermal or OA stress; however, the mechanism by which it mitigates these decreases remains unclear. This study tested the ability of coral heterotrophy to mitigate reductions in growth due to climate change stress in the critically endangered Caribbean coral Acropora cervicornis via changes in feeding rate and lipid content. Corals were either fed or unfed and exposed to elevated temperature (30°C), enriched pCO2 (800 ppm), or both (30°C/800 ppm) as compared to a control (26°C/390 ppm) for 8 weeks. Feeding rate and lipid content both increased in corals experiencing OA vs. present-day conditions, and were significantly correlated. Fed corals were able to maintain ambient growth rates at both elevated temperature and elevated CO2, while unfed corals experienced significant decreases in growth with respect to fed conspecifics. Our results show for the first time that a threatened coral species can buffer OA-reduced calcification by increasing feeding rates and lipid content.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2015) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2015-09-30.
description: Supplement to: Towle, Erica K; Enochs, Ian C; Langdon, Chris (2015): Threatened Caribbean coral is able to mitigate the adverse effects of ocean acidification on calcification by increasing feeding rate. PLoS ONE, 10(4), e0123394
DOI: 10.1594/pangaea.672946
title: Basic and other measurements of radiation at station Syowa (1998-11)
DOI: 10.1594/pangaea.940129
title: Snowpit near-infrared (NIR) images collected during the MOSAiC expedition

description: A NIR camera allows a measurement of the reflectance of the snow profile wall to identify layers of snow grains with different specific surface area (SSA) with a spatial resolution of about 1 mm. The processing of the images of RGB-cameras must consider the sensitivity of the different color pixels. The setup of the reference targets, the flat surface and the diffuse illumination is important to get high-quality images. A geometrically corrected NIR-photo gives an objective measure of the snow stratigraphy and is observer independent. This efficient measurement has been adapted for use in polar night and day by blocking out external sunlight and packaging the camera and the illuminating infrared lights into a wooden box. The width and height of the inside of the box was 500 x 675 mm. A blanket was used to prevent any light seeping through. Inside the box, lambertian reflectance targets were mounted to account for any irregular light conditions. For MOSAiC, we used lights with two different wavelengths, 850 nm and 940 nm. We used the NIR camera in excavated snowpit walls to record the vertical and horizontal spatial variability of the SSA and snow stratigraphy. If the snowpit was higher than the NIR box, then measurement was repeated for different heights, using a ruler as a reference. NIR was also used to take images of the surface to account for small-scale spatial variability of the SSA of the snow/SSL surface. For each set of images, a dark image (without any lamps, recorded in this dataset as 0 nm) was taken, followed by images with each of the two lamps (using external light switches), to account for potential light leaks. The MAPIR camera (Survey3N Camera - Near Infrared (NIR) - MAPIR CAMERA) was built into the box and triggered by an external button. Please direct inquiries to; David Wagner (PS122/1), Martin Schneebeli (PS122/2), Amy Macfarlane (PS122/3 and PS122/4), Ruzica Dadic (PS122/5).
DOI: 10.1594/pangaea.859475
title: Basic and other measurements of radiation at station Syowa (2014-08)
DOI: 10.1594/pangaea.672986
title: Basic and other measurements of radiation at station Syowa (2002-03)
DOI: 10.1594/pangaea.763098
title: Basic and other measurements of radiation at station Syowa (2010-06)
DOI: 10.1594/pangaea.672959
title: Basic and other measurements of radiation at station Syowa (1999-12)
DOI: 10.1594/pangaea.672942
title: Basic and other measurements of radiation at station Syowa (1998-07)
DOI: 10.1594/pangaea.954849
title: Upwelling and downwelling visible radiation measurements of the autonomous ice-tethered OptiCAL 'gg' buoy deployed during MOSAiC in the Monster Bay area

description: Three ice-tethered / floating systems measuring sub - sea-ice Photosynthetic Active Radiation (PAR) were deployed within the MOSAiC ice camp from February 2020, and recorded hourly data through to later summer 2020. These Optical Chain And Logger (OptiCAL) systems capture PAR-like data at 12 logarithmically-spaced levels down to 50 m depth, and, along with positional data, transmit these data hourly via Iridium. The PAR sensors have a wide dynamic range, able to detect PAR from 5x10⁻⁵ µMol s⁻¹ m⁻² to 100 µMol s⁻¹ m⁻² and thereby graph a wide range of light behaviour from winter to summer and from surface to depth. Sampling at the 12 levels is accomplished by resin-containment 'nodes' located along a power and communication cable that hangs vertically from the underside of the surface spar-buoy. The nodes are at nominal depths of 1, 2, 3, 4, 5, 6, 7, 9, 14, 21, 32, and 50m. Each node has six 'PAR' sensors, three detecting downwelling light and three upwelling light. Two of each set of three sensor sets have simple optical filters: one transmitting 'orange' the other 'blue'. The third sensor, being unfiltered, is 'white'. PAR data are archived in CSV files as 'counts' from the sensors, and are in units of millihertz (mHz). The detail of the CSV format is provided in this directory (see "OptiCAL 'gg' buoy: Detail of the CSV format" under Documentation), but to convert from mHz to the expected SI unit of µMol s⁻¹ m⁻² requires a conversion function. Details of this conversion are provided in this directory (see "OptiCAL 'gg' buoy: Data description" under Documentation). The 'gg' unit was deployed in the "Monster Bay" area some 20-m away from the upward looking AZFP on level ice surrounded by SYI old ridges of the main floe. Access via the road to the Dark site with a junction to the buoy area right before the crossing of Allis ridge. Its drift started at N 88.029858, E 80.206014 on 14th Feb 2020 and last data transmission was on 12th August at 05:44 UTC due to battery power being exhausted. Intended recovery was not possible before positional data were lost.This instrument was deployed as part of the project Ridges - Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic OCean (HAVOC), funded by the Research Council of Norway, project number: 280292 and Arctic Ocean ecosystems - Applied technology, Biological interactions and Consequences in an era of abrupt climate change (Arctic ABC Development, Research Council of Norway, project number: 245923). Ship-time associated to the participation of the DEARice team (D. Divine on leg 2) on the MOSAiC Expedition has been supported by the European Union's Horizon 2020 research and innovation programme under grant agreement No 730965 (ARICE).
DOI: 10.1594/pangaea.695789
title: Basic and other measurements of radiation at station Syowa (2004-10)
DOI: 10.1594/pangaea.753594
title: Basic and other measurements of radiation at station Syowa (2009-05)
DOI: 10.1594/pangaea.829600
title: Basic and other measurements of radiation at station Syowa (2012-10)
DOI: 10.1594/pangaea.892065
title: Basic and other measurements of radiation at station Syowa (2016-08)
DOI: 10.1594/pangaea.672928
title: Basic measurements of radiation at station Syowa (1997-05)
DOI: 10.1594/pangaea.672937
title: Basic measurements of radiation at station Syowa (1998-02)
DOI: 10.1594/pangaea.937801
title: Basic and other measurements of radiation at station Syowa (2021-06), Version 1
DOI: 10.1594/pangaea.953754
title: Seawater carbonate chemistry and the bioerosion rates of two reef-dwelling Caribbean sponges

description: Ocean acidification (OA) is expected to modify the structure and function of coral reef ecosystems by reducing calcification, increasing bioerosion, and altering the physiology of many marine organisms. Much of our understanding of these relationships is based upon experiments with static OA treatments, though evidence suggests that the magnitude of diurnal fluctuations in carbonate chemistry may modulate the calcification response to OA. These light-mediated swings in seawater pH are projected to become more extreme with OA, yet their impact on bioerosion remains unknown. We evaluated the influence of diurnal carbonate chemistry variability on the bioerosion rates of two Caribbean sponges: the zooxanthellate Cliona varians and azooxanthellate Cliothosa delitrix. Replicate fragments from multiple colonies of each species were exposed to four precisely-controlled pH treatments: contemporary static (8.05 ± 0.00; mean pH ± diurnal pH oscillation), contemporary variable (8.05 ± 0.10), future OA static (7.80 ± 0.00), and future OA variable (7.80 ± 0.10). Significantly enhanced bioerosion rates, determined using buoyant weight measurements, were observed under more variable conditions in both the contemporary and future OA scenarios for C. varians, whereas the same effect was only apparent under contemporary pH conditions for C. delitrix. These results indicate that variable carbonate chemistry has a stimulating influence on sponge bioerosion, and we hypothesize that bioerosion rates evolve non-linearly as a function of pCO2 resulting in different magnitudes and directions of rate enhancement/reduction between day and night, even with an equal fluctuation around the mean. This response appeared to be intensified by photosymbionts, evident by the consistently higher percent increase in bioerosion rates for photosynthetic C. varians across all treatments. These findings further suggest that more variable natural ecosystems may presently experience elevated sponge bioerosion rates and that the heightened impact of OA enhanced bioerosion on reef habitat could occur sooner than prior predictions.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2023-01-06.
DOI: 10.1594/pangaea.937805
title: Basic and other measurements of radiation at station Syowa (2021-05), Version 1
DOI: 10.1594/pangaea.938590
title: Basic and other measurements of radiation at station Syowa (2017-03)

description: Version 3, 2021-11-24, with some erroneous values removed/corrected.
DOI: 10.1594/pangaea.938588
title: Basic and other measurements of radiation at station Syowa (2017-01)

description: Version 2, 2021-11-24, with some erroneous values removed/corrected.
DOI: 10.1594/pangaea.938589
title: Basic and other measurements of radiation at station Syowa (2017-02)

description: Version 2, 2021-11-24, with some erroneous values removed/corrected.
DOI: 10.1594/pangaea.938592
title: Basic and other measurements of radiation at station Syowa (2017-05)

description: Version 2, 2021-11-24, with some erroneous values removed/corrected.
DOI: 10.1594/pangaea.938640
title: Basic and other measurements of radiation at station Syowa (2019-01)

description: Version 2, 2021-11-24 with some erroneous data removed/corrected.
DOI: 10.1594/pangaea.938593
title: Basic and other measurements of radiation at station Syowa (2017-06)
DOI: 10.1594/pangaea.938594
title: Basic and other measurements of radiation at station Syowa (2017-07)

description: Version 3, 2021-11-24, with some erroneous values removed/corrected.
DOI: 10.1594/pangaea.938595
title: Basic and other measurements of radiation at station Syowa (2017-08)

description: Version 2, 2021-11-24, with some erroneous values removed/corrected.
DOI: 10.1594/pangaea.938596
title: Basic and other measurements of radiation at station Syowa (2017-10)

description: Version 2, 2021-11-24, with some erroneous values removed/corrected.
DOI: 10.1594/pangaea.673005
title: Basic and other measurements of radiation at station Syowa (2003-10)
DOI: 10.1594/pangaea.673004
title: Basic and other measurements of radiation at station Syowa (2003-09)
DOI: 10.1594/pangaea.672893
title: Basic measurements of radiation at station Syowa (1994-06)
DOI: 10.1594/pangaea.829594
title: Basic and other measurements of radiation at station Syowa (2012-08)
DOI: 10.15468/dl.n8p3df
title: Occurrence Download

description: A dataset containing 11 species occurrences available in GBIF matching the query:
{
 "and" : [
 "DatasetKey is Royal Botanic Gardens, Kew - Herbarium Specimens",
 "TaxonKey is Melicope dubia (Merr.) T.G.Hartley"
 ]
}

 The dataset includes 11 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0043051-241126133413365/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.672968
title: Basic and other measurements of radiation at station Syowa (2000-09)
DOI: 10.1594/pangaea.672892
title: Basic measurements of radiation at station Syowa (1994-05)
DOI: 10.1594/pangaea.672994
title: Basic and other measurements of radiation at station Syowa (2002-11)
DOI: 10.1594/pangaea.815388
title: Basic and other measurements of radiation at station Syowa (2011-12)
DOI: 10.1594/pangaea.835408
title: Basic and other measurements of radiation at station Syowa (2013-03)
DOI: 10.1594/pangaea.829603
title: Basic and other measurements of radiation at station Syowa (2012-11)
DOI: 10.1594/pangaea.815391
title: Basic and other measurements of radiation at station Syowa (2012-01)
DOI: 10.1594/pangaea.927820
title: Basic and other measurements of radiation at station Syowa (2020-09)
DOI: 10.1594/pangaea.965288
title: Basic and other measurements of radiation at station Syowa (2023-12)
DOI: 10.1594/pangaea.965289
title: Basic and other measurements of radiation at station Syowa (2023-11)
DOI: 10.1594/pangaea.965287
title: Basic and other measurements of radiation at station Syowa (2021-05)

description: Version 2, 2024-02-01, with some diffuse solar radiation data deleted (malfunction in the shielding device attached to the sun tracker).
DOI: 10.1594/pangaea.965290
title: Basic and other measurements of radiation at station Syowa (2021-03)

description: Version 2, 2024-02-01, with some diffuse solar radiation data deleted (malfunction in the shielding device attached to the sun tracker).
DOI: 10.1594/pangaea.965303
title: Basic and other measurements of radiation at station Syowa (2022-09)

description: Diffuse solar radiation for some period was deleted, as there was a problem with the installation of pyranometer.
DOI: 10.1594/pangaea.672991
title: Basic and other measurements of radiation at station Syowa (2002-08)
DOI: 10.1594/pangaea.672889
title: Basic measurements of radiation at station Syowa (1994-02)
DOI: 10.1594/pangaea.672939
title: Basic and other measurements of radiation at station Syowa (1998-04)
DOI: 10.1594/pangaea.672964
title: Basic and other measurements of radiation at station Syowa (2000-05)
DOI: 10.1594/pangaea.672951
title: Basic and other measurements of radiation at station Syowa (1999-04)
DOI: 10.1594/pangaea.965285
title: Basic and other measurements of radiation at station Syowa (2021-04)

description: Version 2, 2024-02-01, with some diffuse solar radiation data deleted (malfunction in the shielding device attached to the sun tracker).
DOI: 10.1594/pangaea.738154
title: Basic and other measurements of radiation at station Syowa (2006-02)
DOI: 10.1594/pangaea.938598
title: Basic and other measurements of radiation at station Syowa (2017-12)

description: Version 2, 2021-11-24, with some erroneous values removed/corrected.
DOI: 10.1594/pangaea.938609
title: Basic and other measurements of radiation at station Syowa (2018-01)

description: Version 2, 2021-11-24, with some erroneous values removed/corrected.
DOI: 10.15468/dl.dph9sv
title: Occurrence Download

description: A dataset containing 119967 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Month is one of (March, April, May, June, July, August, September, October, November, December)",
 "OccurrenceStatus is Present",
 "TaxonKey is Larus delawarensis Ord, 1815",
 "Year 2010-2010"
 ]
}

 The dataset includes 119967 records from 21 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0043042-241126133413365/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.815379
title: Basic and other measurements of radiation at station Syowa (2011-09)

description: Version 2, 2013-06-10
DOI: 10.1594/pangaea.672900
title: Basic measurements of radiation at station Syowa (1995-01)
DOI: 10.1594/pangaea.672980
title: Basic and other measurements of radiation at station Syowa (2001-09)
DOI: 10.1594/pangaea.740935
title: Basic and other measurements of radiation at station Syowa (2007-05)
DOI: 10.1594/pangaea.763095
title: Basic and other measurements of radiation at station Syowa (2010-05)