cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25829/sfh0-ga09
title: Leaf water potential traits in the MyDiv experiment during the drought year 2022

description: Climate change is predicted to increase the frequency and duration of drought events, threatening the functioning of Central European forests. To study how individual tree growth during the drought event of 2018-2020 was dependend on the hydro-functional strategy of the tree species and if the tree growth reductions during drought could be buffered by the hydro-functional dissimilarity of the focal tree to its neighbouring trees, we created this dataset among others.
This dataset contains leaf water potential measurements taken at pre-dawn and midday in 2022 across tree species in the MyDiv Experiment. From this data we can extract species traits like minimum water potential (midday water potential during drought) and delta water potential (difference between predawn and midday), to get a hint to the degree of isohydry of the tree species.
 
These data represent a subset of leaf-level hydro-functional traits used to assess species-specific water-use strategies and drought responses of temperate forest tree species.
DOI: 10.7929/issda/snydnd
title: Quarterly National Household Survey (QNHS) Module on Life Long Learning, Q2 2003

description: The Quarterly National Household Survey (QNHS) began in September 1997 and ran until Q2 2017 when it was replaced by the Labour Force Survey (LFS). While the main purpose of the QNHS was the production of quarterly labour force estimates, the QHNS also conducted special modules on different social topics each quarter. This special module was on lifelong learning. Please note that due to CSO restrictions, these files cannot be matched to their associated microdata files
DOI: 10.5281/zenodo.17632811
title: A new method to reconstructing burned area during the Holocene in North America
DOI: 10.5281/zenodo.17632810
title: A new method to reconstructing burned area during the Holocene in North America
DOI: 10.15468/dl.pajkkz
title: Occurrence Download

description: A dataset containing 1120 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Arctopus echinatus",
 "HasCoordinate is true"
 ]
}

 The dataset includes 1120 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0039403-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.33fcf4
title: Occurrence Download

description: A dataset containing 54340 species occurrences available in GBIF matching the query:
{
 "and" : [
 "GadmGid is CHN.6.15_1",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Aves"
 ]
}

 The dataset includes 54340 records from 10 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0039375-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.4wmma7
title: Architectures and Instruments for Enceladus Exploration

description: Enceladus, a moon of Saturn with a subsurface ocean and potential hydrothermal activity, is a crucial target for habitability and life detection mission concepts. While the Cassini mission provided important information about Enceladus, there are many unanswered and consequential questions remain including its habitability, geochemical history, and whether or not Enceladus currently hosts life. Furthermore, in order to plan future missions, Enceladus-relevant questions need to be reframed in terms of measurements performable by spacecraft missions and instrument requirements. We have developed a science traceability matrix (STM) detailing a directed set of science objectives for Enceladus relating to its geology and habitability based on the NIAC mission concept Enceladus Vent Explorer (EVE). This STM was designed to be broad and cover a significant science trade space for mission development; a companion paper discusses the scientific detail of the STM (Rodriguez et al., 2024). In this paper, we discuss which mission architectural features would be needed to meet different science goals and observables of the STM. Based on the STM, we identify direct access to ocean samples as an important architectural feature to fulfill measurements of habitability, variation within ocean levels, and life detection. We additionally propose the use of integrated instrument suites to address life detection science objectives. We highlight opportunities for advancement in research and technology development that could enable different science objectives, including autonomy and instrument design. We determined that for this STM and set of instruments, access to ocean samples is a high priority. This publication can be used as a framework for mission concept design and as a roadmap for development of new technology and instrument maturation for future investigations to maximize science return at Enceladus.
DOI: 10.48577/jpl.zwvc62
title: Thermal characteristics of active lava flows on Io observed by the JIRAM instrument on Juno

description: We use data from the Jovian InfraRed Auroral Mapper (JIRAM) instrument on the Juno spacecraft, acquired during close fly-bys of Jupiter’s moon Io between 2022 to 2024, to identify new characteristics of active lava flows on the surface. At least two new vents as well as a new flow field are identified along with some significant changes seen at other sites. Following on from the Voyager and Galileo missions, the lavas from Amirani and Prometheus volcanoes continue to be active suggesting a long duration (&gt;45 years) for these eruptions. The activity at Amirani has changed since observed by Galileo, with the northern (distal) part of the flow no longer active or below the detection limit of JIRAM at a spatial resolution of 1-10 km/pixel. The flow now displays multiple points of activity visible in the southern flow region and within the dark patera and fracture south of the flow, clearly seen in JIRAM’s higher resolution images. The activity at Prometheus did not show the major changes comparable to those observed between Voyager and Galileo, when the flow and plume moved ~90 km west. However, the hottest area of the flow has shifted to the region around and to the south of the source patera at the eastern end of the 100 km flow field, in the location of the main flow region observed during Voyager. A large (~130 x 40 km) active flow field was detected to the NE of Seth Patera as well as a probable new ~120 km long active flow at a previously unrecognized site designated “Unknown 13”. The spatial distribution of hotspots on each of the observed flows is consistent with the earlier suggestions that the flows are inflated pāhoehoe-type flow fields.
DOI: 10.48577/jpl.o9qvor
title: Are We There Yet? Challenges in Quantifying the Frequency of Earth Analogs in the Habitable Zone

description: Searching for life elsewhere in the universe is one of the most highly prioritized pursuits in astronomy today. However, the ability to observe evidence of Earth-like life through biosignatures is limited by54 the number of planets in the solar neighborhood with conditions similar to Earth. The occurrence rate55 of Earth-like planets in the habitable zones of Sun-like stars, η⊕, is therefore crucial for addressing56 the apparent lack of consensus on its value in the literature. Here we present a review of the current57 understanding of η⊕. We first provide definitions for parameters that contribute to η⊕. Then, we58 discuss the previous and current estimated parameter values and the context of the limitations on the59 analyses that produced these estimates. We compile an extensive list of the factors that go into any60 calculation of η⊕, and how detection techniques and surveys differ in their sensitivity and ability to61 accurately constrain η⊕. Understanding and refining the value of η⊕is crucial for upcoming missions62 and telescopes, such as the planned Habitable Worlds Observatory and the Large Interferometer for63 Exoplanets, which aim to search for biosignatures on exoplanets in the solar neighborhood.64
DOI: 10.48577/jpl.exojog
title: The response of terrestrial carbon fluxes in India to global climatic phenomena

description: A better understanding of country-scale anthropogenic carbon dioxide (CO2) emissions and natural flux estimates and the carbon-climate feedback, is critical in formulating national climate policies to attain net zero emissions. The irony is that some countries with high population density and fossil fuel emissions, such as India, which are in urgent need of developing such policies, have limited in situ observations to improve their understanding of regional carbon flux dynamics and carbon-climate interactions. Here, we use the atmospheric CO2 column observations from the Orbiting Carbon Observatory-2 (OCO-2) satellite to unravel the response of the Indian land biosphere to large-scale climatic phenomena such as El Niño-Southern Oscillation and Indian Ocean Dipole (IOD). An ensemble of global flux inverse models constrained by OCO-2 CO2 column observations indicate a reduction in CO2 uptake by the Indian terrestrial biosphere during El Niño and an enhanced uptake during La Niña and positive IOD (pIOD) events. During La Niña and pIOD events, Indian land biosphere carbon uptake could increase to up to 10% of India’s annual fossil fuel CO2 emissions. We find that the large Gross Primary Production variations, as compared to total ecosystem respiration, determined the response of net carbon flux variability to El Niño-Southern Oscillation and IOD. The contrasting response of the Indian land biosphere to these climatic events is due to the stronger sensitivity of photosynthetic CO2 uptake compared to respiration. The carbon climate constraints imposed by satellite observations over India help elucidate how biospheric uptake may offset anthropogenic emissions in the future.
DOI: 10.48577/jpl.aseuos
title: Boosting Astrocomb Reference Performance with a Wideband, Frequency-Stabilized WGM Etalon

description: Astrocombs are highly precise optical reference systems used for spectrograph calibration, enabling accurate and consistent measurement of stellar absorption line frequencies over a broad spectral range. By comparing a star’s spectrum to the astrocomb spectrum, minute radial velocity shifts-indicative of an exoplanet’s presence– can be detected. This work demonstrates a specially designed crystalline whispering-gallerymode resonator (WGMR) that serves as an astrocomb etalon, featuring a coupling wavelength span of two octaves and a quasi-single-mode family. The system’s compact design allows for dualmode thermometric frequency stabilization and vacuum packaging, effectively minimizing thermal and pressure-induced frequency drifts. Longterm frequency stability, measured via dual mode RF beat, is measured to be better than 2×10−12, with a projected long-term modal frequency stability of ≲ 10−10 (equivalently 3 cm s−1 in Doppler velocity). This architecture provides a novel capability as compact, ultra-wideband spectral reference for detecting small planets in long-period orbits around nearby stars.
DOI: 10.48577/jpl.b6cbh3
title: Expanding the Ice Inventory of NGC 1333 IRAS 2A with INDRA using JWST Observations: Tracing Organic Refractories and Beyond

description: In the era of JWST, with its unprecedented sensitivity and spectral resolution, infrared spectral surveys have revealed a rich inventory of ices, including complex organic molecules (COMs), in young stellar objects (YSOs). However, robust methods to decompose and quantify these absorption features particularly across broad spectral ranges, are still under investigation. We present INDRA (Ice-fitting with NNLS-based Decomposition and Retrieval Algorithm), a fully Python-based tool that performs continuum and silicate removal, global ice fitting using Weighted Non-Negative Least Squares (NNLS), and estimates column densities and statistical significance. We apply INDRA to NGC 1333 IRAS 2A, a target from the JWST Observations of Young protoStars (JOYS+) program previously studied using local fitting. We derive optical depths via polynomial continuum subtraction and remove silicate absorption using a synthetic model, isolating ice features for global MIRI fitting. Our results are consistent with previous local fits, confirming simple species and COMs, and expand the inventory by identifying additional absorption features from CO2 and NH+ 4 . We also propose the presence of organic refractories contributing up to 9.6% in the spectral region of ∼5–8 μm among the various ice components, whose inclusion significantly improves the global spectral fitting. These broad absorption features, extending across ∼5.5–11 μm, are likely produced by large, complex molecules containing carbonyl (C=O), hydroxyl (O–H), amine (N–H), and C–H bending modes. Our expanded inventory, now incorporating these organic residues, offers new insights into the chemical evolution of ices in starforming regions and highlights the importance of global spectral fitting in constraining ice compositions.
DOI: 10.48577/jpl.xo3y6w
title: Deep Space Optical Communications (DSOC) System Description and Performance

description: Deep Space Optical Communications (DSOC) project is validating a first of its kind system to operate end-to-end links from Mars distances. Data-rates of 8.3– 267 Mb/s (return) and 1.8 kb/s (forward) from 0.36-2.68 astronomical units (AU) have been demonstrated. The 22-cm aperture diameter flight laser transceiver (FLT) transmitting 4 W of average 1550 nm laser power is integrated to NASA’s Psyche Mission spacecraft on its cruise to the asteroid Psyche-16. A 1064 nm multi-beam laser assembly integrated to the Optical Communications Telescope Laboratory (OCTL) at Table Mountain, CA, irradiates the FLT by transmitting up to 3 kW of optical power. Link acquisition, tracking and forward communications are enabled with the uplink signal. The 5m aperture diameter Hale telescope at Palomar Mountain functions as the primary ground receiver for the return link. In this paper link parameter measurements will be compared to allocations made during the design and implementation phase of the project.
DOI: 10.48577/jpl.ohhkpk
title: A Roadmap for the Exploration of Encelad

description: Enceladus is a high priority target for the fields of astrobiology and planetary science given that it contains the three basic ingredients for life as we understand it: organic materials, a liquid solvent, and an energy source. This prioritization is reflected in the National Academies of Sciences, Engineering, and Medicine 2023-2032 Planetary Science and Astrobiology Decadal Survey which highlights Enceladus in the list of destinations for a NASA New Frontiers class mission and recommends an Enceladus Orbilander mission as the second priority new flagship mission this coming decade after a Uranus Orbiter and Probe. In 2021 the science definition team behind the Enceladus Vent Explorer, a concept funded under NASA’s Innovative Advanced Concepts award, held three workshops at the Jet Propulsion Laboratory to discuss high priority science that could be achieved over several missions to Enceladus. A product of these workshops was a list of investigations and their flow down to measurements at Enceladus, addressing two science goals: 1) "How has the thermal evolution of Enceladus impacted the moon's ability to sustain a liquid ocean and recycle nutrients?" and 2) "How has the astrobiological potential of Enceladus changed over time?" Critically, this set of investigations was not designed to fit a particular mission architecture, but rather to serve as a framework to guide the development of successive mission concepts outlined in the 2023 Planetary Science and Astrobiology Decadal Survey and beyond. Here, we discuss the goals, objectives, and physical parameters for each proposed investigation, and we review the science background and motivation for each. In addition, we introduce a novel approach to describe the abiotic organic state of a planetary body to facilitate the development of hypotheses related to the emergence of life. Finally, we provide recommendations for further development of technology and research. This paper aims to provide hypotheses that can guide future or ongoing mission concepts to Enceladus as well as other ocean worlds including Ceres, Europa, and Titan.
DOI: 10.17172/nomad/2025.11.17-1
title: NOMAD dataset: H/metal linewidth data
DOI: 10.48577/jpl.q3ipna
title: Ozone trends in the upper troposphere-lower stratosphere using equivalent latitude-potential temperature

description: We analyze ozone trends in the upper troposphere and lower stratosphere (UTLS,∼300-50 hPa), using geographical (latitude-pressure and latitude-altitude) and, for thefirst time, dynamical (equivalent latitude-potential temperature, EqL-θ) coordinates. Trendsare determined using linear least-squares fits, multiple linear regression, and dynamicallinear modeling. Regardless of the method, EqL-θ improves consistency between trendsacross the UTLS, reduces large UT tropical uncertainties, alters the magnitude of mid latitude trends, and, most notably, in the Southern polar lower stratosphere, reveals statistically significant trends exceeding 8% per decade during Antarctic Spring. This provides further evidence of Antarctic ozone recovery. These robust trends are not capturedusing geographical coordinates. We argue that EqL-θ enables more physically groundedinterpretations of chemical ozone trends and their uncertainties, as EqL-θ accounts forthe adiabatic (reversible) transport of ozone.
DOI: 10.48577/jpl.zu1dbh
title: La3-xTe4 thermoelectric legs with interlocking electrode interface via ink extrusion printing and sintering of powders

description: Geometrically-complex thermoelectric legs of n-type LaTe1.47 with relative densities of ~82% and high phase purity are synthesized via ink-extrusion printing of pre-alloyed powders at ambient temperature, followed by debinding and sintering at high temperature. By using Te-rich powder, we offset Te sublimation during sintering to achieve LaTe1.47 legs with a high figure of merit value (zT = 1.49 ± 0.24 at 1250 K), on par with state-of-the-art LaTe1.46 synthesized via hot pressing. Also, the ink printing methodology enables printing and diffusion bonding between a LaTe1.47 leg and a Ni electrode with a non-flat interface designed to achieve mechanical interlocking with minimal interdiffusion. To simulate the thermomechanical stress at interlocking interfaces – from cooling following fabrication to heating to operation – we develop a finite-element model of the leg/electrode assemblies and demonstrate the importance of creep in relaxing the stress state of both phases, using creep properties measured on dense La3-xTe4 at 900-1000ºC. Additionally, these designed interfaces have the potential to mitigate crack propagation at the thermoelectric-metal junction caused by thermal expansion mismatch. The ink printing approach presented here enables scalable, cost-effective fabrication of high-performing La3-xTe4 thermoelectric legs which are conducive to designed electrode-leg interface bonding, towards efficient and thermomechanically-robust high-temperature thermoelectric devices.
DOI: 10.48577/jpl.fzacdq
title: Land-Ocean Differences in Tropical Deep Convective Clouds: Intercomparison of DYAMOND simulations and A-Train Observations

description: This study investigates how deep convective clouds and their surrounding environments are represented in DYAMOND simulations by comparing them with CloudSat observations across three tropical "chimney zones"—Tropical Africa, Tropical Amazonia, and the Tropical Warm Pool (TWP). These regions, spanning a spectrum of land-ocean contrasts, exhibit distinct environmental and convective characteristics. While DYAMOND simulations capture environmental differences among the regions, biases persist in representing convective intensity and precipitation dynamics. The simulations overestimate convective intensity in the TWP, likely due to higher-than-realistic conversion efficiencies of potential energy to kinetic energy. Precipitation formation also deviates from observations, occurring at higher altitudes with weak vertical velocities, indicating misrepresentations in cloud microphysics and updraft dynamics. These findings highlight the need for improved coupling of cloud dynamics and microphysics in global models to better simulate deep convection and its environmental interactions.
DOI: 10.48577/jpl.ulfsee
title: REx CorGI I. manuscript initial version

description: The upcoming Roman Coronagraph will be the first high-contrast instrument in space capable of high-order wavefront sensing and control technologies, a critical technology demonstration for the proposed Habitable Worlds Observatory (HWO) that aims to directly image and characterize habitable exoEarths. The nominal Roman Coronagraph observing plan involves alternating observations of a science target and a bright, nearby reference star. High contrast is achieved using wavefront sensing and control, also known as “digging a dark hole”, where performance depends on the properties of the reference star, requiring V &lt; 3, a resolved stellar diameter &lt;2 mas, and no stellar multiplicity. The imposed brightness and diameter criteria limit the sample of reference star candidates to high-mass main sequence and post-main sequence objects, where multiplicity rates are high. A future HWO coronagraph may have similarly restrictive criteria in reference star selection. From an exhaustive literature review of 95 stars, we identify an initial list of 40 primary and 18 reserve reference star candidates relevant to both the Roman Coronagraph and HWO. We present results from an initial survey of these candidates with high-resolution adaptive optics imaging and speckle interferometry and identify no new companions. We discuss the need for higher-contrast observations to sufficiently vet these reference star candidates prior to Roman Coronagraph observations along with the implications of reference star criteria on observation planning for Roman and HWO.
DOI: 10.15468/dl.8d3b38
title: Occurrence Download

description: A dataset containing 41 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Canada",
 "Geometry POLYGON ((-73.173752 45.53377, -73.124313 45.53377, -73.124313 45.569832, -73.173752 45.569832, -73.173752 45.53377))",
 "TaxonKey is Tracheophyta",
 "Year is greater than 2010",
 "GadmGid is CAN.11_1",
 "DatasetKey is one of (Herbier Louis-Marie (QFA) - Collection de plantes vasculaires, Herbier du Québec (QUE) - Collection de plantes vasculaires, Jardin botanique de Montréal (JBM), Marie-Victorin Herbarium (MT) - Plantes vasculaires, National Collection of Vascular Plants (DAO), UQTR-herbarium (Herbier Estelle-Lacoursière))",
 "HasCoordinate is true",
 "OccurrenceStatus is Present"
 ]
}

 The dataset includes 41 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0039406-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.mdtrae
title: Lightning Characteristics of Atmospheric Rivers over the Americas Observed by GOES-16

description: No abstract available.