cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.48577/jpl.ossxa8
title: High Temperature Primary Battery for Venus Surface Missions

description: The hostile environment of high temperature and CO2 pressure has limited previous Venus surface mission durations to less than two hours giving only a glimpse of the Venus surface, despite the use of considerable insulation, phase-change materials, and similar heat sinks to isolate the payload and avionics from high surface temperatures. NASA has initiated studies to develop new power technologies that can tolerate the high Venus surface temperature of 465 oC and pressure of 92 bar, and operate for future long-duration Venus landers and probes. Such in-situ investigations are crucial to gather basic information on the crust, mantle, core, and bulk composition of Venus for understanding the evolutionary paths of Venus in relation to Earth. In this paper, we describe the development of high temperature primary batteries based on lithium alloy anodes, transition metal sulfide cathodes, and molten salt electrolytes. Among the various cathode materials examined for thermal stability and for electrochemical activity, FeS has emerged as the most suitable cathode. With optimized cell components, cell design, and operational parameters, laboratory test cells were fabricated, which demonstrated continuous operation of ~26 days at 475 oC. These batteries will enable new long-duration surface missions for detailed surface exploration of Venus.
DOI: 10.48577/jpl.sqadqk
title: Global space-based isoprene measurements constrain emissions and atmospheric oxidation

description: Isoprene is the dominant non-methane organic compound emitted to the atmosphere1-3, where it drives ozone and aerosol production, modulates atmospheric oxidation, and interacts with the global nitrogen cycle4-8. Isoprene emissions are highly uncertain1,9, as is the non-linear chemistry coupling isoprene and its primary sink (the hydroxyl radical, OH)10-13. Here we present the first global isoprene measurements from space, and show that combined with measurements of its oxidation product formaldehyde, these data provide new constraints on isoprene emissions and atmospheric oxidation. We find that isoprene:formaldehyde relationships measured from space are broadly consistent with current understanding of isoprene-OH chemistry, with no indication of missing OH recycling at low-NOx. We analyze these datasets over four global isoprene hotspots in relation to model predictions, and present a first demonstration of isoprene emission quantification based directly on satellite measurements of isoprene itself. Major discrepancies emerge over Amazonia, where current underestimates of natural NOx emissions bias modeled OH and hence isoprene, and southern Africa, where a prominent isoprene hotspot is missing from bottom-up predictions. A multi-year analysis sheds light on interannual isoprene variability, including the role of El Nino, and demonstrates the potential for the CrIS measurements to further advance understanding of ecosystem processes, isoprene emissions, and atmospheric chemistry.
DOI: 10.15468/dl.t4z8s2
title: Occurrence Download

description: A dataset containing 72 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Dendrobium calcaratum A.Rich."
 ]
}

 The dataset includes 72 records from 16 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0170002-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.zu5xur
title: On the Parameterization of Convective Downdrafts to Represent Marine Stratocumulus Clouds

description: The role of non-local transport on the development and maintenance of marinestratocumulus (Sc) clouds in coarse resolution models is investigated,with a special emphasis on the downdraft contribution. A new parameterizationof cloud-top triggered downdrafts is proposed and validated againstlarge-eddy simulation (LES) for two Sc cases. The applied non-local massfluxscheme is part of the stochastic multi-plume eddy-diffusivity/mass-flux(EDMF) framework decomposing the turbulent transport into local and nonlocalcontributions. The complementary local turbulent transport is representedwith the Mellor-Yamada-Nakanishi-Niino (MYNN) scheme. ThisEDMF version has been implemented in the Weather Research and Forecasting(WRF) single-column model (SCM) and tested for three model versions:without mass flux, with updrafts only, and with both updrafts and downdrafts.In the LES, the downdraft and updraft contributions to the total heat and moisturetransport are comparable and significant. The WRF SCM results show agood agreement between the parameterized downdraft turbulent transport andLES. While including updrafts greatly improves the modeling of Sc cloudsover the simulation without mass flux, the addition of downdrafts is less significant,although it helps improve the moisture profile in the planetary boundarylayer.
DOI: 10.15468/dl.vev7vd
title: Occurrence Download

description: A dataset containing 2051 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Quercus alba L."
 ]
}

 The dataset includes 2051 records from 83 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001524-150221044754056/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-44980
title: Correspondence / memoranda, 1991 May 10 - June 24

description: Memos - (1) re: appendix to the commission report; (2) re: interview with Lieutenant Thomas W Lorenzen. Memo - re: LAPD interviews of FTOs and probationers - including various interview summaries. Memos re June meeting schedule and topics; various interviews; security, etc., 1991 May 10 - June 24. PART OF A SERIES: The series relates to the work product of Sibley & Austin, whose staff contributed to the Commission's probe of excessive force allegations brought against the LAPD. Included in the series are memoranda, witness testimonies, interview summaries, copies of officers' background files, after-action summaries and reports, and notes taken by the firm. Materials relate to four major areas of study undertaken by the firm: the Justice for Janitors labor demonstration of 1990, the jail ward of County/USC Medical Center, Los Angeles city jails, and a review of the LAPD's Background Investigation Unit.
DOI: 10.48577/jpl.8y5ie9
title: The CatWISE Preliminary Catalog: Motions from WISE and NEOWISE Data

description: CatWISE is a program to catalog sources selected from combined WISE and NEO- WISE all-sky survey data at 3.4 and 4.6 μm (W1 and W2). The CatWISE Preliminary Catalog consists of 900,849,014 sources measured in data collected from 2010 to 2016. This dataset represents four times as many exposures and spans over ten times as large a time baseline as that used for the AllWISE Catalog. CatWISE adapts AllWISE software to measure the sources in coadded images created from six-month subsets of these data, each representing one coverage of the inertial sky, or epoch. The catalog includes the measured motion of sources in 8 epochs over the 6.5 year span of the data. From comparison to Spitzer, the SNR=5 limits in magnitudes in the Vega system are W1=17.67 and W2=16.47, compared to W1=16.96 and W2=16.02 for AllWISE. From comparison to Gaia, CatWISE positions have typical accuracies of 50 mas for stars at W1=10mag and 275mas for stars at W1=15.5mag. Proper motions have typical ac- curacies of 10masyr−1 and 30masyr−1 for stars with these brightnesses, an order of magnitude better than from AllWISE. The catalog is available in the WISE/NEOWISE Enhanced and Contributed Products area of the NASA/IPAC Infrared Science Archive.
DOI: 10.48577/jpl.dplnhn
title: Autonomous Detection of Particles and Tracks in Optical Images

description: When optical navigation images acquired by the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer) mission revealed the periodic ejection of particles from asteroid (101955) Bennu, it became a mission priority to quickly identify and track these objects for both spacecraft safety and scientific purposes. The large number of particles and the mission criticality rendered time-intensive manual inspection impractical. We present autonomous techniques for particle detection and tracking that were developed in response to the Bennu phenomenon but that have the capacity for general application to particles in motion about a celestial body. In an example OSIRIS-REx dataset, our autonomous techniques identified 93.6% of real particle tracks and nearly doubled the number of tracks detected versus manual inspection alone.
DOI: 10.15468/dl.5vmqe8
title: Occurrence Download

description: A dataset containing 4 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Dendrobium podochiloides Schltr."
 ]
}

 The dataset includes 4 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0170007-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.s2mrzs
title: Delta-doped Electron Multiplying CCDs for FIREBall-2.

description: Abstract. We present the status of on-going detector development efforts for our joint NASA/CNES balloon14borne UV multi-object spectrograph, the Faint Intergalactic Redshifted Emission Balloon (FIREBall-2; FB-2). FB-215 demonstrates a new UV detector technology, the delta-doped Electron Multiplying CCD (EMCCD), in a low risk16 suborbital environment, to prove the performance of EMCCDs for future space missions and Technology Readiness17 Level (TRL) advancement. EMCCDs can be used in photon counting (PC) mode to achieve extremely low readout18 noise (&lt;1 electron). Our testing has focused on reducing clock-induced-charge (CIC) through wave shaping and well19 depth optimization with a Nu¨vu¨ V2 CCCP Controller, measuring CIC at 0.001 e􀀀/pixel/frame. This optimization also20 includes methods for reducing dark current, via cooling, and substrate voltage levels. We discuss the challenges of21 removing cosmic rays, which are also amplified by these detectors, as well as a data reduction pipeline designed for our22 noise measurement objectives. FB-2 flew in 2018, providing the first time an EMCCD was used for UV observations23 in the stratosphere. FB-2 is currently being built up to fly again in 2020, and improvements are being made to the24 EMCCD to continue optimizing its performance for better noise control.
DOI: 10.15468/dl.azwfz4
title: Occurrence Download

description: A dataset containing 14553 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Ramphastos sulfuratus R.Lesson, 1830"
 ]
}

 The dataset includes 14553 records from 87 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001524-150330110031120/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-44855
title: Correspondence / memoranda (2 of 2), 1976 - 1991 May 17

description: Correspondence and memoranda in support of the Independent Commission on the Los Angeles Police Department (2 of 2), 1976 - 1991 May 17. PART OF A SERIES: The series relates to the work product of Sibley & Austin, whose staff contributed to the Commission's probe of excessive force allegations brought against the LAPD. Included in the series are memoranda, witness testimonies, interview summaries, copies of officers' background files, after-action summaries and reports, and notes taken by the firm. Materials relate to four major areas of study undertaken by the firm: the Justice for Janitors labor demonstration of 1990, the jail ward of County/USC Medical Center, Los Angeles city jails, and a review of the LAPD's Background Investigation Unit.
DOI: 10.48577/jpl.novbyz
title: Grounding line retreat of Denman Glacier, East Antarctica, measured with COSMO-SkyMed radar interferometry data

description: Denman Glacier, East Antarctica, holds an ice volume equivalent to a 1.5 m rise in global sea level. Using satellite radar interferometry from the COSMO-SkyMed constellation, we detect a 5.40.3 km grounding line retreat between 1996 and 2017-2018. A novel reconstruction of the glacier bed topography indicates that the retreat proceeds on the western flank along a previously unknown 5 km wide, 1,800 m deep trough, deepening to 3,400 m below sea level. On the eastern ank, the grounding line is stabilized by a 10 km wide ridge. At tidal frequencies, the grounding line extends over a several kilometer-wide grounding zone, enabling warm ocean water to melt ice at critical locations for glacier stability. If warm, modied Circumpolar Deep Water reaches the sub-ice-shelf cavity and continues to melt ice at a rate exceeding balance conditions, the potential exists for Denman Glacier to retreat irreversibly into the deepest, marine-based basin in Antarctica.
DOI: 10.48577/jpl.fnmwen
title: Updated Europa Gravity Field and Interior Structure from a Reanalysis of Galileo Tracking Data

description: The Galileo radio tracking data were reanalysed exploiting the new knowledge of Jupiter obtained by the Juno mission, together with modern orbit determination techniques developed for the Cassini data analysis. Using Doppler data acquired during six encounters of Europa an updated gravity field of the moon was obtained, resulting in a value of C22 statistically different from the available literature. The new value suggests a thinner ice-water shell and a less dense interior.
DOI: 10.15468/dl.xnpca2
title: Occurrence Download

description: A dataset containing 20 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Solanum stenotomum Juz. & Bukasov, Solanum stenotomum Juz. & Bukasov, Solanum stenotomum subsp. goniocalyx (Juz. & Bukasov) Hawkes)",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "Year is greater than or equal to 1943",
 "Year is less than or equal to 2023",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil)"
 ]
 }
 }
 ]
}

 The dataset includes 20 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0013026-240202131308920/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-44885
title: Drafts (1 of 2), 1990 - 1991 July 1

description: General correspondence and materials obtained from other sources. Included are drafts of the report as well as correspondence amongst the general counsel and deputy general counsel (1 of 2), 1990 - 1991 July 1. PART OF A SERIES: To better understand how LAPD management reacts to problem officers, Skadden, Arps, Slate, Meagher & Flom examined the Department's procedures regarding the identification, documentation, and response to personnel complaints. The series includes memoranda and correspondence; attorney notes; materials related to the firm's administrative capacities, including staff rosters and work plans; flow charts that illustrate the LAPD's structure and organization; and draft copies of the firm's contributions to the Commission report.
DOI: 10.48577/jpl.rjfncu
title: Testing the relativistic Doppler boost hypothesis for the binary candidate quasar PG1302-102 with multi-band Swift data

description: The bright quasar PG1302-102 has been identified as a candidate supermassive black hole binary from its near-sinusoidal optical variability. While the significance of its optical periodicity has been debated due to the stochastic variability of quasars, its multi-wavelength variability in the ultraviolet (UV) and optical bands is consistent with relativistic Doppler boost caused by the orbital motion in a binary. However, this conclusion was based previously on sparse UV data which were not taken simultaneously with the optical data. Here we report simultaneous follow-up observations of PG1302-102 with the Ultraviolet Optical Telescope on the Neil Gehrels Swift Observatory in six optical + UV bands. We perform a statistical analysis to further test the Doppler boost hypothesis, which predicts that UV variability should track the optical, but with a ∼ 2.2 times higher amplitude. We find that the additional nine Swift observations produce light curves roughly consistent with this trend. The data are consistent with the Doppler boost hypothesis when we compare the optical Bband and UV light curves. However, the ratio of UV to V-band variability is larger than expected and is consistent with the Doppler model, only if either the UV/optical spectral slopes vary, the stochastic variability makes a large contribution in the UV, or the sparse new optical data underestimate the true optical variability. We have evidence for the latter from comparison with the optical light curve from ASAS-SN. Additional, simultaneous optical + UV observations tracing out another cycle of the 5.2-year proposed periodicity should lead to a definitive conclusion.
DOI: 10.15468/dl.cgfwgm
title: Occurrence Download

description: A dataset containing 725 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "or" : [
 "PublishingCountry is Colombia",
 {
 "and" : [
 "Country is Colombia",
 {
 "not" : {
 "Issue" : [
 "is Country coordinate mismatch"
 ]
 }
 }
 ]
 }
 ]
 },
 {
 "and" : [
 "GadmGid is one of (COL.24.2_2)",
 "TaxonKey is one of (Mammalia)",
 "StateProvince ~putumayo",
 "Elevation 310-580m"
 ]
 }
 ]
}

 The dataset includes 725 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002217-240506114902167/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.muproj
title: A Twilight Search for Atiras, Vatiras and Co-orbital Asteroids: Preliminary Results

description: Near-Earth Objects (NEOs) that orbit the Sun on or within Earth's orbit are tricky to detect for 24 Earth-based observers due to their proximity to the Sun in the sky. These small bodies hold clues to the 25 dynamical history of the inner solar system as well as the physical evolution of planetesimals in extreme 26 environments. Populations in this region include the Atira and Vatira asteroids, as well as Venus and 27 Earth co-orbital asteroids. Here we present a twilight search for these small bodies, conducted using 28 the 1.2-m Oschin Schmidt and the Zwicky Transient Facility (ZTF) camera at Palomar Observatory. 29 The ZTF twilight survey operates at solar elongations down to 35 with limiting magnitude of r = 19:5. 30 During a total of 40 evening sessions and 62 morning sessions conducted between 2018 November 15 31 and 2019 June 23, we detected 6 Atiras, including 2 new discoveries 2019 AQ3 and 2019 LF6, but no 32 Vatiras or Earth/Venus co-orbital asteroids. NEO population models show that these new discoveries 33 are likely only the tip of the iceberg, with the bulk of the population yet to be found. The population 34 models also suggest that we have only detected 5{7% of the H &lt; 20 Atira population over the 7-month 35 survey. Co-orbital asteroids are smaller in diameters and require deeper surveys. A systematic and 36 ecient survey of the near-Sun region will require deeper searches and/or facilities that can operate 37 at small solar elongations.
DOI: 10.15468/dl.4dnvg1
title: Occurrence Download

description: A dataset containing 25 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Thorius narismagnus Shannon & Werler, 1955",
 "DatasetKey is MVZ Herp Collection (Arctos)"
 ]
}

 The dataset includes 25 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001524-150422101436696/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.pgrlqm
title: Planetary Rover Exploration Combining Remote and In Situ Measurements for Active Spectroscopic Mapping

description: Maintaining high levels of productivity for planetary rovers is difficult due to limited communication and heavy reliance on ground control. There is a need for highlevel autonomy that enables rovers to take more adaptive and efficient actions based on real-time information. This paper presents an autonomous mapping and exploration approach for planetary rovers. We first describe a machine learning model that actively combines remote and rover measurements in order to map and reconstruct a scene. We focus on spectroscopic data because they are commonly used to investigate planetary surface composition. We then incorporate notions from information theory and non-myopic path planning to improve exploration productivity. Finally, we demonstrate the feasibility and successful performance of our approach via spectroscopic investigations of Cuprite, Nevada; a well-studied region of mineralogical and geological interest. We first perform a detailed analysis in simulations, and then validate those results with an actual rover in the field in Nevada.
DOI: 10.48577/jpl.eayeh8
title: A Linear Viscoelasticity for Decadal to Centennial Time Scale Mantle Deformation

description: The Extended Burgers material (EBM) model provides a linear viscoelastic theory for in15 terpreting a variety of rock deformation phenomena in geophysics, playing an increasingly16 important role in parameterizing laboratory data, providing seismic wave velocity and at17 tenuation interpretations, and in analyses of solid planetary tidal dispersion and quality18 factor Q. At the heart of the EBM approach is the assumption of a distribution of relax19 ation spectra tied to rock grain boundary and interior granular mobility. Furthermore, the20 model incorporates an asymptotic long-term limiting behaviour that is Maxwellian. Here21 we use the extensively developed linear theory of viscoelasticity to isolate those parame22 ters of EBM that apply to both post-seismic relaxation processes involving flow of olivine23 rich upper mantle material and to studies of tides, where periods of forcing range from24 12 hours to 18.6 years. The isolated EBM parameters should also apply to theoretical and25 geodetic studies of glacial isostatic adjustment, especially when the initiation of contin26 uous cryospheric surface unloading dates to the 20th or 21st century. Using analytical27 Laplace transformed solutions of Boussinesq’s half-space load problem, we show that the28 effects of EBM transient rheology may have substantial influence on geodetic interpreta29 tions of unloading induced crustal motions even on time scales that are sub-decadal.
DOI: 10.48577/jpl.alhxdw
title: Widespread hematite at high latitudes of the Moon

description: Hematite (Fe2O3) is a common oxidization product on Earth, Mars, and some asteroids. Although oxidizing processes have been speculated to operate on the lunar surface and form ferric iron bearing minerals, unambiguous detections of ferric minerals forming in the highly reducing conditions on the Moon have remained elusive. Our analyses of Moon Mineralogy Mapper (M3) data show that hematite, a ferric mineral, is present at high latitudes on the Moon, mostly associated with east-equator facing sides of topographic highs, and is more prevalent on the nearside than the far side. Oxygen delivered from Earth's upper atmosphere could be the major oxidant that forms lunar hematite. Hematite at craters of different ages may have preserved the oxygen isotopes of Earth's atmosphere in the past billions of years. Future oxygen isotope measurements can test our hypothesis and may help to reveal the evolution of Earth's atmosphere.