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Recent Publications

  • Lundesgaard O., Winsor P., Truffer M., Merrifield M., Powell B., Statscewich H., Eidam E., Smith C.R.  2020.  Hydrography and energetics of a cold subpolar fjord: Andvord Bay, western Antarctic Peninsula. 181
    Abstract Summary:

    Fjords along the western Antarctic Peninsula contain rich marine ecosystems and tidewater glaciers potentially sensitive to ocean change, but much is unknown about the physical oceanography of these fjords. This paper presents a comprehensive description of the physical environment of Andvord Bay, a glacial fjord located in the Gerlache Strait on the northern end of the Peninsula. Measurements were collected as part of the FjordEco program...

  • Wilbourn E.K, Thornton D.CO, Ott C., Graff J., Quinn P.K, Bates T.S, Betha R., Russell LM, Behrenfeld M.J, Brooks S.D.  2020.  Ice nucleation by marine aerosols over the North Atlantic Ocean in late spring. 125
    Abstract Summary:

    Here we report the ice nucleating temperatures of marine aerosols sampled in the subarctic Atlantic Ocean during a phytoplankton bloom. Ice nucleation measurements were conducted on primary aerosol samples and phytoplankton isolated from seawater samples. Primary marine aerosol samples produced by a specialized aerosol generator (the Sea Sweep) catalyzed droplet freezing at temperatures between -33.4 degrees C and - 24.5 degrees C, with a...

  • Abstract Summary:

    The double-ITCZ bias has puzzled the climate modeling community for more than two decades. Here we show that, over the northeastern Pacific Ocean, precipitation and sea surface temperature (SST) biases are seasonally dependent in the NCAR CESM1 and 37 CMIP5 models, with positive biases during boreal summer-autumn and negative biases during boreal winter-spring, although the easterly wind bias persists year round. This seasonally dependent...

  • Mazloff MR, Cornuelle B., Gille ST, Wang J.B.  2020.  The importance of remote forcing for regional modeling of internal waves. 125
    Abstract Summary:

    Regional ocean general circulation models are generally forced at the boundaries by mesoscale ocean dynamics and barotropic tides. In this work we provide evidence that remotely forced internal waves can be a significant source of energy for the dynamics. We compare global and regional model solutions within the California Current System. Both models have similar inputs, forcings, and identical grids and numerics. The global model has a...

  • Kennel C.F, Yulaeva E..  2020.  Influence of Arctic sea-ice variability on Pacific trade winds. 117:2824-2834.
    Abstract Summary:

    A conceptual model connecting seasonal loss of Arctic sea ice to midlatitude extreme weather events is applied to the 21st-century intensification of Central Pacific trade winds, emergence of Central Pacific El Nino events, and weakening of the North Pacific Aleutian Low Circulation. According to the model, Arctic Ocean warming following the summer sea-ice melt drives vertical convection that perturbs the upper troposphere. Static stability...

  • Bai R., Cruz-Monserrate Z., Fenical W, Pettit G.R, Hamel E..  2020.  Interaction of diazonamide A with tubulin. 680
    Abstract Summary:

    [H-3]Diazonamide A ([H-3]DZA), prepared from the natural product isolated from Diazona angulata, bound to tubulin in larger aberrant assembly products (>500 kDa by sizing HPLC) but not to the alpha beta-tubulin heterodimer. The binding reaction was rapid, but stoichiometry was low. Stoichiometry was enhanced up to 8-fold by preincubating the tubulin in the reaction mixture prior to adding the [H-3]DZA. Although Mg2+ did not affect binding...

  • Krause J.W, Brzezinski M.A, Largier J.L, McNair H.M, Maniscalco M., Bidle K.D, Allen A.E, Thamatrakoln K..  2020.  The interaction of physical and biological factors drives phytoplankton spatial distribution in the northern California Current.
    Abstract Summary:

    Transitions in phytoplankton community composition are typically attributed to ecological succession even in physically dynamic upwelling systems like the California Current Ecosystem (CCE). An expected succession from a high-chlorophyll (similar to 10 mu g L-1) diatom-dominated assemblage to a low-chlorophyll (< 1.0 mu g L-1) non-diatom dominated assemblage was observed during a 2013 summer upwelling event in the CCE. Using an...

  • Abstract Summary:

    Isotopic compositions of reservoirs in the Moon can be constrained from analysis of rocks generated during lunar magmatic differentiation. Mare basalts sample the largest lunar mantle volume, from olivine- and pyroxene-rich cumulates, whereas ferroan anorthosites and magnesian-suite rocks represent early crustal materials. Incompatible element enriched rocks, known as 'KREEP,' probably preserve evidence for the last highly differentiated...

  • Fryer P., Wheat C.G, Williams T., Kelley C., Johnson K., Ryan J., Kurz W., Shervais J., Albers E., Bekins B. et al..  2020.  Mariana serpentinite mud volcanism exhumes subducted seamount materials: implications for the origin of life. 378
    Abstract Summary:

    The subduction of seamounts and ridge features at convergent plate boundaries plays an important role in the deformation of the overriding plate and influences geochemical cycling and associated biological processes. Active serpentinization of forearc mantle and serpentinite mud volcanism on the Mariana forearc (between the trench and active volcanic arc) provides windows on subduction processes. Here, we present (1) the first observation of...

  • Sepúlveda I, Haase JS, Carvajal M, Xu X, Liu PL-F.  2020.  Modeling the sources of the 2018 Palu, Indonesia, tsunami using videos from social media. :e2019JB018675.
    Abstract Summary:

    The 2018 Palu tsunami contributed significantly to the devastation caused by the associated Mw 7.5 earthquake. This began a debate about how the moderate size earthquake triggered such a large tsunami within Palu Bay, with runups of more than 10 m. The possibility of a large component of vertical coseismic deformation and submarine landslides have been considered as potential explanations. However, scarce instrumental data has made it...

  • Abstract Summary:

    Marine sponge holobionts, defined as filter-feeding sponge hosts together with their associated microbiomes, are prolific sources of natural products. The inventory of natural products that have been isolated from marine sponges is extensive. Here, using untargeted mass spectrometry, we demonstrate that sponges harbor a far greater diversity of low-abundance natural products that have evaded discovery. While these low-abundance natural...

  • Byun G., Akins F.H, Gemba K.L, Song HC, Kuperman WA.  2020.  Multiple constraint matched field processing tolerant to array tilt mismatch. 147:1231-1238.
    Abstract Summary:

    A multiple constraint method (MCM) specifically designed to accommodate the uncertainty of array tilt is developed for matched field processing (MFP). Combining the MCM with the white noise gain constraint method results in a processor that is tolerant to both array tilt and environmental mismatch. Experimental results verify the robustness of the proposed MFP to localize and track a surface ship radiating broadband noise (200-500 Hz), using...

  • Dyonisius M.N, Petrenko VV, Smith A.M, Hua Q., Yang B, Schmitt J., Beck J., Seth B., Bock M., Hmiel B. et al..  2020.  Old carbon reservoirs were not important in the deglacial methane budget. 367:907-+.
    Abstract Summary:

    Permafrost and methane hydrates are large, climate-sensitive old carbon reservoirs that have the potential to emit large quantities of methane, a potent greenhouse gas, as the Earth continues to warm. We present ice core isotopic measurements of methane (Delta C-14, delta C-13, and delta D) from the last deglaciation, which is a partial analog for modern warming. Our results show that methane emissions from old carbon reservoirs in response...

  • Bhatla R., Verma S., Ghosh S., Mall R.K.  2020.  Performance of regional climate model in simulating Indian summer monsoon over Indian homogeneous region. 139:1121-1135.
    Abstract Summary:

    The performance and validation of regional climate model (RegCM-4.3) simulation of Indian summer monsoon rainfall (ISMR) have been conducted with a futuristic view of climate change study with the convective parameterization schemes (CPSs) over the different homogeneous regions of India. The dynamical downscaling of RegCM-4.3 has been done over South Asian Coordinated Regional Climate Downscaling Experiment (CORDEX) domain with the lateral...

  • Pezner A.K, Pivovaroff A.L, Sun W., Sharifi M.R, Rundel P.W, Seibt U..  2020.  Plant functional traits predict the drought response of native California plant species. 181:256-265.
    Abstract Summary:

    Premise of research. As extreme climate events, such as California's 2012-2016 drought, become more frequent with climate change, it is imperative to understand how different native plant communities respond to drought-induced dehydration stress. Chaparral and California sage scrub (CSS), two widespread plant communities in California, face threats from droughts of increased frequency and severity. Despite chaparral and CSS plants being...

  • Beer E., Eisenman I, Wagner T.JW.  2020.  Polar amplification due to enhanced heat flux across the halocline. 47
    Abstract Summary:

    Polar amplification is a widely discussed phenomenon, and a range of mechanisms have been proposed to contribute to it, many of which involve atmospheric and surface processes. However, substantial questions remain regarding the role of ocean heat transport. Previous studies have found that ocean heat transport into the Arctic increases under global warming, but the reasons behind this remain unresolved. Here, we investigate changes in...

  • Trehu A.M, de Moor A., Madrid J.M, Saez M., Chadwell C.D, Ortega-Culaciati F., Ruiz J., Ruiz S., Tryon M.D.  2020.  Post-seismic response of the outer accretionary prism after the 2010 Maule earthquake, Chile. 16:13-32.
    Abstract Summary:

    To investigate the dynamic response of the outer accretionary prism up-dip from the patch of greatest slip during the 2010 M-w 8.8 Maule earthquake (Chile), 10 ocean-bottom seismometers (OBSs) were deployed from May 2012 to March 2013 in a small network with an inter-instrument spacing of 710 km. Nine were recovered, with four recording data from intermediate-band three-component seismometers and differential pressure gauges, and five...

  • Hmiel B., Petrenko VV, Dyonisius M.N, Buizert C, Smith A.M, Place P.F, Harth C, Beaudette R., Hua Q., Yang B et al..  2020.  Preindustrial (CH4)-C-14 indicates greater anthropogenic fossil CH4 emissions. 578:409-+.
    Abstract Summary:

    Atmospheric methane (CH4) is a potent greenhouse gas, and its mole fraction has more than doubled since the preindustrial era(1). Fossil fuel extraction and use are among the largest anthropogenic sources of CH4 emissions, but the precise magnitude of these contributions is a subject of debate(2,3). Carbon-14 in CH4 ((CH4)-C-14) can be used to distinguish between fossil (C-14-free) CH4 emissions and contemporaneous biogenic sources; however,...

  • Le Bras I.AA, Straneo F, Holte J., de Jong M.F, Holliday N.P.  2020.  Rapid export of waters formed by convection near the Irminger Sea's western boundary. 47
    Abstract Summary:

    The standard view of the overturning circulation emphasizes the role of convection, yet for waters to contribute to overturning, they must not only be transformed to higher densities but also exported equatorward. From novel mooring observations in the Irminger Sea (2014-2016), we describe two water masses that are formed by convection and show that they have different rates of export in the western boundary current. Upper Irminger Sea...

  • Atamanchuk D., Koelling J., Send U, Wallace D.WR.  2020.  Rapid transfer of oxygen to the deep ocean mediated by bubbles.
    Abstract Summary:

    Bubble-mediated flux of oxygen into the Labrador Sea surface ocean contributes to air-sea gas exchange, suggest observations from moored profiling and Argo float data. Climate models that omit the process may underestimate oxygen in the deep ocean. The concentration of oxygen exerts major controls on life in the ocean, and its distribution in the ocean and atmosphere carries information about biological productivity, transports of mass and...

  • Eliashiv J., Subramanian AC, Miller AJ.  2020.  A reliability budget analysis of CESM-DART. 12
    Abstract Summary:

    A reliability budget is used to diagnose potential sources of error (departure from observations) in a new prototype coupled ocean-atmosphere ensemble Kalman filter reanalysis product, the Community Earth System Model using the Data Assimilation Research Testbed (CESM-DART). In areas with sufficient observations, the mean bias in zonal wind was generally very low compared to the spread due to ensemble variance, which did not exhibit patterns...

  • Villarino E., Irigoien X., Villate F., Iriarte A., Uriarte I., Zervoudaki S., Carstensen J., O'Brien T.D, Chust G..  2020.  Response of copepod communities to ocean warming in three time-series across the North Atlantic and Mediterranean Sea. 636:47-61.
    Abstract Summary:

    The rapid warming of the world's oceans during the last few decades has affected distributional patterns of marine planktonic communities. Here, we analyse links between sea warming and changes in copepod community composition over the last 3 decades (1980-2012). We used zooplankton time-series data which included 79 species of copepods collected at 3 sites in the eastern North Atlantic (Bay of Biscay and the Kattegat Sea) and the...

  • Resetarits E.J, Torchin M.E, Hechinger R.F.  2020.  Social trematode parasites increase standing army size in areas of greater invasion threat. 16
    Abstract Summary:

    Organisms or societies are resource limited, causing important trade-offs between reproduction and defence. Given such trade-offs, optimal allocation theory predicts that, for animal societies with a soldier caste, allocation to soldiers should reflect local external threats. Although both threat intensity and soldier allocation can vary widely in nature, we currently lack strong evidence that spatial variation in threat can drive the...

  • Nevison C.D, Munro D.R, Lovenduski N.S, Keeling RF, Manizza M, Morgan E.J, Rodenbeck C.  2020.  Southern Annular Mode influence on wintertime ventilation of the Southern Ocean detected in atmospheric O-2 and CO2 measurements. 47
    Abstract Summary:

    The Southern Annular Mode (SAM) is the dominant mode of climate variability in the Southern Ocean, but only a few observational studies have linked variability in SAM to changes in ocean circulation. Atmospheric potential oxygen (APO) combines atmospheric O-2/N-2 and CO2 data to mask the influence of terrestrial exchanges, yielding a tracer that is sensitive mainly to ocean circulation and biogeochemistry. We show that observed wintertime...

  • Stolerman L.M, Getz M., Smith SGL, Holst M., Rangamani P..  2020.  Stability analysis of a bulk-surface reaction model for membrane protein clustering. 82
    Abstract Summary:

    Protein aggregation on the plasma membrane (PM) is of critical importance to many cellular processes such as cell adhesion, endocytosis, fibrillar conformation, and vesicle transport. Lateral diffusion of protein aggregates or clusters on the surface of the PM plays an important role in governing their heterogeneous surface distribution. However, the stability behavior of the surface distribution of protein aggregates remains poorly...

  • Ryoo J.M, Chiao S., Spackman J.R, Iraci L.T, Ralph FM, Martin A., Dole R.M, Marrero J.E, Yates E.L, Bui T.P et al..  2020.  Terrain trapped airflows and precipitation variability during an atmospheric river event. 21:355-375.
    Abstract Summary:

    We examine thermodynamic and kinematic structures of terrain trapped airflows (TTAs) during an atmospheric river (AR) event impacting Northern California 10-11 March 2016 using Alpha Jet Atmospheric eXperiment (AJAX) aircraft data, in situ observations, and Weather and Research Forecasting (WRF) Model simulations. TTAs are identified by locally intensified low-level winds flowing parallel to the coastal ranges and having maxima over the near-...

  • Abstract Summary:

    We generate and tabulate reflectance values of the Stokes parameters I, Q and U of upwelling radiance just above a rough ocean surface and at the top of the atmosphere (TOA) for 100 scattering geometries, four atmosphere-ocean systems, and four wavelengths. The atmosphere-ocean systems increase in complexity from (a) a molecular atmosphere above a rough ocean surface (AOS-I model); to (b) a pure water body below a rough ocean surface (AOS-II...

  • Abstract Summary:

    The outer Wiring Basin, Norwegian Sea, is an abnormally deep and distal part of the Norwegian passive margin, known as "magma-rich". Yet, the lastest borehole drilled in its northernmost part led to a drastic change in the interpretation of seismic reflection data. This update motivates a new model for the entire Mesozoic-Eocene rifting period. Here I evaluate the link between tectonics, serpentinization and magmatism in the Norwegian margin...

  • Hutchings N., Kilpatrick T., Long D.G.  2020.  Ultrahigh resolution scatterometer winds near Hawaii. 12
    Abstract Summary:

    Hawaii regional climate model (HRCM), QuikSCAT, and ASCAT wind estimates are compared in the lee of Hawaii's Big Island with the goal of understanding ultrahigh resolution (UHR) scatterometer wind retrieval capabilities in this area, which includes a reverse-flow toward the island in the lee of the predominate flow. A comparison of scatterometer measured sigma 0 and model predicted sigma 0 suggests that scatterometers can detect the reverse...

  • Shroyer E.L, Gordon A.L, Jaeger G.S, Freilich M., Waterhouse A.F, Farrar J.T, Sarma V, Venkatesan R., Weller RA, Moum J.N et al..  2020.  Upper layer thermohaline structure of the Bay of Bengal during the 2013 northeast monsoon. 172
    Abstract Summary:

    The Bay of Bengal is forced by the South Asian monsoon and associated seasonally reversing winds and freshwater fluxes. Here, we summarize a high-resolution, basin-wide survey of the Bay of Bengal conducted during the 2013 northeast (winter) monsoon. The observed mixed layer waters were sourced from the eastern Bay; and, generally, the upper ocean temperature-salinity properties followed regional trends as determined by Argo. Intense lateral...

  • Geyer F., Sagen H., Cornuelle B., Mazloff MR, Vazquez H.J.  2020.  Using a regional ocean model to understand the structure and variability of acoustic arrivals in Fram Strait. 147:1042-1053.
    Abstract Summary:

    A regional ocean model for Fram Strait provides a framework for interpretation of the variability and structure of acoustic tomography arrivals. The eddy-permitting model (52 vertical levels and 4.5 km horizontal resolution) was evaluated using long-term moored hydrography data and time series of depth-range averaged temperature obtained from the inversion of acoustic tomography measurements. Geometric ray modeling using the ocean model...

  • Yamada Y., Guillemette R., Baudoux A.C, Patel N., Azam F.  2020.  Viral attachment to biotic and abiotic surfaces in seawater. 86
    Abstract Summary:

    Viruses influence microbial community structure and biogeochemical cycles in marine environments. Viral attachment to nonhost surfaces could influence host viral infection rates; however, the prevalence of such viral attachment is not investigated quantitatively. We used coastal seawater viral assemblages and, as models, marine vibriophage (SIO-2) and enterobacteriophages (T2 and T4) to investigate their attachment to probable nonhost marine...

  • Lobs N., Barbosa C.GG, Brill S., Walter D., Ditas F., Sa M.D, de Araujo A.C, de Oliveira L.R, Godoi R.HM, Wolff S. et al..  2020.  Aerosol measurement methods to quantify spore emissions from fungi and cryptogamic covers in the Amazon. 13:153-164.
    Abstract Summary:

    Bioaerosols are considered to play a relevant role in atmospheric processes, but their sources, properties, and spatiotemporal distribution in the atmosphere are not yet well characterized. In the Amazon Basin, primary biological aerosol particles (PBAPs) account for a large fraction of coarse particulate matter, and fungal spores are among the most abundant PBAPs in this area as well as in other vegetated continental regions. Furthermore,...

  • Abstract Summary:

    In Tasmania (Australia), during the marine phase, it has been observed that flesh pigmentation significantly drops in summer, possibly due to high water temperatures (> 20 degrees C). Although this deleterious effect of summer temperatures has been ascertained, there is a lack of knowledge of the actual mechanisms behind the impaired uptake and/or loss of pigments in Atlantic salmon in a challenging environment. Since the microbial...

  • Abstract Summary:

    Exposure to and colonization by bacteria during development have wide-ranging beneficial effects on animal biology but can also inhibit growth or cause disease. The immune system is the prime mediator of these microbial interactions and is itself shaped by them. Studies using diverse animal taxa have begun to elucidate the mechanisms underlying the acquisition and transmission of bacterial symbionts and their interactions with developing...

  • Harding A.R, Ricke K., Heyen D., MacMartin D.G, Moreno-Cruz J..  2020.  Climate econometric models indicate solar geoengineering would reduce inter-country income inequality. 11
    Abstract Summary:

    Exploring heterogeneity in the economic impacts of solar geoengineering is a fundamental step towards understanding the risk tradeoff associated with a geoengineering option. To evaluate impacts of solar geoengineering and greenhouse gas-driven climate change on equal terms, we apply macroeconomic impact models that have been widely applied to climate change impacts assessment. Combining historical evidence with climate simulations of mean...

  • Song S.J, Sanders J.G, Delsuc F., Metcalf J., Amato K., Taylor M.W, Mazel F., Lutz H.L, Winker K., Graves G.R et al..  2020.  Comparative analyses of vertebrate gut microbiomes reveal convergence between birds and bats. 11
    Abstract Summary:

    Diet and host phylogeny drive the taxonomic and functional contents of the gut microbiome in mammals, yet it is unknown whether these patterns hold across all vertebrate lineages. Here, we assessed gut microbiomes from similar to 900 vertebrate species, including 315 mammals and 491 birds, assessing contributions of diet, phylogeny, and physiology to structuring gut microbiomes. In most nonflying mammals, strong correlations exist between...

  • Stock B.C, Ward E.J, Eguchi T, Jannot J., Thorson J.T, Feist B.E, Semmens B.X.  2020.  Comparing predictions of fisheries bycatch using multiple spatiotemporal species distribution model frameworks. 77:146-163.
    Abstract Summary:

    Spatiotemporal predictions of bycatch (i.e., catch of nontargeted species) have shown promise as dynamic ocean management tools for reducing bycatch. However, which spatiotemporal model framework to use for generating these predictions is unclear. We evaluated a relatively new method, Gaussian Markov random fields (GMRFs), with two other frameworks, generalized additive models (GAMs) and random forests. We fit geostatistical delta-models to...

  • Abstract Summary:

    Some high-resolution CTD data collected in the spring of 2017 are analyzed using Thorpe sorting and scale analyses, including both the commonly used "Thorpe scale" method and a lesser-used method that is based on directly estimating the "available overturn potential energy" (AOPE): the difference between potential energies of the raw versus sorted density profiles in a mixing "turbulent patch." The speed of the profiler varied, so the spatial...

  • Skarsoulis E.K, Cornuelle BD.  2020.  Cross-correlation sensitivity kernels with respect to noise source distribution. 147:1-9.
    Abstract Summary:

    The cross correlation of the underwater noise field recorded at two receivers conveys information about the time-domain Green's function between the two locations, provided that sufficient energy is channeled into the acoustic paths connecting these. The efficiency of this procedure depends on the locations and characteristics of the receivers and noise sources, as well as on the refraction properties of the ocean sound channel. The...

  • Grimes D.J, Feddersen F, Giddings S.N, Pawlak G..  2020.  Cross-shore deformation of a surfzone-released dye plume by an internal tide on the inner shelf. 50:35-54.
    Abstract Summary:

    An inner-shelf (IS) dye plume that formed following a 3.84-h early morning surfzone (SZ) dye release off of Imperial Beach, California, is analyzed with in situ and aerial remotely sensed observations. Midmorning, 5 h after release start, the IS plume extended 800 m offshore (or approximate to 8L(sz), where L-sz is the surfzone width) and was surface intensified. Over the next approximate to 2 h, the IS plume deformed (narrowed) cross-shore...

  • Solsona-Berga A., Frasier K.E, Baumann-Pickering S., Wiggins SM, Hildebrand JA.  2020.  DetEdit: A graphical user interface for annotating and editing events detected in long-term acoustic monitoring data. 16
    Abstract Summary:

    Passive acoustic monitoring has become an important data collection method, yielding massive datasets replete with biological, environmental and anthropogenic information. Automated signal detectors and classifiers are needed to identify events within these datasets, such as the presence of species-specific sounds or anthropogenic noise. These automated methods, however, are rarely a complete substitute for expert analyst review. The ability...

  • Harvey M.E, Giddings S.N, Stein E.D, Crooks J.A, Whitcraft C., Gallien T., Largier J.L, Tiefenthaler L., Meltzer H., Pawlak G. et al..  2020.  Effects of elevated sea levels and waves on Southern California estuaries during the 2015-2016 El Nino.
    Abstract Summary:

    The 2015-2016 El Nino provided insight into how low-inflow estuaries might respond to future climate regimes, including high sea levels and more intense waves. High waves and water levels coupled with low rainfall along the Southern California coastline provided the opportunity to examine how extreme ocean forcing impacts estuaries independently from fluvial events. From November 2015 to April 2016, water levels were measured in 13 Southern...

  • Long S.M, Xie SP, Du Y., Liu QY, Zheng XT, Huang G, Hu KM, Ying J..  2020.  Effects of ocean slow response under low warming targets. 33:477-496.
    Abstract Summary:

    The 2015 Paris Agreement proposed targets to limit global-mean surface temperature (GMST) rise well below 2 degrees C relative to preindustrial level by 2100, requiring a cease in the radiative forcing (RF) increase in the near future. In response to changing RF, the deep ocean responds slowly (ocean slow response), in contrast to the fast ocean mixed layer adjustment. The role of the ocean slow response under low warming targets is...

  • Yi J.S, Yoo H.W, Kim E.J, Yang Y.H, Kim B.G.  2020.  Engineering Streptomyces coelicolor for production of monomethyl branched chain fatty acids. 307:69-76.
    Abstract Summary:

    Branched chain fatty acids (BCFA) are an appealing biorefinery-driven target of fatty acid (FA) production. BCFAs typically have lower melting points compared to straight chain FAs, making them useful in lubricants and biofuels. Actinobacteria, especially Streptomyces species, have unique secondary metabolism that are capable of producing not only antibiotics, but also high percentage of BCFAs in their membrane lipids. Since biosynthesis of...

  • Abstract Summary:

    The autonomous passive-acoustic lander Deep Sound was deployed at five locations during the Office of Naval Research (ONR)-supported Seabed Characterization Experiment, a multi-institutional field effort held at the New England Mud Patch, where the seabed is known to consist of a thick layer of silt and clay overlying a medium and coarse sand. The five deployments of Deep Sound were up to 9h long, during which time ambient noise data, taken...

  • O'Rourke A., Zoumplis A., Wilburn P., Lee M.D, Lee Z., Vecina M., Mercader K..  2020.  Following the astrobiology roadmap: Origins, habitability and future exploration. 38:1-31.
    Abstract Summary:

    Astrobiology asks three fundamental questions as outlined by the NASA Astrobiology Roadmap: 1. How did Life begin and evolve?; Is there Life elsewhere in the Universe?; and, What is the future of Life on Earth? As we gain perspective on how Life on Earth arose and adapted to its many niches, we too gain insight into how a planet achieves habitability. Here on Earth, microbial Life has evolved to exist in a wide range of habitats from aquatic...

  • Sharma A., Das P., Buschmann M., Gilbert J.A.  2020.  The future of microbiome-based therapeutics in clinical applications. 107:123-128.
    Abstract Summary:

    The microbiome, a collection of microorganisms, their genomes, and the surrounding environmental conditions, is akin to a human organ, and knowledge is emerging on its role in human health and diseases. The influence of the microbiome in drug response has only been investigated in detail for the last 10 years. The human microbiome is a complex and highly dynamic system, which varies dramatically between individuals, yet there exists a common...

  • Neely W.R, Borsa A.A, Silverii F..  2020.  GInSAR: A cGPS correction for enhanced InSAR time series. 58:136-146.
    Abstract Summary:

    Earth surface displacements from interferometric synthetic aperture radar (InSAR) have long been used to study deformation from a wide range of geophysical processes. Whereas deformation rates can be robustly estimated from InSAR by averaging many individual deformation observations, noise in these observations has limited their utility for generating deformation time series. In this article, we introduce a novel combination of InSAR and...

  • Lindner F., Walter F., Laske G., Gimbert F..  2020.  Glaciohydraulic seismic tremors on an Alpine glacier. 14:287-308.
    Abstract Summary:

    Hydraulic processes impact viscous and brittle ice deformation. Water-driven fracturing as well as turbulent water flow within and beneath glaciers radiate seismic waves which provide insights into otherwise hard-to-access englacial and subglacial environments. In this study, we analyze glaciohydraulic tremors recorded by four seismic arrays installed in different parts of Glacier de la Plaine Morte, Switzerland. Data were recorded during the...

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