35 real negative results, null findings, and replication failures in Earth and Planetary Sciences. Search the index →
WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record compiled from open scholarly databases; the abstract is shown in full only where the paper is openly licensed, otherwise a short excerpt under fair use. Classifications are automated and approximate.
Chris Derksen, Ross Brown · 2012 · Geophysical Research Letters
Analysis of Northern Hemisphere spring terrestrial snow cover extent (SCE) from the NOAA snow chart Climate Data Record (CDR) for the April to June period (when snow cover is mainly located over the Arctic) has revealed statistically…
View details →Owen R. Cooper, R. S. Gao, D. W. Tarasick et al. · 2012 · Journal of Geophysical Research Atmospheres
This analysis provides an up‐to‐date assessment of long‐term (1990–2010) rural ozone trends using all available data in the western (12 sites) and eastern (41 sites) USA. Rather than focus solely on average ozone values or air quality…
View details →Sarah S. T. Mak, Shyam Gopalakrishnan, Christian Carøe et al. · 2017 · GigaScience
Ancient DNA research has been revolutionized following development of next-generation sequencing platforms. Although a number of such platforms have been applied to ancient DNA samples, the Illumina series are the dominant choice today, mainly because of high production capacities and short read production. Recently a potentially attractive alternative platform for palaeogenomic data generation has been developed, the BGISEQ-500, whose sequence output are comparable with the Illumina series. In this study, we modified the standard BGISEQ-500 library preparation specifically for use on degraded
View details →Kenneth E. Kunkel, David R. Easterling, David A. R. Kristovich et al. · 2012 · Journal of Hydrometeorology
Abstract Daily extreme precipitation events, exceeding a threshold for a 1-in-5-yr occurrence, were identified from a network of 935 Cooperative Observer stations for the period of 1908–2009. Each event was assigned a meteorological cause,…
View details →Jessica E. Tierney, Martin P. Tingley · 2018 · Paleoceanography and Paleoclimatology
Abstract The alkenone‐based U proxy is a cornerstone of paleoclimatology, providing insight into the temperature history of the Earth's surface ocean. Although the relationship between U and sea surface temperatures (SSTs) is robust and…
View details →Eric A. Hendricks, Melinda S. Peng, Bing Fu et al. · 2010 · Monthly Weather Review
Abstract Composite analysis is used to examine environmental and climatology and persistence characteristics of tropical cyclones (TCs) undergoing different intensity changes in the western North Pacific (WPAC) and North Atlantic (ATL)…
View details →K. Wyat Appel, George Pouliot, Heather Simon et al. · 2013 · Geoscientific model development
Abstract. The Community Multiscale Air Quality (CMAQ) model is a state-of-the-science air quality model that simulates the emission, transformation, transport, and fate of the many different air pollutant species that comprise particulate matter (PM), including dust (or soil). The CMAQ model version 5.0 (CMAQv5.0) has several enhancements over the previous version of the model for estimating the emission and transport of dust, including the ability to track the specific elemental constituents of dust and have the model-derived concentrations of those elements participate in chemistry. The late
View details →Allison L. Steiner, Adam J. Davis, Sanford Sillman et al. · 2010 · Proceedings of the National Academy of Sciences
Ground level ozone concentrations ([O(3)]) typically show a direct linear relationship with surface air temperature. Three decades of California measurements provide evidence of a statistically significant change in the ozone-temperature…
View details →Frédéric Satgé, Dimitri Defrance, Benjamin Sultan et al. · 2019 · Journal of Hydrology
This study aims reporting on 23 gridded precipitation datasets (P-datasets) reliability across West Africa through direct comparisons with rain gauges measurement at the daily and monthly time scales over a 4 years period (2000–2003). All…
View details →Gil Rilov · 2016 · Scientific Reports
Even during the current biodiversity crisis, reports on population collapses of highly abundant, non-harvested marine species were rare until very recently. This is starting to change, especially at the warm edge of species' distributions where populations are more vulnerable to stress. The Levant basin is the southeastern edge of distribution of most Mediterranean species. Coastal water conditions are naturally extreme, and are fast warming, making it a potential hotspot for species collapses. Using multiple data sources, I found strong evidence for major, sustained, population collapses of t
View details →Martín D. Ezcurra, Federico L. Agnolín · 2011 · Systematic Biology
Late Mesozoic palaeobiogeography has been characterized by a distinction between the northern territories of Laurasia and the southern landmasses of Gondwana. The repeated discovery of Gondwanan lineages in Laurasia has led to the proposal…
View details →Colin M. Sayers · 2013 · Geophysics
ABSTRACT The elastic properties of reservoir rocks are important for geomechanics applications; the most important of which are: analysis of stress changes due to production, analysis of rock deformation and failure, wellbore trajectory…
View details →Alexis Licht, Christian France‐Lanord, Laurie Reisberg et al. · 2013 · Journal of the Geological Society
Strain resulting from the collision of India with Asia has caused fundamental changes to Asian drainage patterns, but the timing and nature of these changes are poorly understood. One frequently proposed hypothesis involves the connection of the palaeo Tsangpo drainage to a precursor to the Irrawaddy River of central Myanmar in the Palaeogene. To test this hypothesis, we studied the provenance of Palaeogene fluvio-clastic sedimentary rocks that crop out in central Myanmar, namely the Late Middle Eocene–Early Oligocene Pondaung and Yaw Formations. Isotopic analysis on bulk-rock and petrographic
View details →Marina Nasri Sissini, Maria Beatriz Barbosa de Barros Barreto, Maria Teresa Menezes de Széchy et al. · 2017 · Phycologia
:This study represents the efforts of a network of researchers to characterise the large, floating Sargassum (Fucales, Phaeophyceae) biomass that had reached the Brazilian coast in 2014 and 2015. Material collected during these events was…
View details →Shunsuke Tei, Atsuko Sugimoto, Hitoshi Yonenobu et al. · 2017 · Global Change Biology
Circumboreal forest ecosystems are exposed to a larger magnitude of warming in comparison with the global average, as a result of warming-induced environmental changes. However, it is not clear how tree growth in these ecosystems responds…
View details →Qiang Wang, Claudia Wekerle, Sergey Danilov et al. · 2018 · Journal of Climate
Abstract The freshwater stored in the Arctic Ocean is an important component of the global climate system. Currently the Arctic liquid freshwater content (FWC) has reached a record high since the beginning of the last century. In this…
View details →Basheer A. Elubid, Tao Huang, Ekhlas H. Ahmed et al. · 2019 · International Journal of Environmental Research and Public Health
The observation of groundwater quality elements is essential for understanding the classification and distribution of drinking water. Geographic Information System (GIS) and remote sensing (RS), are intensive tools for the performance and analysis of spatial datum associated with groundwater sources control. In this study, groundwater quality parameters were observed in three different aquifers including: sandstone, alluvium and basalt. These aquifers are the primary source of national drinking water and partly for agricultural activity in El Faw, El Raha (Fw-Rh), El Qalabat and El Quresha (Qa
View details →K. V. Cashman · 2020 · Frontiers in Earth Science
Studies of magmatic systems have long used the textures of erupted samples to infer processes that control the location and duration of magma storage and drive volcanic eruptions from these storage regions. Models of volcanic processes and magmatic systems have evolved substantially over the past decades, in large part because of advances in analytical and experimental techniques. Cooling- and decompression-experiments have greatly enhanced our understanding of crystal textures produced by crystallization associated with volcanic eruptions, while advances in compositional mapping, isotopic ana
View details →Kaustubh Thirumalai, Julie N. Richey, Terrence M. Quinn et al. · 2014 · Scientific Reports
Planktic foraminifer Globigerinoides ruber (G. ruber), due to its abundance and ubiquity in the tropical/subtropical mixed layer, has been the workhorse of paleoceanographic studies investigating past sea-surface conditions on a range of…
View details →George B. McManus, Donald M. Schoener, Katharine Haberlandt · 2012 · Frontiers in Microbiology
Simultaneous use of both heterotrophic and autotrophic metabolism ("mixotrophy") is common among protists. Strombidium rassoulzadegani is a planktonic mixotrophic marine ciliate that saves chloroplasts from its algal food and obtains a nutritional subsidy via photosynthesis. Cultures from the northeast, northwest, and southwest Atlantic Ocean show similar numerical response parameters (maximum growth rate, food concentration at which growth is half its maximum, and threshold food concentration for growth), and some isolates have been maintained in vitro for over 3 years. This ciliate grows equ
View details →Yoshihiro Nakayama, Dimitris Menemenlis, Michael Schodlok et al. · 2017 · Journal of Geophysical Research Oceans
Abstract Recent studies suggest that the thickness of Winter Water (WW), that is, water with potential temperature below ∼−1°C located below Antarctic Surface Water and above Circumpolar Deep Water (CDW) is critical in determining the ice…
View details →Alexis Rojas, Pedro Patarroyo, Liang Mao et al. · 2017 · Geology
Large-scale biogeographic provinces of Cretaceous ammonoids, as currently defined in the literature, were delimited using qualitative assessments of taxonomic inventories. Using aggregated species occurrences in the Paleobiology Database, we generated a geographic network to quantify connectivity of Albian epicontinental basins and used the flow-based Infomap algorithm to delineate bioprovinces. Despite taxonomic, stratigraphic, and geographic limitations of the data, the Infomap bioprovinces are largely concordant with the traditional, qualitatively derived biogeographic model, including the
View details →Walter Acevedo, Bijan Fallah, Sebastian Reich et al. · 2017 · Climate of the past
Abstract. Paleoclimate data assimilation (DA) is a promising technique to systematically combine the information from climate model simulations and proxy records. Here, we investigate the assimilation of tree-ring-width (TRW) chronologies into an atmospheric global climate model using ensemble Kalman filter (EnKF) techniques and a process-based tree-growth forward model as an observation operator. Our results, within a perfect-model experiment setting, indicate that the "online DA" approach did not outperform the "off-line" one, despite its considerable additional implementation complexity. On
View details →Suzanne Birner, Elizabeth Cottrell, J. M. Warren et al. · 2021 · Earth and Planetary Science Letters
Mid-ocean ridge peridotites record significantly greater variability in major and trace elements, isotopic compositions, and thermodynamic properties such as oxygen fugacity (fO2) than do their basaltic counterparts. This variability may derive from modern ridge processes related to melting and melt-rock interaction or from long-lived source heterogeneity related to recycled material or ancient melting events. In this study, we investigate variations in spinel geochemistry as well as silicate major and trace element chemistry and oxygen fugacity of a suite of peridotites from a single segment
View details →Sandip Pal, Temple R. Lee · 2019 · Geophysical Research Letters
Abstract The complexities in the atmospheric boundary layer depth (BLD) features over coastal regions pose challenges for meteorological forecasts, air quality, greenhouse gas mixing and transport, and wind energy production. Here, for the…
View details →E. M. Dunne, Lindsay Lee, Carly Reddington et al. · 2012 · Atmospheric chemistry and physics
Abstract. Observed correlations between short-term decreases in cosmic ray ionisation and cloud and aerosol properties have been attributed to short-term decreases in the ion-induced nucleation rate. We use a global aerosol microphysics model to determine whether a 10 day reduction of 15% in the nucleation rate could generate a statistically significant response in aerosol concentrations and optical properties. As an upper limit to the possible effect of changes in ion-induced nucleation rate, we perturb the total nucleation rate, which has been shown to generate particle concentrations and nu
View details →Aliasghar Azma, Yakun Liu, Eden Tatek Alemu · 2026 · Scientific Reports
The aim of this study was to evaluate groundwater quality the Marvdasht aquifer using the Groundwater Quality Index (GWQI), which was determined using a conventional method and also predicted using three machine learning algorithms:…
View details →Stephen J. Tomasetti, Jeffrey R. Kraemer, Christopher J. Gobler · 2021 · Frontiers in Marine Science
Many shallow coastal systems experience diel fluctuations in dissolved oxygen (DO) and pH that can intensify throughout the summer season and expose estuarine organisms to repeated episodes of coastal hypoxia and acidification. In temperate regions, larval release of the economically important blue crab Callinectes sapidus occurs in the summer, and while the earliest stage (zoea I) larvae are susceptible to persistent low DO and low pH conditions, their sensitivity to diel fluctuations is unknown. Here, a series of short-term (≤96 h) experiments were conducted to investigate the survival of C.
View details →Yayaati Chachan, Jonathan J. Fortney, Kazumasa Ohno et al. · 2025 · The Astrophysical Journal
Abstract The rate at which giant planets accumulate solids and gas is a critical component of planet formation models, yet it is extremely challenging to predict from first principles. Characterizing the heavy element (everything other than hydrogen and helium) content of giant planets provides important clues about their provenance. Using thermal evolution models with an updated H–He equation of state and atmospheric boundary conditions that vary with envelope metallicity, we quantify the bulk heavy element content of 147 warm (<1000 K) giant planets with well-measured masses and radii, mo
View details →Xavier A. Jenkins, Roger Benson, David P. Ford et al. · 2025 · Peer Community Journal
Living reptiles include more than 20,000 species with disparate ecologies. Direct anatomical evidence from Neodiapsida, which includes the reptile crown-group and its closest extinct relatives, shows that this diversity originates from a single common ancestor that lived over 255 million years ago in the Paleozoic. However, the evolutionary assembly of crown reptile traits is poorly understood due to the lack of anatomically close relatives of Neodiapsida. We present a substantially revised phylogenetic hypothesis, informed by new anatomical data from high-resolution synchrotron tomography of
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