Large contribution from anthropogenic warming to an emerging North American megadrought

  title={Large contribution from anthropogenic warming to an emerging North American megadrought},
  author={A. Park Williams and Edward R. Cook and Jason E. Smerdon and Benjamin I. Cook and John T. Abatzoglou and Kasey Bolles and Seung H. Baek and Andrew M. Badger and Ben Livneh},
  pages={314 - 318}
A trend of warming and drying Global warming has pushed what would have been a moderate drought in southwestern North America into megadrought territory. Williams et al. used a combination of hydrological modeling and tree-ring reconstructions of summer soil moisture to show that the period from 2000 to 2018 was the driest 19-year span since the late 1500s and the second driest since 800 CE (see the Perspective by Stahle). This appears to be just the beginning of a more extreme trend toward… 
Analysis of Surface Water Trends for the Conterminous United States Using MODIS Satellite Data, 2003–2019
Satellite imagery is commonly used to map surface water extents over time, but many approaches yield discontinuous records resulting from cloud obstruction or image archive gaps. We applied the
Water balance of the turn-of-the-century drought in the Southwestern United States
Analysis of the water balance of the southwestern United States (SWUS) during 1900 through 2018 was used to evaluate the magnitude of the turn-of-the-century (TOC) drought in the SWUS. Results
Soil moisture response to seasonal drought conditions and post‐thinning forest structure
Prolonged drought conditions in semi‐arid forests can lead to widespread vegetation stress and mortality. However, the distribution of these effects is not spatially uniform. We measured soil water
Ecological forecasting of tree growth: Regional fusion of tree‐ring and forest inventory data to quantify drivers and characterize uncertainty
This first fusion of tree-ring and forest inventory data within a Bayesian state-space model at a multi-site, regional scale is presented, laying the foundation for robust ecological forecasting of aboveground biomass and carbon accounting at tree, plot, and regional scales, including iterative improvement of model skill.
Advances in Land Surface Models and Indicators for Drought Monitoring and Prediction
Millions of people across the globe are affected by droughts every year, and recent droughts have highlighted the considerable agricultural impacts and economic costs of these events. Monitoring the
Phenotypic Responses of Sagebrush to the Southwestern North America Megadrought: A Genotype-by-Environment (GxE) Approach
Using nanofiltration membranes for the recovery of phosphorous with a second type of technology for the Recovery of nitrogen is suggest to be a viable process.
Placing the east-west North American aridity gradient in a multi-century context
Instrumental records indicate a century-long trend towards drying over western North America and wetting over eastern North America. A continuation of these trends into the future would have
Atmospheric River Precipitation Enhanced by Climate Change: A Case Study of the Storm That Contributed to California's Oroville Dam Crisis
An increasingly volatile hydroclimate increases California's reliance on precipitation from atmospheric rivers (ARs) for water resources. Here, we simulate the AR that contributed to the Oroville Dam
A lake sediment–based paleoecological reconstruction of late Holocene fire history and vegetation change in Great Basin National Park, Nevada, USA
Abstract Analyses of macroscopic charcoal, sediment geochemistry (%C, %N, C/N, δ13C, δ15N), and fossil pollen were conducted on a sediment core recovered from Stella Lake, Nevada, establishing a 2000
Twenty years of drought‐mediated change in snag populations in mixed‐conifer and ponderosa pine forests in Northern Arizona
Background Snags (standing dead trees) are important biological legacies in forest systems, providing numerous resources as well as a record of recent tree mortality. From 1997 to 2017, we monitored


Historical evolution of circuit models for the electrode-electrolyte interface
  • L. Geddes
  • Materials Science
    Annals of Biomedical Engineering
  • 2007
This paper chronicles the accumulation of knowledge about the electrode-electrolyte interface as a circuit element, which starts with the Helmholtz double layer of charge and progresses through the Warburg and Fricke lowcurrent-density models.
Mutational spectrum of Smith–Lemli–Opitz syndrome
  • H. WaterhamR. Hennekam
  • Biology, Medicine
    American journal of medical genetics. Part C, Seminars in medical genetics
  • 2012
Using information available from published case reports and from patients identified in the clinical diagnostic laboratory, correlations between genotype, clinical presentation and 7‐dehydrocholesterol level are analyzed.
Production of a mouse monoclonal antibody reactive with a human nuclear antigen associated with cell proliferation
A first series of immunostainings of tumour biopsies indicated that Ki‐67 may be a potent tool for easy and quick evaluation of the proportion of proliferating cells in a tumour.
Heterogeneous chip multiprocessors
Heterogeneous (or asymmetric) chip multiprocessors present unique opportunities for improving system throughput, reducing processor power, and mitigating Amdahl's law. On-chip heterogeneity allow the
Angular Position of the Cleat According to Torsional Parameters of the Cyclist's Lower Limb
Objective:The aim of this work was to study the relationship of torsional and rotational parameters of the lower limb with a specific angular position of the cleat to establish whether these
Colorado River flow dwindles as warming-driven loss of reflective snow energizes evaporation
A Monte Carlo simulation with a radiation-aware hydrologic model resolves the longstanding, wide disparity in sensitivity estimates and reveals the controlling physical processes behind increased evapotranspiration in the Colorado River.
Mid-latitude freshwater availability reduced by projected vegetation responses to climate change
Plants are expected to generate more global-scale runoff under increasing atmospheric carbon dioxide concentrations through their influence on surface resistance to evapotranspiration. Recent studies
Increased atmospheric vapor pressure deficit reduces global vegetation growth
The results highlight that the impacts of VPD on vegetation growth should be adequately considered to assess ecosystem responses to future climate conditions.
Observed Impacts of Anthropogenic Climate Change on Wildfire in California
Recent fire seasons have fueled intense speculation regarding the effect of anthropogenic climate change on wildfire in western North America and especially in California. During 1972–2018,
Geometric and structural river channel complexity and the prediction of urban inundation
Recent research modelling floodplain inundation processes has concentrated on issues surrounding the level of physical, topographical, and numerical solver complexity needed to represent floodplain