A5032291937- Geophysics and Gravity Measurements
- Geology and Paleoclimatology Research
- Cryospheric studies and observations
- Oceanographic and Atmospheric Processes
- Climate variability and models
- Arctic and Antarctic ice dynamics
- Coastal and Marine Dynamics
- Methane Hydrates and Related Phenomena
- earthquake and tectonic studies
- Scientific Research and Discoveries
- Statistical and numerical algorithms
- Landslides and related hazards
- Flood Risk Assessment and Management
- Geological and Geophysical Studies
- Atmospheric and Environmental Gas Dynamics
- Time Series Analysis and Forecasting
- Maritime and Coastal Archaeology
- Geological formations and processes
- Coastal and Marine Management
- Computational Drug Discovery Methods
- Isotope Analysis in Ecology
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Groundwater and Isotope Geochemistry
- Metabolomics and Mass Spectrometry Studies
Boston College
2017-2023
Planetary Science Institute
2014-2019
Harvard University
2014-2019
McGill University
2019
Columbia University
2019
Rutgers, The State University of New Jersey
2015-2017
University of New Hampshire
2017
Wisconsin Disability Association
2016
Rutgers Sexual and Reproductive Health and Rights
2015
Rütgers (Germany)
2015
Significance We present the first, to our knowledge, estimate of global sea-level (GSL) change over last ∼3,000 years that is based upon statistical synthesis a database regional reconstructions. GSL varied by ∼±8 cm pre-Industrial Common Era, with notable decline 1000–1400 CE coinciding ∼0.2 °C cooling. The 20th century rise was extremely likely faster than during any 27 previous centuries. Semiempirical modeling indicates that, without warming, in very would have risen between −3 and +7...
Mechanisms such as ice-shelf hydrofracturing and ice-cliff collapse may rapidly increase discharge from marine-based ice sheets. Here, we link a probabilistic framework for sea-level projections to small ensemble of Antarctic ice-sheet (AIS) simulations incorporating these physical processes explore their influence on global-mean (GMSL) relative (RSL). We compare the new past results using expert assessment structured elicitation about AIS changes. Under high greenhouse gas emissions...
Future sea-level rise generates hazards for coastal populations, economies, infrastructure, and ecosystems around the world. The projection of future relies on an accurate understanding mechanisms driving its complex spatio-temporal evolution, which must be founded history. We review current methodologies data sources used to reconstruct history change over geological (Pliocene, Last Interglacial, Holocene) instrumental (tide-gauge satellite alimetry) eras, tools project spatial temporal...
The rapid melting of the Earth′s ice reservoirs will produce geographically distinct patterns sea level change that have come to be known as fingerprints. A basic, gravitationally self-consistent theory for computing these appeared in 1970s; however, recent, highly discrepant fingerprint calculations led suggestions algorithms and/or theoretical implementation adopted many previous predictions is not robust. We present a suite numerical predictions, including benchmark comparisons with...
Local sea-level changes differ significantly from global-mean change as a result of (1) non-climatic, geological background processes; (2) atmosphere/ocean dynamics; and (3) the gravitational, elastic, rotational "fingerprint" effects ice ocean mass redistribution. Though research communities working on these different each have long history, integration all processes into interpretations past projections future is an active area research. Fully characterizing contributions requires...
Abstract Sea level fingerprints associated with rapid melting of the West Antarctic Ice Sheet (WAIS) have generally been computed under assumption a purely elastic response solid Earth. The authors investigate impact viscous effects on these by computing gravitationally self-consistent sea changes that adopt 3D viscoelastic Earth model in region consistent available geological and geophysical constraints. In Antarctica, is characterized thin (~65 km) lithosphere sublithospheric viscosities...
Reanalysis of Earth rotation observations reconciles them with globally averaged sea-level change in the 20th century.
Abstract The West Antarctic Ice Sheet (WAIS) overlies a thin, variable-thickness lithosphere and shallow upper-mantle region of laterally varying and, in some regions, very low (~10 18 Pa s) viscosity. We explore the extent to which viscous effects may affect predictions present-day geoid crustal deformation rates resulting from ice mass flux over last quarter century project these calculations into next half century, using viscoelastic Earth models complexity. Peak at end 25-yr simulation...
Greenland has a major influence on the atmospheric circulation of North Atlantic-western European region, dictating location and strength mesoscale weather systems around coastal seas directly influencing synoptic-scale both locally downstream over Europe. High winds associated with local can induce large air-sea fluxes heat, moisture, momentum in region that is critical to overturning thermohaline circulation, thus play key role controlling coupled atmosphere-ocean climate system. The Flow...
A rapidly melting ice sheet produces a distinctive geometry, or fingerprint, of sea level (SL) change. Thus, network SL observations may, in principle, be used to infer sources meltwater flux. We outline formalism, based on modified Kalman smoother, for using tide gauge estimate the individual global also report series detection experiments synthetic data that explore feasibility extracting source information from records. The smoother technique iteratively calculates maximum-likelihood...
Abstract It has been known for over a century that the melting of individual ice sheets and glaciers drives distinct geographic patterns, or fingerprints, sea level change, recent studies have highlighted implications this variability hazard assessment inferences meltwater sources. These computed fingerprints using simplified melt geometries; however, more generalized treatment would be advantageous when assessing projecting hazards in face quickly evolving patterns mass flux. In paper usual...
Research Article| March 22, 2019 A library of early Cambrian chemostratigraphic correlations from a reproducible algorithm Carling C. Hay; Hay 1Department Earth and Environmental Sciences, Boston College, Chestnut Hill, Massachusetts 02467, USA Search for other works by this author on: GSW Google Scholar Jessica R. Creveling; Creveling 2College Earth, Ocean, Atmospheric Oregon State University, Corvallis, 97330, Cedric J. Hagen; Hagen Adam Maloof; Maloof 3Department Geosciences, Princeton...
Estimates of regional and global average sea level change remain a focus climate research. One complication in obtaining coherent estimates is that geodetic datasets measure different aspects the field. Satellite altimetry constrains changes surface height (SSH; or absolute level), whereas tide gauge data provide SSH relative to crust (i.e., level). The latter direct ocean volume (and combined impacts ice sheet melt steric effects), but former not since it does account for crustal...
The artificial impoundment of water behind dams causes global mean sea level (GMSL) to fall as reservoirs fill but also generates a local rise in due the increased mass reservoir and crustal deformation this induces. To estimate spatiotemporal fluctuations impoundment, we use historical data set that includes 6,329 completed between 1900 2011, well projections 3,565 are expected be by 2040. GMSL change associated with (-0.2 mm yr
Global mean sea level (GMSL) over the twentieth century has been estimated using techniques that include regional averaging of sparse tide gauge observations, combining satellite altimetry observations with records in empirical orthogonal function (EOF) analyses, and most recently Bayesian approaches Kalman smoothing (KS) Gaussian process regression (GPR). Estimated trends GMSL 1901–90 obtained are 1.1–1.2 mm yr −1 , approximately 20% lower than previous estimates. It suggested adoption a...