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1. Dynamics of Power Prices and Water Production in Los Angeles: Implications for Earthquake Resilience and Recovery

   Ewing, B. T. (January 2021, The Empirical economics letters)

   Abstract: This study examines the time-series properties of electric power prices and water production in Los Angeles, an area that is susceptible to earthquakes that may cause utility disruption. We focus on underlying stochastic properties of series that capture potential trends and cycles of critical infrastructure as measured by power price and water production. Specifically, the analysis utilizes a battery of time series-based unit root tests to determine whether or not average monthly electricity price and water production are stationary or nonstationary. The findings have implications regarding model specification and use of these series for modeling regional recovery, measuring and assessing resiliency, and in optimizing the risk management policies and practices of local utility authorities. The findings are discussed in the context of earthquakes but may provide some general insight for other natural disasters, as well. 

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2. Nanoscale soil-water retention curve of unsaturated clay via molecular dynamics

   https://doi.org/10.1051/e3sconf/202338210007  

   Zhang, Zhe; Song, Xiaoyu (January 2023, E3S Web of Conferences)

   Bardanis, M. (Ed.)

   This paper characterizes nanoscale soil-water retention mechanism of unsaturated clay through molecular dynamics simulation. Series of molecular dynamics simulations of clay at low degrees of saturation were conducted. Soil water was represented by a point cloud through the centre-of-massmethod. Water-air interface area was measured numerically by the alpha shape method. Spatial variation of water number density is characterized and used to determine the adsorbed water layer. The soil-water retention mechanism at the nanoscale was analysed by distinguishing adsorptive pressure and capillary pressure at different mass water contents and considering apparent interface area (water-air interface area per unit water volume). 

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3. TRISH: Tree-ring integrated system for hydrology, a web-based tool for reconstruction

   https://doi.org/10.1016/j.envsoft.2025.106590  

   Prusevich, Alexander A; Meko, David M; Panyushkina, Irina P; Shiklomanov, Alexander I; Lammers, Richard B; Glidden, Stanley J; Thaxton, Richard D (August 2025, Environmental Modelling & Software)

   TRISH (Tree-Ring Integrated System for Hydrology), a new web-based tool for reconstruction of water-balance variables from tree-ring proxies is described. The tool makes use of a mapping application, a global water balance model and R-based reconstruction software. Long time series of water balance variables can be reconstructed by regression or analog statistical methods from tree-ring data uploaded by the user or available in TRISH as previously uploaded public datasets. A predictand hydroclimatic time series averaged or summed over a river basin or arbitrary polygon can be generated interactively by clicking on the map. Control over reconstruction modeling includes optional lagging of predictors, transformation of predictand, and reduction of predictors by principal component analysis. Output includes displayed and downloadable graphics, statistics, and time series. The two-stage reconstruction approach in TRISH allows assessment of the strength of the hydroclimatic signal in individual chronologies in addition to providing a reconstruction based on the tree-ring network. TRISH facilitates the testing of sensitivity of reconstructions to modeling choices and allows a user to explore hydrologic reconstruction in ungauged basins. The R software for reconstruction is available for running offline in the RStudio development environment. TRISH is an open-science resource designed to be shared broadly across the Earth Science research community and to engage water resource management. 

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4. The effect of harbor developments on future high-tide flooding in Miami, Florida. Accompanying data.

   https://doi.org/10.5281/zenodo.6551549  

   De_Leo_Francesco (January 2022, Zenodo)

   List of available data: - Historical documents with tidal range measurements in the Biscayne Bay - Geo-referenced tif files of US Coast Survey chart no. 165 (1895) and NOAA US Coast Survey chart no. 11468 (2017) - Water level series projected through 2100 at the South Florida Water Management District gauge MRMS4 (mat files) 

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5. A Chlorophyll Biomass Time-Series for the Distributed Biological Observatory in the Context of Seasonal Sea Ice Declines in the Pacific Arctic Region

   https://doi.org/10.3390/geosciences12080307  

   Cooper, Lee W.; Grebmeier, Jacqueline M. (August 2022, Geosciences)

   Declines in seasonal sea ice in polar regions have stimulated projections of how primary production has shifted in response to greater light penetration over a longer open water season. Despite the limitations of remotely sensed observations in an often cloudy environment, remote sensing data provide strong indications that surface chlorophyll biomass has increased (since 2000) as sea ice has declined in the Pacific Arctic region. We present here shipboard measurements of chlorophyll-a that have been made annually in July since 2000 from the Distributed Biological Observatory (DBO) stations in the Bering Strait region. This time series as well as shipboard observations made in other months since the late 1980s implicate complexities that intrude on a simple expectation that, as open water periods increase, the production and biomass of phytoplankton will increase predictably. These shipboard observations indicate that there have not been sharp increases in chlorophyll-a, for either maxima observed in the water column or integrated over the whole water column, at the DBO stations over a time-series extending for as long as 20 years coinciding with seasonal sea ice declines. On the other hand, biomass may be increasing in other months: we provide a shipboard confirmation of a fall bloom in October as wind mixing introduced nutrients back into the upper water column. The productive DBO stations may be at a high enough production already that additional enhancements in chlorophyll-a biomass should not be expected, but our time-series record does not exclude the possibility that additional enhanced production may be present in other areas outside the DBO station grid. These findings may also reflect limitations imposed by nutrient cycling and water column structure. The increasing freshwater component of waters flowing through the Bering Strait is likely associated with increased stratification that limits the potential change in biological production associated with decreases in seasonal sea ice persistence. 

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