iiinova — where your digital self keeps evolving

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 12/03/2026

Hydrology Paper of the Day @kinarnicholas.bsky.social and colleagues on extending the range of the compensation heat pulse (CHP) method: the use of two probes in conjunction with novel mathematics; numerical and lab sand column experiments; and comparisons. www.sciencedirect.com/science/arti...

sciencedirect.com

Estimating low and reverse sap flux density with the temperature ratio heat pulse (TRHP) method

The compensation heat pulse (CHP) method is widely-used for monitoring sap flux density, but it has a limited measurement range and often underestimat…

093

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 11/03/2026

Hydrology Paper of the Day @vesnazupanc.bsky.social on engineered soils used to remediate lignite fly ash landfills: a study site in Slovenia; chemical and physical sampling; lab analyses indicating chemical changes over a 15 to 30-year period; and a framework for monitoring and measurement.

071

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 10/03/2026

Hydrology Paper of the Day @emde.science on understanding carbon changes in soils: a more precise definition of the concepts associated with carbon sequestration; understanding use of terminology in journals; loss mitigation and emissions; and climate change mitigation in the context of management.

091

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 09/03/2026

Hydrology Paper of the Day @christost.bsky.social @georgiapapachar.bsky.social on the Nash‑Sutcliffe loss: a measure with clear theoretical underpinnings, and the concept of Nash-Sutcliffe linear regression in context of an estimation framework in hydrology, machine learning and geosciences.

073

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 08/03/2026

Hydrology Paper of the Day @gescilam.bsky.social and colleagues on communication in an age of water scarcity: issues and challenges identified in conjunction with the scientific community at EGU24; data from interviews and surveys; and the need for trust, appropriate audiences, equity, and clarity

2138

Reposted by Georgia Papacharalampous

arXiv stat.ML Machine Learning @statml-bot.bsky.social · 03/03/2026

Hristos Tyralis, Georgia Papacharalampous: Learning with the Nash-Sutcliffe loss arxiv.org/abs/2603.00968 arxiv.org/pdf/2603.00968 arxiv.org/html/2603.00968

032

Reposted by Georgia Papacharalampous

ArXiv Paperboy (Stat.ME+Econ.EM) @paperposterbot.bsky.social · 03/03/2026

arXiv📈🤖 Learning with the Nash-Sutcliffe loss By Tyralis, Papacharalampous

$The Nash-Sutcliffe efficiency ($\text{NSE}$) is a widely used, positively oriented relative measure for evaluating forecasts across multiple time series. However, it lacks a decision-theoretic foundation for this purpose. To address this, we examine its negatively oriented counterpart, which we refer to as Nash-Sutcliffe loss, defined as $L_{\text{NS}} = 1 - \text{NSE}$. We prove that $L_{\text{NS}}$ is strictly consistent for an elicitable and identifiable multi-dimensional functional, which we name the Nash-Sutcliffe functional. This functional is a data-weighted component-wise mean. The common practice of maximizing the average NSE across multiple series is the sample analog of minimizing the expected $L_{\text{NS}}$. Consequently, this operation implicitly assumes that all series originate from a single non-stationary, stochastic process. We introduce Nash-Sutcliffe linear regression, a multi-dimensional model estimated by minimizing the average $L_{\text{NS}}$, which reduces to a data-weighted least squares formulation. By reorienting the sample average loss function, we extend the previously proposed evaluation and estimation framework to forecasting multiple stationary dependent time series with differing stochastic properties. This constitutes a more natural empirical implementation of the $\text{NSE}$ than the earlier formulation. Our results establish a decision-theoretic foundation for $\text{NSE}$-based model estimation and forecast evaluation in large datasets, while further clarifying the benefits of global over local machine learning models.$

032

Reposted by Georgia Papacharalampous

Gescilam Uchôa @gescilam.bsky.social · 06/03/2026

Happy to contribute to this community paper on science communication in hydrology within the IAHS HELPING decade. We propose the FUSS framework: messages should be Few, Unambiguous, Short, and Structured. Link to paper: www.tandfonline.com/doi/full/10.... #WaterScience #ScienceCommunication

062

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 04/03/2026

Hydrology Paper of the Day @hollykirk.bsky.social on a Nature-Water Design framework for ensuring urban and landscape design in the context of ecological services, systems, and climate change: a combination of frameworks; design principles; ensuring connectivity and stewardship; and five principles.

1117

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 05/03/2026

Hydrology Paper of the Day @grosseguido.bsky.social on how ice-wedges and permafrost are affected by fire on the Alaskan tundra: remote sensing image analyses; LIDAR surveys to obtain digital terrain models; polygonal terrain modelling by computational geometry and graphs; and network analyses.

0121

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 06/03/2026

Hydrology Paper of the Day @hydrologywsl.bsky.social on the HydCHeck screening tool for showing anthropogenic controls on rivers in Switzerland: assessment categories and a spider chart; application of the HYDMOD-F method for flow regimes to NAWA Catchment Areas; and a regional overview.

175

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 07/03/2026

Hydrology Paper of the Day @alexzivkovic.bsky.social on the films of Georges Méliès: explorations of water in the context of human understanding; an aquarium representation of hydrological processes and underwater worlds; real and imagined infrastructures; and artificial environments.

081

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 02/03/2026

Hydrology Paper of the Day @lytarasova.bsky.social on a framework that allows for an understanding of hydrological model performance and error analysis: explainable machine learning applied to modelling; data from 340 catchments in Germany; and calibration and validation of a rainfall-runoff model.

1125

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 03/03/2026

Hydrology Paper of the Day @gbrunohydro.bsky.social @manuelaibrunner.bsky.social on the hydrological processes of streamflow droughts in the Anthropocene: time scales, temporal changes, and identification; coupling with atmospheric and land-surface processes; soils and groundwater; and modelling.

185

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 28/02/2026

Hydrology Paper of the Day @mcmillanhydro.bsky.social on an overview of forested catchment-scale hydrology: the rarity and regularity of some processes; the importance of soils and antecedent soil moisture; preferential flow paths; and quantification of fluxes in the context of location.

0133

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 01/03/2026

Hydrology Paper of the Day @lindamariathompson.bsky.social on the illusion of natural flows at Nämforsen on the Ångermanälven River, Sweden: dams and the idea of water release to ensure place-marketing; exploring place through photography and film; dry riverbeds; and human-environmental control.

152

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 27/02/2026

Hydrology Paper of the Day @peatofmind.bsky.social on how mosses and lichens are affected by the hydrology of rock barren depressions and wetlands: soil moisture and biomass; moisture in lichens and mosses; productivity; and linkages between these environments and turtle nesting habitats.

082

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 25/02/2026

Hydrology Paper of the Day @catchmentsci.bsky.social on appraisal of the FOSS KLT-IV image velocimetry software to determine river surface velocity: experiments on the River Dart (Devon, UK); comparison with flow gauging data; calibration and processing pipelines; uncertainties; and applications.

1105

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 24/02/2026

Hydrology Paper of the Day @lmcampbell.bsky.social on reactive amendment remediation of wetlands with Hg and As gold mine tailings in Nova Scotia: design of a protective capping; testing on samples from the Muddy Pond Waverley Gold District; and physical and biological verification of remediation.

182

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 25/02/2026

Hydrology Paper of the Day @richard-fewster.bsky.social on quantifying how Arctic peatlands change due to global warming: 12 peatlands and transects in Europe and Canada; drone aerial surface photography and 91 soil monoliths; quantitative methods of dating; and how peatlands have expanded.

094

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 23/02/2026

Hydrology Paper of the Day @iceybethan.bsky.social on the hydroclimatology of the Antarctic Peninsula in the context of various warming scenarios: increasing surface melt and eventual ice shelf collapses under high warming scenarios; changes in biogeography; and a need to reduce global temperatures.

051

Reposted by Georgia Papacharalampous

HydrologyNL @hydrology.nl · 23/02/2026

Striking picture.

16813

Reposted by Georgia Papacharalampous

Daniele Penna @danielepenna.bsky.social · 07/01/2026

How do #climate, #antecedent #moisture, #soils, #topography, #geology, and #vegetation control #runoff #processes in #forested #catchments worldwide? Find this out here rdcu.be/eXTtd! @natwater.nature.com Thanks a lot @mcmillanhydro.bsky.social for this commentary www.nature.com/articles/s44...!

2173

Reposted by Georgia Papacharalampous

Nature Water @natwater.nature.com · 14/01/2026

A new Analysis in Nature Water by Daniele Penna @danielepenna.bsky.social performs a comprehensive study of 691 forested catchments worldwide examines the interplay of biotic and abiotic factors in runoff generation. www.nature.com/articles/s44...

nature.com

Client Challenge

174

Reposted by Georgia Papacharalampous

Daniele Penna @danielepenna.bsky.social · 28/01/2026

Somw fun with #discharge measurents today in the Re della Pietra #experimental #catchment danielepenna.wixsite.com/redellapietr... #rainfall #water #precipitation #forest #streamflow

091

Reposted by Georgia Papacharalampous

Daniele Penna @danielepenna.bsky.social · 20/02/2026

Thank you @ Marco Borga and Giulia Zuecco for inviting me to @unipd.bsky.social TESAF for a seminar on controls on #runoff #processes in #forested #catchments www.nature.com/articles/s44...

031

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 22/02/2026

Hydrology Paper of the Day @danielepenna.bsky.social on why trees cause soil to have a dual-permeability effect on forested hillslopes: processes of throughfall and stemflow; spatial scales and soil measurements in the Re della Pietra catchment of Italy; modelling; and geophysical observations.

0114

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 21/02/2026

Hydrology Paper of the Day @cambup-archaeology.cambridge.org on the water reservoirs and hydrology of Northern Belize during the Mayan empire: Indigenous civil engineering; urban forest gardens and spatial patterns of settlement; possible wetland management; and mapping drainage by LiDAR techniques.

082

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 17/02/2026

Hydrology Paper of the Day @forestecosyst.bsky.social on water use and plant traits in the karst landscapes of the Maolan Nature Reserve, Guizhou Province, China: gradients of biogeochemical cycles; numerical plant importance values; plant trait spectrums; and utilizing stable isotope analyses.

061

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 18/02/2026

Hydrology Paper of the Day @emde.science on how geographical properties affect agriculture in Germany: land use is mostly associated with hydrology; gridded datasets related to soils; application of conditional inference forest models for classification; and grassland-cropland site suitabilities.

091

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 19/02/2026

Hydrology Paper of the Day @iopp-environment.bsky.social on understanding the hydrology of the Okavango Delta, Botswana, Africa: water storage estimates from GRACE satellites; quantifying inundation from Landsat imagery; linkages related to precipitation and flood extent; and exploring variability

051

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 20/02/2026

Hydrology Paper of the Day @abhilashsingh.bsky.social suggested by @mlearthsciences.bsky.social on how satellite-based soil surface moisture estimates can be utilized to determine subsurface conditions: machine learning constraints of a physical model and comparisons via a global network.

171

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 16/02/2026

Hydrology Paper of the Day @harryfokkens.bsky.social on how water influenced human migration in the Lower Rhine–Meuse area of Europe: the role of rivers, wetlands, loess soils, coastlines and beaches in the context of hunting and farming; patterns of DNA; and the role of environmental constraints.

083

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 15/02/2026

Hydrology Paper of the Day @emilyfairfax.bsky.social on how beavers alter hydrological storage: pond dimensions and area; site-specific environmental variability; ecoregions and scaling relationships; and why ponds are smaller in the Southern Rockies compared to the Northwestern Glaciated Plains.

1228

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 11/02/2026

Hydrology Paper of the Day @agu-sensing.bsky.social on how coastal marshes are affected by changes in sea level: the Blackwater River marshes of Marysland; soil strength and biomass measurements; understanding tidal effects, soil mechanics and soil strength; and rates of tidal erosion.

094

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 11/02/2026

Hydrology Paper of the Day @jpgannon.bsky.social @hydrochrista.bsky.social @domciruzzi.bsky.social on understanding the teaching of hydrology at the undergraduate level: course titles, assessments, and objectives; textbooks and grading; and the need for shared educational resources and objectives.

0103

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 13/02/2026

Hydrology Paper of the Day @carlietrott.bsky.social on the Capitalocene and the psychology of politics and climate change: human power, profit, and systems; spatiotemporal patterns of risk in the context of corporate behavior; climate change; governments; and human-environmental connections.

0103

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 14/02/2026

Hydrology Paper of the Day @lizrenner.bsky.social on understanding the biogeography and survival of Walleye in Lake Oahe: modelling survival rates and movement across political boundaries; the need for collaboration in management; and spatial probabilities in context of different environments.

052

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 09/02/2026

Hydrology Paper of the Day @hydrohammond.bsky.social on how hydrological processes are affected by fire in the western United States: watersheds and streamflow generation; interception, snowmelt and ablation; evapotranspiration and overland flow; seasonality and a synthesis of environmental factors.

1133

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 10/02/2026

Hydrology Paper of the Day @agu.org on how landscape-scale processes and hydrogeology affect flowpaths for snowmelt: modelling for the Nanika catchment in British Columbia and the Krycklan catchment of Sweden; understanding anisotropic hydraulic conductivity; and the role of climate change.

0103

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 08/02/2026

Hydrology Paper of the Day @geoallen.bsky.social on how Synthetic Aperture Radar derived from Sentinel-1 satellites can be utilized to estimate water body evapotranspiration: sensor and data fusion with gridded datasets; robustly estimating wind fields; and application to the Lake Mead reservoir.

073

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 07/02/2026

Hydrology Paper of the Day @theglocal.bsky.social on the sociohydrology of the São Manoel Dam, Brazil: the need for Indigenous water managment; a social geography of sacred places; the need to preserve cultural heritage; and why companies operate at the intersection of water, language and culture.

051

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 05/02/2026

Hydrology Paper of the Day @jasminheilemann.bsky.social on civil engineering interventions, city management and climate change: urban heat adaptations in the Józsefváro district of Budapest; surveys to understand heatwaves; design outcomes and heat adaptation; and a co-designed urban intervention.

081

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 06/02/2026

Hydrology Paper of the Day @danielmu11er.bsky.social on crop water magnitudes in the Amu Darya Basin: ETa and exploring the geography of cropping practices; climate and climate driver anomalies; land use and the prevalance of downstream challenges and changes; and characterizing uncertainties.

061

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 03/02/2026

Hydrology Paper of the Day @timcurran.bsky.social on the foundational processes of pyro-ecophysiology: indicating how plants respond to drought conditions in the context of hydrological processes; relating flammability variables to drought responses; plant hydraulic traits; and climate change.

072

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 04/02/2026

Hydrology Paper of the Day @jvs-avs.bsky.social on how understorey communities in floodplain forests are affected by traits and hydrology: physiology and hydrological gradients; changes in species and the prevalence of drought; soil moisture in Central Europe; and ecosystem-informed management.

051

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 02/02/2026

Hydrology Paper of the Day @ericamarshall.bsky.social @trentpenman.bsky.social on utilizing vegetation to prevent fire spread in Australia: climate change and case studies for five regions; probabilistic simulations and forcings; weather from downscaling of GCMs; and the need for risk reduction.

192

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 01/02/2026

Hydrology Paper of the Day @limnologylauren.bsky.social on how climate change, warm weather, and low discharge affects acid mine drainage into wetlands: impacts of an abandoned silver mine; seasonality, pH and water quality observations; diurnal cycles related to photochemistry; and spatial cycles.

0115

Reposted by Georgia Papacharalampous

KinarNicholas.bsky.social @kinarnicholas.bsky.social · 31/01/2026

Hydrology Paper of the Day @lireactivewater.bsky.social on why chemical solutes in intermittent streams are dependent on hydrological changes: three decades of data from the Konza Prairie Biological Station, Kansas; examination of the power law CQ relationship; and patterns at different time scales.

1143