Preprints

There are 3017 Preprints listed.

Caledonian hot zone magmatism in the “Newer Granites”: insight from the Cluanie and Clunes plutons, Northern Scottish Highlands

Eilidh J.M. Milne, Iain Neill, Ian Millar, et al.

Published: 2022-05-24
Subjects: Physical Sciences and Mathematics

Scottish Newer Granites record the evolution of the Caledonides resulting from Iapetus subduction and slab breakoff during the Silurian-Devonian Scandian Orogeny, but relationships between geodynamics, petrogenesis and emplacement are incomplete. Laser ablation U-Pb results from magmatic zircons at the Cluanie pluton (Northern Highlands) identify clusters of concordant Silurian data points. A [...]

Development of a machine learning approach for local-scale ozone and PM2.5 forecasting: Application to multiple AQS sites in the Pacific Northwest

Kai Fan, Ranil Dhammapala, Kyle Harrington, et al.

Published: 2022-05-24
Subjects: Atmospheric Sciences

A machine learning (ML) based modeling framework has been successfully used to provide operational forecasts of O3 at Kennewick, WA. This paper shows its performance when applied to other observation locations to predict O3 and PM2.5 concentrations. The 10-time, 10-fold cross-validation method was used to evaluate the model performance in the Pacific Northwest (PNW). Similar to Kennewick, ML1 [...]

Surging vs. streaming: the dual fast ice flow response to variations in efficiency of the subglacial drainage landsystem

Ravier Edouard, Thomas Lelandais, Jean Vérité, et al.

Published: 2022-05-24
Subjects: Geomorphology, Glaciology

Observation and modelling have long contributed to associate surging and streaming of glaciers with glacier thermal regime, variations in meltwater availability and pressure and mechanical coupling at their beds. Using experimental modelling and palaeoglaciological mapping, we explore how the development of subglacial drainage landsystems controls variations in drainage efficiency and ice flow [...]

Divergence in climate model projections of future Arctic Ocean stratification and hydrography

Morven Muilwijk, Aleksi Nummelin, Lars H. Smedsrud, et al.

Published: 2022-05-23
Subjects: Physical Sciences and Mathematics

The Arctic Ocean is strongly stratified by salinity gradients in the uppermost layers. This stratification is a key attribute of the region as it acts as an effective barrier for the vertical exchanges of Atlantic Water heat, nutrients, and CO2 between intermediate depths and the surface of the Eurasian and Amerasian basins (EB and AB). Observations show that from 1970 to 2017, the stratification [...]

Exploration of urban sustainability of India through the lens of sustainable development goals

Ajishnu Roy, Nandini Garai, Jayanta Kumar Biswas

Published: 2022-05-23
Subjects: Sustainability

Sustainable Development Goal (SDG) index is a recognized metric for measuring progress in the UN SDGs. However, national or multinational-level analyses are more prevalent than sub-national types. We analysed the performance of 14 SDGs for 56 Indian cities (grouped into 6 regions) with available 77 indicators (2020-2021). Pearson’s correlation, hierarchical clustering, data envelopment analysis [...]

Where should hydrology go? An early-career perspective on the next IAHS Scientific Decade: 2023-2032

Theresa C van Hateren, Harro Joseph Jongen, Hadeel Al-Zawaidah, et al.

Published: 2022-05-22
Subjects: Earth Sciences

This paper shares an Early-Career Scientist (ECS) perspective on potential themes for the upcoming International Association of Hydrological Sciences (IAHS) scientific decade (SD). Six discussion sessions were organised in four countries in western Europe in spring 2022. Early-career hydrologists were invited to join the sessions to formulate potential SD themes, to provide feedback on themes [...]

Weak coupling of fluvial aggradation and paleo-denudation rates during the last glacial cycle, Crete, Greece

Richard F Ott, Dirk Scherler, Karl W Wegmann, et al.

Published: 2022-05-21
Subjects: Physical Sciences and Mathematics

The impact of Quaternary climate cycles on denudation rates and fluvial aggradation and incision is debated, especially in non-glaciated regions. Here we present paleo-denudation rates and geochronological constraints on aggradation and incision from the Sfakia and Elafonisi alluvial-fan sequences on Crete, Greece. We report seven optically stimulated luminescence (OSL), ten radiocarbon ages, and [...]

Gender Equity in Oceanography

Sonya Legg, Caixia Wang, Ellen Kappel, et al.

Published: 2022-05-20
Subjects: Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics, Social and Behavioral Sciences

Gender equity, providing for full participation of people of all genders in the oceanographic workforce, is an important goal for the continued success of the oceanographic enterprise. Here we describe historical obstructions to gender equity, assess recent progress and the current status of gender equity in oceanography by examining quantitative measures of participation, achievement, and [...]

Effect of combined dry-wet irrigation and microbial dynamics on soil nutrient bioavailability

Arnab Majumdar, Munish Kumar Upadhyay, Pradeep Kumar Dubey, et al.

Published: 2022-05-20
Subjects: Life Sciences

Alternate wetting-drying (AWD) cultivation with implication on soil microbiome, nutritional dynamics and rice yield during pre-monsoon (boro) and monsoon (aman) season are not well studied. In the present 4-year field study the impact of AWD (in pre-monsoon season) is compared with conventional mode of irrigation (i.e. flooded field in monsoon season). The release of soil nutrients into the [...]

Cloud feedback depends on Southern Ocean salinity

Maofeng Liu, Brian Soden, Gabriel Vecchi, et al.

Published: 2022-05-20
Subjects: Physical Sciences and Mathematics

The uncertainty in equilibrium climate sensitivity (ECS) has remained persistently unchanged for the past four decades1–4, with cloud feedback3,5–11 as a primary source of the uncertainty. Here we show that a key component of this uncertainty is rooted in the impact of base-state Southern Ocean salinity on cloud feedback. Sea surface salinity in the sinking zone of the Southern Ocean (45o-60oS) [...]

Researching Natural Hazards: The Harmful Legacy of Colonialism in Geoscience.

Jazmin P. Scarlett

Published: 2022-05-20
Subjects: Earth Sciences

Geoscience is a colonial science; its agenda was to survey and map landscapes in colonised nations which could be exploited to grow colonial empire's wealth at the expense of the local population. Natural hazard processes have been part of these landscapes, however their colonial legacy is sometimes neglected in discussions in how to live with them today. Former colonised nations' interactions [...]

Geometry and growth of syn-tectonic plutons emplaced in thrust shear zones: Insights from Abu Ziran Pluton, Egypt

Abdullah T. Mohammad, Yahia El Kazzaz

Published: 2022-05-20
Subjects: Earth Sciences, Physical Sciences and Mathematics, Tectonics and Structure

Coupling of deformation and magmatism has been reported in several old orogenic belts, particularly along thrust faults and shear zones. The syn-kinematic plutons in exhumed shear zones offer the best opportunity to understand the complex relationship between magmatism and regional deformation. The present paper investigates the geometry and internal structure of granite plutons emplaced in [...]

Resilience of woody ecosystems to precipitation variability

Daniell M Rempe, Erica L McCormick, W Jesse Hahm, et al.

Published: 2022-05-20
Subjects: Hydrology, Other Forestry and Forest Sciences

Large-scale plant mortality has far-reaching consequences for the water and carbon cycles. The role of belowground root-zone water storage (RWS) on the conditions that lead to mortality remains uncertain. It has been proposed that the RWS capacity, Smax, can determine ecosystem vulnerability to drought (Hahm et al., 2019a, Klos et al., 2018). However, incorporating information about RWS into [...]

The microwave snow grain size: a new concept to predict satellite observations over snow-covered regions

Ghislain Picard, Henning Löwe, Florent Domine, et al.

Published: 2022-05-20
Subjects: Physical Sciences and Mathematics

Satellite observations of snow-covered regions in the microwave range have the potential to retrieve essential climate variables such as snow height. This requires a precise understanding of how microwave scattering is linked to snow microstructural properties (density, grain size, grain shape and arrangement). This link has so far relied on empirical adjustments of the theories, precluding the [...]

Linking silicon isotopic signatures with diatom communities

Daniel Joseph Conley

Published: 2022-05-20
Subjects: Physical Sciences and Mathematics

The use of silicon isotope ratios (expressed as d30Si) as a paleolimnological proxy in lacustrine systems requires a better understanding of the role of lake processes in setting the d30Si values of dissolved Si (dSi) in water and in diatom biogenic silica (bSi). We determined the d30Si of modern dSi (d30SidSi) and bSi (d30SibSi) in three lakes in Lassen Volcanic National Park (LAVO), [...]

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