Aaron A. Mohammed
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View article: Model-based analysis of solute transport and potential carbon mineralization in the active layer of a hillslope underlain by permafrost with seasonal variability and climate change
Model-based analysis of solute transport and potential carbon mineralization in the active layer of a hillslope underlain by permafrost with seasonal variability and climate change Open
Permafrost carbon, stored in frozen organic matter across vast Arctic and sub-Arctic regions, represents a substantial and increasingly vulnerable carbon reservoir. As global temperatures rise, the accelerated thawing of permafrost release…
View article: Quantifying groundwater exchanges in the water balance of small thermokarst ponds: implications for carbon cycling
Quantifying groundwater exchanges in the water balance of small thermokarst ponds: implications for carbon cycling Open
View article: Quantifying Groundwater Exchanges in the Water Balance of Small Thermokarst Ponds: Implications for Carbon Cycling
Quantifying Groundwater Exchanges in the Water Balance of Small Thermokarst Ponds: Implications for Carbon Cycling Open
View article: Submarine Groundwater Discharge at a Mega‐Tidal Beach
Submarine Groundwater Discharge at a Mega‐Tidal Beach Open
Tidally influenced groundwater systems in coastal environments represent important mixing zones of fresh groundwater and circulating seawater, manifesting as submarine groundwater discharge (SGD). Water circulation induced by tidal pumping…
View article: Comment on egusphere-2024-1606
Comment on egusphere-2024-1606 Open
Abstract. Permafrost carbon, stored in frozen organic matter across vast Arctic and sub-Arctic regions, represents a substantial and increasingly vulnerable carbon reservoir. As global temperatures rise, the accelerated th…
View article: Model-based analysis of solute transport and potential carbon mineralization in a permafrost catchment under seasonal variability and climate change
Model-based analysis of solute transport and potential carbon mineralization in a permafrost catchment under seasonal variability and climate change Open
Permafrost carbon, stored in frozen organic matter across vast Arctic and sub-Arctic regions, represents a substantial and increasingly vulnerable carbon reservoir. As global temperatures rise, the accelerated thawing of permafrost release…
View article: Supplementary material to "Model-based analysis of solute transport and potential carbon mineralization in a permafrost catchment under seasonal variability and climate change"
Supplementary material to "Model-based analysis of solute transport and potential carbon mineralization in a permafrost catchment under seasonal variability and climate change" Open
After surveying the subcatchment in Endalen valley by drone, we process the survey in the photogrammetrical suite Agisoft Metashape version 1.8.4 using the default processing settings.We register the survey data to the 2009 Digital Elevati…
View article: Saltwater Intrusion Into a Confined Island Aquifer Driven by Erosion, Changing Recharge, Sea‐Level Rise, and Coastal Flooding
Saltwater Intrusion Into a Confined Island Aquifer Driven by Erosion, Changing Recharge, Sea‐Level Rise, and Coastal Flooding Open
Aquifers on small islands are at risk of salinization due to low elevations and limited adaptive capacity, and present risks will be exacerbated by climate change. Most studies addressing small‐island saltwater intrusion (SWI) have focused…
View article: Mobilization of subsurface carbon pools driven by permafrost thaw and reactivation of groundwater flow: a virtual experiment
Mobilization of subsurface carbon pools driven by permafrost thaw and reactivation of groundwater flow: a virtual experiment Open
Permafrost thaw leads to an increase in groundwater circulation and potential mobilization of organic carbon sequestered in deep Arctic sediments (e.g. 3–25 m below surface). Upon thaw, a portion of this carbon may be transported along new…
View article: Intrinsic Disorder as a Natural Preservative: High Levels of Intrinsic Disorder in Proteins Found in the 2,600-Year-Old Human Brain
Intrinsic Disorder as a Natural Preservative: High Levels of Intrinsic Disorder in Proteins Found in the 2,600-Year-Old Human Brain Open
Proteomic analysis revealed the preservation of many proteins in the “Heslington brain” (which is at least 2,600-year-old brain tissue uncovered within the skull excavated in 2008 from a pit in Heslington, Yorkshire, England). …
View article: Present and future thermal regimes of intertidal groundwater springs in a threatened coastal ecosystem
Present and future thermal regimes of intertidal groundwater springs in a threatened coastal ecosystem Open
In inland settings, groundwater discharge thermally modulates receiving surface water bodies and provides localized thermal refuges; however, the thermal influence of intertidal springs on coastal waters and their thermal sensitivity to cl…
View article: Assessment of groundwater discharge pathways in a till-dominated coastal aquifer
Assessment of groundwater discharge pathways in a till-dominated coastal aquifer Open
Study region: Mabou Harbour located in Cape Breton Island, Nova Scotia, Canada, is representative of the many natural harbours throughout the Maritime region of Canada as the surrounding landscape is overlain by glacial deposits, predomina…
View article: Sea-level rise and warming mediate coastal groundwater discharge in the Arctic
Sea-level rise and warming mediate coastal groundwater discharge in the Arctic Open
Groundwater discharge is an important mechanism through which fresh water and associated solutes are delivered to the ocean. Permafrost environments have traditionally been considered hydrogeologically inactive, yet with accelerated climat…
View article: Supplementary material to "Intertidal spring discharge to a coastal ecosystem and impacts of climate change on future groundwater temperature: A multi-method investigation"
Supplementary material to "Intertidal spring discharge to a coastal ecosystem and impacts of climate change on future groundwater temperature: A multi-method investigation" Open
View article: Intertidal spring discharge to a coastal ecosystem and impacts of climate change on future groundwater temperature: A multi-method investigation
Intertidal spring discharge to a coastal ecosystem and impacts of climate change on future groundwater temperature: A multi-method investigation Open
In inland settings, groundwater discharge is known to thermally modulate receiving surface water bodies and provide localized thermal refuges; however, the thermal influence of intertidal springs on coastal waters and the thermal sensitivi…
View article: Saltwater Intrusion Intensifies Coastal Permafrost Thaw
Saltwater Intrusion Intensifies Coastal Permafrost Thaw Open
Surface effects of sea‐level rise (SLR) in permafrost regions are obvious where increasingly iceless seas erode and inundate coastlines. SLR also drives saltwater intrusion, but subsurface impacts on permafrost‐bound coastlines are unseen …
View article: Modeling Reactive Solute Transport in Permafrost‐Affected Groundwater Systems
Modeling Reactive Solute Transport in Permafrost‐Affected Groundwater Systems Open
Understanding the interactions between ground freeze‐thaw, groundwater flow, and solute transport is imperative for evaluating the fate of contaminants in permafrost regions. However, predicting solute migration in permafrost‐affected grou…
View article: Dual‐permeability modeling of preferential flow and snowmelt partitioning in frozen soils
Dual‐permeability modeling of preferential flow and snowmelt partitioning in frozen soils Open
The infiltrability of frozen soils modulates the partitioning of snowmelt between infiltration and runoff in cold regions. Preferential flow in macropores may enhance infiltration, but flow dynamics in frozen soil are complicated by soil h…
View article: Review of tc-2020-280
Review of tc-2020-280 Open
The authors have presented an experimental study on the effects of freezing temperatures and one freeze-thaw cycle on soil infiltrability.Using a relatively simple laboratory experimental set-up, the authors subjected repacked soil samples…
View article: Effects of preferential flow on snowmelt partitioning and groundwater recharge in frozen soils
Effects of preferential flow on snowmelt partitioning and groundwater recharge in frozen soils Open
Snowmelt is a major source of groundwater recharge in cold regions. Throughout many landscapes snowmelt occurs when the ground is still frozen; thus frozen soil processes play an important role in snowmelt routing, and, by extension, the t…
View article: Measurement and Simulation of Preferential Flow in Frozen Soils
Measurement and Simulation of Preferential Flow in Frozen Soils Open
The infiltrability of frozen soils strongly influences the partitioning of snowmelt and hydrological functioning of cold regions. Preferential flow in macropores may enhance infiltration into frozen soil, but flow dynamics are complicated …
View article: Marked manuscript with requested changes
Marked manuscript with requested changes Open
View article: Marked manuscript with requested changes
Marked manuscript with requested changes Open
View article: Reply to RC1 review of hess-2019-169
Reply to RC1 review of hess-2019-169 Open
View article: Reply to RC2 review of hess-2019-169
Reply to RC2 review of hess-2019-169 Open
View article: Effects of preferential flow on snowmelt partitioning andgroundwater recharge in frozen soils
Effects of preferential flow on snowmelt partitioning andgroundwater recharge in frozen soils Open
Snowmelt is a major source of groundwater recharge in cold regions. Throughout many landscapes snowmelt occurs when ground is still frozen, thus frozen soil processes play an important role in snowmelt routing, and, by extension, on the ti…
View article: Supplementary material to "Effects of preferential flow on snowmelt partitioning andgroundwater recharge in frozen soils"
Supplementary material to "Effects of preferential flow on snowmelt partitioning andgroundwater recharge in frozen soils" Open
View article: Rethinking the Use of Seabed Sediment Temperature Profiles to Trace Submarine Groundwater Flow
Rethinking the Use of Seabed Sediment Temperature Profiles to Trace Submarine Groundwater Flow Open
Submarine groundwater fluxes across the seafloor facilitate important hydrological and biogeochemical exchanges between oceans and seabed sediment, yet few studies have investigated spatially distributed groundwater fluxes in deep‐ocean en…
View article: Snowmelt Infiltration and Macropore Flow in Frozen Soils: Overview, Knowledge Gaps, and a Conceptual Framework
Snowmelt Infiltration and Macropore Flow in Frozen Soils: Overview, Knowledge Gaps, and a Conceptual Framework Open
Core Ideas Review highlights the hydrological importance of macropore flow in frozen soils. Governing flow mechanisms and infiltration and refreezing dynamics are discussed. Research is needed to integrate macropore flow and soil freeze–th…
View article: A Coupled Soil Water Balance Model for Simulating Depression‐Focused Groundwater Recharge
A Coupled Soil Water Balance Model for Simulating Depression‐Focused Groundwater Recharge Open
Core Ideas Ephemeral ponds in depressions are the foci of groundwater recharge in the Canadian Prairies. Freeze–thaw processes influence snowmelt runoff and depression‐focused recharge. A new water balance model was developed to represent …