Jordan Mertes
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View article: Spatial heterogeneity of soil carbon exchanges and their drivers in a boreal forest
Spatial heterogeneity of soil carbon exchanges and their drivers in a boreal forest Open
Boreal forests have a large impact on the global greenhouse gas balance and their soils constitute an important carbon (C) reservoir. Mature boreal forests are typically a net CO2 sink, but there are also examples of boreal forests that ar…
View article: Correcting for Systematic Underestimation of Topographic Glacier Aerodynamic Roughness Values From Hintereisferner, Austria
Correcting for Systematic Underestimation of Topographic Glacier Aerodynamic Roughness Values From Hintereisferner, Austria Open
Spatially-distributed values of glacier aerodynamic roughness ( z 0 ) are vital for robust estimates of turbulent energy fluxes and ice and snow melt. Microtopographic data allow rapid estimates of z 0 over discrete plot-scale areas, but a…
View article: A scale-dependent model to represent changing aerodynamic roughness of ablating glacier ice based on repeat topographic surveys
A scale-dependent model to represent changing aerodynamic roughness of ablating glacier ice based on repeat topographic surveys Open
Turbulent fluxes make a substantial and growing contribution to the energy balance of ice surfaces globally, but are poorly constrained owing to challenges in estimating the aerodynamic roughness length ( z 0 ). Here, we used structure fro…
View article: Insights into the effect of spatial and temporal flow variations onturbulent heat exchange at a mountain glacier
Insights into the effect of spatial and temporal flow variations onturbulent heat exchange at a mountain glacier Open
Multi-scale interactions between the glacier surface, the overlying atmosphere and the surrounding alpine terrain are highly complex. The high heterogeneity of boundary layer processes that couple these systems drives temporally and spatia…
View article: A multi-scale investigation of geometrically derived z0 from Hintereisferner, Austrian Alps
A multi-scale investigation of geometrically derived z0 from Hintereisferner, Austrian Alps Open
<p>Spatially and temporally distributed values of glacier aerodynamic roughness (z<sub>0</sub>) are required to improve estimates of glacier melt. z<sub>0</sub>, representing the topographically-controlled hei…
View article: Drumlins in the Nordenskiöldbreen forefield, Svalbard
Drumlins in the Nordenskiöldbreen forefield, Svalbard Open
The study of glacial landforms is important for understanding past subglacial processes and dynamics. The Nordenskiöldbreen forefield hosts numerous streamlined landforms resulting from a late Holocene glacier advance. Here, we present a g…
View article: Thickness estimation of supraglacial debris above ice cliff exposures using a high-resolution digital surface model derived from terrestrial photography
Thickness estimation of supraglacial debris above ice cliff exposures using a high-resolution digital surface model derived from terrestrial photography Open
The thickness of supraglacial debris cover controls how it impacts the ablation rate of underlying glacier ice, yet this quantity remains challenging to measure, particularly at glacier scales. We present a relatively straightforward, and …
View article: Structure and evolution of the drainage system of a Himalayan debris-covered glacier, and its relationship with patterns of mass loss
Structure and evolution of the drainage system of a Himalayan debris-covered glacier, and its relationship with patterns of mass loss Open
We provide the first synoptic view of the drainage system of a Himalayan debris-covered glacier and its evolution through time, based on speleological exploration and satellite image analysis of Ngozumpa Glacier, Nepal. The drainage system…
View article: Ngozumpa Glacier Gokyo Ice Cliffs Photographic Surface Model
Ngozumpa Glacier Gokyo Ice Cliffs Photographic Surface Model Open
Data files of a photographic surface model of three ice cliffs exposed on the surface of the Ngozumpa Glacier ( 27°57′N, 85°42′E), Nepal, near the village of Gokyo. Details of how the data were produced: 1160 full resolution JPEG images we…
View article: Ngozumpa Glacier Gokyo Ice Cliffs Photographic Surface Model
Ngozumpa Glacier Gokyo Ice Cliffs Photographic Surface Model Open
Data files of a photographic surface model of three ice cliffs exposed on the surface of the Ngozumpa Glacier ( 27°57′N, 85°42′E), Nepal, near the village of Gokyo. Details of how the data were produced: 1160 full resolution JPEG images we…
View article: Spatial variability of CO <sub>2</sub> uptake in polygonal tundra: assessing low-frequency disturbances in eddy covariance flux estimates
Spatial variability of CO <sub>2</sub> uptake in polygonal tundra: assessing low-frequency disturbances in eddy covariance flux estimates Open
The large spatial variability in Arctic tundra complicates the representative assessment of CO2 budgets. Accurate measurements of these heterogeneous landscapes are, however, essential to understanding their vulnerability to climate change…
View article: Using structure‐from‐motion to create glacier DEMs and orthoimagery from historical terrestrial and oblique aerial imagery
Using structure‐from‐motion to create glacier DEMs and orthoimagery from historical terrestrial and oblique aerial imagery Open
Increased resolution and availability of remote sensing products, and advancements in small‐scale aerial drone systems, allows observations of glacial changes at unprecedented levels of detail. Software developments, such as structure‐from…
View article: Structure and evolution of the drainage system of a Himalayan debris-covered glacier, and its relationship with patterns of mass loss
Structure and evolution of the drainage system of a Himalayan debris-covered glacier, and its relationship with patterns of mass loss Open
This paper provides the first synoptic view of the drainage system of a Himalayan debris-covered glacier and its evolution through time, based on speleological exploration and satellite image analysis of Ngozumpa Glacier, Nepal. The draina…
View article: NOVEL METHODS FOR QUANTIFYING SPATIO-TEMPORAL CHANGE IN GLACIATED AND SUBAQUEOUS ENVIRONMENTS
NOVEL METHODS FOR QUANTIFYING SPATIO-TEMPORAL CHANGE IN GLACIATED AND SUBAQUEOUS ENVIRONMENTS Open
In many scientific fields, it is important to actively develop new approaches to monitoring and quantifying changes within different systems. Often adapting existing tools or applying techniques from alternative fields can greatly improve …
View article: Spatial variability of CO <sub>2</sub> uptake in polygonal tundra – large overestimations by the conventional eddy covariance method
Spatial variability of CO <sub>2</sub> uptake in polygonal tundra – large overestimations by the conventional eddy covariance method Open
The large spatial variability in Arctic tundra complicates the representative assessment of CO2 budgets. Accurate measurements of these heterogeneous landscapes are, however, essential to understand their vulnerability to climate change. W…
View article: Supplementary material to "Spatial variability of CO <sub>2</sub> uptake in polygonal tundra – large overestimations by the conventional eddy covariance method"
Supplementary material to "Spatial variability of CO <sub>2</sub> uptake in polygonal tundra – large overestimations by the conventional eddy covariance method" Open
Natural frequency [Hz] -0.5 0.0 0.5 1.0 1.5 c Og(w,CO 2 ) = NEE [µmol m -2 s -1 ] 2015-08-13 00:30, U = 4.8 m s -1 , wind dir = 109 • , Tair = 10.4 • C, QC = 0 1 sec 1 min 30 min (a) Ogive optimization EddyPro EddyPro w/o spectral corr.
View article: JOG volume 62 issue 233 Cover and Front matter
JOG volume 62 issue 233 Cover and Front matter Open
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View article: Stagnation and mass loss on a Himalayan debris-covered glacier: processes, patterns and rates
Stagnation and mass loss on a Himalayan debris-covered glacier: processes, patterns and rates Open
The ablation areas of debris-covered glaciers typically consist of a complex mosaic of surface features with contrasting processes and rates of mass loss. This greatly complicates glacier response to climate change, and increases the uncer…