C. Max Stevens
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View article: NASA GSFC Firn Densification Model version 1.2.1 (GSFC-FDMv1.2.1) for the Greenland and Antarctic Ice Sheets: Jan 1980 - Jul 2024
NASA GSFC Firn Densification Model version 1.2.1 (GSFC-FDMv1.2.1) for the Greenland and Antarctic Ice Sheets: Jan 1980 - Jul 2024 Open
Overview The NASA GSFC-FDM v1.2.1 provides the evolution of firn air content (FAC), surface mass balance (SMB) (and its individual components), and total firn height change over the Greenland and Antarctic Ice Sheets from January 1, 1980 t…
View article: Ongoing firn warming at Eclipse Icefield, Yukon, indicates potential widespread meltwater percolation and retention in firn pack across the St. Elias Range
Ongoing firn warming at Eclipse Icefield, Yukon, indicates potential widespread meltwater percolation and retention in firn pack across the St. Elias Range Open
Warming in high alpine regions is leading to an increase in glacier surface melt production, firn temperature, and firn liquid water content, altering regional hydrology and climate records contained in the ice. Here we use field observati…
View article: Seasonal temperatures in West Antarctica during the Holocene
Seasonal temperatures in West Antarctica during the Holocene Open
View article: Ongoing firn warming at Eclipse Icefield, Yukon, indicates potential widespread meltwater percolation and retention in firn pack across the St. Elias Range
Ongoing firn warming at Eclipse Icefield, Yukon, indicates potential widespread meltwater percolation and retention in firn pack across the St. Elias Range Open
Warming in high alpine regions is leading to an increase in glacier surface melt production, firn temperature, and firn liquid water content, altering regional hydrology and climate records contained in the ice. Here we use field observati…
View article: A physics-based Antarctic melt detection technique: combining Advanced Microwave Scanning Radiometer 2, radiative-transfer modeling, and firn modeling
A physics-based Antarctic melt detection technique: combining Advanced Microwave Scanning Radiometer 2, radiative-transfer modeling, and firn modeling Open
Surface melt on ice shelves has been linked to hydrofracture and subsequent ice shelf breakup. Since the 1990s, scientists have been using microwave radiometers to detect melt on ice shelves and ice sheets by applying various statistical t…
View article: Publisher Correction: Firn on ice sheets
Publisher Correction: Firn on ice sheets Open
View article: Hybridized, Physics-Based Melt Detection for 13 Antarctic sites v2
Hybridized, Physics-Based Melt Detection for 13 Antarctic sites v2 Open
An (updated) dataset of 13 Antarctic sites with microwave grain size (exponential correlation lengths/p_exp) as well as melt day detection using the Hybrid Method. The Hybrid Method combines the Community Firn Model and the Snow Microwave …
View article: Direct measurements of firn-density evolution from 2016 to 2022 at Wolverine Glacier, Alaska
Direct measurements of firn-density evolution from 2016 to 2022 at Wolverine Glacier, Alaska Open
Knowledge of snow and firn-density change is needed to use elevation-change measurements to estimate glacier mass change. Additionally, firn-density evolution on glaciers is closely connected to meltwater percolation, refreezing and runoff…
View article: A new model of dry firn-densification constrained by continuous strain measurements near South Pole
A new model of dry firn-densification constrained by continuous strain measurements near South Pole Open
Converting measurements of ice-sheet surface elevation change to mass change requires measurements of accumulation and knowledge of the evolution of the density profile in the firn. Most firn-densification models are tuned using measured d…
View article: Role of Snowfall Versus Air Temperatures for Greenland Ice Sheet Melt‐Albedo Feedbacks
Role of Snowfall Versus Air Temperatures for Greenland Ice Sheet Melt‐Albedo Feedbacks Open
The Greenland Ice Sheet is a leading contributor to global sea‐level rise because climate warming has enhanced surface meltwater runoff. Melt rates are particularly sensitive to air temperatures due to feedbacks with albedo. The primary me…
View article: Supplementary material to "A physics-based Antarctic melt detection technique: Combining AMSR-2, radiative transfer modeling, and firn modeling"
Supplementary material to "A physics-based Antarctic melt detection technique: Combining AMSR-2, radiative transfer modeling, and firn modeling" Open
Figure S1: Same as Figure 3 from the main text, except using the 18H channel for all derivations.Dome C (a) Brightness temperature from AMSR-2 (18H; black line) with thresholding techniques from Zwally and Fiegles (1994; cyan line), Torine…
View article: A physics-based Antarctic melt detection technique: Combining AMSR-2, radiative transfer modeling, and firn modeling
A physics-based Antarctic melt detection technique: Combining AMSR-2, radiative transfer modeling, and firn modeling Open
Surface melt on ice shelves has been linked to hydrofracture and subsequent ice shelf breakup. Since the 1990s, scientists have been using microwave radiometers to detect melt on ice shelves and ice sheets by applying various statistically…
View article: An evaluation of a physics-based firn model and a semi-empirical firn model across the Greenland Ice Sheet (1980–2020)
An evaluation of a physics-based firn model and a semi-empirical firn model across the Greenland Ice Sheet (1980–2020) Open
The Greenland Ice Sheet's (GrIS) firn layer buffers the ice sheet's contribution to sea level rise by storing meltwater in its pore space. However, available pore space and meltwater retention capability is lost due to ablation of the firn…
View article: Hybridized, Physics-Based Melt Detection for 13 Antarctic sites
Hybridized, Physics-Based Melt Detection for 13 Antarctic sites Open
A dataset of 13 Antarctic sites with exponential correlation lengths as well as melt day detection using the hybrid method. The hybrid method combines the Community Firn Model and the Snow Microwave Radiative Transfer model with AMSR-2 to …
View article: Climatic imprint in the mechanical properties of ice sheets and its effect on ice flow: Observations fromSouth Pole and EPICA Dome C ice cores
Climatic imprint in the mechanical properties of ice sheets and its effect on ice flow: Observations fromSouth Pole and EPICA Dome C ice cores Open
The climatic conditions over ice sheets at the time of snow deposition and compaction imprint distinctive crystallographic properties to the resulting ice. As it gets buried, its macroscopic structure evolves due to vertical compression bu…
View article: Greenland Ice Sheet modeled firn properties from SNOWPACK and the Community Firn Model (1980-2020)
Greenland Ice Sheet modeled firn properties from SNOWPACK and the Community Firn Model (1980-2020) Open
This dataset contains model output from the physics-based SNOWPACK firn model and the semi-empirical Community Firn Model (CFM) over the Greenland Ice Sheet from 1980 through 2020. Included are individual density profiles for locations wit…
View article: Greenland Ice Sheet modeled firn properties from SNOWPACK and the Community Firn Model (1980-2020)
Greenland Ice Sheet modeled firn properties from SNOWPACK and the Community Firn Model (1980-2020) Open
This dataset contains model output from the physics-based SNOWPACK firn model and the semi-empirical Community Firn Model (CFM) over the Greenland Ice Sheet from 1980 through 2020. Included are individual density profiles for locations wit…
View article: Hybridized, Physics-Based Melt Detection for 13 Antarctic sites v2
Hybridized, Physics-Based Melt Detection for 13 Antarctic sites v2 Open
An (updated) dataset of 13 Antarctic sites with microwave grain size (exponential correlation lengths/p_exp) as well as melt day detection using the Hybrid Method. The Hybrid Method combines the Community Firn Model and the Snow Microwave …
View article: Hybridized, Physics-Based Melt Detection for 13 Antarctic sites v2
Hybridized, Physics-Based Melt Detection for 13 Antarctic sites v2 Open
An (updated) dataset of 13 Antarctic sites with microwave grain size (exponential correlation lengths/p_exp) as well as melt day detection using the Hybrid Method. The Hybrid Method combines the Community Firn Model and the Snow Microwave …
View article: Seasonal temperatures in West Antarctica during the Holocene
Seasonal temperatures in West Antarctica during the Holocene Open
View article: Comment on tc-2022-223
Comment on tc-2022-223 Open
Abstract. The Greenland Ice Sheet's (GrIS) firn layer buffers the ice sheet's contribution to sea level rise by storing meltwater in its pore space. However, available pore space and meltwater retention capability is lost …
View article: Observed and modeled Greenland firn properties (1980–2020)
Observed and modeled Greenland firn properties (1980–2020) Open
The Greenland Ice Sheet's (GrIS) firn layer buffers the ice sheet's contribution to sea level rise by storing meltwater in its pore space. However, available pore space and meltwater retention capability is lost due to ablation of the firn…
View article: Greenland Ice Sheet modeled firn properties from SNOWPACK and the Community Firn Model (1980-2020)
Greenland Ice Sheet modeled firn properties from SNOWPACK and the Community Firn Model (1980-2020) Open
This dataset contains model output from the physics-based SNOWPACK firn model and the semi-empirical Community Firn Model (CFM) over the Greenland Ice Sheet from 1980 through 2020. Included are individual density profiles for locations wit…
View article: Simulations of firn processes over the Greenland and Antarctic ice sheets: 1980–2021
Simulations of firn processes over the Greenland and Antarctic ice sheets: 1980–2021 Open
Conversion of altimetry-derived ice-sheet volume change to mass requires an understanding of the evolution of the combined ice and air content within the firn column. In the absence of suitable techniques to observe the changes to the firn…
View article: NASA GSFC Firn Densification Model version 1.2.1 (GSFC-FDMv1.2.1) for the Greenland and Antarctic Ice Sheets: 1980-2021
NASA GSFC Firn Densification Model version 1.2.1 (GSFC-FDMv1.2.1) for the Greenland and Antarctic Ice Sheets: 1980-2021 Open
Overview The NASA GSFC-FDM v1.2.1 provides the evolution of firn air content (FAC), surface mass balance (SMB) (and its individual components), and total firn height change over the Greenland and Antarctic Ice Sheets from …
View article: NASA GSFC Firn Densification Model version 1.2.1 (GSFC-FDMv1.2.1) for the Greenland and Antarctic Ice Sheets: 1980-2022
NASA GSFC Firn Densification Model version 1.2.1 (GSFC-FDMv1.2.1) for the Greenland and Antarctic Ice Sheets: 1980-2022 Open
Overview The NASA GSFC-FDM v1.2.1 provides the evolution of firn air content (FAC), surface mass balance (SMB) (and its individual components), and total firn height change over the Greenland and Antarctic Ice Sheets from …
View article: Investigating the influence of local insolation on near-surface snow grain properties to constrain the mechanisms of pore close-off and associated elemental fractionation in polar firn
Investigating the influence of local insolation on near-surface snow grain properties to constrain the mechanisms of pore close-off and associated elemental fractionation in polar firn Open
<p>Processes controlling pore closure in deep polar firn are broadly understood, yet defining the physical mechanisms remains ambiguous. Firn densification models predict pore close-off depths which are subsequently used in firn air …
View article: The Greenland Firn Compaction Verification and Reconnaissance (FirnCover) dataset, 2013–2019
The Greenland Firn Compaction Verification and Reconnaissance (FirnCover) dataset, 2013–2019 Open
Assessing changes in the density of snow and firn is vital to convert volume changes into mass changes on glaciers and ice sheets. Firn models simulate this process but typically rely upon steady-state assumptions and geographically and te…
View article: The Greenland Firn Compaction Verification and Reconnaissance (FirnCover) Dataset, 2013–2019
The Greenland Firn Compaction Verification and Reconnaissance (FirnCover) Dataset, 2013–2019 Open
Assessing changes in the density of snow and firn is vital to convert volume changes into mass changes on glaciers and ice sheets. Firn models simulate this process but typically rely upon steady-state assumptions and geographically and te…
View article: Reconstruction of temperature, accumulation rate, and layer thinning from an ice core at South Pole using a statistical inverse method
Reconstruction of temperature, accumulation rate, and layer thinning from an ice core at South Pole using a statistical inverse method Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Atmospheres. ESSOAr is a venue for early communication or feedback before peer review. Data may be pre…