Aslak Grinsted

Accelerating ice flow at the onset of the Northeast Greenland Ice Stream

Deep in the interior of the Greenland ice sheet, ice flow is speeding up — but not due to recent changes in climate.
Sep 23, 2022 - 1 min read
The Transient Sensitivity of Sea Level Rise

As we warm our planet, oceans expand, ice on land melts, and sea levels rise. On century time scales, we find that the sea level response to warming can be characterized by a single metric: the …
Feb 2, 2020 - 3 min read
Normalized US hurricane damage estimates using area of total destruction, 1900−2018

We present an approach to normalize hurricane damage, where damage is framed in terms of an equivalent area of total destruction. This has some advantages over customary normalization schemes, and we …
Dec 1, 2019 - 2 min read
Blender terrain workflow notes

Here are some personal notes for how to make elevation models using Blender. install the BlenderGIS plugin. (optional) import geotiff with import using geotiff “DEM as a displacement …
Feb 1, 2024 - 1 min read
The Transient Sea Level response to external forcing in CMIP6 models

The planet is warming, and sea levels are rising as oceans expand and ice on land melts. The warmer the Earth gets, the faster the seas will rise. Projecting future sea level rise (SLR) using …
Oct 1, 2022 - 3 min read
The Bristol CMIP6 Data Hackathon

The Bristol CMIP6 Data Hackathon formed part of the Met Office Climate Data Challenge Hackathon series during 2021, bringing together around 100 UK early career researchers from a wide range of …
Jun 1, 2022 - 1 min read
FEniCS on windows

FEniCS is a really nice tool for finite element modelling in python. It is difficult to install FEniCS on windows. The official instructions use a docker image. which I think is a bit heavy handed. I …
Mar 25, 2022 - 1 min read
Modeling enhanced firn densification due to strain softenin

Ice becomes more less viscous when it is being strained. It is a power law fluid. Therefore firn densifies faster in shear margins. In this paper we show how existing firn densification models can be …
Sep 2, 2021 - 2 min read
On the limitations of using polarimetric radar sounding to infer the crystal-orientation fabric of ice masses

The orientation of ice-crystal grains in glacier ice locally co-evolve with and can enhance the flow of ice. Inferring the grain orientation structure inside glaciers and ice-sheets is therefore …
Sep 2, 2021 - 2 min read
Estimating the ice thickness of the Müller Ice Cap to support selection of a drill site

Feb 2, 2021 - 1 min read
Upstream flow effects revealed in the EastGRIP ice-core using a Monte Carlo inversion of a two-dimensional ice-flow model

The EastGRIP ice core is located in an ice-stream on the eastern flank of the Greenland ice-sheet. Deeper and older ice in the ice core will have originated upstream from the drill site. In this …
Feb 2, 2021 - 2 min read
Ice thickness and volume of Renland Ice Cap, East Greenland

Dec 1, 2020 - 1 min read