Daily Glacier

2017-09-25 · 347 words · 2 minute read

dailyglacier is a twitter-bot that tweets images of a random glacier every day. This page is used to display additional metadata and maps from the bot. .cocoen{box-sizing:border-box;cursor:pointer;line-height:0;margin:0;overflow:hidden;padding:0;position:relative;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none} .cocoen *{box-sizing:inherit} .cocoen ::after,.cocoen ::before{box-sizing:inherit} .cocoenimg,.cocoenpictureimg{display:block;width:100%} .cocoendiv:first-child,picture .cocoendiv{height:100%;left:0;overflow:hidden;position:absolute;top:0;width:50%} .cocoen-drag{background:#fff;bottom:0;cursor:ew-resize;left:50%;margin-left:-1px;position:absolute;top:0;width:2px} .cocoen-drag::before{border:3px solid #fff;content:'';height:30px;left:50%;margin-left:-7px;margin-top:-18px;position:absolute;top:50%;width:14px} Metadata: Metadata refers to the glacier at the central pixel in the images. Files: image1, image2, gif, mp4 GLIMS ID: RGI ID: Scene 1: Scene 2: Elevation range: Temperature plot: HADCRUT4+CW NCEP/NCAR reanalysis Google timelapse Bing maps Data sources: Randolph Glacier Inventory, Landsat data from USGS EarthExplorer, google mirror of Landsat 4-8, OSM nominatim.

A workflow for video presentations

2017-09-06 · 201 words · 1 minute read

Video presentations are a powerful way of getting your science across to a wider audience. I recently published a scientific study on some very large Jökulhlaup in East Greenland. I wanted to have a video with the press release, but as our go to guy was on vacation I had to do it myself.

Migrating to Hugo

2017-09-06 · 312 words · 2 minute read

tips

This site is now created using a static site generator called hugo. I host it on netlify, and the source files are hosted on github. This is a nice setup for academics. So thumbs up from me.

Periodic outburst floods from an ice-dammed lake in East Greenland

2017-09-06 · 100 words · 1 minute read

glof · jökulhlaup · outburst flood · flood · remote sensing

We report evidence of four cycles of outburst floods from Catalina Lake, an ice-dammed lake in East Greenland, identified in satellite imagery between 1966–2016. The lake measures 20–25 km², and lake level drops 130–150 m in each event, corresponding to a water volume of 2.6–3.4 Gt, and a release of potential energy of 10¹⁶ J, among the largest outburst floods reported in historical times. The drainage cycle has shortened systematically, and the lake filling rate has increased over each cycle, suggesting that the drainage pattern is changing due to climate warming with possible implications for environmental conditions in Scoresbysund fjord.

The response of the Zachariae and 79N glaciers in Northeast Greenland to seasonal surface melt

2017-09-01 · 153 words · 1 minute read

The seasonal response to surface melting of the Northeast Greenland Ice Stream outlets, Zachariae and 79N, is investigated using new highly temporally resolved surface velocity maps for 2016 combined with numerical modelling. The seasonal speed-up at 79N of 0.15km/yr is suggested to be driven by a decrease in effective basal pressure induced by surface melting, whereas for Zachariae its 0.11km/yr seasonal speed-up correlates equally well with the break-up of its large ice mélange.

Coastal sea level rise with warming above 2°C

2016-12-12 · 311 words · 2 minute read

Two degrees of global warming above the preindustrial level is widely suggested as an appropriate threshold beyond which climate change risks become unacceptably high. This “2°C” threshold is likely to be reached between 2040 and 2050 for both Representative Concentration Pathway (RCP) 8.5 and 4.5. Resulting sea level rises will not be globally uniform, due to ocean dynamical processes and changes in gravity associated with water mass redistribution. Here we provide probabilistic sea level rise projections for the global coastline with warming above the 2°C goal.