ICESat-2 land ice products resolve Greenland and Antarctic ice-sheet height changes on seasonal to multiyear time scales [0.03%]
基于ICESat-2的冰 sheet顶高产品的时变分析:从季节到多年时间尺度上的格陵兰和南极冰盖高度变化
Benjamin E Smith,Tyler Clark Sutterley,Helen A Fricker et al.
Benjamin E Smith et al.
NASA's ICESat-2 mission was launched in 2018, carrying a photon-counting laser altimeter, with a primary objective of measuring height changes across Earth's surface. ICESat-2 has provided measurements of ice surface height between 88º N a...
Optimization of automated sea-ice melt-pond-depth determination in ICESat-2 altimeter data with the Density-Dimension Algorithm for bifurcating sea-ice reflectors using airborne campaign data [0.03%]
基于航空飞行数据使用密度维度算法优化ICESat-2测高仪数据中的海冰融化 ponds深度自动化确定方法
Thomas Trantow,Ute Herzfeld,Mia Vanderwilt et al.
Thomas Trantow et al.
Melt ponding on Arctic sea ice is a key indicator of the transition from a predominantly perennial to a seasonal sea-ice cover, yet quantitative data on pond depth remain limited. Here, we present the first analysis of melt-pond depth using...
Estimating effective pressures in active subglacial lakes with ICESat-2 satellite altimetry [0.03%]
基于ICESat-2卫星测高估算活跃冰下湖泊的有效压力
Aaron Stubblefield,Aleah Nicholson Sommers,Colin Meyer et al.
Aaron Stubblefield et al.
The difference between the ice and water pressures, or the effective pressure, influences water flow and sliding at the ice-bed interface. Effective pressure is typically quantified with subglacial hydrology models because direct measuremen...
Initial assessment of all-season Arctic sea ice thickness from ICESat-2 [0.03%]
ICESat-2卫星北极全年海冰厚度初步研究
Alek Petty,Alex Cabaj,Jack C Landy
Alek Petty
We present an initial assessment of all-season Arctic sea ice thickness estimates from ICESat-2 by combining freeboard retrievals with all-season SnowModel-LG snow loading. ICESat-2 captures the key regional and seasonal patterns of Arctic ...
Crevasse density, orientation and temporal variability at Narsap Sermia, Greenland [0.03%]
格陵兰纳斯阿帕塞米亚冰川的裂缝密度、走向及时间变化性
Maximillian Van Wyk de Vries,James M Lea,David W Ashmore
Maximillian Van Wyk de Vries
Mass loss from iceberg calving at marine-terminating glaciers is one of the largest and most poorly constrained contributors to sea-level rise. However, our understanding of the processes controlling ice fracturing and crevasse evolution is...
Semi-automated open water iceberg detection from Landsat applied to Disko Bay, West Greenland [0.03%]
基于Landsat的半自动开水上冰山检测在西格陵兰迪斯科湾的应用研究
Jessica Scheick,Ellyn M Enderlin,Gordon Hamilton
Jessica Scheick
Changes in Greenland's marine-terminating outlet glaciers have led to changes in the flux of icebergs into Greenland's coastal waters, yet icebergs remain a relatively understudied component of the ice-ocean system. We developed a simple ic...
Summer surface melt thins Petermann Gletscher Ice Shelf by enhancing channelized basal melt [0.03%]
夏季表面融化通过增强基底河道融化而消减彼得曼冰架厚度
Peter Washam,Keith W Nicholls,Andreas Mühow et al.
Peter Washam et al.
Increasing ocean and air temperatures have contributed to the removal of floating ice shelves from several Greenland outlet glaciers; however, the specific contribution of these external forcings remains poorly understood. Here we use atmos...
A Complete Map of Greenland Ice Velocity Derived from Satellite Data Collected over 20 Years [0.03%]
基于20年星载数据的格陵兰冰流速完整地图
Ian Joughin,Ben E Smith,Ian M Howat
Ian Joughin
While numerous maps of Greenland ice flow velocity exist, most have gaps in coverage and/or accuracy is limited. We processed a large volume of synthetic aperture radar (SAR) and Landsat 8 imagery collected between 1995 and 2015 to produce ...
Ian Joughin,Ben E Smith,Ian M Howat et al.
Ian Joughin et al.
Glaciers in Greenland are changing rapidly. To better understand these changes, we have produced a series of seven synthetic-aperture-radar (SAR) backscatter mosaics for seven winters during the period from 2000 to 2013. Six of the mosaics ...