Roundup: Remote Sensing, Black Carbon, and Skiing

Roundup: Glacier Surface Motion, Black Carbon & Skiing


Remote Sensing Measures Glacier Surface Motion

From ISPRS Journal of Photogrammetry and Remote Sensing: “For monitoring of glacier surface motion in pole and alpine areas, radar remote sensing is becoming a popular technology accounting for its specific advantages of being independent of weather conditions and sunlight… Synthetic aperture radar (SAR) imaging is a complementary information source which has the advantage of providing images all year long, with no limitations in terms of weather condition and imaging time. It can reliably collect data with a pre-defined temporal interval over long periods of time with a ground resolution meeting the demands of glacier monitoring. Additionally, active SAR sensors observe both the amplitude and phase information of the backscattered signal from the ground target.”

Read more about remote sensing in alpine areas here.

A view of glacier surface motion (Source: Jeffrey Kargel/NASA).


Effects of Black Carbon on the Tibetan Plateau

From Advancements in Climate Change Research: “The Tibetan Plateau (TP), which has an abundance of snow and ice cover, is referred to as the water tower of Asia. Melting snow/ice makes a large contribution to regional hydrological resources and has direct impacts on local society and economic development. Recent studies have found that light-absorbing impurities, which may accelerate snow/ice melting, are considered as a key factor in cryospheric changes. However, there have been few assessments of the radiative effects of light-absorbing impurities on snow/ice cover over the Tibetan Plateau. Flanner et al. (2007) coupled a snow radiative model with a global climate model (GCM) and estimated the anthropogenic radiative forcing by the deposition of black carbon in snow averaged 1.5 W m−2 over the Tibetan Plateau.”

Learn more about this study here.

An aerial view of the Tibetan Plateau (Source: NASA/Creative Commons).


Skiing Across World’s Glaciers To Raise Awareness

From National Geographic: “Børge Ousland, now 54, teamed up with French adventurer Vincent Colliard, 30, for the Alpina Ice Legacy project. Over 10 years, the duo plans to ski across the world’s 20 largest glaciers in an effort to raise awareness about climate change. They crossed Alaska’s Stikine Glacier on their second expedition in May 2015, and in May 2016 they tackled the project’s third glacier, the St. Elias-Wrangell Mountains Range Ice Field. After 19 days and 267 miles in the field, [National Geographic] caught up with Ousland and Colliard in Alaska to talk suffering, partnership, and coming home alive.”

Read more from the interview here.

Vincent Colliard on LeConte glacier (Source: National Geographic).