EARTH 10 Lecture Notes - Lecture 15: Pine Island Glacier, Antarctic Ice Sheet, Thwaites Glacier
Document Summary
2-3m: air temps warming in many parts of antarctica. Antarctic peninsula: 0. 58+/-0. 31 c per decade: antarctic peninsula one of the fastest warming places on earth. Global avg: 0. 13+/-0. 03 c: w antarctic ice sheet contributing to sea-level rise, record reveals a linear increase in annual temp from 1958-2010 by. 2. 4+/-1. 2 c: central w antarctica one of fastest warming regions globally, statically significant warming during australia summer (dec-jan), peak of melting season, southern ocean: +1 c over last 80 years down to 3000 m. Weak underbelly of antarctic ice sheet : responsible for about 25% of antarctica"s ice loss, fastest melting glacier in antarctica, mass losses from pig and thwaites glacier dominate antarctic ice. Sheet ice losses: mass loss from this basin doubled from 1996-2006 and it"s largest ice loss in antarctica, other observations of change: temp, wind, sea-ice, biology, glaciers, ice shelves, sea-level rise. Changing winds: circum-antarctic winds increased by 15-20% in last 20 years.
