Hanne Hvidtfeldt Christiansen

Hanne Hvidtfeldt Christiansen (born March 28, 1965 ) is a Danish geographer. She is professor of physical geography, deputy teaching dean and also head of department at the University Center in Svalbard (UNIS).

Life

Christiansen was a postdoctoral fellow in the Geosciences Department at the University of Oslo from 2002 to 2003 . Later she was appointed professor at UNIS on Spitzbergen . In 2018 she was appointed Deputy Teaching Dean at UNIS. She has been President of the International Permafrost Association since June 2016 .

Act

Christiansen's work often deals with permafrost soils . She took part in extensive expeditions to both Greenland and Svalbard to investigate the dangers to the earth's climate from the thawing of these soils. Was in a sensational study permafrost in 2019, at the Christiansen involved, it could be shown that by the climate change thousands of years old ice in the bottoms of the global cold regions in many places much faster than expected thawed so that large amounts of greenhouse gases from released into the soil and this in turn leads to a massive acceleration of climate change. This provided significant evidence for the tipping elements in the earth system.

Publications (selection)

• Hanne H. Christiansen: Windpolished boulders and bedrock in the Scottish Highlands: evidence and implications of Late Devensian wind activity. In: Boreas . Volume 33, No. 1, 2004, pp. 82-94, doi: 10.1111 / j.1502-3885.2004.tb00998.x
• Bo Elberling , Hanne H. Christiansen, Birger U. Hansen : High nitrous oxide production from thawing permafrost. In: Nature Geoscience Letters . 2010, doi: 10.1038 / ngeo803
• Boris K. Biskaborn , Hanne H. Christiansen et al .: Permafrost is warming at a global scale. In: Nature Communications . Volume 10, No. 264, 2019, doi: 10.1038 / s41467-018-08240-4

Individual evidence

1. ^ Sofus Christiansen: Niels Nielsen prizes . In: Geografisk Tidsskrift . tape 97 , January 1, 1997, ISSN  0016-7223 ( tidsskrift.dk [accessed May 23, 2020]).
2. ^ Hanne Hvidtfeldt Christiansen. In: UNIS. Retrieved May 23, 2020 (English). 
3. ^ Hanne H. Christiansen. In: Research Gate. Retrieved May 23, 2020 (English). 
4. ^ Hanne Hvidtfeldt Christiansen. In: UNIS. Retrieved May 23, 2020 (English). 
5. ^ Eva Therese Jenssen: Increased focus on leadership within education and research. In: UNIS. September 11, 2018, accessed May 23, 2020 . 
6. ↑ International Permafrost Association (IPA) secretariat opened at UNIS. In: UNIS. December 1, 2016, accessed on May 23, 2020 . 
7. ↑ New knowledge about permafrost Improving climate models. In: UNIS. July 30, 2013, accessed May 23, 2020 . 
8. ^ Biskaborn, BK, Smith, SL, Noetzli, J. et al .: Permafrost is warming at a global scale . In: Nat Commun . doi : 10.1038 / s41467-018-08240-4 (English).