Your search - This study has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 727890 and from Agencia Estatal de Investig- ación under grant CTM2017-84441-R of the Spanish Estate Plan for R & D. Support to AG by the Russian Fund for Basic Research grant 18-05-60109 is also acknowledged. DEMs were provided by the Polar Geospatial Center under NSF OPP awards 1043681, 1559691 and 1542736. - did not match any resources.