Firn data compilation reveals widespread decrease of firn air content in western Greenland
نویسندگان
چکیده
منابع مشابه
Georadar-derived estimates of firn density in the percolation zone, western Greenland ice sheet
[1] Greater understanding of variations in firn densification is needed to distinguish between dynamic and melt-driven elevation changes on the Greenland ice sheet. This is especially true in Greenland’s percolation zone, where firn density profiles are poorly documented because few ice cores are extracted in regions with surface melt. We used georadar to investigate firn density variations wit...
متن کاملHydraulic Conductivity of a Firn Aquifer in Southeast Greenland
1 Department of Geology and Geophysics, University of Utah, Salt Lake City, UT, United States, 2 Geography Department, University of Utah, Salt Lake City, UT, United States, 3 National Snow and Ice Data Center, University of Colorado Boulder, Boulder, CO, United States, 4 Department of Geology, University of Maryland, College Park, College Park, MD, United States, 5 Institute for Marine and Atm...
متن کاملChanges in the firn structure of the western Greenland Ice Sheet caused by recent warming
Atmospheric warming over the Greenland Ice Sheet during the last 2 decades has increased the amount of surface meltwater production, resulting in the migration of melt and percolation regimes to higher altitudes and an increase in the amount of ice content from refrozen meltwater found in the firn above the superimposed ice zone. Here we present field and airborne radar observations of buried i...
متن کاملA 60 yr record of atmospheric carbon monoxide reconstructed from Greenland firn air
We present the first reconstruction of the Northern Hemisphere (NH) high latitude atmospheric carbon monoxide (CO) mole fraction from Greenland firn air. Firn air samples were collected at three deep ice core sites in Greenland (NGRIP in 2001, Summit in 2006 and NEEM in 2008). CO records from the three sites agree well with each other as well as with recent atmospheric measurements, indicating ...
متن کاملAtmospheric trends of the halon gases from polar firn air
Atmospheric trends of the halon gases from polar firn air C. E. Reeves, W. T. Sturges, G. A. Sturrock, K. Preston, D. E. Oram, J. Schwander, R. Mulvaney, J.-M. Barnola, and J. Chappellez School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ, UK Physics Institute, University of Berne, Berne, Switzerland British Antarctic Survey, Natural Environment Research Council, Cambr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Cryosphere
سال: 2019
ISSN: 1994-0424
DOI: 10.5194/tc-13-845-2019