Zobrazeno 1 - 10
of 34
pro vyhledávání: '"T. A. Neumann"'
Publikováno v:
The Cryosphere, Vol 16, Pp 3971-4011 (2022)
Conversion of altimetry-derived ice-sheet volume change to mass requires an understanding of the evolution of the combined ice and air content within the firn column. In the absence of suitable techniques to observe the changes to the firn column acr
Externí odkaz:
https://doaj.org/article/cf51ae82b1974a16b0a606e5b9d53658
Autor:
M. Studinger, B. C. Medley, K. M. Brunt, K. A. Casey, N. T. Kurtz, S. S. Manizade, T. A. Neumann, T. B. Overly
Publikováno v:
The Cryosphere, Vol 14, Pp 3287-3308 (2020)
We use repeat high-resolution airborne geophysical data consisting of laser altimetry, snow, and Ku-band radar and optical imagery acquired in 2014, 2016, and 2017 to analyze the spatial and temporal variability in surface roughness, slope, wind depo
Externí odkaz:
https://doaj.org/article/bc397f91697e4b768dcc92818e0b5de6
Autor:
T. C. Sutterley, T. Markus, T. A. Neumann, M. van den Broeke, J. M. van Wessem, S. R. M. Ligtenberg
Publikováno v:
The Cryosphere, Vol 13, Pp 1801-1817 (2019)
We calculate rates of ice thickness change and bottom melt for ice shelves in West Antarctica and the Antarctic Peninsula from a combination of elevation measurements from NASA–CECS Antarctic ice mapping campaigns and NASA Operation IceBridge corre
Externí odkaz:
https://doaj.org/article/5aae4165a7004addaf4ad36e65bfd575
Autor:
C. J. Crawford, J. van den Bosch, K. M. Brunt, M. G. Hom, J. W. Cooper, D. J. Harding, J. J. Butler, P. W. Dabney, T. A. Neumann, C. S. Cleckner, T. Markus
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 1913-1933 (2019)
Methods to radiometrically calibrate a non-imaging airborne visible-to-shortwave infrared (VSWIR) spectrometer to measure the Greenland ice sheet surface are presented. Airborne VSWIR measurement performance for bright Greenland ice and dark bare roc
Externí odkaz:
https://doaj.org/article/ee52f9f7c01942d183b0900c0702e719
Publikováno v:
The Cryosphere, Vol 13, Pp 579-590 (2019)
We conducted a 750 km kinematic GPS survey, referred to as the 88S Traverse, based out of South Pole Station, Antarctica, between December 2017 and January 2018. This ground-based survey was designed to validate spaceborne altimetry and airborne al
Externí odkaz:
https://doaj.org/article/7b9afa7487454770ae4aad4bfcab7f67
Autor:
K. M. Brunt, R. L. Hawley, E. R. Lutz, M. Studinger, J. G. Sonntag, M. A. Hofton, L. C. Andrews, T. A. Neumann
Publikováno v:
The Cryosphere, Vol 11, Iss 2, Pp 681-692 (2017)
A series of NASA airborne lidars have been used in support of satellite laser altimetry missions. These airborne laser altimeters have been deployed for satellite instrument development, for spaceborne data validation, and to bridge the data gap betw
Externí odkaz:
https://doaj.org/article/be878dca7c0f4a3884ee105e3ce47e0e
Autor:
K. M. Brunt, T. A. Neumann, J. M. Amundson, J. L. Kavanaugh, M. S. Moussavi, K. M. Walsh, W. B. Cook, T. Markus
Publikováno v:
The Cryosphere, Vol 10, Iss 4, Pp 1707-1719 (2016)
Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) is scheduled to launch in late 2017 and will carry the Advanced Topographic Laser Altimeter System (ATLAS), which is a photon-counting laser altimeter and represents a new approach to satellite de
Externí odkaz:
https://doaj.org/article/d9fecdeb72ad42c1933bd7b7e19d5c32
Autor:
M. P. Lüthi, C. Ryser, L. C. Andrews, G. A. Catania, M. Funk, R. L. Hawley, M. J. Hoffman, T. A. Neumann
Publikováno v:
The Cryosphere, Vol 9, Iss 1, Pp 245-253 (2015)
Ice temperature profiles from the Greenland Ice Sheet contain information on the deformation history, past climates and recent warming. We present full-depth temperature profiles from two drill sites on a flow line passing through Swiss Camp, West Gr
Externí odkaz:
https://doaj.org/article/73cd743ffd624c7d9654623e1da22bdf
Autor:
B. F. Morriss, R. L. Hawley, J. W. Chipman, L. C. Andrews, G. A. Catania, M. J. Hoffman, M. P. Lüthi, T. A. Neumann
Publikováno v:
The Cryosphere, Vol 7, Iss 6, Pp 1869-1877 (2013)
The rapid drainage of supraglacial lakes introduces large pulses of meltwater to the subglacial environment and creates moulins, surface-to-bed conduits for future melt. Introduction of water to the subglacial system has been shown to affect ice flow
Externí odkaz:
https://doaj.org/article/76823ef745da4b7db1be3290c0d24cac
Autor:
M. M. Bisiaux, R. Edwards, J. R. McConnell, M. A. J. Curran, T. D. Van Ommen, A. M. Smith, T. A. Neumann, D. R. Pasteris, J. E. Penner, K. Taylor
Publikováno v:
Atmospheric Chemistry and Physics, Vol 12, Iss 9, Pp 4107-4115 (2012)
Refractory black carbon aerosols (rBC) emitted by biomass burning (fires) and fossil fuel combustion, affect global climate and atmospheric chemistry. In the Southern Hemisphere (SH), rBC is transported in the atmosphere from low- and mid-latitudes t
Externí odkaz:
https://doaj.org/article/95e05b6cabd84b4fa7d7623d40e99117