Zobrazeno 1 - 10
of 365
pro vyhledávání: '"T. Kurtz"'
Autor:
R. Ricker, S. Fons, A. Jutila, N. Hutter, K. Duncan, S. L. Farrell, N. T. Kurtz, R. M. Fredensborg Hansen
Publikováno v:
The Cryosphere, Vol 17, Pp 1411-1429 (2023)
Information about sea ice surface topography and related deformation is crucial for studies of sea ice mass balance, sea ice modeling, and ship navigation through the ice pack. The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2), part of the Na
Externí odkaz:
https://doaj.org/article/47ede053497a4d58a2a046038c0d6461
Publikováno v:
The Cryosphere, Vol 15, Pp 4909-4927 (2021)
In the Arctic, multi-year sea ice is being rapidly replaced by seasonal sea ice. Baffin Bay, situated between Greenland and Canada, is part of the seasonal ice zone. In this study, we present a long-term multi-mission assessment (2003–2020) of spri
Externí odkaz:
https://doaj.org/article/42b6846418f44f2c8cf654d64361c64a
Publikováno v:
The Cryosphere, Vol 15, Pp 821-833 (2021)
In Release 001 and 002 of the ICESat-2 sea ice products, candidate height segments used to estimate the reference sea surface height for freeboard calculations included two surface types: specular and smooth dark leads. We found that the uncorrected
Externí odkaz:
https://doaj.org/article/2035509ee9e04bc793cf11e70295b159
Autor:
Xiaomei Lu, Yongxiang Hu, Xubin Zeng, Snorre A. Stamnes, Thomas A. Neuman, Nathan T. Kurtz, Yuekui Yang, Peng-Wang Zhai, Meng Gao, Wenbo Sun, Kuanman Xu, Zhaoyan Liu, Ali H. Omar, Rosemary R. Baize, Laura J. Rogers, Brandon O. Mitchell, Knut Stamnes, Yuping Huang, Nan Chen, Carl Weimer, Jennifer Lee, Zachary Fair
Publikováno v:
Frontiers in Remote Sensing, Vol 3 (2022)
The application of diffusion theory and Monte Carlo lidar radiative transfer simulations presented in Part I of this series of study suggests that snow depth can be derived from the first-, second- and third-order moments of the lidar backscattering
Externí odkaz:
https://doaj.org/article/5430fed14ed84b4bbabb36438d341313
Autor:
Yongxiang Hu, Xiaomei Lu, Xubin Zeng, Snorre A Stamnes, Thomas A. Neuman, Nathan T. Kurtz, Pengwang Zhai, Meng Gao, Wenbo Sun, Kuanman Xu, Zhaoyan Liu, Ali H. Omar, Rosemary R. Baize, Laura J. Rogers, Brandon O. Mitchell, Knut Stamnes, Yuping Huang, Nan Chen, Carl Weimer, Jennifer Lee, Zachary Fair
Publikováno v:
Frontiers in Remote Sensing, Vol 3 (2022)
Snow is a crucial element in the Earth’s system, but snow depth and mass are very challenging to be measured globally. Here, we provide the theoretical foundation for deriving snow depth directly from space-borne lidar (ICESat-2) snow multiple scat
Externí odkaz:
https://doaj.org/article/7a0dcd363ef74e4d97f1c83170af348f
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
Publikováno v:
Earth and Space Science, Vol 8, Iss 7, Pp n/a-n/a (2021)
Abstract NASA's Ice, Cloud, and land Elevation Satellite‐2 (ICESat‐2) laser altimeter launched in Fall 2018, providing an invaluable addition to the polar altimetry record generated by ESA's CryoSat‐2 radar altimeter. The simultaneous operation
Externí odkaz:
https://doaj.org/article/0d44e5af71a647f5905410a2aa4a78ca
Autor:
D. O. Dammann, L. E. B. Eriksson, S. V. Nghiem, E. C. Pettit, N. T. Kurtz, J. G. Sonntag, T. E. Busche, F. J. Meyer, A. R. Mahoney
Publikováno v:
The Cryosphere, Vol 13, Pp 1861-1875 (2019)
Icebergs in polar regions affect water salinity, alter marine habitats, and impose serious hazards on maritime operations and navigation. These impacts mainly depend on the iceberg volume, which remains an elusive parameter to measure. We investigate
Externí odkaz:
https://doaj.org/article/91ea9b244a5c4949a95d64119e27d384
Autor:
S. W. Fons, N. T. Kurtz
Publikováno v:
The Cryosphere, Vol 13, Pp 861-878 (2019)
In this paper we develop a CryoSat-2 algorithm to retrieve the surface elevation of the air–snow interface over Antarctic sea ice. This algorithm utilizes a two-layer physical model that accounts for scattering from a snow layer atop sea ice as wel
Externí odkaz:
https://doaj.org/article/6bcf9a2aaea244559950a2dbc6f5d192
Publikováno v:
Earth and Space Science, Vol 8, Iss 3, Pp n/a-n/a (2021)
Abstract NASA's Ice, Cloud, and Land Elevation Satellite‐2 (ICESat‐2) mission launched in September 2018 and is now providing high‐resolution surface elevation profiling across the entire globe, including the sea ice cover of the Arctic and Sou
Externí odkaz:
https://doaj.org/article/b5c3e0fecd50475aa28c1608b8e5c886