Surface-based Ku- and Ka-band polarimetric radar for sea ice studies
-
Published:2020-12-04
Issue:12
Volume:14
Page:4405-4426
-
ISSN:1994-0424
-
Container-title:The Cryosphere
-
language:en
-
Short-container-title:The Cryosphere
Author:
Stroeve Julienne, Nandan Vishnu, Willatt RosemaryORCID, Tonboe Rasmus, Hendricks StefanORCID, Ricker RobertORCID, Mead James, Mallett RobbieORCID, Huntemann Marcus, Itkin Polona, Schneebeli MartinORCID, Krampe DanielaORCID, Spreen GunnarORCID, Wilkinson Jeremy, Matero IlkkaORCID, Hoppmann MarioORCID, Tsamados Michel
Abstract
Abstract. To improve our understanding of how snow properties influence sea
ice thickness retrievals from presently operational and upcoming satellite
radar altimeter missions, as well as to investigate the potential for
combining dual frequencies to simultaneously map snow depth and sea ice
thickness, a new, surface-based, fully polarimetric Ku- and Ka-band radar
(KuKa radar) was built and deployed during the 2019–2020 year-long MOSAiC
international Arctic drift expedition. This instrument, built to operate
both as an altimeter (stare mode) and as a scatterometer (scan mode),
provided the first in situ Ku- and Ka-band dual-frequency radar observations from
autumn freeze-up through midwinter and covering newly formed ice in leads and
first-year and second-year ice floes. Data gathered in the altimeter mode
will be used to investigate the potential for estimating snow depth as the
difference between dominant radar scattering horizons in the Ka- and Ku-band
data. In the scatterometer mode, the Ku- and Ka-band radars operated under a
wide range of azimuth and incidence angles, continuously assessing
changes in the polarimetric radar backscatter and derived polarimetric
parameters, as snow properties varied under varying atmospheric conditions.
These observations allow for characterizing radar backscatter responses to
changes in atmospheric and surface geophysical conditions. In this paper, we
describe the KuKa radar, illustrate examples of its data and
demonstrate their potential for these investigations.
Funder
Natural Environment Research Council European Space Agency
Publisher
Copernicus GmbH
Subject
Earth-Surface Processes,Water Science and Technology
Reference71 articles.
1. Armitage, T. W. and Ridout, A. L.: Arctic sea ice freeboard from AltiKa
and comparison with CryoSat-2 and Operation IceBridge, Geophys. Res. Lett., 42, 6724–6731, 2015. 2. Barber, D. G. and Nghiem, S. V.: The role of snow on the thermal
dependence of microwave backscatter over sea ice, J. Geophys. Res.-Oceans, 104, 25789–5803, 1999. 3. Barber, D. G., Fung, A. K., Grenfell, T. C., Nghiem, S. V., Onstott, R. G., Perovich, D. K.,
Lytle, V. I., and Gow, A. J.: The role of snow on microwave emission
and scattering over first-year sea ice, IEEE T. Geosci. Remote, 36, 1750–1763, 1998. 4. Beaven, S. G., Lockhart, G. L., Gogineni, S. P., Hosseinmostafa, A. R.,
Jezek, K., Gow, A. J., Preovich, D. K., Fung, A. K., and Tjuatja, S.: Laboratory measurements of
radar backscatter from bare and snow-covered saline ice sheets,
Int. J. Remote Sens., 16, 851–876, 1995. 5. Bluhm, B. A., Swadling, K. M., and Gradinger, R.: Sea ice as a habitat for macrograzers, Sea Ice, 3, 394–414, 2017.
Cited by
18 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|