Polar sea ice thickness and melt pond fraction measurements with multi-frequency bistatic radar polarimetric and interferometric reflectometry
Visualitza/Obre
08900079.pdf (139,1Kb) (Accés restringit)
Sol·licita una còpia a l'autor
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
10.1109/IGARSS.2019.8900079
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/178102
Tipus de documentComunicació de congrés
Data publicació2019
EditorInstitute of Electrical and Electronics Engineers (IEEE)
Condicions d'accésAccés restringit per política de l'editorial
Tots els drets reservats. Aquesta obra està protegida pels drets de propietat intel·lectual i
industrial corresponents. Sense perjudici de les exempcions legals existents, queda prohibida la seva
reproducció, distribució, comunicació pública o transformació sense l'autorització del titular dels drets
Abstract
Arctic and Antarctic sea ice covers are in a sharp contrast in terms of characteristics, distributions, and processes with a drastic decrease in the Arctic versus the opposite increase in the Antarctic in a changing climate. In quantifying polar sea ice differences to address the contrasted sea ice behaviors, two key parameters are sea ice thickness and melt pond fraction, which remain challenging to measure extensively in time and in space with a sustainable approach. Here, we present a new paradigm for such measurements using bistatic radar reflectometry, thanks to developments of low-cost receivers to acquire reflected signals from numerous existing transmitter systems operated at multiple frequencies to be replenished and sustained indefinitely into the future. For sea ice thickness measurement to determine ice volume, reflected signals likely come from the bottom ice-water interface avoiding large errors inherent in current altimetry techniques due to uncertainty in free-board height and snow cover. Regarding melt pond faction on sea ice to estimate albedo and insolation, the bistatic reflection can be dominated by melt pond water with permittivity that is one order of magnitude larger compared to that of snow or ice. These are examined by a combination of numerical Kirchhoff (KA) simulator and Numerical Maxwell Model of 3D simulations (NMM3D) to preserve phase and amplitude information and thereby account for both coherent and incoherent effects. Physical insights from the rigorous theory for bistatic radar reflectometry will be valuable to develop future satellite missions to resolve cryospheric science issues concerning the polar sea ice differences.
CitacióNghiem, S. V. [et al.]. Polar sea ice thickness and melt pond fraction measurements with multi-frequency bistatic radar polarimetric and interferometric reflectometry. A: IEEE International Geoscience and Remote Sensing Symposium. "2019 IEEE International Geoscience & Remote Sensing Symposium: proceedings: July 28-August 2, 2019: Yokohama, Japan". Institute of Electrical and Electronics Engineers (IEEE), 2019, p. 4012-4015.
ISBN978-1-5386-9155-7
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
08900079.pdf | 139,1Kb | Accés restringit |