Ice thickness effects on Aquarius brightness temperatures over Antarctica
نویسندگان
چکیده
منابع مشابه
Ice thickness effects on Aquarius brightness temperatures over Antarctica
The Dome-C region, in the East Antarctic Plateau, is regarded as an ideal natural laboratory for calibration/validation of space-borne microwave radiometers. At L-band, the thermal stability of this region has been confirmed by several experimental campaigns. However, its use as an independent external calibration target has recently been questioned due to some spatial inhomogeneities and seaso...
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[1] The Microwave Imaging Radiometer using Aperture Synthesis (MIRAS) on board the European Space Agency’s (ESA) Soil Moisture and Ocean Salinity (SMOS) mission for the first time measures globally Earth’s radiation at a frequency of 1.4 GHz (L-band). It had been hypothesized that L-band radiometry can be used to measure the sea ice thickness due to the large penetration depth in the sea ice me...
متن کاملPersistent surface snowmelt over Antarctica (1987–2006) from 19.35 GHz brightness temperatures
[1] Persistent melting (e.g., continuing for more than three days or for one consecutive day and night) is mapped in Antarctica (1987–2006) using nightand day-time Special Sensor Microwave Imager brightness temperatures (Tb) at 19.35 GHz, horizontal polarization. Snowmelt is indicated when Tb and relative daily difference exceed threshold values, respectively Tc andDT, computed for each pixel a...
متن کاملL-band ice-sheet brightness temperatures at Dome C, Antarctica: spectral emission modelling, temporal stability and impact of the ionosphere
The temporal thermal stability, size, structure and spatial uniformity of Antarctic Plateau regions such as Dome C make them ideal candidates for external calibration and validation, or radiometric performance monitoring of planned space-borne L-band radiometers such as the Soil Moisture and Ocean Salinity (SMOS) radiometer. As experimental observations do not exist at this frequency, a combina...
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A 1-D ice cover model was developed to predict and constrain drivers of long-term ice thickness trends in chemically stratified lakes of Taylor Valley, Antarctica. The model is driven by surface radiative heat fluxes and heat fluxes from the underlying water column. The model successfully reproduced 16 a (between 1996 and 2012) of ice thickness changes for the west lobe of Lake Bonney (average ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Oceans
سال: 2015
ISSN: 2169-9275
DOI: 10.1002/2014jc010151