A5101534456- Cryospheric studies and observations
- Arctic and Antarctic ice dynamics
- Climate change and permafrost
- Soil Moisture and Remote Sensing
- Molecular Spectroscopy and Structure
- Advanced Chemical Physics Studies
- Atmospheric Ozone and Climate
- Spectroscopy and Laser Applications
The Ohio State University
2015-2022
Ocean University of China
2003
University of British Columbia
2003
University of Toyama
1998
An ultra-wideband radiometer has been developed to measure subsurface properties of the cryosphere including ice sheets and sea ice. The measures brightness temperature spectra from 0.5 2 GHz using 12 channels, each which scene temperatures over an ~88-MHz bandwidth resolved into 0.24-MHz intervals. instrument was flown northwestern Greenland in September 2016 acquired first, wideband, low-frequency sheet coastal region. results reveal strong spatial spectral variations that correlate well...
Ice sheet subsurface temperature is important for understanding glacier dynamics, yet existing methods to obtain the of ice column are limited <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">in situ</i> sources at present. The ultrawideband software-defined microwave radiometer (UWBRAD) has been developed investigate remote sensing internal temperatures. UWBRAD measures brightness spectra from 0.5 2 GHz using 12 subchannels and employs a...
The Ultra-wideband Software Defined Radiometer (UWBRAD) for ice sheet internal temperature sensing is designed to provide observations of brightness temperatures from 500-2000 MHz. This presentation reports on current status the instrument development, experimental results obtained date, and plans a September 2016 airborne deployment over Greenland.
Although ice sheet internal temperature is a first-order control on glacier dynamics, relatively few in situ borehole profiles exist. The ultra-wideband software-defined microwave radiometer (UWBRAD) was designed to estimate ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</i> <sub xmlns:xlink="http://www.w3.org/1999/xlink">i</sub> ) by measuring brightness temperatures xmlns:xlink="http://www.w3.org/1999/xlink">b</sub> from 0.5 GHz 2 GHz....
The Ultra-Wideband Software Defined Microwave Radiometer (UWBRAD) is a wideband radiometer operating from 0.5 to 2 GHz for remote sensing of polar ice sheet temperature profiles. Small-scale (cm m) fluctuations in firn density the upper portion significantly impact observed brightness temperatures. Previously, fully coherent model based on solving Maxwell’s equations thousands layers throughout entire was developed. Density profiles are described as sum smooth average profile with spatially...
The Ultra-Wideband Microwave Radiometer is a novel pseudo-correlation radiometer design measuring scene brightness temperatures from 0.5-2 GHz created under NASA's Instrument Incubator Program. This document analyzes the and operation of radiometer, accuracy stability it produces, presents initial results field campaign conducted in Greenland September 2016.
The Ultra-Wideband Software Defined Microwave Radiometer (UWBRAD) measures scene brightness temperatures from 0.5-2 GHz. UWBRAD was deployed in a September 2017 airborne campaign Greenland, and observed of the ice sheet as well sea ice, ocean surface, land regions during transit to Calgary, Canada (the aircraft base operations). This presentation will review datasets collected. Spectral features thermal emissions other geophysical are also examined obtain insight into utility GHz emission...
The ultra-wideband software-defined microwave radiometer (UWBRAD) is designed to provide ice sheet internal temperature by measuring low frequency emission. A Bayesian framework retrieve the from simulated UWBRAD brightness (Tb). Experiment results showed feasibility estimate and improvement of priors.