Journal Articles

[1] X. Xu, D. Liang, L. Tsang, K.M. Andreadis, E. G. Josberger, D. P. Lettenmaier, D. W. Cline and S. Yueh, "Active Remote Sensing of Snow using NMM3D/DMRT and Comparison with CLPX II airborne data", submitted to IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, special issue on: Microwave Remote Sensing for Land Hydrology Research and Applications., March 2009

[2] K. H. Ding, X. Xu and L. Tsang, "Electromagnetic Scattering by Bicontinuous Random Microstructures with Discrete Permittivities", IEEE Transaction on Geoscience Remote Sensing, accepted, Oct 2009.

[3] D. Liang, X. Xu, L. Tsang, K. M. Andreadis and E. G. Josberger, "The Effects of Layers in Dry Snow on its Passive Microwave Emissions Using Dense Media Radiative Transfer Theory Based on Quasicrystalline Approximation(QCA/DMRT)", IEEE Transaction on Geoscience Remote Sensing, Volume 46, Issue 11, Part 2, Page(s):3663 - 3671, Nov. 2008

Conference Paper (*Presented)

[1] X. Xu*, K. H. Ding and L. Tsang, "Physical Model of Microwave Remote Sensing of Dry Snow using the Bi-continuous random Media", IEEE International Geoscience & Remote Sensing Symposium, Cape Town, South Africa, July 12-17, 2009.

Won Second Prize at student prize paper competition.

[2] X. Xu*, D. Liang, K.M. Andreadis, L. Tsang and E.G. Josberger, "Comparison with CLPX II Airborne Data at Alaska and Colorado with DMRT Theory", IEEE International Geoscience & Remote Sensing Symposium, Cape Town, South Africa, July 12-17, 2009.

[3] X. Xu and L. Tsang, "Frequency and Polarization Dependence of Scattering in Bi-continuous Random Media Model with Application to Snow", Progress In Electromagnetics Research Symposium, Moscow, August, 2009.

[4] X. Xu and L. Tsang, "Physical Model of Microwave Remote Sensing of Snow Using the Bi-continuous Random Media Model", Progress In Electromagnetics Research Symposium, Beijing, March 2009.

[5] L. Tsang, D. Liang, X. Xu and P. Xu "Microwave emission from snow packs: modeling the effects of volume scattering, surface scattering and layering", Microwave Radiometry and Remote Sensing of the Environment, Florence, Italy, March 2008.

[6] D. Liang, L.Tsang, S. Yueh, X. Xu, "Modeling Active Microwave Remote Sensing of Multilayer Dry Snow using Dense Media Radiative Transfer Theory", IEEE International Geoscience & Remote Sensing Symposium, Boston, July 2008.

[7] W. Yan, X. Xu, Y. Du, F. Sheng, Z. Li, J.A. Kong, " A Two-Scale Model for Composite Rough Surface Bistatic Scattering ", Proceedings of IEEE International Geoscience and Remote Sensing Symposium (IGARSS), pp2939-2942, Denver, July 31- Aug 04, 2006.

Field Experiment

(February 11 through February 18, 2009)

GROUND ACTIVE AND PASSIVE SNOW EXPERIMENT 2009

The aims of experiment is to collect concurrent ground-based active (Ku-band) and passive (Ka-band) data over snow covered terrain for improving models of active/passive microwave data, refining retrieval approaches based on passive microwave (PMW) data from satellite data (e.g., AMSR-E), developing and refining combined active/passive retrieval of snow parameters (in particular SWE, snow depth and grain size) from MW observations from the synergic use of currently orbiting satellite sensors and potential future missions (e.g., COREH2O, SCLP). Together with microwave data, other data sets will be collected.

The intensive study area (ISA) is located in Stanley, IDAHO. The Sawtooth Valley, drained by the upper Salmon River, is centered on Stanley, ID, about 40 miles north of Sun Valley. The high altitude (elevation ~2000 m) valley is broad, flat and mostly unvegetated in winter. In narrower areas, hillsides are tree-covered, providing some shading of the valley floor.