Interpretation of AMSU microwave measurements for the retrievals of snow water equivalent and snow depth
نویسندگان
چکیده
منابع مشابه
Evaluation of SNODAS snow depth and snow water equivalent estimates for the Colorado Rocky Mountains, USA
The National Weather Service’s Snow Data Assimilation (SNODAS) program provides daily, gridded estimates of snow depth, snow water equivalent (SWE), and related snow parameters at a 1-km resolution for the conterminous USA. In this study, SNODAS snow depth and SWE estimates were compared with independent, ground-based snow survey data in the Colorado Rocky Mountains to assess SNODAS accuracy at...
متن کاملUltra-broadband portable microwave FMCW radars for measuring snow depth, snow water equivalent, and stratigraphy: practical considerations
The properties of seasonal snow and near surface polar firn can be measured using radars operating at the microwave frequencies. These frequencies offer an optimal combination of bandwidth and penetration required for snow studies. Because the velocity of microwave signals in dry snow and firn is primarily controlled by density, wave travel times can be converted to snow depth, snow water equiv...
متن کاملCorrelation and Prediction of Snow Water Equivalent from Snow Sensors
Since 1982, under an agreement between the California Department of Water Resources and the USDA Forest Service, snow sensors have been installed and operated in Forest Service-administered wilderness areas in the Sierra Nevada of California. The sensors are to be removed by 2005 because of the premise that sufficient data will have been collected to allow "correlation" and, by implication, pre...
متن کاملQuantifying the uncertainty in passive microwave snow water equivalent observations
Code 974, Hydrological Sciences Branch, Laboratory for Hydrospheric Processes, NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USA Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USA Goddard Earth Sciences and Technology Center, University of Maryland Baltimore County, Baltimore, MD 21250, USA Department of Civil and Environmental Enginee...
متن کاملP5.22 Development and Evaluation of the Amsu-based Snow Water Equivalent Retrieval Algorithm
The estimation of snow water equivalent (SWE) from passive microwave sensors remains a formidable challenge primarily due to the non-unique nature of the microwave scattering signatures over snow cover surfaces. Ideally, there is a straightforward relationship between the volume of snow crystals present in the snow pack, and hence, SWE or snow depth, and the degree of microwave scattering by ic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 2004
ISSN: 0148-0227
DOI: 10.1029/2004jd004836