Assimilating MODIS and AMSR-E Snow Observations in a Snow Evolution Model
نویسندگان
چکیده
منابع مشابه
A Comparison of AMSR-E/Aqua Snow Products with in situ Observations and MODIS Snow Cover Products in the Mackenzie River Basin, Canada
Since 2002, global snow water equivalent (SWE) estimates have been generated using Advanced Microwave Scanning Radiometer (AMSR-E)/Aqua data. Accurate estimates of SWE are important to improve monitoring and managing of water resources in specific regions. SWE and snow map product accuracy are functions of topography and of land cover type because landscape characteristics have a strong influen...
متن کاملToward improved daily snow cover mapping with advanced combination of MODIS and AMSR-E measurements
Article history: Taking three snow seasons f Received 4 February 2008 Received in revised form 20 May 2008 Accepted 24 May 2008 Available online xxxx
متن کاملA prototype AMSR-E global snow area and snow depth algorithm
A methodologically simple approach to estimate snow depth from spaceborne microwave instruments is described. The scattering signal observed in multifrequency passive microwave data is used to detect snow cover. Wet snow, frozen ground, precipitation, and other anomalous scattering signals are screened using established methods. The results from two different approaches (a simple time and conti...
متن کاملEstimation of snow water equivalent over first-year sea ice using AMSR-E and surface observations
Keywords: Snow water equivalent Arctic First-year sea ice Passive microwaves Surface based radiometer AMSR-E Ice roughness Climate change A SWE retrieval algorithm developed in-situ using passive microwave surface based radiometer data is applied to the Advanced Microwave Scanning Radiometer for Earth Observation System (AMSR-E). Snow water equivalent is predicted from two pixels located in Can...
متن کاملEnhancing the estimation of continental-scale snow water equivalent by assimilating MODIS snow cover with the ensemble Kalman filter
[1] High-quality continental-scale snow water equivalent (SWE) data sets are generally not available, although they are important for climate research and water resources management. This study investigates the feasibility of a framework for developing such needed data sets over North America, through the ensemble Kalman filter (EnKF) approach, which assimilates the snow cover fraction observed...
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ژورنال
عنوان ژورنال: Journal of Hydrometeorology
سال: 2012
ISSN: 1525-755X,1525-7541
DOI: 10.1175/jhm-d-11-082.1