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    Calibration of Noah Soil Hydraulic Property Parameters Using Surface Soil Moisture from SMOS and Basinwide In Situ Observations

    Source: Journal of Hydrometeorology:;2016:;Volume( 017 ):;issue: 008::page 2275
    Author:
    Shellito, Peter J.
    ,
    Small, Eric E.
    ,
    Cosh, Michael H.
    DOI: 10.1175/JHM-D-15-0153.1
    Publisher: American Meteorological Society
    Abstract: oil hydraulic properties (SHPs) control infiltration and redistribution of moisture in a soil column. The Noah land surface model (LSM) default simulation selects SHPs according to a location?s mapped soil texture class. SHPs are instead estimated at seven sites in North America through calibration. A single-objective algorithm minimizes the root-mean-square difference (RMSD) between simulated surface soil moisture and observations from 1) a dense network of in situ probes, 2) Soil Moisture Ocean Salinity (SMOS) satellite retrievals, and 3) SMOS retrievals adjusted such that their mean equals that of the in situ network. Parameters are optimized in 2012 and validated in 2013 against the in situ network. RMSD and unbiased RMSD (ubRMSD) assess resulting surface soil moisture behavior. At all sites, assigning SHP parameters from a different soil texture than the one that is mapped decreases the RMSD by an average of 0.029 cm3 cm?3. Similar improvements result from calibrating parameters using in situ network data (0.031 cm3 cm?3). Calibrations using remotely sensed data show comparable success (0.029 cm3 cm?3) if the SMOS product has no bias. Calibrated simulations are superior to texture-based simulations in their ability to decrease ubRMSD at times of year when the default simulation is worst. Changes to both RMSD and ubRMSD are small when the default simulation is already good. Most calibrated simulations have higher runoff ratios than do texture-based simulations, a change that warrants further evaluation. Overall, parameter selection using SMOS data shows good potential where biases are low.
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      Calibration of Noah Soil Hydraulic Property Parameters Using Surface Soil Moisture from SMOS and Basinwide In Situ Observations

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4225418
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    contributor authorShellito, Peter J.
    contributor authorSmall, Eric E.
    contributor authorCosh, Michael H.
    date accessioned2017-06-09T17:16:47Z
    date available2017-06-09T17:16:47Z
    date copyright2016/08/01
    date issued2016
    identifier issn1525-755X
    identifier otherams-82317.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4225418
    description abstractoil hydraulic properties (SHPs) control infiltration and redistribution of moisture in a soil column. The Noah land surface model (LSM) default simulation selects SHPs according to a location?s mapped soil texture class. SHPs are instead estimated at seven sites in North America through calibration. A single-objective algorithm minimizes the root-mean-square difference (RMSD) between simulated surface soil moisture and observations from 1) a dense network of in situ probes, 2) Soil Moisture Ocean Salinity (SMOS) satellite retrievals, and 3) SMOS retrievals adjusted such that their mean equals that of the in situ network. Parameters are optimized in 2012 and validated in 2013 against the in situ network. RMSD and unbiased RMSD (ubRMSD) assess resulting surface soil moisture behavior. At all sites, assigning SHP parameters from a different soil texture than the one that is mapped decreases the RMSD by an average of 0.029 cm3 cm?3. Similar improvements result from calibrating parameters using in situ network data (0.031 cm3 cm?3). Calibrations using remotely sensed data show comparable success (0.029 cm3 cm?3) if the SMOS product has no bias. Calibrated simulations are superior to texture-based simulations in their ability to decrease ubRMSD at times of year when the default simulation is worst. Changes to both RMSD and ubRMSD are small when the default simulation is already good. Most calibrated simulations have higher runoff ratios than do texture-based simulations, a change that warrants further evaluation. Overall, parameter selection using SMOS data shows good potential where biases are low.
    publisherAmerican Meteorological Society
    titleCalibration of Noah Soil Hydraulic Property Parameters Using Surface Soil Moisture from SMOS and Basinwide In Situ Observations
    typeJournal Paper
    journal volume17
    journal issue8
    journal titleJournal of Hydrometeorology
    identifier doi10.1175/JHM-D-15-0153.1
    journal fristpage2275
    journal lastpage2292
    treeJournal of Hydrometeorology:;2016:;Volume( 017 ):;issue: 008
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian