YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • AMS
    • Journal of Hydrometeorology
    • View Item
    •   YE&T Library
    • AMS
    • Journal of Hydrometeorology
    • View Item
    • All Fields
    • Source Title
    • Year
    • Publisher
    • Title
    • Subject
    • Author
    • DOI
    • ISBN
    Advanced Search
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Archive

    Multiscale Evaluation of the Improvements in Surface Snow Simulation through Terrain Adjustments to Radiation

    Source: Journal of Hydrometeorology:;2012:;Volume( 014 ):;issue: 001::page 220
    Author:
    Kumar, Sujay V.
    ,
    Peters-Lidard, Christa D.
    ,
    Mocko, David
    ,
    Tian, Yudong
    DOI: 10.1175/JHM-D-12-046.1
    Publisher: American Meteorological Society
    Abstract: he downwelling shortwave radiation on the earth?s land surface is affected by the terrain characteristics of slope and aspect. These adjustments, in turn, impact the evolution of snow over such terrain. This article presents a multiscale evaluation of the impact of terrain-based adjustments to incident shortwave radiation on snow simulations over two midlatitude regions using two versions of the Noah land surface model (LSM). The evaluation is performed by comparing the snow cover simulations against the 500-m Moderate Resolution Imaging Spectroradiometer (MODIS) snow cover product. The model simulations are evaluated using categorical measures, such as the probability of detection of ?yes? events (PODy), which measure the fraction of snow cover presence that was correctly simulated, and false alarm ratio (FAR), which measures the fraction of no-snow events that was incorrectly simulated. The results indicate that the terrain-based correction of radiation leads to systematic improvements in the snow cover estimates in both domains and in both LSM versions (with roughly 12% overall improvement in PODy and 5% improvement in FAR), with larger improvements observed during snow accumulation and melt periods. Increased contribution to PODy and FAR improvements is observed over the north- and south-facing slopes, when the overall improvements are stratified to the four cardinal aspect categories. A two-dimensional discrete Haar wavelet analysis for the two study areas indicates that the PODy improvements in snow cover estimation drop to below 10% at scales coarser than 16 km, whereas the FAR improvements are below 10% at scales coarser than 4 km.
    • Download: (1000.Kb)
    • Show Full MetaData Hide Full MetaData
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Multiscale Evaluation of the Improvements in Surface Snow Simulation through Terrain Adjustments to Radiation

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4224915
    Collections
    • Journal of Hydrometeorology

    Show full item record

    contributor authorKumar, Sujay V.
    contributor authorPeters-Lidard, Christa D.
    contributor authorMocko, David
    contributor authorTian, Yudong
    date accessioned2017-06-09T17:15:08Z
    date available2017-06-09T17:15:08Z
    date copyright2013/02/01
    date issued2012
    identifier issn1525-755X
    identifier otherams-81865.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4224915
    description abstracthe downwelling shortwave radiation on the earth?s land surface is affected by the terrain characteristics of slope and aspect. These adjustments, in turn, impact the evolution of snow over such terrain. This article presents a multiscale evaluation of the impact of terrain-based adjustments to incident shortwave radiation on snow simulations over two midlatitude regions using two versions of the Noah land surface model (LSM). The evaluation is performed by comparing the snow cover simulations against the 500-m Moderate Resolution Imaging Spectroradiometer (MODIS) snow cover product. The model simulations are evaluated using categorical measures, such as the probability of detection of ?yes? events (PODy), which measure the fraction of snow cover presence that was correctly simulated, and false alarm ratio (FAR), which measures the fraction of no-snow events that was incorrectly simulated. The results indicate that the terrain-based correction of radiation leads to systematic improvements in the snow cover estimates in both domains and in both LSM versions (with roughly 12% overall improvement in PODy and 5% improvement in FAR), with larger improvements observed during snow accumulation and melt periods. Increased contribution to PODy and FAR improvements is observed over the north- and south-facing slopes, when the overall improvements are stratified to the four cardinal aspect categories. A two-dimensional discrete Haar wavelet analysis for the two study areas indicates that the PODy improvements in snow cover estimation drop to below 10% at scales coarser than 16 km, whereas the FAR improvements are below 10% at scales coarser than 4 km.
    publisherAmerican Meteorological Society
    titleMultiscale Evaluation of the Improvements in Surface Snow Simulation through Terrain Adjustments to Radiation
    typeJournal Paper
    journal volume14
    journal issue1
    journal titleJournal of Hydrometeorology
    identifier doi10.1175/JHM-D-12-046.1
    journal fristpage220
    journal lastpage232
    treeJournal of Hydrometeorology:;2012:;Volume( 014 ):;issue: 001
    contenttypeFulltext
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian