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    Investigation of Large-Scale Atmospheric Moisture Budget and Land Surface Interactions over U.S. Southern Great Plains including for CLASIC (June 2007)

    Source: Journal of Hydrometeorology:;2012:;Volume( 013 ):;issue: 006::page 1719
    Author:
    Lamb, Peter J.
    ,
    Portis, Diane H.
    ,
    Zangvil, Abraham
    DOI: 10.1175/JHM-D-12-01.1
    Publisher: American Meteorological Society
    Abstract: he atmospheric moisture budget and surface interactions for the southern Great Plains are evaluated for contrasting May?June periods (1998, 2002, 2006, and 2007) as background for the Cloud and Land Surface Interaction Campaign (CLASIC) of (wet) 7?30 June 2007. Budget components [flux divergence (MFD), storage change (dPW), and inflow (IF/A)] are estimated from North American Regional Reanalysis data. Precipitation (P) is calculated from NCEP daily gridded data, evapotranspiration (E) is obtained as moisture budget equation residual, and the recycling ratio (PE/P) is estimated using a new equation. Regional averages are presented for months and five daily P categories. Monthly budget results show that E and E ? P are strongly positively related to P; E ? P generally is positive and balanced by positive MFD that results from its horizontal velocity divergence component (HD, positive) exceeding its horizontal advection component (HA, negative). An exception is 2007 (CLASIC), when E ? P and MFD are negative and supported primarily by negative HA. These overall monthly results characterize low P days (≤0.6 mm), including for nonanomalous 2007, but weaken as daily P approaches 4 mm. In contrast, for 4 < P ≤ 8 mm day?1 E ? P and MFD are moderately negative and balanced largely by negative HD except in 2007 (negative HA). This overall pattern was accentuated (including for nonanomalous 2007) when daily P > 8 mm. Daily PE/P ratios are small and of limited range, with P category averages 0.15?0.19. Ratios for 2007 are above average only for daily P ≤ 4 mm. CLASIC wetness principally resulted from distinctive MFD characteristics. Solar radiation, soil moisture, and crop status/yield information document surface interactions.
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      Investigation of Large-Scale Atmospheric Moisture Budget and Land Surface Interactions over U.S. Southern Great Plains including for CLASIC (June 2007)

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4224807
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    contributor authorLamb, Peter J.
    contributor authorPortis, Diane H.
    contributor authorZangvil, Abraham
    date accessioned2017-06-09T17:14:48Z
    date available2017-06-09T17:14:48Z
    date copyright2012/12/01
    date issued2012
    identifier issn1525-755X
    identifier otherams-81768.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4224807
    description abstracthe atmospheric moisture budget and surface interactions for the southern Great Plains are evaluated for contrasting May?June periods (1998, 2002, 2006, and 2007) as background for the Cloud and Land Surface Interaction Campaign (CLASIC) of (wet) 7?30 June 2007. Budget components [flux divergence (MFD), storage change (dPW), and inflow (IF/A)] are estimated from North American Regional Reanalysis data. Precipitation (P) is calculated from NCEP daily gridded data, evapotranspiration (E) is obtained as moisture budget equation residual, and the recycling ratio (PE/P) is estimated using a new equation. Regional averages are presented for months and five daily P categories. Monthly budget results show that E and E ? P are strongly positively related to P; E ? P generally is positive and balanced by positive MFD that results from its horizontal velocity divergence component (HD, positive) exceeding its horizontal advection component (HA, negative). An exception is 2007 (CLASIC), when E ? P and MFD are negative and supported primarily by negative HA. These overall monthly results characterize low P days (≤0.6 mm), including for nonanomalous 2007, but weaken as daily P approaches 4 mm. In contrast, for 4 < P ≤ 8 mm day?1 E ? P and MFD are moderately negative and balanced largely by negative HD except in 2007 (negative HA). This overall pattern was accentuated (including for nonanomalous 2007) when daily P > 8 mm. Daily PE/P ratios are small and of limited range, with P category averages 0.15?0.19. Ratios for 2007 are above average only for daily P ≤ 4 mm. CLASIC wetness principally resulted from distinctive MFD characteristics. Solar radiation, soil moisture, and crop status/yield information document surface interactions.
    publisherAmerican Meteorological Society
    titleInvestigation of Large-Scale Atmospheric Moisture Budget and Land Surface Interactions over U.S. Southern Great Plains including for CLASIC (June 2007)
    typeJournal Paper
    journal volume13
    journal issue6
    journal titleJournal of Hydrometeorology
    identifier doi10.1175/JHM-D-12-01.1
    journal fristpage1719
    journal lastpage1738
    treeJournal of Hydrometeorology:;2012:;Volume( 013 ):;issue: 006
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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