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    Can the Deforestation Breeze Change the Rainfall in Amazonia? A Case Study for the BR-163 Highway Region

    Source: Earth Interactions:;2010:;volume( 014 ):;issue: 018::page 1
    Author:
    Saad, Sandra I.
    ,
    da Rocha, Humberto R.
    ,
    Silva Dias, Maria A. F.
    ,
    Rosolem, Rafael
    DOI: 10.1175/2010EI351.1
    Publisher: American Meteorological Society
    Abstract: The authors simulated the effects of Amazonian mesoscale deforestation in the boundary layer and in rainfall with the Brazilian Regional Atmospheric Modeling System (BRAMS) model. They found that both the area and shape (with respect to wind incidence) of deforestation and the soil moisture status contributed to the state of the atmosphere during the time scale of several weeks, with distinguishable patterns of temperature, humidity, and rainfall. Deforestation resulted in the development of a three-dimensional thermal cell, the so-called deforestation breeze, slightly shifted downwind to large-scale circulation. The boundary layer was warmer and drier above 1000-m height and was slightly wetter up to 2000-m height. Soil wetness affected the circulation energetics proportionally to the soil dryness (for soil wetness below ?0.6). The shape of the deforestation controlled the impact on rainfall. The horizontal strips lined up with the prevailing wind showed a dominant increase in rainfall, significant up to about 60 000 km2. On the other hand, in the patches aligned in the opposite direction (north?south), there was both increase and decrease in precipitation in two distinct regions, as a result of clearly separated upward and downward branches, which caused the precipitation to increase for patches up to 15 000 km2. The authors? estimates for the size of deforestation impacting the rainfall contributed to fill up the low spatial resolution in other previous studies.
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      Can the Deforestation Breeze Change the Rainfall in Amazonia? A Case Study for the BR-163 Highway Region

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4211663
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    contributor authorSaad, Sandra I.
    contributor authorda Rocha, Humberto R.
    contributor authorSilva Dias, Maria A. F.
    contributor authorRosolem, Rafael
    date accessioned2017-06-09T16:33:25Z
    date available2017-06-09T16:33:25Z
    date copyright2010/11/01
    date issued2010
    identifier otherams-69939.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4211663
    description abstractThe authors simulated the effects of Amazonian mesoscale deforestation in the boundary layer and in rainfall with the Brazilian Regional Atmospheric Modeling System (BRAMS) model. They found that both the area and shape (with respect to wind incidence) of deforestation and the soil moisture status contributed to the state of the atmosphere during the time scale of several weeks, with distinguishable patterns of temperature, humidity, and rainfall. Deforestation resulted in the development of a three-dimensional thermal cell, the so-called deforestation breeze, slightly shifted downwind to large-scale circulation. The boundary layer was warmer and drier above 1000-m height and was slightly wetter up to 2000-m height. Soil wetness affected the circulation energetics proportionally to the soil dryness (for soil wetness below ?0.6). The shape of the deforestation controlled the impact on rainfall. The horizontal strips lined up with the prevailing wind showed a dominant increase in rainfall, significant up to about 60 000 km2. On the other hand, in the patches aligned in the opposite direction (north?south), there was both increase and decrease in precipitation in two distinct regions, as a result of clearly separated upward and downward branches, which caused the precipitation to increase for patches up to 15 000 km2. The authors? estimates for the size of deforestation impacting the rainfall contributed to fill up the low spatial resolution in other previous studies.
    publisherAmerican Meteorological Society
    titleCan the Deforestation Breeze Change the Rainfall in Amazonia? A Case Study for the BR-163 Highway Region
    typeJournal Paper
    journal volume14
    journal issue18
    journal titleEarth Interactions
    identifier doi10.1175/2010EI351.1
    journal fristpage1
    journal lastpage25
    treeEarth Interactions:;2010:;volume( 014 ):;issue: 018
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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