Advection na danshi

Advection na danshi

Advection na danshi shine jigilar tururi ta iska. Aunawa da ilimin tururin ruwa na yanayi, ko "ruwa", yana da mahimmanci a cikin tsinkaya na duk abubuwan yanayi, musamman girgije, hazo, zafin jiki, zafi, ƙididdigar ta'aziyya da hazo. Yankunan advection na danshi galibi suna tare da yankuna na advection mai dumi.

Ma'anar

Yin amfani da ma'anar gargajiya na advection, an bayyana advection na danshi kamar haka:

$Adv(\rho _{m})=-\mathbf {V} \cdot \nabla \rho _{m}\!$

inda V shine iska mai laushi, kuma

ρ

m

{\displaystyle \rho _{m}}

shine yawan tururi na ruwa. Koyaya, yawanci ana auna abun cikin tururi na ruwa dangane da haɗuwa (ƙananan taro) a cikin satar-linkid="22" href="./Meteorological_reanalysis" id="mwGQ" rel="mw:WikiLink" title="Meteorological reanalysis">sake nazarin ko raɓa (zafin jiki zuwa matsin matsin tururi, watau zafi na dangi zuwa 100%) a cikin hasashen aiki. Za'a iya tunanin advection na raɓa kanta a matsayin advection mai danshi:

$Adv(T_{d})=-\mathbf {V} \cdot \nabla T_{d}\!$

Ruwa mai guba

Dangane da haɗuwa, ana iya wakiltar jigilar kaya / advection a kwance dangane da kwararar danshi:

$\mathbf {f} =q\mathbf {V} \!$

inda q shine rabo na gauraya. Ana iya haɗa darajar a duk faɗin yanayi don jimlar jigilar danshi ta hanyar tsaye:

$\mathbf {F} =\int _{0}^{\infty }\!\rho \mathbf {f} \,dz\,=-\int _{P}^{0}\!{\frac {\mathbf {f} }{g}}\,dp\,$

inda

ρ

{\displaystyle \rho }

shine yawan iska, kuma P shine matsin lamba a ƙasa. Don ma'anar dama mai nisa, mun yi amfani da kusanci na daidaitattun Hydrostatic.

Kuma bambancinsa (haɗuwa) yana nuna evapotranspiration (ruwa) kamar ƙarawa (cirewa) danshi daga shafi:

$P-E-{\frac {\partial (\int _{0}^{\infty }\!\rho q\,dz\,)}{\partial t}}=-\nabla \cdot \mathbf {F} \!$

inda P, E, da cikakkiyar kalma sune - hazo, evapotranspiration, da kuma lokacin canjin ruwan sama, duk an wakilta su dangane da taro / (yanki * lokaci na raka'a). Mutum na iya canzawa zuwa wasu raka'a na yau da kullun a tsawon kamar mm ta hanyar ninka yawan ruwa mai ruwa da kuma ma'aunin juyawa na tsawon lokaci.

Dubi kuma

• Haar (fog)
• Tsarin ruwa
• Advection mai kyau

Haɗin na vwaje

• Bayani na Ruwa Advection
• Amfani da Advection na Ruwa don Tsinkaya Yanayi