advection region 中文意思是什麼
advection region
解釋
平流區-
Using a dissolved conservative material as a tracer in the water, a three - dimension advection - diffusion water exchange numerical model was used to study the flushing time by discharge and the discharge dominated region of the yangtze estuary. the flushing time of the yangtze estuary is an important eigenvalue, which denotes the water environmental capability of estuary
然後應用以溶解態的保守性物質做為研究長江口水體交換的載體，建立了完全三維對流擴散型的長江口水體交換的數值模型，對長江口的水體交換時間做了一個整體的計算。 -
Using a dissolved conservative material as a tracer in the water, a three - dimension advection - diffusion water exchange numerical model was used to study the flushing time by discharge and the discharge dominated region of the yangtze estuary based on the successful simulation of flow field
在成功模擬長江口流場的基礎上，同時應用以溶解態的保守性物質做為長江口水體交換的載體，建立了三維對流擴散型的長江口水體交換的數值模型，對整個長江口的水體交換規律進行了研究。 -
The results show that a warm high ridge at the middle level and transformed surface cold high over the plain provide a good background condition ; a cooling process produced by net surface radiation fluxes is the trigger and strengthening mechanism for the fog event ; the subsidence flow at the middle and low tropospheric levels is favorable for the setting - up and maintenance of stable stratification at the boundary layer and weak wind condition at the ground layer over the fog region ; the transportation of weak warm advection at lower levels and weak lift motion at the boundary layer play a very important role to the long maintenance of the fog event ; the intrusion of north wind accompanied by cold advection is a main dynamic factor of the fog dissipation
結果表明：在中高層暖性高壓脊及地面變性冷高壓穩定維持的大尺度背景條件下，地表凈輻射引起的近地層冷卻是大霧過程的觸發和加強機制；中低空下沉氣流的存在有助於近地層的弱風條件和穩定層結的建立；低層暖平流的輸入和邊界層的淺層抬升是大霧長時間持續的原因；伴隨冷空氣南下的偏北大風是驅使大霧消散的動力因子。
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