soil-heat flux 中文意思是什麼

soil-heat flux 解釋
土壤熱通量
  • soil : n 1 泥土，土壤；土質。2 土地，國土。3 滋生地，溫床。4 農業生活，務農。n 1 臟東西，污物，污穢，污...
  • heat : n 1 熱；熱力；熱度；熱量。2 體溫；發燒。3 （氣候的）高溫，暑氣。4 【冶金】熔煉的爐次；裝爐量；一...
  • flux : n 1 流，流出；流動。2 漲潮。3 不斷的變動，波動。4 【物理學】流量，通量，電通量，磁通量。5 熔解，...
  1. A transfer model is established, which can be used to study the interaction between the land surface physical processes of inhomogeneous region and the structure of atmosphere boundary - layer over urban and rural terrains. the model has simulated surface heat flux, surface temperature, temperature profiles, height of mixture layer and so on. and the differences between urban area, suburban area and rural area have been compared. this model mainly depends on the parameters below : surface albedo, surface roughness coefficient, moisture available coefficient of soil, thermal capacity and thermal diffusion coefficient of errain, cloudage. the result shows that this model can simulate the structure and eigenvalues of atmosphere boundary layer and their changes in a day. parameters used in this model aim at beijing city, and the time is at the beginning of september. to other cities, or other time, the parameters should be adjusted accordingly. in addition, being adjusted, the model can also be used for other homogeneous and inhomogeneous terrains

    模式主要依賴于以下參數和物理量：地面反照率下墊面粗糙度土壤的可含水量下墊面的熱容量和熱擴散系數雲量等參數。結果表明，本模式能合理地模擬不同地表熱量平衡地表氣溫混合層高度湍流交換系數湍流動能位溫廓線等，以及它們的日變化。該模式所取參數主要針對北京市，時間為九月初，對于其他城市，參數應作相應的調整。
  2. ( 2 ) based on gaining the surface parameters, to compare to diversified retrieve model to choose optimal one to retrieve net radiance flux, soil heat flux and latent heat flux, which settle the groundwork to calculate the regional et

    在獲取地表參數的基礎上，反復對比前人各種遙感反演模型，選擇最佳模型對長江三角洲的區域凈輻射通量、土壤熱通量、潛熱通量進行了反演，為計算區域蒸散量奠定了基礎。
  3. The maximum of instantaneous global radiation is beyond 1000w / m2 and the ten - days average intensity is 338. 90w / m2 because of high atmospheric transparency over semi - arid rainfed agriculture region of loess plateau between june and august. global radiation, reflected global radiation and surface long wave radiation emerge the characteristic of daily variations on a typical clear day and cloudy day, whereas atmospheric long wave radiation has not this characteristic. meanwhile, net radiation, latent heat flux sensible heat flux and soil heat flux appear the same characteristic as the mean daily variations above spring wheat field and bare soil on a typical clear day and cloudy day

    黃土高原半乾旱雨養農業區夏秋季大氣透明度較高，晴天地面的總輻射值最大瞬時值均超過1000w m ~ 2 ， 6 8月總輻射旬平均強度為338 . 90w m ~ 2 ；典型晴天和陰天總輻射、反射輻射、地表長波輻射均表現出明顯的日變化特徵，而雨天沒有明顯的日循環規律；無論是晴天、陰天還是雨天，大氣長波輻射基本沒有明顯的日變化規律。
  4. Similarly, the net radiation on a cloudy day is mainly used up evaporation of soil. the integrated value of soil heat flux is negative on a cloudy day and that shows the soil emits the heat, which is different on a clear day. in short, average latent, sensible and soil heat flux is 67 %, 21 % and 6 % of net radiation respectively

    在裸地下墊面時，晴天潛熱佔到凈輻射的60 ，顯熱交換只佔到19 ，在陰天凈輻射同樣主要消耗于土壤蒸發，與晴天不同的是在陰天土壤熱通量積分值小於零，表明土壤在向外釋放熱量；平均狀況下，潛熱、顯熱和土壤熱通分別佔到凈輻射的67 、 21和6 。
  5. In short, through retrieving the parameter such as surface albedo, surface temperature and surface emissivity, all the energy flux such as net radiance flux, soil heat flux and latent heat flux can be computed in sequence further, then latent heat flux which provide energy for et can be computed based on energy balance equation, finally instantaneous et and daily et can be obtained

    總之，根據地表能量平衡方程，通過計算對地表反照率、地表溫度、地表比輻射系數、歸一化植被指數等參數進行反演，進一步計算出了地表凈輻射通量，土壤熱通量和潛熱通量，最後獲得了遙感影像成像時的瞬時蒸散及當天的總蒸散量。
  6. Soil heat flux from atmosphere to soil is about 5 % of net radiation on a clear and cloudy day and soil discharge energy to atmosphere on a rainy day above the same field. in brief, average latent heat, sensible heat and soil heat flux is 40 %. 50 % and 10 % of net radiation respectively

    在春小麥下墊面，晴天能量主要消耗于農田蒸散，而在陰天顯熱交換大於農田蒸散耗熱；在晴天和陰天大氣向土壤的能量傳輸均維持在凈輻射的5左右，雨天時，土壤熱通量為負值。
  7. Some variables regional distribution over south ningxia is given out in the course of evapotranspiration estimation : the regional distribution of surface characteristic parameters ( normalzed difference vegetation index, surface albedo, surface temperature ), radiation balance components ( surface absorbed shortwave radiation, surface longwave radiation, atmospheric counter radiation, net radiation ), surface heat and balance components ( soil heat flux, sensible heat flux, latent heat flux )

    估算區域蒸發（散）量的過程中，得到許多有意義的量：地表特徵參數（植被指數ndvi 、地表反射率、地表溫度） ；地表輻射平衡各量（地表短波吸收輻射、地表長波輻射、大氣逆輻射、地表凈輻射） ；地表熱量平衡各量（土壤熱通量、顯熱通量、潛熱通量） 。
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