本文選題：增城 + 丘陵灌木林　； 參考：《熱帶氣象學(xué)報(bào)》2017年05期

【摘要】：介紹了廣州增城丘陵灌木林通量站的地理環(huán)境、儀器布設(shè),并利用該站2014年12月—2015年2月的觀測(cè)資料,分析冬季華南丘陵灌木林下墊面近地層的風(fēng)、溫度、氣壓、濕度和大氣穩(wěn)定度等基本氣象要素特征,以及湍流強(qiáng)度、風(fēng)速歸一化標(biāo)準(zhǔn)差的統(tǒng)計(jì)特征及通量特征。結(jié)果表明:(1)冬季增城站以北向小風(fēng)為主,風(fēng)速多小于4 m/s,日平均溫度變化劇烈,平均相對(duì)濕度為67.94%;(2)大氣穩(wěn)定度集中于"±"0.5之間,以近中性為主;冬季平均湍流強(qiáng)度I_u、I_v和I_w分別為0.37、0.31和0.19;在風(fēng)速小于1 m/s時(shí)湍流發(fā)展旺盛,隨風(fēng)速增大,湍流強(qiáng)度減小并趨于穩(wěn)定;(3)風(fēng)速分量歸一化標(biāo)準(zhǔn)差δu/u*、δv/u*、δw/u*與穩(wěn)定度Z/L之間滿足莫寧-奧布霍夫相似理論,并呈1/3次方關(guān)系,且隨|Z/L|的減小而減小,在中性層結(jié)(Z/L→0)均勻下墊面,其值為常數(shù),分別為2.286、1.757和1.174;(4)冬季增城站的能量耗散以感熱為主,晴天尤為顯著;陰天感熱與潛熱大小相當(dāng);平均日間吸收CO_2極值為0.236 mg/(m~2·s)。
[Abstract]:This paper introduces the geographical environment and instrument layout of the shrub flux station in Zengcheng hilly area, Guangzhou, and analyzes the wind, temperature and pressure on the underlying surface of shrubbery in south China in winter by using the observation data of this station from December 2014 to February 2015. The characteristics of basic meteorological elements such as humidity and atmospheric stability, as well as the statistical characteristics and flux characteristics of the normalized standard deviation of turbulence intensity and wind speed. The results show that the small wind in north of Zengcheng station is dominant in winter, the wind speed is less than 4 m / s, the daily average temperature changes sharply, the average relative humidity is 67.94 / 2) the atmospheric stability is concentrated in the range of "鹵" 0.5, and is mainly near neutral. The average turbulence intensity in winter is 0.37 / 0.31 and 0.19 respectively. When the wind speed is less than 1 m / s, the turbulence develops strongly and increases with the wind speed. Turbulence intensity decreases and tends to stabilize.) the normalized standard deviation of wind speed components 未 u / u, 未 v / u, 未 w / u * and stability Z / L satisfy the Moning-O 'Obrahoff similarity theory, and show a 1 / 3 power relation, and decrease with the decrease of Z / L, and the uniform underlying surface is formed in the neutral layer (Z / L / L 0). The energy dissipation of Zengcheng Station in winter is mainly sensible heat, especially in sunny days, the overcast heat is equal to latent heat, and the average daytime absorption CO_2 extremum is 0.236 mg/(m~2 路s ~ (-1).
【作者單位】： 中國(guó)海洋大學(xué)海洋與大氣學(xué)院;中國(guó)氣象局廣州熱帶海洋氣象研究所海洋氣象聯(lián)合開(kāi)放實(shí)驗(yàn)室;中國(guó)科學(xué)院南海海洋研究所熱帶海洋環(huán)境國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(2014CB953903) 國(guó)家自然科學(xué)基金(41275025)共同資助
【分類號(hào)】：S716.2
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本文編號(hào)：1910331