热带气象学报2017，Vol.33Issue(5)：706-715,10.DOI:10.16032/j.issn.1004-4965.2017.05.014
冬季增城丘陵灌木林基本气象要素与湍流特征
OBSERVATIONAL ANALYSIS ON WINTER TURBULENCE FEATURE OVER SHRUB ECOSYSTEM IN ZENGCHENG HILLY REGION
摘要
Abstract
A brief introduction of a Zengcheng land-surface processes observation tower is given,including the equipment and geographical environment.Based on the turbulence data collected from December 2014 to February 2015 the basic micrometeorological characteristics such as wind direction,atmospheric stability,turbulence intensity etc.in the near-surface layer were investigated.The results show that:(1) The observation tower is under small northerly wind condition in winter with high amplitude of temperature variation;(2) The distribution of atmospheric stability is concentrated in ± 0.5 and mainly near 0;Turbulence is active when the wind velocity is lower than 1 m/s,the intensity of turbulence will decrease with the increase of wind speed until it becomes a constant;(3) The normalized standard deviation of wind velocity components generally meet the 1/3 power low with Z/L and has the synchronous changes with |Z/L|,when |Z/L |→0,δu/u*、δv/u*、δw/u* tend to be constant;(4) Sensible heat flux is the leading energy consumption of in winter,especially in sunny days;the maximum average diurnal absorption of CO2 is 0.236 mg/(m2· s).关键词
增城/丘陵灌木林/湍流特征/日变化/冬季Key words
Zengcheng/shrub ecosystem/turbulent characters/diurnal variation/winter分类
农业科技引用本文复制引用
刘海坤,黄健,王鑫,张苏平..冬季增城丘陵灌木林基本气象要素与湍流特征[J].热带气象学报,2017,33(5):706-715,10.基金项目
国家重点基础研究发展计划(2014CB953903) （2014CB953903）
国家自然科学基金(41275025)共同资助 （41275025）
