| 北京郊区草地夏季能量收支平衡的数值模拟 |
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| 引用本文： | 张小华,高志球,宋玉芝,王琳琳,陈梁,顾荆奕,陈洪良.北京郊区草地夏季能量收支平衡的数值模拟[J].大气科学学报,2015,38(6):827-835. |
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| 作者姓名： | 张小华 高志球 宋玉芝 王琳琳 陈梁 顾荆奕 陈洪良 |
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| 作者单位： | 南京信息工程大学应用气象学院, 江苏南京 210044;南京信息工程大学应用气象学院, 江苏南京 210044;南京信息工程大学应用气象学院, 江苏南京 210044;中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室, 北京 100029;苏州市吴中区东山气象站, 江苏苏州 215107;苏州市吴中区东山气象站, 江苏苏州 215107;苏州市吴中区东山气象站, 江苏苏州 215107 |
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| 基金项目： | 中国科学院先导专项(XDA05110101);国家重点基础研究发展计划(973计划)项目(2012CB417203) |
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| 摘 要： | 北京郊区地表能量分配可能影响北京地区的天气和气候。为了进一步检验陆面过程模式对北京郊区具有代表性的稀疏草地地表能量分配的模拟能力,利用原版和改进版简化生物圈模式(SiB2,Simple Biosphere Model 2)模拟了2010年7月22日-8月5日期间北京郊区阳坊镇坦克打靶场草地的辐射平衡、能量收支以及地表热通量。并将模拟结果与实际测量的数据进行对比,结果表明:1)原版SiB2低估净辐射11.32%,改进版SiB2则低估净辐射5.81%,主要原因是改进版SiB2更新了土壤热传导率计算方法,从而提高了土壤温度(包括地表温度)模拟结果的精度,进而改善了地表向上的长波辐射模拟结果的准确性;2)改进版SiB2同时改善了感热通量和潜热通量的模拟结果,但是原版SiB2和改进版SiB2均低估了土壤热通量。
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| 关 键 词： | SiB2 能量平衡 净辐射 |
| 收稿时间： | 2012/12/6 0:00:00 |
| 修稿时间： | 2013/4/12 0:00:00 |
Numerical simulation of surface energy budget balance over grassland in Beijing suburban area in summer |
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| ZHANG Xiao-hu,GAO Zhi-qiu,SONG Yu-zhi,WANG Lin-lin,CHEN Liang,GU Jing-yi and CHEN Hong-liang.Numerical simulation of surface energy budget balance over grassland in Beijing suburban area in summer[J].大气科学学报,2015,38(6):827-835. |
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| Authors: | ZHANG Xiao-hu GAO Zhi-qiu SONG Yu-zhi WANG Lin-lin CHEN Liang GU Jing-yi and CHEN Hong-liang |
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| Institution: | School of Applied Meteorology, NUIST, Nanjing 210044, China;School of Applied Meteorology, NUIST, Nanjing 210044, China;School of Applied Meteorology, NUIST, Nanjing 210044, China;State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;Dongshan Meteorological Station of Wuzhong District of Suzhou City, Suzhou 215107, China;Dongshan Meteorological Station of Wuzhong District of Suzhou City, Suzhou 215107, China;Dongshan Meteorological Station of Wuzhong District of Suzhou City, Suzhou 215107, China |
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| Abstract: | Weather and climate in Beijing area may be affected by surface energy partitioning in Beijing suburbs.To evaluate the performance of land surface models in energy partitioning simulation over sparse grasslands in Beijing suburbs,the original and modified versions of Simple Biosphere Model 2(SiB2) are applied to simulate the surface radiation balance,turbulent energy budget,and soil temperature and moisture over a tank exercise field in Beijing suburban area from 22 July to 5 August 2010.Simulated results are compared against the direct measurements.Results show that:1)The modified SiB2 underestimates net radiation by 5.81% when the original SiB2 underestimates net radiation by 11.32%.The modified SiB2 where the soil thermal conductivity is updated can better simulate the soil temperature(including the soil surface temperature) and the upward-wave radiation;2)The modified SiB2 can better simulate the sensible heat and latent heat fluxes,but both the original and modified SiB2 underestimate the soil heat flux. |
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| Keywords: | SiB2 energy balance net radiation |
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