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气象:2016,42(9):1058-1068
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东亚区域陆面过程方案Noah和Noah-MP的比较评估
(1.中国气象科学研究院灾害天气国家重点实验室,北京 100081;2.中国气象科学研究院灾害天气国家重点实验室,北京 100082;3.中国气象科学研究院灾害天气国家重点实验室,北京 100083;4.中国气象科学研究院,北京 100081;5.中国气象科学研究院灾害天气国家重点实验室,北京 100081)
The WRF Performance Comparison Based on Noah and Noah MP Land Surface Processes on East Asia
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投稿时间:2015-09-20    修订日期:2015-12-26
中文摘要: 文章对天气研究和预报(WRF)模式中两套陆面物理过程参数化方案:Noah及Noah MP,在整个东亚区域做了评估。评估时间分别为2013年1和7月。通过对地表通量、2 m温度、10 m风速、地表温度、第一层(5 cm)及第二层(25 cm)土壤含水量和第一层(5 cm)及第三层(70 cm) 土壤温度的偏差和均方根误差的评估,发现:(1)与Noah陆面参数化方案相比,冬季,Noah MP方案模拟的地表感热通量在大部分区域偏低,而对地表潜热通量的模拟在大部分区域偏高;夏季,Noah MP方案对感热通量的模拟值,在印度次大陆、中国西部和相邻区域以及中国东北及其以北地区偏低,其他地区偏高,而对地表潜热通量的模拟在大部分地区偏高,而且幅度明显高于1月。(2) Noah MP方案提高了土壤水分和土壤温度在东亚区域的整体模拟效果。(3)相较于Noah方案,Noah MP方案模拟的2 m温度和10 m风的误差较小,特别对印度大陆和高寒地区的2 m温度模拟有较大幅度的提高。此研究证明了Noah MP在东亚区域的应用优势,为WRF/Noah MP在未来的进一步业务应用提供了一定的参考依据。
Abstract:In this study, two land surface schemes (LSSs), Noah LSS and Noah MP LSS, are evaluated over the East Asian Region for January and July in 2013. Through the evaluation of 2 m air temperature, 10 m wind speed, surface temperature, soil temperature at depths of 5 cm and 70 cm, and soil moisture at depths of 5 cm and 25 cm, the results showed that: (1) Compared to Noah LSS, Noah MP LSS produces less surface sensible heat flux but more latent heat flux in January in most areas. Noah MP LSS produces more sensible heat flux except for Indian continent, western China and its adjacent regions, northeastern China in July, also more latent heat flux in most areas. The magnitude of increase in latent heat flux in July is larger than in January. (2) Compared to Noah LSS, Noah MP LSS improves the overall simulation of soil moisture and soil temperature over the East Asian Region. (3) Compared to Noah LSS, the bias and root mean squared error of simulated 2 m air temperature and 10 m wind speed with Noah MP LSS decrease, especially the simulation for the 2 m air temperature over Indian continent and cold climate regions is improved significantly. This study indicates the advantage of coupled Noah MP over the East Asian Region, and provides the basis for WRF/Noah MP in future operational application.
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基金项目:国家自然科学基金项目(41505010)和中国气象科学研究院基本科研业务费项目(2015Z003和2015Z002)共同资助
引用文本:
张果,薛海乐,徐晶,陈军明,何会中,2016.东亚区域陆面过程方案Noah和Noah-MP的比较评估[J].气象,42(9):1058-1068.
ZHANG Guo,XUE Haile,XU Jing,CHEN Junming,HE Huizhong,2016.The WRF Performance Comparison Based on Noah and Noah MP Land Surface Processes on East Asia[J].Meteor Mon,42(9):1058-1068.