共查询到20条相似文献，搜索用时 187 毫秒
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《南京气象学院学报》2011,34(1):128-128
一、《大气科学学报》由原《南京气象学院学报》（1978年创刊）全新改版而来,由南京信息工程大学主办。本刊遵循国家有关新闻出版法规,贯彻＂双百＂方针,以繁荣我国气象科学事业,促进国内外学术交流为宗旨。本刊主要刊登大气科学及相关学科的理论和应用研究论文,国内外研究进展综述等。本刊为双月刊,欢迎国内外从事大气科学及相关学科研究的科研人 相似文献
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《南京气象学院学报》2011,34(5):640-640
一、《大气科学学报》由原《南京气象学院学报》（1978年创刊）全新改版而来,由南京信息工程大学主办。本刊遵循国家有关新闻出版法规,贯彻＂双百＂方针,以繁荣我国气象科学事业,促进国内外学术交流为宗旨。本刊主要刊登大气科学及相关学科的理论和应用研究论文,国内外研究进展综述等。本刊为双月刊,欢迎国内外从事大气科学及相关学科研究的科研人员及高等学校有关专业的师生投稿。 相似文献
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本文在论述大气科学发展趋势的基础上,提出了关于我国大气科学发展的总体战略,以及为实现此总体战略所应采取的战略措施。 大气科学是研究大气状态及其变化规律以及如何利用这些规律为人类服务的科学,它与人类社会的生产和生活密切相关。本世纪70年代以来,许多地区出现了大范围的气候异常现象,同时也由于人 相似文献
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当今,现代化的技术装备为大气科学迅速发展提供了良好的物质条件,能否实现大气科学的大发展,理论研究已经上升到很重要的位置了。就大气环流、气候形成、各种时效的天气预报理论来说,基本上属于动力学的范畴,近代的研究课题正处在气象学、流体动力学和数学这三者的汇合点上。因此,必须把这 相似文献
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《气象科学进展》2014,(6)
从科学史与学科分类的视角,按照历史阶段和融合方式这两个维度,分析归纳了六组学科领域与大气科学发展的融合与互动:古代气象学在萌芽阶段曾与天文学和地理学共生;16—18世纪在因探险活动而兴起的航海学和山地学研究中,积累了丰富的气象学研究素材;19—20世纪气象学逐渐吸收了数理科学的成果,并初步建立了基础理论;20世纪在计算机技术和遥感技术的推动下,大气科学在数值预报和气象观测等方面实现了质的飞跃;20世纪以来,农业气象、医疗气象等各应用气象领域蓬勃发展,大气科学得到了更加专业和深入的应用;21世纪后,大气科学与政治学、经济学、传播学等社会科学广泛融合,开启了大气科学崭新的发展阶段。 相似文献
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大气科学以实际观测资料为自己发展的基本依据，以不同尺度的时间和空间为自己的活动舞台，又以其它多种学科作为自己发展的理论基础和研究手段，这既表明了综合性是大气科学发展的固有属性，也决定了综合性是大气科学发展的必然趋势。纵观大气科学发展过程，特别是70年代以来的世界范围内的综合性大气观测试验活动和数值模拟工作，表明了加强国际间合作，开展多学科的综合研究，应是推动大气科学发展的必然途径。本文就上述的固有属性、学科联系和国际合作三个方面作了初步分析。 相似文献
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R. B. Zaripov Yu. V. Martynova V. N. Krupchatnikov A. P. Petrov 《Russian Meteorology and Hydrology》2016,41(11-12):808-815
The system of the cyclic assimilation of data on atmospheric conditions used in the West Siberian Administration for Hydrometeorology and Environmental Monitoring is described. It is based on the WRF-ARW mesoscale atmospheric model and on the WRF 3D-Var system of the three-dimensional variational analysis of data. The system is verified when the first approximation data (6-hour forecast) and WRF-ARW forecasts with the lead time up to 24 hours are compared with the observational data. The problems of assimilation of observations from the AMSU-A and AIRS satellite instruments are considered. The effect of using AMSU-A and AIRS for the analysis in the Novosibirsk region is estimated. The experiments demonstrated that the cyclic data assimilation system operates successfully. The AMSU-A observations improve the quality of analyses and forecasts in winter. In summer the impact of satellite observations on the forecast skill scores is ambiguous. Good short-term forecasts are provided by the initial conditions obtained using the system of detailing of the NCEP large-scale analysis. 相似文献
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为了充分发挥雷电资料的作用,解决资料的质量问题,建立雷电综合数据库及其资料分析处理加工平台。基于JavaScript的WebGIS框架和CIMISS数据库,设计开发了具有数据处理和质量控制、分析和应用功能的雷电资料分析处理系统,建立了以闪电、大气电场、雷暴日和雷击灾害数据为主要内容的雷电信息数据库。该系统能够实时监测卫星、雷达、闪电、大气电场等多种探测信息,开展雷电数据的质量控制,回演、动态播放历史信息,具有信息查询统计、分析绘制曲线、制作雷电报告等多项功能,为防雷业务、科研和服务工作提供方便、高效的应用工具和技术平台。以2015年6月1—2日湖北监利县的一次强雷电天气过程为例,通过对这次雷电过程的应用实践表明:雷电资料分析处理系统闪电监测准确,图表绘制快速,统计分析结果适用,能够满足防雷业务及科研工作的需要,为高效开展雷电灾害防御和服务提供了高效的基础性平台。 相似文献
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A conceptual coupled ocean-atmosphere model was used to study coupled ensemble data assimilation schemes with a focus on the role of ocean-atmosphere interaction in the assimilation. The optimal scheme was the fully coupled data assimilation scheme that employs the coupled covariance matrix and assimilates observations in both the atmosphere and ocean. The assimilation of synoptic atmospheric variability that captures the temporal fluctuation of the weather noise was found to be critical for the estimation of not only the atmospheric, but also oceanic states. The synoptic atmosphere observation was especially important in the mid-latitude system, where oceanic variability is driven by weather noise. The assimilation of synoptic atmospheric variability in the coupled model improved the atmospheric variability in the analysis and the subsequent forecasts, reducing error in the surface forcing and, in turn, in the ocean state. Atmospheric observation was able to further improve the oceanic state estimation directly through the coupled covariance between the atmosphere and ocean states. Relative to the mid-latitude system, the tropical system was influenced more by ocean-atmosphere interaction and, thus, the assimilation of oceanic observation becomes more important for the estimation of the ocean and atmosphere. 相似文献
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This paper tests the idea of substituting the atmospheric observations with atmospheric reanalysis when setting up a coupled data assimilation system.The paper focuses on the quantification of the effects on the oceanic analysis resulted from this substitution and designs four different assimilation schemes for such a substitution.A coupled Lorenz96 system is constructed and an ensemble Kalman filter is adopted.The atmospheric reanalysis and oceanic observations are assimilated into the system and the analysis quality is compared to a benchmark experiment where both atmospheric and oceanic observations are assimilated.Four schemes are designed for assimilating the reanalysis and they differ in the generation of the perturbed observation ensemble and the representation of the error covariance matrix.The results show that when the reanalysis is assimilated directly as independent observations,the root-mean-square error increase of oceanic analysis relative to the benchmark is less than 16%in the perfect model framework;in the biased model case,the increase is less than 22%.This result is robust with sufficient ensemble size and reasonable atmospheric observation quality(e.g.,frequency,noisiness,and density).If the observation is overly noisy,infrequent,sparse,or the ensemble size is insufficiently small,the analysis deterioration caused by the substitution is less severe since the analysis quality of the benchmark also deteriorates significantly due to worse observations and undersampling.The results from different assimilation schemes highlight the importance of two factors:accurate representation of the error covariance of the reanalysis and the temporal coherence along each ensemble member,which are crucial for the analysis quality of the substitution experiment. 相似文献
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Review and Development on the Studies of Chinese Meteorological Satellite and Satellite Meteorology 
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下载免费PDF全文 Meteorological satellite and satellite meteorology are the fastest developing new branches in the atmospheric sciences. Today the meteorological satellite has become a key element in the global atmospheric sounding system while the satellite meteorology is covering the main components of earth's system science. This article describes the major achievements that China has made in these fields in the past 30 years. The following contents are involved: (1) History and present status of China's meteorological satellites. It covers the development, launch, operation, technical parameters of China's polar and geostationary meteorological satellites. (2) Major achievements on remote sensing principle and method. It describes the retrieval of atmospheric temperature and humidity profiles, cloud character retrieval, aerosol character retrieval, precipitation retrieval as well as the generation of cloud wind. (3) Achievement on the studies of meteorological satellite data application. This part covers the applications of meteorological satellite data to weather analysis and forecast, numerical forecast, climate monitoring, and prediction of short-term climate change. Besides, the new results on data assimilation, climate monitoring, and forecast are also included. 相似文献
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为检验臭氧卫星资料同化对臭氧分析场和预报场的影响,基于集合平方根滤波(ENSRF)理论,结合通用地球系统模式(CESM),构建了CESM-ENSRF同化预报系统。系统构建过程考虑了卡尔曼滤波同化中的关键问题:利用全场随机扰动对初始场加扰,结合一般协方差膨胀和松弛协方差膨胀方法实现协方差膨胀,使用五阶距离相关函数进行协方差局地化。将构建的系统用于微波临边探测器(MLS)臭氧廓线数据的同化,分析臭氧卫星资料同化对模式预报的影响。结果表明:构建的CESM-ENSRF同化系统有效实现了臭氧资料同化,臭氧卫星资料同化对臭氧分析场和预报场精度有较大改进。 相似文献
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