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１９９６年，冬春全国大部降水偏少，北方干旱范围较大，夏季全国大部降水偏多，洪涝面积大，灾情重；秋季，全国大部降水偏少，但淮河流域异常多雨，局地秋涝较重。年平均气温，北方偏高，南方偏低；年日照对数，全国大部偏少，部分地区遭受雪灾，冻害或低温寡照危害，登陆台风个数与常年相同，但造成损失重，部分地区遭受风雹，龙卷风危害。 相似文献
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本文从当地实际出发，充分利用气候资源，提高高纬度地区蔬菜复种指数，方法取材简单，用料成本低，增温效果明显，延长作物生育期，管理方便，适于间，混，套种，取得了显著的经济效益，有利于推广。 相似文献
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针对四川暴雨频发，灾重的特点和防汛气象服务准确及时，全程系列的要求，设计四川省暴雨预报警报服务系统，要在暴雨探测，通信、预报，综合信息，灾害评估和防灾对策研究的基础上，建立省级信息发布中心和决策服务政府专线，充分发挥中期预警，短期消息、临近警报，应急体制“四度设防”的功能效应急体制加强主体作用，完善联防机制，健全组织结构，提高运行效果，取得最佳效益。 相似文献
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吉林省位于我国东北中部，处于北半球的中纬地带，天气多变，季节明显，是“气候脆弱性”区，灾害频繁，仅就近４０年来有记录不完全统计，能搜集到有文字记载突发性暴雨就有２４次，损失约计２２亿元以上，死亡及失踪人数高达２４６５人之多，平均每年近６２人。因此，搞好这项研究工作，在当前来说对防灾减灾，抗灾活动，具有现实意义。 相似文献
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７１３Ｃ型雷达天控系统，控保环节多，布线分散，运行功率大，故障率相对较高，因现有图纸比较复杂，查阅时有诸多困难，现结合实际工作情况，加工整理了该系统原理检修图，并进行了电路分析，既便于理解系统原理，又便于故障诊断，在装备技术保障工作中具有较好的实用价值。 相似文献
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基于数字高程模型的环青海湖地区可能太阳直接辐射的计算 总被引：5，自引：3，他引：5
建立了环青海湖地区的数字高程模型（Digital Elevation Model,简称DEM），在此基础上，应用山地气候学理论研究了坡度，坡向，高度，地理位置等对该地区一年内不同季节可能太阳直接辐射（Q）空间分布的影响，结果表明，该地区平均Q值，春季为323KJ.cm^-2，夏季为378．7kJ.cm^-2，秋季为225KJ.cm^-2，冬季为166KJ.cm^2，在研究区域较小时，太阳辐射随高度、纬度的变化不明显，其影响可以忽略不计，而坡度和坡向对Q空间分布的影响是非常明显的，其影响的大小随着一年内时间的不同而不同，对于环青海湖地区而言，冬季影响最大，其次分别为秋季，夏季和春季，区内最大值与最小值的差异冬季达170U.cm^-2，而夏季仅为19KJ.cm^-2，环青海湖地区Q分布特征是，湖南山地小于平均值，湖北山地大于平均值，而湖边平址草地等于平均值。 相似文献
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用国家气象中心1995－1997年6－9月份的T106数值预报产品，运用统计，分析的办法，对晋中市11个县市的温度，降水，风向风速的24，36，48，72h的预报进行了试验研究，并建立了《晋中市分县气象要素短期预报系统》，本文统直接挂接在MICAPS系统下，自动处理数值预报产品资料，制作晋中市11个县市的温度，降水，风向风速的24－72h滚动预报，预报结果以晋中市区域图为底图显示，该系统运行稳定，速度快，对各气象要素均有较高的预报水平。 相似文献
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Fei LIU Chen XING Jinbao LI Bin WANG Jing CHAI Chaochao GAO Gang HUANG Jian LIU Deliang CHEN 《大气科学进展》2020,37(7):663-670
正The Taal Volcano in Luzon is one of the most active and dangerous volcanoes of the Philippines. A recent eruption occurred on 12 January 2020(Fig. 1a), and this volcano is still active with the occurrence of volcanic earthquakes. The eruption has become a deep concern worldwide, not only for its damage on local society, but also for potential hazardous consequences on the Earth's climate and environment. 相似文献
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Analysis of Atmospheric Boundary Layer Height Characteristics over the Arctic Ocean Using the Aircraft and GPS Soundings 
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下载免费PDF全文 正ERRATUM to: Atmospheric and Oceanic Science Letters, 4(2011), 124-130 On page 126 of the printed edition (Issue 2, Volume 4), Fig. 2 was a wrong figure because the contact author made mistake giving the wrong one. The corrected edition has been updated on our website. The editorial office is sincerely sorry for any 相似文献
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《大气科学进展》2014,(6)
正AN Junling;see LI Ying et al.;(5),1221—1232AN Junling;see QU Yu et al.;(4),787-800AN Junling;see WANG Feng et al.;(6),1331-1342Ania POLOMSKA-HARLICK;see Jieshun ZHU et al.;(4),743-754Baek-Min KIM;see Seong-Joong KIM et al.;(4),863-878BAI Tao;see LI Gang et al.;(1),66-84BAO Qing;see YANG Jing et al.;(5),1147—1156BEI Naifang; 相似文献
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《Acta Meteorologica Sinica》2014,(6)
正Journal of Meteorological Research is an international academic journal in atmospheric sciences edited and published by Acta Meteorologica Sinica Press,sponsored by the Chinese Meteorological Society.It has been acting as a bridge of academic exchange between Chinese and foreign meteorologists and aiming at introduction of the current advancements in atmospheric sciences in China.The journal columns include Articles.Note and Correspondence,and research letters.Contributions from all over the world are welcome. 相似文献
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自地球形成至寒武纪将近40亿年（距今46亿～5.4亿年,通常称为前寒武纪）的气候演变是一个具有特殊难度和挑战性的研究领域,同时也是基础和前沿的研究领域。文章选择了前寒武纪气候演化中的三个重要科学问题进行综述：大气演化、两次全球性的冰川期以及暗弱太阳问题。关于大气演化,本文首先描述了大气成分的演化历史,然后简述了影响大气成分演化的三个基本过程：大气逃逸、两次大气氧含量突然增加、碳酸盐-硅酸盐循环及其对气候系统的负反馈作用。两次全球性的冰川期分别发生在古元古代（距今24亿～21亿年）和新元古代（距今8亿～5.8亿年）,文章简述了其成因以及相关的气候模拟结果。暗弱太阳问题是地球历史气候演化的一个经典问题,论文简要地综述了一些最新的研究成果和观点。 相似文献
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淮河流域水文极值预测模型研究 总被引：1，自引：0，他引：1
为探索气候变化影响下水文极值的非平稳性和预测方法,建立了水文极值非平稳广义极值（GEV）分布的统计预测模型。利用1952-2010年淮河上游流域累计面雨量和流量年最大值资料、同期500 hPa环流特征量资料以及17个CMIP5模式对环流特征量的模拟结果,筛选出对水文极值影响显著的年平均北半球极涡强度指数作为GEV分布参数的预测因子。分析了在RCP2.6、RCP4.5和RCP8.5情景下2006-2050年淮河上游流域水文极值对气候变化的响应。结果表明,10年以下与10年以上重现期的水文极值在非平稳过程中呈现前者下降而后者上升的相反变化趋势;多模型预测的集合平均在未来情景中均呈现上升趋势,情景排放量越大增幅越大,重现期越长增幅也越大。与极值的常态相比,极值的极端态更易受气候变化影响。 相似文献
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The moving-window correlation analysis was applied to investigate the relationship between autumn Indian Ocean Dipole (IOD) events and the synchronous autumn precipitation in Huaxi region, based on the daily precipitation, sea surface temperature (SST) and atmospheric circulation data from 1960 to 2012. The correlation curves of IOD and the early modulation of Huaxi region’s autumn precipitation indicated a mutational site appeared in the 1970s. During 1960 to 1979, when the IOD was in positive phase in autumn, the circulations changed from a “W” shape to an ”M” shape at 500 hPa in Asia middle-high latitude region. Cold flux got into the Sichuan province with Northwest flow, the positive anomaly of the water vapor flux transported from Western Pacific to Huaxi region strengthened, caused precipitation increase in east Huaxi region. During 1980 to 1999, when the IOD in autumn was positive phase, the atmospheric circulation presented a “W” shape at 500 hPa, the positive anomaly of the water vapor flux transported from Bay of Bengal to Huaxi region strengthened, caused precipitation ascend in west Huaxi region. In summary, the Indian Ocean changed from cold phase to warm phase since the 1970s, caused the instability of the inter-annual relationship between the IOD and the autumn rainfall in Huaxi region. 相似文献
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Atmospheric Infra Red Sounder(AIRS) measurements are a valuable supplement to current observational data, especially over the oceans where conventional data are sparse. In this study, two types of AIRS-retrieved temperature and moisture profiles, the AIRS Science Team product(Sci Sup) and the single field-of-view(SFOV) research product, were evaluated with European Centre for Medium-Range Weather Forecasts(ECMWF) analysis data over the Atlantic Ocean during Hurricane Ike(2008) and Hurricane Irene(2011). The evaluation results showed that both types of AIRS profiles agreed well with the ECMWF analysis, especially between 200 h Pa and 700 h Pa. The average standard deviation of both temperature profiles was approximately 1 K under 200 h Pa, where the mean AIRS temperature profile from the AIRS Sci Sup retrievals was slightly colder than that from the AIRS SFOV retrievals. The mean Sci Sup moisture profile was slightly drier than that from the SFOV in the mid troposphere. A series of data assimilation and forecast experiments was then conducted with the Advanced Research version of the Weather Research and Forecasting(WRF) model and its three-dimensional variational(3DVAR) data assimilation system for hurricanes Ike and Irene. The results showed an improvement in the hurricane track due to the assimilation of AIRS clear-sky temperature profiles in the hurricane environment. In terms of total precipitable water and rainfall forecasts, the hurricane moisture environment was found to be affected by the AIRS sounding assimilation.Meanwhile, improving hurricane intensity forecasts through assimilating AIRS profiles remains a challenge for further study. 相似文献