大同市近50年谷子产量与气象条件关系分析

采用相关分析、回归分析等统计学方法,对大同市1961—2010年谷子单产与气温、降水和日照等气象因子的关系进行了分析。结果表明：大同市谷子的气象波动指数为0．3292,占谷子产量波动的94．4％;谷子生育期内温、光、水的变化趋势与谷子生长发育的需求基本吻合。造成谷子产量波动的主要原因是降水量和日照时数在时间分配上的不合理,同时谷子全生育期的总积温和关键生育期平均气温也通过影响谷子所需要的水分严重地影响谷子产量。     

甘肃省糜子生态气候研究及适生种植区划

通过对甘肃省各地糜子生物特征与关键生长期生态气候适应性的探讨,运用统计学方法分析了气象因子对糜子产量的影响,确定生态气候适生种植区划综合指标体系,作出种植适生生态气候区划,并提出提高生态气候资源利用途径。     

分析2001年干旱对岚县谷子产量的影响

谷子是岚县的主要粮食作物之一，属耐旱晚熟品种，平均生育期１４１d，播种面积每年均在４０００hm２以上，占粮食作物种植面积的１２％。由于岚县自然条件差，十年九旱，因此谷子平均产量仅为１３０kg至１８０kg左右。２００１年岚县谷子在整个生育期主要气候特点是干旱。从播种到成熟的总积温为２８２４．８℃，日照１１１３．５h，总降水量为２２７．０mm，与谷子在生育期所需的气候条件相比，气温偏高，光照充足，降水偏少，且分布不均，因此２００１年岚县的谷子平均产量低，是正常年的３成左右。１苗期出苗到拔节期是谷子的苗期。在拔…     

大豆生长发育、产量形成与气候生态因子关系

根据观测得到的大豆各发育期的间隔日数、单株粒重和产量与气候资料,运用统计学原理和相关分析计算得出大豆生长发育速度（两发育期之间的间隔日数）的气候生态模型,以及产量因素、产量等的气候生态模型     

浙江省板栗气候生态区划探讨

探讨了浙江省板栗产量的分布及气候生态区划间题。根据板栗的生物学特性、地区冬季热量条件和7～8月份水分条件的类似性及各县板栗产量的分布现状,将我省划分为3个板栗气候生态栽培区。     

气候条件对广西地区龙眼产量的影响及其丰歉气候指标研究

根据龙眼生物学特性、产量和气候资料,通过平行分析和数理统计方法,对气候条件影响广西地区龙眼产量的关键时期和关键因子进行了研究。结果表明:气候条件影响广西地区龙眼产量的关键时期为晚秋梢生长期、花芽分化期和开花座果期,关键气候因子分别为气温、雨量、雨日和日照时数。在此基础上,结合典型年份气候要素与产量的对比分析,确定了丰歉气候指标,为龙眼的栽培管理提供了科学依据,同时也为开展龙眼气象服务提供了技术支撑。     

大同地区谷子气候生态适应性分析

根据谷子生长发育的特性和优质高产所需的气象条件,分析了大同地区谷子全生育期对气象条件的要求,重点分析了谷子主要生育期降水量波动对谷子产量的影响,概述了谷子生育期不利的气象因素,提出了大同地区谷子优质、高产、稳产的农业气象适用技术。     

优质小麦生产的适宜气象条件及新乡气候适应指数

在分析新乡市气候资源和气候生产力的基础上,结合优质专用小麦的生态习性,剖析了影响小麦品质的气候要素与优质小麦同期的生态气候特点的吻合与适应程度,确定出不同关键时段的气候适应指数.     

盛夏低温冷害对宜昌县中稻产量的影响与对策

分析８０年代以来宜昌县中稻产量及其关键生长期气候状况发现：盛夏持续低温阴雨是造成宜昌县中稻产量歉收的主要气候原因之一。     

三种油菜产量预测模型在江西的应用比较

以江西省1990—2015年气象要素(光照、温度和降水)和逐年全省油菜产量数据为基础,比较分析了关键气象因子模型、气候适宜度模型和辐热积模型预测江西省油菜产量的准确率。结果表明:回代检验中,辐热积模型拟合效果最佳,气候适宜度模型未通过0.05水平显著性检验,关键气象因子模型花期拟合结果相对较差;预测检验中,3种模型的预测准确率均超过90%,关键气象因子模型、气候适宜度模型和辐热积模型全年预测准确率高于95%的概率分别为80%、60%和80%。综合预测准确率和模型稳定性两方面分析,辐热积模型相对于气候适宜度模型和关键气象因子模型更加适用于江西省油菜产量预测业务服务。     

COMPARATIVE ANALYSIS OF VARIOUS DATA OF AIR–SEA TEMPERATURE DIFFERENCE AND ITS VARIATION ACROSS SOUTH CHINA SEA IN THE PAST 35 YEARS

Using the International Comprehensive Ocean-Atmosphere Data Set(ICOADS) and ERA-Interim data, spatial distributions of air-sea temperature difference(ASTD) in the South China Sea(SCS) for the past 35 years are compared,and variations of spatial and temporal distributions of ASTD in this region are addressed using empirical orthogonal function decomposition and wavelet analysis methods. The results indicate that both ICOADS and ERA-Interim data can reflect actual distribution characteristics of ASTD in the SCS, but values of ASTD from the ERA-Interim data are smaller than those of the ICOADS data in the same region. In addition, the ASTD characteristics from the ERA-Interim data are not obvious inshore. A seesaw-type, north-south distribution of ASTD is dominant in the SCS; i.e., a positive peak in the south is associated with a negative peak in the north in November, and a negative peak in the south is accompanied by a positive peak in the north during April and May. Interannual ASTD variations in summer or autumn are decreasing. There is a seesaw-type distribution of ASTD between Beibu Bay and most of the SCS in summer, and the center of large values is in the Nansha Islands area in autumn. The ASTD in the SCS has a strong quasi-3a oscillation period in all seasons, and a quasi-11 a period in winter and spring. The ASTD is positively correlated with the Nio3.4 index in summer and autumn but negatively correlated in spring and winter.     

Could the Recent Taal Volcano Eruption Trigger an El Ni?o and Lead to Eurasian Warming?

<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.     

VARIABILITY OF INTER-ANNUAL RELATIONSHIP BETWEEN INDIAN OCEAN DIPOLE AND HUAXI REGION’S AUTUMN PRECIPITATION

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.     

IMPACT OF ATMOSPHERIC LOW-FREQUENCY OSCILLATION ON THE IMMIGRATION OF NILAPARVATA LUGENS(STL) IN HUNAN AND JIANGXI PROVINCES

Various features of the atmospheric environment affect the number of migratory insects, besides their initial population. However, little is known about the impact of atmospheric low-frequency oscillation(10 to 90 days) on insect migration. A case study was conducted to ascertain the influence of low-frequency atmospheric oscillation on the immigration of brown planthopper, Nilaparvata lugens(Stl), in Hunan and Jiangxi provinces. The results showed the following:(1) The number of immigrating N. lugens from April to June of 2007 through 2016 mainly exhibited a periodic oscillation of 10 to 20 days.(2) The 10-20 d low-frequency number of immigrating N. lugens was significantly correlated with a low-frequency wind field and a geopotential height field at 850 h Pa.(3) During the peak phase of immigration, southwest or south winds served as a driving force and carried N. lugens populations northward, and when in the back of the trough and the front of the ridge, the downward airflow created a favorable condition for N. lugens to land in the study area. In conclusion, the northward migration of N. lugens was influenced by a low-frequency atmospheric circulation based on the analysis of dynamics. This study was the first research connecting atmospheric low-frequency oscillation to insect migration.     

A COMPARATIVE ANALYSIS OF ATMOSPHERIC AND OCEANIC CONDITIONS BEFORE THE OCCURRENCE OF TWO TYPES OF EL NIO EVENTS

The atmospheric and oceanic conditions before the onset of EP El Ni?o and CP El Ni?o in nearly 30 years are compared and analyzed by using 850 hPa wind, 20℃ isotherm depth, sea surface temperature and the Wheeler and Hendon index. The results are as follows: In the western equatorial Pacific, the occurrence of the anomalously strong westerly winds of the EP El Ni?o is earlier than that of the CP El Ni?o. Its intensity is far stronger than that of the CP El Ni?o. Two months before the El Ni?o, the anomaly westerly winds of the EP El Ni?o have extended to the eastern Pacific region, while the westerly wind anomaly of the CP El Ni?o can only extend to the west of the dateline three months before the El Ni?o and later stay there. Unlike the EP El Ni?o, the CP El Ni?o is always associated with easterly wind anomaly in the eastern equatorial Pacific before its onset. The thermocline depth anomaly of the EP El Ni?o can significantly move eastward and deepen. In addition, we also find that the evolution of thermocline is ahead of the development of the sea surface temperature for the EP El Ni?o. The strong MJO activity of the EP El Ni?o in the western and central Pacific is earlier than that of the CP El Ni?o. Measured by the standard deviation of the zonal wind square, the intensity of MJO activity of the EP El Ni?o is significantly greater than that of the CP El Ni?o before the onset of El Ni?o.     

全球贸易隐含碳变化及其影响分析

基于最新的GTAP8 (Global Trade Analysis Project）数据库,使用投入产出法,分析了2004年到2007年全球贸易变化下南北集团贸易隐含碳变化及对全球碳排放的影响。结果显示,随着发展中国家进出口规模扩张,全球贸易隐含碳流向的重心逐渐向发展中国家转移。2004年到2007年,发达国家高端设备制造业和服务业出口以及发展中国家资源、能源密集型行业及中低端制造业出口的趋势加强,该过程的生产转移导致全球碳排放增长4.15亿t,占研究时段全球贸易隐含碳增量的63%。未来发展中国家的出口隐含碳比重还将进一步提高。贸易变化带来的南北集团隐含碳流动变化对全球应对气候变化行动的影响日益突出,发达国家对此负有重要责任。     

Analysis of Atmospheric Boundary Layer Height Characteristics over the Arctic Ocean Using the Aircraft and GPS Soundings

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     

Index to Vol.31

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;     

Information for Contributors

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.