Frequency, Intensity Statistics and Cyclical Analysis of Rainstorm in the Flood Season in Guangzhou

[Objective] The research aimed to analyze the variations of rainstorm frequency, intensity and period in the flood season in Guangzhou. [Method] Based on the daily precipitation data in Guangzhou City during 1951-2010, the interannual and interdecadal variation characteristics of rainstorm in the flood season in recent 60 years were analyzed by using the linear regression analysis, correlation analysis, wavelet analysis and so on. Moreover, the relationship between the rainstorm in the flood season and annual average temperature was analyzed. [Result] In recent 60 years, the rainstorm amount and days in the flood season in Guangzhou respectively increased with 6.23 mm/10 a and 0.27 d/10 a linear trends. The most rainstorm days (rainfall) was in 2001 and was 15 d (1 085.7 mm). There was no rainstorm in the least year (1990). The interannual variations of rainstorm amount and days in the flood season in Guangzhou obviously increased in recent 20 years. The decadal and interannual variations of rainstorm in the prior and latter flood seasons had the difference. The trend in the prior flood season increased and in the latter flood season slightly decreased. The positive correlation between the rainstorm days and the annual average temperature in the flood season in Guangzhou was significant, and the relative coefficient was 0.22, which passed α=0.02 significance level test. The total rainstorm days in the prior flood season in Guangzhou City mainly had 4.2-year interannual and 52.9-year interdecadal periodic variations. The total rainstorm days in the latter flood season mainly had 5.5-year interannual and 18.4-year interdecadal periodic variations. [Conclusion] The research provided the scientific basis for the precipitation forecast in the flood season.

面向新质生产力发展的学术期刊传播要素及传播力指标变革研究

目的:探讨新质生产力背景下学术期刊传播要素及传播力指标的变迁情况,有助于其传播效能的提升。方法:利用文献调研法与逻辑分析法归纳学术期刊传播要素及传播力指标的边界拓展与内涵延展情况,表征新质生产力对提高科学传播质量的驱动作用。结果:颠覆性的前沿技术催生学术期刊传播的新模式和新动能,传播者、传播内容、传播渠道、传播受众、传播效果五大传播要素及其对应的传播力指标均得到有力拓展与深化,构成学术期刊传播和发展中的新质生产力。结论:学术期刊应积极以新质生产力发展为导向,以新技术驱动衍生的传播力新指标为标杆,促进信息的深度交流与文化的广泛传播,共同讲好中国科技故事,提升国家软科技传播力。

A Letter to Overseas Readers

Dear readers, It has been 11 years since the first Journal of Tropical Meteorology published in December 1995. During the time, a number of readers across the world have been showing great interest in it by either subscription or exchange. Via this English publication, the Chinese meteorologists make their voices heard worldwide, joining you in efforts to explore the truth behind weather and climate changes.

IEEE期刊出版平台创刊策略分析及启示

【目的】探讨IEEE科技期刊的创建与发展历史和策略,以期为我国新刊的创办和高质量发展提供参考意见。【方法】通过详细分析1963—2020年IEEE的创刊数量及创刊主题词分布等信息,系统探究IEEE期刊集群平台持续创刊的发展策略。【结果】1963—2020年,IEEE创办新刊物的速度一直处于较高水平,平均每年创刊4.0种;而在2013—2020年,这一速度更是持续上升,每年创刊9.4种。IEEE期刊集群平台发展主要策略包括创办聚焦前沿热点的期刊、创办能够满足不同读者和作者需求的多样性期刊、创办增强期刊发展活力和时效性的OA期刊3个方面。在此基础上,IEEE开创性地创办巨型OA期刊,从而完成对期刊出版类型和运营模式的补充和完善。【结论】借鉴IEEE创建新刊、传播知识的成功经验,建议国内办刊者明确发展策略,紧握学科新兴技术前沿,以作者和读者的需求为指导,以坚实的学术共同体为基石,适时创办巨型OA期刊以增强期刊的吸引力和时效性,并保持稳定的持续创刊能力。