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您的检索式：作者名="Runxia GUO"
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| 1 | A Case Study on the Rapid Rain-to-Snow Transition in Late Spring 2018 over Northern China:Effects of Return Flows and Topography显示文摘Phase changes in the precipitation processes of early winter and late spring in midlatitude regions represent challenges when forecasting the timing and magnitude of snowfall.On 4 April 2018,a heavy snow process occurred in Beijing and northwestern Hebei Province,becoming the most delayed occurrence of heavy spring snow ever recorded over Beijing in the last 30 years.This paper uses observational and numerical simulation data to investigate the causes for the rapid rain-to-snow(RRTS)phase transition during this process.The following results are obtained.(1)Return flows(RFs),an interesting type of easterly wind,including those at 1000,925,and 800 hPa,played an important role in this heavy snow process and presented a characteristic'sandwich'structure.The RFs,complex topography,and snow particles that dominated the clouds,were the three key factors for the RRTS transition.(2)The RRTS transition in the plains was directly related to the RF at 925 hPa,which brought about advective cooling initiated approximately 4-6 h before the onset of precipitation.Then,the RF played a role of diabatic cooling when snow particles began to fall at the onset of precipitation.(3)The RRTS transition in the northern part of the Taihang Mountains was closely related to the relatively high altitude that led to a lower surface temperature owing to the vertical temperature lapse rate.Both immediately before and after the onset of precipitation,the snow particles in clouds entrained the middle-level cold air downward,causing the melting layer(from surface to the 0℃-isotherm level)to become very thin;and thus the snow particles did not have adequate time to melt before falling to the ground.(4)The rapid RRTS over the Yanqing mountainous area in the northwest of Beijing could have involved all the three concurrent mechanisms:the advective cooling of RF,the melting cooling of cloud snow particles,and the high-altitude effect.Compared with that in the plain area with less urbanization the duration of the RRTS in the plain area with significant urbanization was extended by approximately 2 h. | Wenlong ZHANG Xiaopeng CUI Bolong DUAN Bo YU Runxia GUO Haiwen LIU | 2022 | Journal of Meteorological Research2022，36，1： | 2 |
| 2 | KDM2B能够依赖其招募PRC1.1复合物的功能调控体细胞重编程显示文摘文章简介PRC1(Polycomb Repressive Complex 1)复合物在发育过程中起着非常重要的作用,很多复合物成分的缺失或者异常都能直接导致胚胎发育的异常。最近的研究发现PRC1包含多种变体,但是其对细胞命运调控的具体机制并不十分清楚。 | Zhiwei Zhou Xuejie Yang Jiangping He Jing Liu Fang Wu Shengyong Yu Yuting Liu Runxia Lin He Liu Yuanbin Cui Chunhua Zhou Xiaoshan Wang Jian Wu Shangtao Cao Lin Guo Lihui Lin Tao Wang Xiaozhong Peng Boqing Qiang Andrew P.Hutchins 裴端卿 陈捷凯 | 2018 | 科学新闻2018，0，4： | 0 |
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