Results 11 to 20 of about 42,630 (147)

香港暴雨中心迁移与滑坡位置关系分析

open access: yesShuitu Baochi Xuebao, 2003
香港地区每年均有一定数量的滑坡灾害发生,诱发滑坡灾害的主要因子是强降水,即暴雨.暴雨过程中,降水强度的时空分布存在一定差异性,这种降水强度的时空与滑坡灾害的时空分布存在一定的联系.以香港地区1992年5月8日暴雨为例,以30 min为时间间隔,分析了暴雨中心时空变动与滑坡事件时空分布及出现频率之间的关系,发现空间上滑坡均出现在暴雨中心或暴雨中心的边沿地区;时间上滑坡事件出现在暴雨中心出现或上一阶段时间内;并且降水的强度与滑坡的出现频率也有一定关系.
李军, 周成虎
doaj   +3 more sources

Comparison of the upper northeasterly flow with and without heavy rain(高空偏北大风与有无暴雨的对比分析)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2002
利用常规观测资料对1991~1996年江淮地区梅雨期的高、低层流场进行合成诊断分析.比较了高空偏北大风下有无暴雨在天气形势、物理量特征、三维流场方面的差异.文中一些分析结果可供暴雨预报参考.
DINGHua-jun(丁华君)   +1 more
doaj   +2 more sources

Causation analysis of the heavy rain in Zhejiang Province caused by typhoon "Matmo"(台风“麦德姆”引发浙江暴雨的成因分析)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2015
利用NCEP再分析资料、MICAPS资料、常规自动站资料对台风“麦德姆”过程进行综合分析,主要对其在浙江中南部和西部造成的暴雨成因作诊断分析.结果表明:(1)副高外围气流为麦德姆移动路径起着关键的引导作用;(2)暴雨区上空较强的水汽通量、高温高湿的湿能量积聚、不稳定的大气层结以及持续长时间的上升运动都为暴雨发生提供了有利条件;(3)根据湿位涡分析,本次过程是一次对流不稳定和斜压不稳定均存在、以对流不稳定为主的台风暴雨过程.暴雨区发生在MPV1负值中心附近,尤其700 hPa的MPV1值指示效果最好 ...
GUOQiaohui(郭巧慧), SHENJiao(沈娇)
doaj   +2 more sources

The comparative analysis of two “7.17” torrential rainfalls in Huzhou Area(湖州地区2次“7. 17”特大暴雨过程的对比分析)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2014
利用湖州市中尺度自动站资料、风廓线资料以及NCEP再分析资料对2011年7月17日和2012年7月17 日湖州地区发生的2次特大暴雨过程的降水特征、环流形势、水汽条件和动力抬升机制进行了对比分析,发现2次“7. 17”特大暴雨的发生具有偶然性也有必然性.(1)副高位置偏高,其西南侧热带气旋活跃,提供强盛偏东气流,与槽前的西南气流汇合,在副高边缘形成有利于强降水发生的天气背景.(2)偏东气流的加强对于特大暴雨的触发有至关重要的作用,可以作为判断夏季特大暴雨爆发时段的一个关键信号.(3 ...
XIANGHua(向华)   +5 more
doaj   +2 more sources

A composite study of the effects of the upper northeasterly flow located on the east side of the Qinghai-Xizang High on heavy rainfall during Meiyu period(青藏高压东侧偏北大风对梅雨暴雨影响的合成分析)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2001
利用常规观测资料对1991〜1996年江淮地区梅雨大暴雨期的高、低层流场进行合成诊断分析.结果表明,梅雨期暴雨时,在对流层上部,由于青藏高压向东扩,在高压东侧出现偏北大风轴,由此构成的高空辐散区随着高压的东移而东移,它常常位于低空急流前端的上空,形成上层东北风,下层西南风的特殊耦合关系.
ZHAIGuo-qing(翟国庆), GAOKun(高坤)
doaj   +2 more sources

Influence of Synoptic‐Scale Waves on the Interdecadal Change in Tropical Cyclone Activity Over the Western North Pacific in the Early 2010s

open access: yesGeophysical Research Letters, Volume 50, Issue 5, 16 March 2023., 2023
Abstract In this study, we investigated the interdecadal change in tropical cyclone (TC) activity over the western North Pacific (WNP) in the early 2010s. At the western boundary of the WNP, the interdecadal change in TC activity exhibited a meridional tripole pattern.
Jingliang Huangfu   +5 more
wiley   +1 more source

Study on the Impact of Future Climate Change on Extreme Meteorological and Hydrological Elements in the Upper Reaches of the Minjiang River

open access: yesAdvances in Meteorology, Volume 2023, Issue 1, 2023., 2023
Global warming increases global average precipitation and evaporation, causing extreme climate and hydrological events to occur frequently. Future changes in temperature, precipitation, and runoff from 2021 to 2050 in the upper reaches of the Minjiang River were analyzed using a distributed hydrological model, the SWAT (Soil and Water Assessment Tool),
Ting Chen   +5 more
wiley   +1 more source

Five‐Year Analysis of Lightning Activities in Different Climatic Regions of Sichuan Province, China

open access: yesAdvances in Meteorology, Volume 2023, Issue 1, 2023., 2023
Sichuan is a high‐incidence area of thunderstorm activity in China. Based on the data of the total lightning location system from 2018 to 2022, the total lightning, cloud‐to‐ground (CG) lightning, and intracloud (IC) lightning activity regularity for the Sichuan province (SC) and its three climate subregions: Sichuan Basin (SB), Panxi district (PD ...
Liang Zhang   +5 more
wiley   +1 more source

Disturbance Dynamics and Its Effects on Carbon in Human-Impacted Mountain Forests in Northwestern Yunnan, China. [PDF]

open access: yesEcol Evol
Identifying and quantifying natural and anthropogenic disturbances at fine spatial scales is critical to assess the role of forests in climate change mitigation. Using tree rings, fire scars, satellite imagery, official records, and interviews, we reconstructed historical disturbances and identified fires, logging events, landslides, and icy ...
Cheng Z, Aakala T, Ji C, Larjavaara M.
europepmc   +2 more sources

Predicting the distributions of Scleroderma guani (Hymenoptera: Bethylidae) under climate change in China

open access: yesEcology and Evolution, Volume 12, Issue 10, October 2022., 2022
MaxEnt and ArcGIS can successfully model Scleroderma guani distribution. S. guani is mainly distributed in the south and the north of China. High suitable habitat of S. guani will be increased under climate change. The distribution of S. guani is mainly affected by Precipitation of Warmest Quarter and Mean Temperature of Coldest Quarter.
Xinqi Deng   +4 more
wiley   +1 more source

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