Typhoon Hagibis (2019) caused widespread flooding and damage over eastern Japan. The associated rainfall maxima were primarily observed on the windward mountain slopes along with west of leading edge a low-level front. Concomitantly, significant positive value in sea surface temperature anomalies (SSTAs) was association an ocean eddy Oyashio region, together anomalous warmth entire western Nort...

Atmospheric precipitation during cyclonic situations was analyzed using weather types classification. Based on data from the period 1991 to 2015, observed were in terms of their frequency days with a given type. Cyclonic airflow direction west and northwest, north northeast, east southeast, south southwest analyzed. We identified declining number that can be classified as situations. The distri...

Abstract Barchan dunes of the Kharga Depression, Western Desert, Egypt, have been assessed in terms their morphometry, grain size, and migration rate using remote sensing GIS techniques field laboratory work. Thirty-seven sites were chosen along dune belt subdivided into northern, central, southern sectors. At each site, several barchans subjected to morphometric measurements (length, width, he...

Abstract Using the global Moran's I and other statistical methods, spatio-temporal variation characteristics of extreme precipitation over Dongting Lake basin are studied based on daily at national meteorological stations from 1960 to 2016. The results show that spatial distribution is very uneven. areas with maximum located in Lishui River basin, middle reaches Zishui lower Yuanshui River. The...

Natural ventilation can be categorized into single-sided and cross-ventilation. Based on the air flow mechanism of a wind-driven natural ventilation, effective rates in buildings are different from through openings. The mixing coefficient or efficiency is defined by ratio these rates, indicating ventilating ability similar to effect penetration depth fresh air. This paper provides detailed anal...

Abstract The structure of parabolic condensers makes them susceptible to wind load because their thin and large windward mirrors. In this paper, the pressure on a model condenser mirror (1:35) multistorey flat roofs is analysed via measurement in tunnel. mean wind-pressure distribution law flat-roof mirrors (including change with working conditions maximum characteristics) fluctuating extreme a...

High-rise buildings cause accelerated winds around them. However, the interference effects of high-rise on surrounding low-rise in urban blocks have not been evaluated. This study investigated wind pressure coefficients roofs and walls a building through tunnel experiments. Seventy-two directions were considered from 0° to 355° 5° increments, influence direction was At 30° angle, positive negat...