نتایج جستجو برای: precipitation intensity

تعداد نتایج: 237579  

2017
Qingfeng Li Guojing Yang Xiangzheng Deng

Alpine precipitation is an important component of the mountain hydrological cycle and may also be a determinant of water resources in inland river basins. In this study, based on field observation data of the upper Shule River and daily precipitation records of the Tuole weather station during 2009–2015, temporal distribution characteristics of alpine precipitation and their vertical differenti...

2011
FENG Lei Tim LI Jing-Jia LUO

Projections of future precipitation change over China are studied based on the output of a global AGCM, ECHAM5, with a high resolution of T319 (equivalent to 40 km). Evaluation of the model’s performance in simulating present-day precipitation shows encouraging results. The spatial distributions of both mean and extreme precipitation, especially the locations of main precipitation centers, are ...

2013
G. R. Demarée H. Van de Vyver

Detailed probabilistic information on the intensity of precipitation in Central Africa is highly needed in order to cope with the risk analysis of natural hazards. In the mountainous areas of Rwanda land slides frequently occur and might cause a heavy toll in human lives. The establishment of Intensity-Duration-Frequency curves for precipitation in Central Africa remains a difficult task as ade...

2013
QING CAO YANG HONG JONATHAN J. GOURLEY YOUCUN QI JIAN ZHANG YIXIN WEN

This study presents a statistical analysis of the vertical structure of precipitationmeasured by NASA–Japan Aerospace ExplorationAgency’s (JAXA) Tropical RainfallMeasuringMission (TRMM) precipitation radar (PR) in the region of southern California, Arizona, and western NewMexico, where the ground-based NextGeneration Radar (NEXRAD) network finds difficulties in accurately measuring surface prec...

Journal: :پژوهش های جغرافیای طبیعی 0
حمید زارع ابیانه وحید یزدانی خلیل اژدری

quantitative measurement of meteorological drought, z score(z), rainfall anomaly (rai), standard precipitation (spi) indices and percent of normal precipitation (pnpi) based upon seasonal and annual rainfall data of the 15 meteorological stations of meteorological in hamedan province were used. also, in studying influences of drought on agriculture relative yield index of wheat was used. the re...

1998
Gerard Kiely John D Albertson Richard W Katz

The relationship between precipitation and large-scale measures of atmospheric circulation has received much attention in recent years (e.g. Bardossy & Caspary, 1990; Bardossy & Plate, 1992; Hughes et al., 1993; Woolhiser et al., 1993; Katz & Parlange, 1993). Some of the interest relates to quantifying the possible change in atmospheric circulation within the past two decades, with associated c...

Razi Khalaf, Saeed Soltani Koupai

The intensity –duration –frequency (IDF) curves play most important role in watershed management, flood control and hydraulic design of structures. Conventional method for calculating the IDF curves needs hourly rainfall data in different durations which is not extensively available in many regions. Instead 24-hour precipitation statistics were measured in most rain-gauge stations. In this stud...

2018
L. C. Hirons S. J. Woolnough

The impacts of air-sea interactions on the representation of tropical precipitation extremes are investigated using an atmosphere-ocean-mixed-layer coupled model. The coupled model is compared to two atmosphere-only simulations driven by the coupled-model sea-surface temperatures (SSTs): one with 31 day running means (31 d), the other with a repeating mean annual cycle. This allows separation o...

2007
Weijian Zhou Alfred Priller Warren Beck Walter Kutschera Xian Feng Liu Lin

The cosmogenic radionuclide 10Be is produced by cosmic-ray spallation in Earth’s atmosphere. Its production rate is regulated by the geomagnetic field intensity, so that its accumulation rate in aeolian sediments can, in principle, be used to derive high-resolution records of geomagnetic field changes. However, 10Be atmospheric fallout rate also varies locally depending on rainfall rate. The ac...

2015
C. R. Terai R. Wood T. L. Kubar

Quantifying the sensitivity of warm rain to aerosols is important for constraining climate model estimates of aerosol indirect effects. In this study, the precipitation sensitivity to cloud droplet number concentration (Nd) in satellite retrievals is quantified by applying the precipitation susceptibility metric to a combined CloudSat/Moderate Resolution Imaging Spectroradiometer data set of st...

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