نتایج جستجو برای: precipitation data

تعداد نتایج: 2454931  

ژورنال: علوم آب و خاک 2018

Precipitation is one of the most important components of water balance in any region and the development of efficient models for estimating its spatiotemporal distribution is of considerable importance. The goal of the present research was to investigate the efficiency of the first order multiple-site auto regressive model in the estimation of spatiotemporal precipitation in Kurdistan, Iran. Fo...

2011
KEISUKE ONO SO KAZAMA

The objective of this study is to estimate the daily extreme precipitation distribution in an Asian monsoon region considering orographic precipitation in mountainous areas. For this purpose, the APHRODITE data set and precipitation observations from 150 raingauges throughout Thailand were used as the main input. First, a bias-correction for underestimated precipitation in the APHRODITE data se...

Journal: :پژوهش های جغرافیای طبیعی 0
سید حسین میر موسوی استادیار دانشگاه زنجان

in this paper, the temperature and annual precipitation data has been applied in 44 years for the synoptical stations northwest zone of iran. among the stations, eight of them, which have the perfect data and coverage, has been considered to analysis applied. in this study transfer function models have been used to analysis time series. in this method, firstly, the stations have been modeled th...

Journal: :Remote Sensing 2018
Yueyuan Zhang Yungang Li Xuan Ji Xian Luo Xue Li

Accurate precipitation data at a high spatial resolution are essential for hydrological, meteorological, and ecological research at regional scales. This study presented a geostatistical downscaling-calibration procedure to derive the high spatial resolution maps of precipitation over a mountainous watershed affected by a monsoon climate. Based on the relationships between precipitation and oth...

Journal: :Remote Sensing 2017
No-Wook Park Phaedon C. Kyriakidis Sungwook Hong

This paper investigates the benefits of integrating coarse resolution satellite-derived precipitation estimates with quasi-point rain gauge data for generating a fine spatial resolution precipitation map product. To integrate the two precipitation data sources, a geostatistical downscaling and integration approach is presented that can account for the differences in spatial resolution between d...

Journal: :آب و خاک 0
محمد جعفر ناظم السادات کوکب شاهقلیان

the aim of this study is to assess some synoptic characteristics of heavy precipitations in southwestern parts of iran and evaluate the relationship between them with the madden-julian oscillation (mjo). research is conducted with regard to distribution of precipitation per month and identifying their steam sources. daily records of the november-april precipitation data in abadan, ahwaz, bandar...

2008
LESLIE A. ENSOR SCOTT M. ROBESON

Gridding of daily precipitation data alleviates many of the limitations of data that are derived from point observations, such as problems associated with missing data and the lack of spatial coverage. As a result, gridded precipitation data can be valuable for applied climatological research and monitoring, but they too have limitations. To understand the limitations of gridded data more fully...

Journal: :پژوهش های جغرافیایی (منتشر نمی‏شود) 0
برومند صلاحی استادیار دانشگاه محقق اردبیلی خلیل ولیزادة کامران عضو هیئت علمی گروه جغرافیای طبیعی دانشگاه تبریز یوسف قویدل رحیمی دانشجوی دکتری اقلیم شناسی دانشگاه اصفهان

abstract in this study we have used the monthly data resulted from the calculation of temperature and precipitation for a 52-year period (1951-2003). the doubling effect of carbon dioxide ( ) on temperature and precipitation was modeled as the most important climatic parameters. the resulting hythergraph and ambrothermic models for tabriz indicate monthly increases of temperature and precipitat...

2014
Shanhu Jiang Liliang Ren Yang Hong Xiaoli Yang Mingwei Ma Yu Zhang Fei Yuan

The real-time availability of several satellite-based precipitation products has recently provided hydrologists with an unprecedented opportunity to improve current hydrologic prediction capability for vast river basins, particularly for ungauged regions. However, the accuracy of real-time satellite precipitation data remains uncertain. This study aims to use three widely used real-time satelli...

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